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1
Content available Surface Modification of the Ti-35Nb-7Zr-5Ta Bio Alloy by the PM-EDM Route
Hayyawi Ahmed Rabeea, Al-Ethari Haydar, Haleem Ali Hubi
Advances in Science and Technology. Research Journal
|
2024
|
Vol. 18, no 3
140--150
EN
One of the most attractive β-Ti alloys is Ti–35Nb–7Zr–5Ta wt% (TNZT) alloy, which has one of the minimal Young’s moduli among the β-Ti family (about 55 GPa) and contains no cytotoxic elements. On the other hand, β-type Ti alloys are susceptible to bacterial infection because they lack an antibacterial function and can get contaminated quickly after implantation, making surface modification a keyway to improve these alloys' antibacterial properties. A recently created technique called powder mixed-EDM can improve machining, mechanical, and biological properties at the same time. In this research, silver was added to the dielectric fluid during PM-EDM of Ti-35Nb-7Zr-5Ta wt% alloy prepared by powder metallurgy route. The surface composition, Brinell hardness, corrosion resistance, ion release, and antibacterial properties were evaluated for TNZT alloy before and after surface modification. The results show better hardness and corrosion resistance as well as lower ion release for the PM-EDMed specimen due to the presence of Ag, oxides, and carbides such as NbC, TiC, TiO2, ZrO2, and Nb2O5 that’s deposited and embedded as a hard phase in the recast layer of the machined surface. Also, the antibacterial property of the PM-EDMed specimen is effectively improved as silver is an antibiotic with a wide range, so it has favorable antibacterial properties for Gram-negative and Gram-positive bacteria.
2
Content available Metal-organic frameworks for efficient drug adsorption and delivery
Hyjek Kornelia, Jodłowski Przemysław
Scientiae Radices
|
2023
|
Vol. 2, Iss. 2
115-189
EN
In recent years, the number of materials used as drug delivery systems (DDS) has increased dramatically. The widespread use of DDSs has improved both the safety and efficacy of therapy. The systems currently in use pose numerous drawbacks and require proper improvements. Although many modern materials are being developed, metal-organic frameworks (MOFs) deserve special attention. Thermal and chemical stability, high specific surface area, low toxicity, high biocompatibility, and great potential for modification are the main features enabling MOFs to be used as DDS. In this review, we describe MOFs, their structure, synthesis, and characterization, as well as drug loading, drug release kinetics, and bioassays. A critical approach is to outline the disadvantages as well as the limitations of MOFs and to identify areas that need to be studied more thoroughly. Nonetheless, the prospective nature of MOFs as DDS and potential adsorbents in overdose or poisoning is presented and highlighted.
3
Content available remote Zastosowania wybranych metali w przyrządach do monitorowania kultur in vitro
Zarzeczny Dawid
Przegląd Elektrotechniczny
|
2022
|
R. 98, nr 2
79--82
PL
W pracy opisany został problem związany z wysokimi nakładami koniecznymi do prowadzenia badań medyczno- -biologicznych. Zaproponowano możliwość zastosowania niestandardowych rozwiązań poprawiających efektywność kosztową prowadzenia eksperymentów in vitro metodą pomiaru impedancji elektrycznej. Opisano opracowane matryce z elektrodami wykonanych z różnych materiałów do pomiaru impedancji elektrycznej komórek in vitro. Pomiary przeprowadzono wykorzystując komórki mysich fibroblastów L929 z użyciem płytek z elektrodami z Cu, Ti, NiCr i Ni. Posłużyły one do oceny wpływu danego materiału na hodowlę komórek i próbę określenia możliwości ich zastosowania w eksperymentach medyczno-biologicznych.
EN
The paper describes the problem related to the high costs necessary to conduct medical and biological research. The possibility of using non-standard solutions improving the cost-effectiveness of conducting in vitro experiments using the electrical impedance measurement method was proposed. The developed matrices with electrodes made of various materials for the in vitro measurement of cell electrical impedance are described. Measurements were performed using mouse L929 fibroblast cells using plates with Cu, Ti, NiCr and Ni electrodes. They were used to assess the effect of a given material on cell culture and to attempt to determine the possibility of their use in medical and biological experiments.
4
Content available Biopolymers as renewable polymeric materials for sustainable development : an overview
Srivastava Abhinav, Srivastava Atul Kumar, Singh Ashutosh, Singh Priti, Verma Sangeeta, Vats Monika, Sagadevan Suresh
Polimery
|
2022
|
Vol. 67, nr 5
185--196
EN
Based on the review of 115 literature items, the article presents biopolymers as renewable polymer materials for sustainable development. The types of biopolymers and their applications are discussed, including biopolymers based on starch, cellulose, bacteria, soy and natural polyester. It also describes the issues of biocompatibility, the principles of sustainable chemistry and sustainable development, as well as market trends and future application directions.
PL
Na podstawie przeglądu 115 pozycji literaturowych w artykule przedstawiono biopolimery jako odnawialne materiały polimerowe dla zrównoważonego rozwoju. Omówiono rodzaje biopolimerów i ich zastosowanie, w tym biopolimery na bazie skrobi, celulozy, bakterii, soi i naturalnego poliestru. Opisano również zagadnienia dotyczące biokompatybilności, zasad zrównoważonej chemii i zrównoważonego rozwoju oraz trendy rynkowe i perspektywiczne kierunki zastosowań.
5
Content available Biomimetic scaffolds based on chitosan in bone regeneration. A review
Kołakowska Anna, Gadomska-Gajadhur Agnieszka, Ruśkowski Paweł
Chemical and Process Engineering
|
2022
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Vol. 43, nr 3
305–-330
EN
Chitosan (CS) is a polysaccharide readily used in tissue engineering due to its properties: similarity to the glycosaminoglycans present in the body, biocompatibility, non-toxicity, antibacterial character and owing to the fact that its degradation that may occur under the influence of human enzymes generates non-toxic products. Applications in tissue engineering include using CS to produce artificial scaffolds for bone regeneration that provide an attachment site for cells during regeneration processes. Chitosan can be used to prepare scaffolds exclusively from this polysaccharide, composites or polyelectrolyte complexes. A popular solution for improving the surface properties and, as a result enhancing cell-biomaterial interactions, is to coat the scaffold with layers of chitosan. The article focuses on a polysaccharide of natural origin – chitosan (CS) and its application in scaffolds in tissue engineering. The last part of the review focuses on bone tissue and interactions between cells and chitosan after implantation of a scaffold and how chitosan’s structure affects bone cell adhesion and life processes.
6
Content available Corrosion Assessment of Nickel - Base - Dental Alloys in Ringer Biological Solution Studied by Electrochemical Techniques
Benea Lidia, Dragus L., Mocanu D.
Archives of Metallurgy and Materials
|
2022
|
Vol. 67, iss. 2
529--533
EN
The aim of this paper was to study the corrosion behavior of Nickel - Base - Dental Alloys in Ringer biological fluid. The Nickel base alloys are widely used for medical purposes, especially for prosthetic works in the field of dentistry. The applied electrochemical methods used for corrosion investigations are Open Circuit Potential, Linear Polarization during time of immersion in order to calculate the polarization resistance and corrosion rate. Potentiodynamic Polarization diagrams was performed to appreciate the passive domain. Ni-Cr Ugirex alloy show a better corrosion resistance in Ringer solution which will be reflected in a longer life of the dental structures made with this alloy as compared to the Ni-Cr Ducinox alloy, which will result in dental structures with a shorter lifespan. The electrochemical studies has shown that the alloy have a corrosion behavior similar to a passivating alloy, displaying an extensive passivity area due to formation of an oxide film.
7
Współczesne materiały wykorzystywane w inżynierii biomedycznej
Mordal Katarzyna, Maruszczyk Andrzej, Dobrakowski Karol
Przegląd Mechaniczny
|
2021
|
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.
8
Content available Bioresorbable polymeric materials – current state of knowledge
Wiśniewska Kamila, Rybak Zbigniew, Wątrobiński Marcin, Struszczyk Marcin H., Filipiak Jarosław, Żywicka Bogusława, Szymonowicz Maria
Polimery
|
2021
|
T. 66, nr 1
3--10
EN
Bioresorbable materials are used in medicine for fixing, correcting or stabilizing bones in various anatomical areas, and the market for such materials is growing rapidly worldwide. The use of polymers for their production is associated with the ability to control their properties. They are prepared from bioresorbable materials with variable surface, geometry, porosity, as well as mechanical and surface properties. They support bone healing and are suitable for tissue regeneration due to their biodegradability and biocompatibility. We believe that materials from biodegradable polymers will play an increasingly important role in future medicine.
PL
Materiały bioresorbowalne są szeroko stosowane wmedycynie do uzupełniania ubytków kości w różnych stanach chorobowych i powypadkowych, a także do nadbudowy iodbudowy kostnej oraz mocowania złamań. Rynek tego typu materiałów szybko się rozwija na całym świecie. Powszechność wykorzystania polimerów jest związana z możliwością kontrolowania ich właściwości. Zaletą materia-łów polimerowych jest możliwość zmiany powierzchni, geometrii, porowatości, właściwości mechanicz-nych ipowierzchniowych, atakże ich biodegradowalność ibiokompatybilność. Materiały z polimerów biodegradowalnych będą zapewne odgrywać coraz poważniejszą rolę w medycynie przyszłości.
9
Nanocząstki magnetyczne w diagnostyce i leczeniu chorób nowotworowych
Piech Radosław, Skrzypiec Maksymilian, Drabczyk Anna
Inżynieria Materiałowa
|
2021
|
Vol. 42, nr 6
15--23
PL
W ostatnich latach intensywnie bada się nanocząstki magnetyczne (MNPs) pod względem użycia ich w medycynie, głównie w walce z chorobami nowotworowymi. Przy użyciu nanocząstek magnetycznych możliwe jest celowe, nieinwazyjne dostarczenie leku w miejsce kumulacji komórek rakowych za pomocą m.in. pola magnetycznego, co faworyzuje je w stosunku do klasycznych cytostatyków, które uszkadzają również zdrowe komórki i oddziałują na cały organizm. Nanocząstki magnetyczne mogą służyć również do wykrycia i zdiagnozowania chorób nowotworowych, jak również określania postępów terapii antynowotworowej. Różnorodność zastosowania nanocząstek magnetycznych sprawia, że są one postrzegane jako innowacyjny i przełomowy środek do zwalczania chorób nowotworowych. W artykule zebrano informacje na temat najpopularniejszych metod wytwarzania nanocząstek magnetycznych i ich wykorzystania w medycynie oraz poruszono kwestię biokompatybilności i toksyczności tychże struktur.
EN
Magnetic nanoparticles have attracted attention because of their properties that make it possible to use them to treat cancer through targeted therapy. By using a magnetic field to target nanoparticles containing drugs, it is possible to reach cancer cells directly and fight them in their place of growth without affecting healthy cells or the body as a whole. Magnetic nanoparticles can be used in diagnostics to detect and diagnose cancer as well as to determine the progress of anti-cancer therapy. In this paper, we mentioned the biocompatibility and toxicity of magnetic nanoparticles because their use also carries the risk of health damage which is a necessity for further research on this topic.
10
Content available Tailoring hydrophilicity of poly(butylene succinate) (PBS) copolymers
Zarei Moein, El Fray Miroslawa
Engineering of Biomaterials
|
2021
|
Vol. 24, no. 163
64
11
Content available Biocidal properties of copper nanoparticles
Bayade Ghislaine, Wu Menq Rong, Massicotte Richard, Deryabin Dmitrij Gennad’evich, Yahia L’Hocine
Engineering of Biomaterials
|
2021
|
Vol. 24, no. 159
2--17
EN
Metal nanoparticles (NPs) with antibacterial properties represent a promising alternative approach to antibiotics, whose overuse has led to the appearance of drug-resistant bacteria. This article addresses particularly copper (Cu) nanoparticles since Cu is a structural constituent of many enzymes in living microorganisms. In addition, Cu has a better antibacterial effect and minimal cost compared to silver. The properties of Cu nanoparticles are described here: antibactericide, toxicity mechanisms, oxidation, and copper oxide biocompatibility for medical applications. Along with the advantages of Cu nanoparticles, the nanotoxicity still remains to take into consideration such as in targetting different bacteria strains, bacteria’s resistance, the effect of size, the effect of NP chemical composition, the effect of oxidation, and the corona phenomenon effect. The methodology of Cu nanoparticles synthesis, related to the biocidal effect, is illustrated by some limitations and some breakthrough such as chitosan stabilizer (CS), laser ablation, plasma induction, and flow-levitation method (FL). Although Cu nanoparticles are beneficial for bacterial elimination, these nanoparticles are graded harmful to the human body and the environment because of their toxic effects. Thus, it requires further improvement and further investigation to create super antibacterial Cu nanoparticles, to develop some interesting research work around this subject, and to reveal some promising medical findings.
12
Content available Bioactive hydrocolloid-type biomaterials for potential management of highly exuding wounds
Wojcik Michał, Kazimierczak Paulina, Vivcharenko Vladyslav, Przekora Agata
Engineering of Biomaterials
|
2021
|
Vol. 24, no. 163
49
13
Content available Adhesion, microstructure and surface topography of mesoporous, Cu-doped sol-gel glass/zein coatings electrophoretically deposited on Ti-13Nb-13Zr alloy substrates
Maciąg Filip, Cholewa-Kowalska Katarzyna, Dziadek Michał, Moskalewicz Tomasz
Engineering of Biomaterials
|
2021
|
Vol. 24, no. 163
51
14
Content available Influence of the different composites (PLA/PLLA/HA/β-TCP) contents manufactured with the use of additive laser technology on the biocompatibility
Woźna Anna E., Junka Adam, Hoppe Viktoria W.
Acta of Bioengineering and Biomechanics
|
2021
|
Vol. 23, no. 2
169--180
EN
Purpose: In recent years, it has become extremely important to search for more and more natural and biocompatible materials that allow for the reconstruction of natural tissues with as few side effects as possible. The aim of the present paper is to define mechanical properties such as compressive stress and Young’s Modulus and to estimate the ability of human bone cell strains to form biofilm on bioresorbable composites manufactured of polylactide and poly-l-lactide (PLA and PLLA) and hydroxyapatite and tricalcium phosphate (HA and β-TCP) with the use of Selective Laser Sintering (SLS) method. Methods: Microbiological tests were conducted on three variants of solid specimen made with additive laser technology. Samples with different chemical compositions were made with appropriate manufacturing parameters ensuring stability of both composite ingredients. Microbiological in vitro tests helped to determine cytotoxicity of specific samples toward bone cells. Results: The results obtained indicate significantly increased ability of osteoblasts to form colonies on the surface of materials with higher content of hydroxyapatite ceramics compared to surfaces of lower hydroxyapatite content. Conclusions: The data provided can be useful for future applications of the SLS technology in production of bioresorbable PLA/PLLA/HA/β-TCP medical implants.
15
Content available Biological evaluation of selective laser melted magnesium alloy powder
Pawlak Andrzej P., Szymczyk-Ziółkowska Patrycja E., Junka Adam, Chlebus Edward
Acta of Bioengineering and Biomechanics
|
2021
|
Vol. 23, no. 1
121--133
EN
Purpose: The current study examined magnesium alloy AZ31B specimens manufactured with Additive Manufacturing method (selective laser melting – SLM) to investigate the applicability of this technology for the production of medical devices. Methods: Osteoblast cells and bacterial biofilm growth ability on specimen was examined and the effect of surface state on corrosion resistance was evaluated by electrochemical and immersion methods. Results: High survival of hFOB cells, as well as a strong tendency for Pseudomonas aeruginosa and Staphylococcus aureus biofilm proliferation on the surface of the tested specimens were shown. SLM-processed AZ31B alloy has a higher corrosion resistance in 0.9% NaCl solution and in a multi-electrolyte saline solution than the material in a conventional form of a rolled sheet. Conclusions: It has been demonstrated that the strong development of the surface of as-built processed specimens results in a significantly increased corrosion rate, which hinders the production of complex structures in tissue engineering products that support cell ingrowth.
16
Content available Struktura geometryczna powierzchni próbek ze stopu magnezu AZ31 po polerowaniu oraz modyfikacji biopolimerami wytwarzanymi metodą CVD
Gołąbczak Marcin, Maksim Przemysław, Skowron Marcin, Kyzioł Karol, Gołąbczak Andrzej, Działo Adam, Szkatulski Piotr
Obróbka Metalu
|
2020
|
nr 4
49--54
PL
W artykule przedstawiono wyniki badań dotyczące porównania parametrów struktury geometrycznej powierzchni (SGP) próbek ze stopu magnezu AZ31 po polerowaniu oraz po wytworzeniu na ich powierzchniach różnego typu biokompatybilnych powłok ochronnych. Zakres prezentowanych badań obejmował proces przygotowania próbek do ich cięcia metodą WEDM, polerowania krążkami ściernymi, chemicznego trawienia oraz modyfikację ich powierzchni poprzez wytworzenie biopolimerowych powłok ochronnych metodą chemicznego osadzania z fazy gazowej CVD.
EN
In this paper the results of investigations concerning the comparison of surface geometric structure parameters of samples made of magnesium alloy AZ31 were presented. The samples were polish and coated of various types of biocompatible protective coatings. The scope of presented studies included the process of sample preparation by WEDM cutting, abrasive disc polishing, chemical pickling and modification of their surface by producing biopolymer protective coating by chemical deposition from gas phase (CVD).
17
Content available Modification of carbon materials surfaces by plasma: effect of the introduced functional groups on biocompatibility and adhesion of microorganisms
Duch Joanna, Pajerski Wojciech, Gołda-Cępa Monika, Ochońska Dorota, Piskorz Witold, Brzychczy-Włoch Monika, Rysz Jakub, Kotarba Andrzej
Engineering of Biomaterials
|
2020
|
Vol. 23, no. 158 spec. iss.
42
18
Content available How to stimulate polymeric surfaces biocompatibility and hydroxyapatite formation: experiments supported by MD simulations
Gołda-Cępa Monika, Chytrosz Paulina, Riedlova Kamila, Kulig Waldemar, Ćwiklik Łukasz, Kotarba Andrzej
Engineering of Biomaterials
|
2020
|
Vol. 23, no. 158 spec. iss.
40
19
Content available Functionalization of polyurethane surfaces for improved biocompatibility
Chytrosz Paulina, Gołda-Cępa Monika, Kotarba Andrzej
Engineering of Biomaterials
|
2020
|
Vol. 23, no. 158 spec. iss.
37
20
Content available Study of selected physical, chemical and biological properties of selected materials intended for contact with human body
Mrówka Maciej, Machoczek Tomasz, Jureczko Paweł, Szymiczek Małgorzata, Skonieczna Magdalena, Marcoll Łukasz
Polish Journal of Chemical Technology
|
2019
|
Vol. 21, nr 1
1--8
EN
The purpose of the conducted study was to analyse new materials intended for contact with the human body in view of their physical, chemical and biological properties. The authors have put to test six commercially available materials, four out of which were composite polyamide 12-based materials, while two were polyurethanes. The examined materials were assessed in terms of the surface. Subsequently, their hardness and biocompatibility were tested. The authors devoted major attention to the tests of absorption and emissivity of water, the pH = 7.4 PBS buffer solution and pH = 4.3 artificial sweat in temperatures of 21°C and 37°C. The results of the tests have confirmed the non-toxicity of all the tested materials and allowed to provide their characteristics in terms of their surface, hardness, as well as absorption and emissivity of various body fluids. Both polyamide 12 and the tested polyurethanes are classified as thermoplastics that may be used in additive technology.
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