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1

Study of the Mechanical and Antibacterial Properties of Surface Modified Steel for Medical Applications

Taratuta Anna, Lisoń-Kubica Julia, Kazek-Kęsik Alicja, Antonowicz Magdalena, Basiaga Marcin

Tribologia

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2023

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nr 2

85--95

EN

Various types of metal implants, both in Poland and worldwide, are mainly manufactured from stainless steel due to their biocompatibility, strength, and relatively low price. However, any such procedure involves the risk of peri-implant infection, stimulated, among other things, by the formation of a bacterial biofilm on the surface of the implant. In this paper, several methods of modifying the surface of steel for medical applications were proposed, such as mechanical polishing, electropolishing, sandblasting, and the application of a thin surface layer. This was followed by a series of physicochemical and biological tests. The results indicate that the titanium nitride coating improved corrosion resistance and reduced bacterial adhesion on the surface. No significant improvement in abrasion was observed, and the adhesion of the coating closely depended on the method of preparation.

PL

Implanty metalowe, zarówno w Polsce, jak i na świecie, produkowane są głównie ze stali nierdzewnej ze względu na jej biokompatybilność, wytrzymałość i stosunkowo niską cenę. Jednak każdy tego rodzaju zabieg wiąże się z ryzykiem powstania zakażenia okołowszczepowego, stymulowanego m.in. powstawaniem biofilmu bakteryjnego na powierzchni implantu. W pracy zaproponowano kilka metod modyfikacji powierzchni stali do zastosowań medycznych, takich jak polerowanie mechaniczne, elektropolerowanie, piaskowanie oraz nałożenie cienkiej warstwy powierzchniowej. Następnie przeprowadzono szereg badań fizykochemicznych i biologicznych. Wyniki wskazują, że powłoka azotku tytanu poprawiła odporność na korozję oraz ograniczyła adhezję bakterii na powierzchni. Nie zaobserwowano znaczącej poprawy ścieralności, a adhezja powłoki ściśle zależała od metody jej przygotowania.

2

The influence of amino chain length and calcium lignosulfonate modification on lignosulfonamides flammability and thermal stability

Majka Tomasz M.

Polimery

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2023

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Vol. 68, nr 10

544--554

EN

The i nfluence of methods for obtaining lignosulfonyl chloride (through chemical modifications of calcium lignosulfonate) and the amine chain length on the thermal properties and flammability of lignosulfonamides were examined. HCl/HSO3Cl, HCl/PCl5, PCl5, and SOCl2 were used to calcium lignosulfonate modification. The conditions for the synthesis of lignosulfonamides were optimized. Promising results were aquired for N-butyl-N-dodecyl-lignosulfonamides obtained by reaction with thionyl chloride and PCl5. Tests confirmed negligible flammability and better thermal stability. The obtained lignosulfonamides can be used as flame-retardants in biocomposites.

PL

Zbadano wpływ metod otrzymywania chlorku lignosulfonylu (poprzez modyfikację chemiczną lignosulfonianu wapnia) oraz długości łańcucha aminowego na właściwości termiczne i palność lignosulfonamidów. Do modyfikacji lignosulfonianu wapnia zastosowano HCl/HSO3Cl, HCl/ PCl5, PCl5 i SOCl2. Zoptymalizowano warunki syntezy lignosulfonamidów. Obiecujące wyniki uzyskano dla N-butylo-N-dodecylo-lignosulfonamidów otrzymanych w reakcji z chlorkiem tionylu i PCl5. Badania potwierdziły znikomą palność i lepszą stabilność termiczną. Otrzymane lignosulfonamidy można stosować jako środki zmniejszające palność biokompozytów.

3

Study of selected properties of PLA used in 3D printing

Sośniak K., Biela D., Szalaty D., Ścieszka M., Polok-Rubiniec M., Włodarczyk-Fligier A., Kania A.

Journal of Achievements in Materials and Manufacturing Engineering

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2023

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Vol. 116, nr 2

72--79

EN

Purpose: This study focuses on determining the best possible structure of the orthosis made with FDM 3D printing technology. To produce the samples, a thermoplastic PLA material was selected that met the conditions of biodegradability, biocompatibility and non-toxicity. The samples produced were subjected to a tensile strength test and corrosion resistance. Design/methodology/approach: Studies based on FEM analysis were carried out using the advanced engineering software CAE - Inventor. The samples were designed in the CAD system, while the G-Code path was generated using the PrusaSlicer 2.5.0 program dedicated to the Prusa i3 MK3S+ printer, which was used to create the models. Surface morphology observations of PLA were carried out with a Zeiss SUPRA 35 scanning electron microscope (SEM). The static tensile test was performed on the Zwick/Roell z100 device based on the PN-EN ISO 527:1 standard. Electrochemical corrosion tests were carried out using the Autolab PGSTAT302N Multi BA potentiostat in Ringer solution at a temperature of 37ºC. Findings: The research allowed the appropriate structure of the orthosis made of PLA polymer material using 3D FDM printing technology. The static tensile test, SEM and corrosion tests confirmed the correct application of this material for the selected purpose. It was possible to determine that samples with holes of 10 mm had the highest strength properties. Due to the tensile tests, the average tensile strength of those samples was around 61 MPa. The corrosion parameters of PLA were determined using Tafel analysis. Research limitations/implications: The research methodology proposed in work can be used to study other biomedical materials. The results presented can be the basis for further tests in order to search for the best orthopaedic stabiliser. Originality/value: The innovative part of the article are three different versions of structures intended for making orthoses used in medicine.

4

Skóra rybia jako źródło kolagenu. Charakterystyka, metody ekstrakcji i zastosowanie

Sadlik Julia, Słota Dagmara

Inżynieria Materiałowa

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2023

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Vol. 44, nr 1

20--25

PL

Kolagen jest kluczowym białkiem w organizmach żywych, stanowiącym aż ok. 30% białka ludzkiego. Ze względu na swoje właściwości znajduje zastosowanie w wielu dziedzinach, od inżynierii tkankowej po farmację i przemysł kosmetyczny. Z uwagi na zapotrzebowanie rynku szczególne zainteresowanie wzbudził kolagen pochodzenia rybiego, bowiem stosowanie go jest dozwolone we wszystkich religiach i nie ma związanych z tym żadnych restrykcji, jak w przypadku wiary muzułmańskiej czy żydowskiej, gdzie zakazane jest korzystanie z kolagenu wieprzowego bądź wołowego. Kolejnym aspektem przemawiającym za stosowaniem tego typu białka jest jego bezpieczeństwo, ponieważ w przeciwieństwie do pozostałych źródeł kolagenu zmniejsza on ryzyko przenoszenia różnego rodzaju chorób odzwierzęcych. Kolagen morski można pobierać z odpadów rybnych, takich jak skóra, łuski i płetwy. W artykule przedstawiono sposoby ekstrakcji oraz możliwości zastosowania takiego białka.

EN

Collagen is a key protein in living organisms, it constitutes as much as 30% of human protein. Due to its interesting properties, it is used in many fields, from tissue engineering to pharmacy and the cosmetics industry. Because of the market demand, collagen of fish origin aroused interest, its use is allowed in all religions and there are no restrictions related to it as in the case of the Muslim or Jewish faith, where the use of pork or beef collagen is prohibited. Another aspect in favor of using this type of protein is its safety, because unlike other collagen sources, it reduces the risk of transmitting various zoonotic diseases. Marine collagen can be extracted from fish waste, such as skin, scales and fins. This article presents the methods of extraction and the possibilities of using such a protein.

5

The properties of fish skin collagen films after cross-linking with tannic acid

Sionkowska Alina, Lewandowska Katarzyna, Szulc Marta, Brudzyńska Patrycja, Kulka Karolina, Piwowarski Łukasz

Engineering of Biomaterials

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2023

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vol. 26, no. 168

9--14

EN

Over the last three decades, an increasing interest in the preparation of new materials for wound healing has been observed. Collagen is a widely used biomaterial, and especially fish skin collagen is more and more popular among scientists. This study aimed to obtain thin films from native fish skin collagen and collagen cross-linked with tannic acid. Infrared spectroscopy, mechanical test, topographic imaging, and swelling test were used to characterize the features of the mentioned films. Statistical evaluation of the results was conducted with the Q-Dixon test. Infrared spectroscopy analysis showed that in the IR spectra of examined biomaterials, there are slight shifts in band positions after tannic acid cross-linking. The mechanical properties of the cross-linked material were different from those of the native collagen film. The Young’s modulus was higher for cross-linked collagen, whereas the elongation at break was lower than for pure collagen. The swelling of the collagen films increased after cross-linking with tannic acid. Swelling tests indicated that collagen cross-linked with tannic acid absorbs more water than before cross-linking. The properties of collagen films were significantly improved after tannic acid cross-linking. All alterations can be a result of collagen cross-linking by tannic acid, probably by forming hydrogen bonds between collagen and tannic acid.

6

The influence of selected transition elements on cell metabolism

Terpiłowska Sylwia, Rafińska Katarzyna, Gołębiowski Adrian, Kowalkowski Tomasz, Buszewski Bogusław

Ecological Chemistry and Engineering. S

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2023

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Vol. 30, nr 4

471--488

EN

The elements are present in the environment. Moreover, they are used in pharmacy and the production of new materials used in medical applications. They are often as environmental pollutants. They can accumulate in organisms and induce toxic effects on the cellular level. HepG2, L929 and Caco-2 cell lines were exposed to known concentrations of chromium chloride, iron chloride, nickel chloride, molybdenum trioxide and cobalt chloride (200 or 1000 μ M used alone and in combinations). Concentrations of chromium, iron, nickel, molybdenum and cobalt in the cell lysate and the culture medium were determined by ICP-MS. Moreover, sodium, potassium, calcium and magnesium concentrations were also measured. What is more, cells were observed under light and scanning electron microscope. The dose-dependent increase in the concentration of chromium, iron, nickel, molybdenum and cobalt in all cell lines after incubation with elements was observed. Potassium concentration decreases while sodium calcium and magnesium increase after incubation of cells with of mentioned elements. The incubation of cells with microelements induces cell morphology changes. The presented study shows the crucial role of tested microelements in the induction of cell death as a result of an imbalance of sodium, potassium, calcium and magnesium concentration inside the cell.

7

Synthesis of Ti-Nb-Zr Alloys Combined Powder Metallurgy and Arc Melting Methods

Matuła Izabela, Dercz Grzegorz, Prusik Krystian, Szklarska Magdalena, Kazek-Kęsik Alicja, Simka Wojciech, Sudoł E.

Archives of Metallurgy and Materials

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2023

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Vol. 68, iss. 3

1115--1120

EN

Scientists and medics are still searching for new metallic materials that can be used in medicine, e.g., as material for implants. The following article proposes materials based on titanium with vital elements prepared by combined powder metallurgy and arc melting methods. Four compositions of Ti-28Ta-9Nb, Ti-28Ta-19Nb, Ti-28Ta-9Zr and Ti-28Ta-19Zr (wt.%) have been prepared. The tested material was thoroughly analyzed by X-ray diffraction and scanning electron microscopy. Qualitative phase analysis using X-ray diffraction showed the presence of two phases, α' and β titanium. In addition, a microhardness test was conducted, and the material was characterized in terms of corrosion properties. It was found that the corrosion resistance decreases with an increase of the β phase presence.

8

Effect of Nb and Zr alloying additives on structure and properties of Ti-Ta-Nb-Zr alloys for medical applications

Dercz Grzegorz, Matuła Izabela, Prusik Krystian, Zając J., Szklarska Magdalena, Kazek-Kęsik Alicja, Simka Wojciech

Archives of Metallurgy and Materials

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2023

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Vol. 68, iss. 3

1137--1142

EN

This work investigated two titanium-based alloys with a constant tantalum content and variable contents of alloy additives - niobium and zirconium. The Ti-30Ta-10Zr-20Nb (wt.%) and Ti-30Ta-20Zr-10Nb (wt.%) alloys were obtained using a combination of powder metallurgy and arc melting methods. The influence of alloying additives on the structure and properties of the Ti-Ta-Nb-Zr system was studied using, among others: X-ray diffraction and scanning electron microscopy. The X-ray diffraction confirmed the single-β-phase structure of both alloys. In addition, the microscopic analysis revealed that a higher amount of zirconium favoured the formation of larger grains. However, the microhardness analysis indicated that the alloy with the higher niobium content had the higher microhardness. Importantly, the in vitro corrosion study revealed that the addition of niobium promoted the better corrosion resistance of the investigated alloy.

9

Additive manufacturing of metallic biomaterials: a concise review

Mahajan Amit, Singh Gurcharan, Devgan Sandeep

Archives of Civil and Mechanical Engineering

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2023

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Vol. 23, no. 3

art. no. e187, 2023

EN

Additive manufacturing (AM) is one of the critical techniques of novel medical devices which is capable of processing complicated or customized structures to best match the human’s bones and tissues. AM allows for the fabrication of devices with optimal architectures, complicated morphologies, surface integrity, and regulated porosity and chemical composition. Various AM methods can now consistently fabricate dense products for a range of metallic, nonmetallic, composites, and nanocomposites. Different studies are available that describe the microstructure and various properties of 3D-printed biomedical alloys. However, there are limited research on the wear characteristics, corrosion resistance, and biocompatibility of 3D-printed technology-constructed biomedical alloys. In this article, AM metallic biomaterials such as stainless steel, magnesium, cobalt–chromium, and titanium are reviewed along with their alloys. The helicopter view of essential characteristics of these additively manufactured biomaterials is comprised. The review will have a significant impact on fabricating metallic surgical equipment and its sturdiness in the biomedical field.

10

Biomateriały hybrydowe na bazie związków krzemu

John Łukasz

Wiadomości Chemiczne

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2022

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[Z] 76, 5-6

253--285

EN

Biomaterials based on silicon compounds are considered ideal building blocks of hybrid materials due to their unique structures and excellent performance. This review article highlights the selected achievements published by the Biomaterials Chemistry Research Group led by Professor Łukasz John, working at the Faculty of Chemistry, University of Wrocław, Poland. Paper deals with specific issues in the field of polysiloxanes and cage-like silsesquioxane-based hybrid materials, ranging from monomer functionalization and materials preparation to biomedical applications and tissue engineering. The findings reported in the original papers are summarized, and the challenges and prospects in the biomaterials field are also discussed for further development and exploitation.

11

Aminokwasy, glikany, peptydy i białka w ścieżkach diagnostycznych i terapeutycznych chorób cywilizacyjnych XXI wieku : projektowanie i charakterystyka fizykochemiczna oraz strukturalna

Bylińska Irena, Dzierżyńska Maria, Giżyńska Małgorzata, Guzow Katarzyna, Jankowska Elżbieta, Jurczak Przemysław, Kaczyński Zbigniew, Karska Natalia, Kowalczyk Agnieszka, Kuncewicz Katarzyna, Orlikowska Marta, Sawicka Justyna, Spodzieja Marta, Szpakowska Nikola, Szymańska Aneta, Wieczerzak Ewa, Witkowska Julia, Rodziewicz-Motowidło Sylwia

Wiadomości Chemiczne

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2022

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[Z] 76, 5-6

393--431

EN

The civilization diseases of the 21st century are non-infectious disorders, affecting a large part of modern society. They are associated with the significant development of industry and technology, and hence with environmental pollution and an unhealthy lifestyle. These factors have led to the development of many civilization diseases, which currently include: cardiovascular diseases, respiratory diseases, diabetes, obesity, malignant tumors, gastrointestinal diseases, mental disorders and allergic diseases. The development of technologies, including modern therapies and new drugs, resulted in increase in life expectancy. This creates a global problem of an aging population with an increasing number of diseases of the old age, i.e. dementias. In addition, sedentary lifestyles and changing diets are the reasons why more and more people develop metabolic diseases, as well as neurological and cognitive disorders characterized by progressive damage to nerve cells and dementia. Currently, problem on a global scale is also the growing resistance to existing antimicrobial drugs. Therefore, the scientists face many challenges related to searching for the causes of these diseases, their diagnosis and treatment. Scientific research conducted at the Department of Biomedical Chemistry at the Faculty of Chemistry of the University of Gdańsk is part of this research trend. In this publication, we discuss various research topics with the long-term aim of solving the problems associated with the diseases mentioned above. The following chapters are dedicated to (i) looking for new effective fluorophores with diagnostic and anti-cancer activity; (ii) designing of new compounds with antibacterial and antiviral activity and their synthesis; (iii) investigating the mechanisms of amyloid deposit formation by human cystatin C and possibilities of inhibition of this process; (iv) designing and studies of compounds activating the proteasome with the potential to suppress the development of neurodegenerative diseases; (v) designing peptide fibrils and hydrogels as drug carriers; (vi) searching for peptide inhibitors of immune checkpoint as potential drugs for immunotherapy; (vii) studying the mechanism of action of selected herpesviruses by determining the structure of viral proteins and (viii) studying the composition of natural glycans and glycoconjugates in order to better understand the mechanisms of interaction of bacteria with the environment or with the host.

12

Zrównoważony rozwój opakowań do żywności

Gajlewicz Izabela, Lenartowicz-Klik Marta

Przemysł Spożywczy

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2022

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T. 76, nr 8

66--71

PL

Zrównoważony rozwój to nie tylko kwestia środowiskowa, ale kompleksowe podejście firmy (wspólnie z jej klientami) do lepszego sposobu prowadzenia działalności i rozwoju. Kluczowymi czynnikami w zrównoważonej produkcji opakowań jest możliwość ich ponownego użycia i recyklingu oraz wykorzystywanie do produkcji materiałów odnawialnych i biosurowców. Opisano rolę opakowań do żywności w Gospodarce Obiegu Zamkniętego (GOZ) oraz w zrównoważonym rozwoju. Zaprezentowano najważniejsze zasady ekoprojektowania opakowań w celu ograniczenia powstawania odpadów oraz zwiększenia ich przydatności do recyklingu. Dążenie do zamkniętego obiegu surowców i odpowiedzialnego wykorzystywania materiałów opakowaniowych, w aspekcie zapobiegania dalszemu zanieczyszczeniu środowiska i zmniejszania ich śladu węglowego staje się istotnym czynnikiem przewagi konkurencyjnej w przemyśle opakowaniowym.

EN

Sustainability is not only an environmental issue, but a comprehensive approach to a better way of doing business and growing a company together with its customers. A key factor in the sustainable production of flexible packaging is its reusability, recyclability and the use of renewable materials and bio-based materials. The article describes the role of food pack-aging in the Circular Economy (circular economy) and its role in sustainable development. The most important principles of eco-design of packaging in order to reduce waste genera-tion and its suitability for recycling were presented. Striving for a closed circulation of raw materials and responsible use of packaging materials, in the aspect of preventing further environmental pollution and reducing their carbon footprint, is becoming an important competitive advantage factor in the packaging industry.

13

Vascular stents - materials and manufacturing technologies

Malisz Klaudia, Świeczko-Żurek Beata

Engineering of Biomaterials

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2022

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vol. 25, no. 166

22--28

EN

The objective of this article is to present materials and technology for the manufacture of vascular stents with appropriate design requirements. The use of the right material is very important in implantology. A biomaterial introduced into the circulatory system must be biocompatible and hemocompatible. At the same time, it should not initiate toxic, mutagenic, or immunological reactions. Currently, 316L stainless steel (316L SS), nitinol (Ni-Ti alloy) and cobalt-chromium alloy (Co-Cr) are used as standard stent materials. Additionally, drug-containing coatings are used to provide antithrombotic properties. Nowadays, scientists are trying to create biodegradable stents (BDS) using magnesium (Mg) or zinc (Zn) alloys. Laser methods are generally used to manufacture stents using Nd:YAG lasers with a pulse length in the range of several milliseconds. Material removal is based on the ejection of the melt using a high-pressure gas. The result is remelting and heat-affected zones. Various post-processing procedures are necessary to remove residues, including etching and electropolishing. Minimizing the heat-affected zone could be achieved by using femtosecond lasers. Additionally, immersion of the material in water prevents the deposition of residues on the workpiece. Interesting alternatives used in the manufacture of vascular stents are electrospinning or additive techniques. 3D printing enables obtaining of geometrically complex and personalized implants and reduces the consumption of materials and the production of waste.

14

The Contribution of Electrochemistry for a Better Understanding of the Degradation by Tribocorrosion of Metallic Implant Materials

Benea Lidia

Archives of Metallurgy and Materials

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2022

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Vol. 67, iss. 2

547--554

EN

In this paper there are presented some results obtained by open circuit potential and electrochemical impedance spectroscopy measurements from studies performed on the behavior of tribocorrosion on metallic implant biomaterials as: 304L stainless steel, Co/nano-CeO2 nanocomposite layer and Ti6Al4V untreated and oxidized alloy to form a nanoporous TiO2 film. The open circuit potential technique used in measuring the tribocorrosion process provide information on the active or passive behavior of the investigated metallic biomaterial in the biological fluid, before, during friction and after stopping the friction. Thus it clearly show a better behavior of Co/nano-CeO2 nanocomposite coatings as compared with 304L stainless steel to tribocorrosion degradation in Hank solution; as well the better behavior of nanoporous TiO2 film formed annodically on Ti6Al4V alloy surface as compared with untreated alloy to tribocorrosion degradation in artificial saliva Fusayama Meyer. The slight decrease in polarization resistance value resulted from electrochemical impedance spectroscopy measured during friction in the case of the Co/nano-CeO2 nanocomposite layer (four times smaller), compared to 304L stainless steel, whose polarization resistance decreased more than 1000 times during friction shows the higher sensitivity of stainless steel to degradation by tribocorrosion. The same behavior is observed when comparing the polarization resistance of untreated titanium alloy recorded during friction that is about 200 hundred times smaller, while the specific polarization resistance of the oxidized alloy with the nanoporous film of titanium oxide, decreases very little during friction, highlighting the beneficial effect of modifying the titanium alloy by anodic oxidation to increase its resistance to the degradation process by tribocorrosion.

15

Microstructure and antibacterial properties of a ZnO coating on a biomaterial surface

Basiaga Marcin, Paszenda Zbigniew, Lisoń Julia, Taratuta Anna, Kazek-Kęsik Alicja, Krok-Borkowicz Małgorzata, Nuckowski Paweł, Szindler Magdalena, Staszuk Marcin, Major Łukasz, Major Roman, Barabaszová Karla Čech, Dyner Marcin

Archives of Civil and Mechanical Engineering

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2022

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Vol. 22, no. 2

art. no. e93, 1--18

EN

A promising strategy for fighting the bacterial biofilm on the surface of biomaterials involves modification of their surface with the use of bactericidal and bacteriostatic coatings. Ongoing studies concentrate on the development of material that can limit bacterial colonisation and is safe for the human organism. Therefore, the current research focuses on the conditions related to implant coating to limit biofilm formation. However, previous outcomes in this area have not been satisfactory. Accordingly, the main goal of the carried out tests was to study the impact of the physicochemical properties of the surface layers on the course of processes taking place on the surface of implants made of metallic biomaterials used in the bone system. The surface of the analysed biomaterial -316LVM steel - was modified using such processes as grinding, electrochemical polishing, sandblasting, application of a ZnO layer using low-temperature Atomic Layer Deposition (ALD), and medical sterilisation. Initial assessments involved the chemical composition, phase composition, and the microstructure of the surface layer. The last stage involved microbiological studies, including an assessment of the adhesion of Gram-positive and Gram-negative bacteria to the modified surface, proliferation of MG-63 osteoblast-like cells and cytotoxicity tests. The analysis of adhesion of S. aureus and E. coli colonies confirmed that the ZnO coating is effective in reducing bacterial adhesion to the 316LVM steel substrate, regardless of the number of cycles, process temperature and surface treatment method.

16

Calibration of Selected Bulk Biomaterials Parameters for DEM Simulation of Comminution Process. Case Study: Corn and Rice Grains

Kruszelnicka Weronika, Diviš Jan, Hlosta Jakub, Gierz Łukasz, Žurovec David

Advances in Science and Technology. Research Journal

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2022

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Vol. 16, no 5

64--77

EN

Computer simulation of bulk materials behavior, including comminution and fragmentation, using DEM has been growing fast, recently. One of the important tasks to get the reliable simulation results is to provide proper materials and contact parameters, which need to be determined in a series of laboratory experiments. For comminution simulation the additional parameters describing the breakage probability and breakage functions are necessary. While some simulation parameters are available in the literature for brittle materials, valid data are lacking for biomaterials such as cereal, rice or corn grains, especially for comminution parameters. The aim of this study was to present the calibration approach and determination of materials, contact, interaction and breakage parameters for grainy biomaterials. The calibration process was done for rice and corn grains. The calibration approach consists of grains size distribution and shape characterization, friction and restitution coefficient determination, and breakage probability description. Based on the results of the experiments, the models were created in the DEM software. The result was the set of calibrated parameters for rice and corn grains.

17

A study on the physicochemical properties of surface modified Ti13Nb13Zr alloy for skeletal implants

Lisoń Julia, Taratuta Anna, Paszenda Zbigniew, Dyner Marcin, Basiaga Marcin

Acta of Bioengineering and Biomechanics

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2022

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Vol. 24, no. 1

39--47

EN

As it is widely stated in the literature, biofilms are responsible for most chronic infections, which have grown exponentially over the past three decades. The use of so-called alloys, as a new generation of materials, enables us to find the golden mean in the arena widely known as implantology. The use of the surface layer, using the chosen Atomic Layer Deposition method, is to be the basis for minimizing the risk of an organism reactions. Therefore, the primary objective of this study was to observe the impact of physicochemical properties of the surface layers (bactericidal) on the processes that occur on the implants surface made of titanium biomaterials used in bone structures. The study also attempted to evaluate the physicochemical properties of the ZnO coatings, deposited on the substrate of one of the new generation Ti13Nb13Zr alloys, using the ALD method. Included in the assessment of the physicochemical properties of the surface layers formed in this manner, we perform pitting corrosion resistance tests, scratch tests, tribological tests and surface wettability tests. Based on the obtained data, the differing physicochemical properties of the alloy with ZnO coatings are found to be dependent on the applied surface modification. For the conducted tests, differences are determined for the tests on the corrosion resistance, surface wettability and the abrasion resistance for samples with and without the ZnO coating. In addition, tests show that the coating applied to the alloy, which is previously subjected to the sand-blasted process, is characterized by improved adhesion.

18

Współczesne materiały wykorzystywane w inżynierii biomedycznej

Mordal Katarzyna, Maruszczyk Andrzej, Dobrakowski Karol

Przegląd Mechaniczny

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2021

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nr 2

28--35

PL

Artykuł jest pracą przeglądową i dotyczy nowoczesnych materiałów różnego rodzaju, które znalazły zastosowanie w biomedycynie, bioinżynierii oraz biomechanice. Poruszone zagadnienia obejmują wymagania stawiane biomateriałom oraz charakterystykę podstawowych pojęć z nimi związanych, tj. biozgodności, biotolerancji, biofunkcjonalności. W pracy przedstawiono materiały metaliczne oraz metody modyfikacji ich powierzchni w szczególności PVD i natryskiwanie plazmowe, w celu uzyskania odpowiednich własności związanych z biozgodnością i biokompatybilnością. Poza tym zostały również scharakteryzowane właściwości materiałów ceramicznych oraz możliwości ich zastosowania w różnych gałęziach bioinżynierii. Omówiono także przykłady tworzyw polimerowych oraz kompozytów, jakie współcześnie wykorzystuje się w biomechanice, stomatologii czy innych dziedzinach medycyny. Celem artykułu było przedstawienie kompleksowego przeglądu materiałów różnego rodzaju stosowanych w biomedycynie, bioinżynierii, biomechanice.

EN

This article is a review and has been devoted to all kinds of modern materials, which have been applied in biomedicine, bioengineering and biomechanics. The presented issues include requirements for biomaterials and characteristics of basic keywords related to them, i.e. biocompatibility, biotolerance, biofunctionality. The paper presents metallic materials and methods of surface modification, especially PVD and plasma spraying in order to achieving appropriate biocompatibility properties. Moreover, the properties of ceramic materials and their application in various branches of bioengineering have also been characterized. Also examples of polymeric materials and composites, that are used in biomechanics, dentistry or other fields of medicine are also have been discussed. Presenting a comprehensive overview of various types of biomaterials used in biomedicine, bioengineering, biomechanics have been the aim of the article.

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The effect of nano-HA-based biomaterial on macrophage polarization and osteogenic differentiation in co-culture system in vitro

Kazimierczak Paulina, Przekora Agata

Engineering of Biomaterials

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2021

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Vol. 24, no. 163

14

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The biological degradation of LCP plates

Nowak Marcin, Świeczko-Żurek Beata

Engineering of Biomaterials

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2021

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Vol. 24, no. 163

66