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1

Structure-performance engineering of recycled acrylic membranes for air gap membrane distillation

Mohammed Safa, Waisi Basma

Ecological Chemistry and Engineering. S

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2026

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Vol. 33, nr 1

63--79

EN

Air Gap Membrane Distillation (AGMD) is an emerging and promising technology in separation processes, but its industrial adoption is limited by relatively low permeate flux. Conventional AGMD systems typically utilise thin film-cast polymeric membranes. However, electrospun nanofibrous membranes have become more popular since they possess a highly interconnected porous structure, which is able to increase mass transfer performance and availability. In this study, recycled acrylic (RA) waste powder was used to prepare a precursor solution to fabricate two types of membranes: thin film-cast membranes and electrospun nonwoven nanofibrous membranes to be evaluated in the AGMD process for water desalination application. The fabricated RA-based membranes underwent characterisation by scanning electronic microscopy (SEM), mechanical properties, water contact angle (WCA), and Fourier transform infrared spectroscopy (FTIR). Based on the results obtained, the nanofiber membrane exhibited a higher contact angle, porosity, and elasticity than the thin film cast membrane. RA-based membranes were tested in the AGMD system at different feed temperatures (45 °C, 55 °C, and 65 °C). The electrospun nanofibrous membrane performed better than the thin-film cast membrane in both permeate flux and salt rejection. The temperature of the feed increased correspondingly with the flux of permeate as well as the salt rejection. The cast membrane of thin film attained a flux of permeate of 1.48 kg/(m2‧h) with 99.98 % salt rejection. Conversely, the electrospun nanofibrous membrane had better performance with a significantly higher permeate flux rate of 7.69 kg/(m2‧h) and an almost ideal salt rejection of 99.99 %.

2

Nowe materiały funkcjonalne w konstrukcji czujników potencjometrycznych typu solid contact

Pietrzak Karolina, Wardak Cecylia

Wiadomości Chemiczne

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2025

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[Z] 79, 1-2

83--97

EN

Among all kinds of ion-selective electrodes, those with solid contact (SC-ISEs) are currently particularly popular. The elimination of the internal solution significantly improved electrical parameters and also enabled miniaturization, storage and transport of the sensors. However, not all active substances and electroactive materials can be successfully used to prepare these electrodes. The first of them must ensure, among other things, sufficient selectivity of the sensors towards the determined ion in the presence of other accompanying ions, while the second – good stability and reversibility of the potential. Therefore, new functional materials are constantly needed to obtain better and better potentiometric sensors, which can also be used in multi-sensor platforms for comprehensive determination of ion content directly in the in situ environment. This article is devoted to the topic of new functional materials that can be used to improve the operation of potentiometric sensors and expand the scope of their applications. All described electrodes were constructed as part of scientific research conducted during the doctoral studies of the author. Their main goal was to develop new ion-selective electrodes with solid contact with good analytical parameters and sensitive to selected ions (NO3-, Cl–, K+, Cu2+, UO22+), using new ionophores or electroactive materials for their construction. Many different sensors were constructed and tested, the design of which differed, among others, in the material of the internal electrode, the composition of the ion-selective membrane (qualitative and quantitative), and the type and method of using the solid contact material (as an intermediate layer or an additional component of the membrane). New materials were synthesized, their properties were tested using many different analytical methods and then used to prepare ion-selective electrodes. The values of the most important analytical parameters were determined for the obtained sensors and, on their basis, the influence of individual electrode modifications on their operation was determined. Using some of the obtained electrodes, the content of selected ions in natural samples was also analyzed, confirming that they can be used in practical analysis.

3

Czujniki fluorymetryczne do analizy zanieczyszczeń środowiska

Stelmach Emilia, Kalisz Justyna, Maksymiuk Krzysztof, Michalska Agata

Wiadomości Chemiczne

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2025

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[Z] 79, 11-12

1065--1078

EN

Volatile organic compounds (VOCs) and plasticizers, due to their toxicity, pose significant environmental contamination risks. Consequently, there is a strong demand for simple and cost-effective methods for their detection in environmental samples. In this context, fluorimetric sensors are becoming an attractive tool for monitoring concentration changes of these analytes. Several fluorescence-based strategies have already been demonstrated as highly efficient for both qualitative and quantitative analysis of VOCs and plasticizers in environmental matrices, with turn on fluorescence approaches being particularly important. These strategies typically rely on the interaction of fluorometric dyes or conjugated polymers, embedded in polymeric matricessuch as nanoparticles or nanofibers, with the target analytes. Such approaches show great potential for real-time monitoring of hazardous pollutants in environmental applications, offering cost-efficient, simple and portable alternatives to conventional analytical techniques.

4

Nanofibrous membranes loaded with bupivacaine and carica papaya extract for pain management and wound healing in postoperative wounds

Zhang Aiqin, Hussain Shaik Althaf, Alrubie Turki Mayudh, Jiang Rong

Materials Science Poland

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2024

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Vol. 42, No. 2

143--159

EN

The pursuit of effective paint management and would healing strategies within modern medicine remains a challenge. Postoperative skin injuries arising from surgeries and traumatic incidents often bring substantial discomfort, necessitating interventions that combine optimal pain relief with accelerated wound recovery. In this research, bupivacaine and carica papaya extract were loaded into polycaprolactone/polyvinyl alcohol membranes in order to develop a pain-relieving wound dressing material for pain management and skin wound healing after surgeries. The in vitro experiments were used to characterize the pain-relieving scaffold. An in vivo study of the excisional wound was carried out in a rat model. Histopathological examinations, wound closure studies, and pain-related behavioral factors were utilized to assess the in vivo pain management and wound healing efficacy of the dressings. Results showed that our developed constructs were not toxic and modulated inflammatory responses. In vivo study showed that this system could successfully close wounds and decrease the sensitivity of animals to painful stimuli. These wound dressings may potentially be considered dual function wound dressings to treat skin injuries.

5

Synthesis of Molybdenum Oxide Nanofibers with Multiple Surface Facets Via Electropsinning Followed by Rapid Thermal Treatment

Ryu Cheol-Hui, Lee Young-In

Archives of Metallurgy and Materials

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2024

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Vol. 69, iss. 2

493--496

EN

A MoO3 nanofiber prepared by electrospinning and subsequent heat treatment is attracting significant attention due to its structural advantages. Vibrant studies are being conducted to control its morphology and diameter to improve its properties. In this study, we demonstrated the synthesis of α-MoO3 nanofibers with multiple surface facets by controlling the heating rate and temperature in the heat treatment step for removing polymer and crystallizing MoO3 from the electrospun polymer/precursor nanofibers. The analysis results show that the faster heating rate and higher heat treatment temperature in the thermal treatment process are more favorable for forming a shape in which particles with facet planes are connected. Finally, we observed the morphological change according to the heat treatment time to confirm the effect of the heat treatment conditions on the shape of MoO3 and interpreted the results in terms of nucleation and crystal growth.

6

Adipose derived stem cells and ginkgo biloba extract-loaded PCL/gelatin nanofibrous scaffolds for peripheral nerve injury repair: The impact of physical activity

Gong Hua, Chen Zhengtian

Acta of Bioengineering and Biomechanics

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2023

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Vol. 25, no. 4

35--47

EN

Peripheral nerve damages take place as a result of trauma, compression, or disease, resulting in sensory loss, impaired motor function, and subsequent challenges. In the current study, ginkgo biloba extract was loaded into PCL/gelatin scaffolds through electrospinning method. The scaffolds were characterized in vitro using various studies. The prepared nanofibrous scaffolds were rolled up to make neural guidance channels. Then, the conduits were seeded with adipose derived stem cells and transplanted into a rat model of sciatic nerve injury. The scaffolds were not toxic and had optimal tensile and suturability. The animals treated with the conduits that delivered adipose derived stem cells and ginkgo biloba extract and received the treadmill exercise had significantly higher motor and sensory functions recovery. In addition, histopathological examinations showed beneficial role of the exercise plan on the nervous system repair.

7

Simple synthesis of Black TiO2 Nanofibers Via Calcination in Inert Atmosphere

Ji Myeongjun, Kim Eung Ryong, Park Mi-Jeong, Jeon Hee Yeon, Moon Jaeyun, Byun Jongmin, Lee Young-In

Archives of Metallurgy and Materials

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2022

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Vol. 67, iss. 4

1481--1486

EN

Black TiO2 nanofibers have recently emerged as a promising material that has both advantages of black metal oxide and one-dimensional nanostructure. However, current reduction-based synthesis approaches are not compatible with practical applications because these processes require high process costs, complicated processes, and sophisticated control. Therefore, it is still necessary to develop a simple and facile method that can easily introduce atomic defects during the synthesis process. This work suggests an electrospinning process with an antioxidant and subsequent calcination process for the facile synthesis of black TiO2 nanofibers. The synthesized black TiO2 nanofiber has an average diameter of 50.3 nm and a rutile structure. Moreover, this nanofiber represented a noticeable black color and a bandgap of 2.67 eV, clearly demonstrating the bandgap narrowing by the introduced atomic defects.

8

Influence of heat treatment of carbon nanofibers on genotoxicity

Frączek-Szczypta Aneta, Panek Agnieszka, Marczyk Monika, Zambrzycki Marcel

Engineering of Biomaterials

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2021

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Vol. 24, no. 163

115

9

Characterization of morphology and optical properties of SnO₂ nanowires prepared by electrospinning

Tański Tomasz, Smok Weronika, Matysiak Wiktor

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2021

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Vol. 69, nr 5

art. no. e137507

EN

The growing interest in one-dimensional tin oxide-based nanomaterials boosts research on both high-quality nanomaterials as well as production methods. This is due to the fact that they present unique electrical and optical properties that enable their application in various (opto)electronic devices. Thus, the aim of the paper was to produce ceramic SnO₂ nanowires using electrospinning with the calcination method, and to investigate the influence of the calcination temperature on the morphology, structure and optical properties of the obtained material. A scanning electron microscope (SEM) and Fourier-transform infrared spectroscopy (FTIR) were used to examine the morphology and chemical structure of obtained nanomaterials. The optical properties of manufactured one-dimensional nanostructures were investigated using UV-Vis spectroscopy. Moreover, based on the UV-Vis spectra, the energy band gap of the prepared nanowires was determined. The analysis of the morphology of the obtained nanowires showed that both the concentration of the precursor in the spinning solution and the calcination temperature have a significant impact on the diameter of the nanowires and, consequently, on their optical properties.

10

Elektroprzędzone nanowłókna polimerowe do zastosowań medycznych

Winkler Angelika, Maliszewska Irena, Czapka Tomasz

Polimery

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2020

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T. 65, nr 1

18--24

PL

Nanowłókna polimerowe wzbudzają obecnie ogromne zainteresowanie ze względu na ich potencjalne wykorzystanie w różnych procesach technologicznych, np. w produkcji tkanin lub wytwarzaniu membran. Włókna te wykazują wyjątkowe właściwości, takie jak: duży stosunek powierzchni do objętości oraz duża porowatość. Znanych jest kilka metod wytwarzania nanowłókien, jednak ze względu na prostotę, powtarzalność i niewielkie koszty, najpowszechniej stosowane jest przędzenie elektrostatyczne. Przedstawiono przegląd najnowszych osiągnięć w zakresie zastosowań nanowłókien polimerowych w medycynie, obejmujący zagadnienia materiałów opatrunkowych, uwalniania substancji aktywnych oraz inżynierii tkankowej.

EN

Polymer nanofibers are currently of great interest in terms of their potential use in various technological processes, e.g. in the manufacture of textiles or membranes. These fibers are characterized by extraordinary properties such as high surface to volume ratio and high porosity. There are several methods of manufacturing nanofibers, but for reasons of simplicity, repeatability and low cost, electrostatic spinning is the most common. The article presents a review of the latest developments in the application of polymer nanofibers in medicine, including such issues as bandage materials, release of active substances and tissue engineering.

11

The Effect of Electric Field on Nanofibers Preparation in Cylindrical-Electrode-Assisted Solution Blowing Spinning

Wenxing Zheng, Wenyu Zheng, Xinhou Wang

Autex Research Journal

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2020

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Vol. 20, no. 4

497--505

EN

Cylindrical-electrode-assisted solution blowing spinning (CSBS) is a novel nanofiber preparation method. The electric field of CSBS not only is one of the main innovations of this technology but also plays a key role in the preparation of nanofibers. In this article, the electric field of CSBS and the influences of electric field on the preparation of nanofibers were studied systematically for the first time by simulations, theoretical analyses, and experiments. This paper innovatively established the coaxial capacitor model for studying the CSBS electric field. The effects of electric field on the preparation and morphology of CSBS nanofibers were theoretically investigated by using this model. The theoretical formulas that can express the relationships between the various electric field variables were obtained. The electric field strength distribution, voltage distribution, and the relationships between the electric field parameters of CSBS were obtained by finite element simulations. The simulations’ results show that reducing the diameter of cylinder (DC) or increasing the voltage increase the electric field strength of the jet surface. Experimental results reveal that increasing voltage or reducing DC can reduce the diameter of nanofibers. The experimental and simulation results prove the correctness of the theoretical research conclusions. The theoretical and simulation conclusions of this paper lay a theoretical foundation for further study of CSBS electric field. The experimental conclusions can directly guide the controllable preparation of CSBS nanofibers.

12

Antibacterial Effect of Graphene and Graphene Oxide as a Potential Material for Fiber Finishes

Olborska Anna, Janas-Naze Anna, Kaczmarek Łukasz, Warga Tomasz, Che Halin Dewi Suriyani

Autex Research Journal

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2020

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Vol. 20, no. 4

506--516

EN

The dynamic development of the world economy entails an increasing exchange of goods and population. This means that we are globally struggling with increasing levels of nosocomial infections. The increasing use of antimicrobial agents triggers the microorganisms’ immune system, which in turn contributes to the increasing amount of antibiotic-resistant microorganisms, making it necessary to control the development of unwanted microorganisms, including bacteria, especially those carried on the body and clothing. Currently, there is no unique method to combat the multiplication of microorganisms and eliminate threats to human health and life. For this reason, this article describes the possibilities of using graphene materials as a potential additive materials in fiber finishes as an antibacterial aspect in various areas of life. However, the literature does not explain the mechanisms behind the antibacterial properties of graphene, strongly limiting its textile application. The research is conducted using molecular dynamic simulations of interaction between graphene materials and murein. The obtained results suggest the electrostatic mechanism of blocking the growth and division of bacteria. Due to the physical interaction, bacterial cell becomes “trapped” without changing its growth parameters. This may lead to an increase of internal cell pressure, rupture of its wall and consequently its death.

13

Thin SnO2 Films Manufactured Via the Sol-Gel and Electrospinning Methods

Matysiak W., Tański T., Smok W., Polishchuk O.

Archives of Metallurgy and Materials

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2020

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Vol. 65, iss. 2

761--765

EN

The aim of this work was to produce a thin SnO2 film by a technique combining the sol-gel method and electrospinning from a solution based on polyvinylpyrrolidone and a tin chloride pentahydrate as a precursor. The spinning solution was subjected to an electrospinning process, and then the obtained nanofiber mats were calcined for 10 h at 500°C. Then, the scanning electron microscopy morphology analysis and chemical composition analysis by X-ray microanalysis of the manufactured thin film was performed. It was shown that an amorphous-crystalline layer formed by the SnO2 nanofiber network was obtained. Based on the UV-Vis spectrum, the width of the energy gap of the obtained layer was determined.

14

Electrospinning for drug delivery systems: potential of the technique

Dzierzkowska Ewa, Stodolak-Zych Ewa

Engineering of Biomaterials

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2019

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Vol. 22, no. 149

10--14

EN

Electrospinning is a technique used to manufacture nano- and submicron fibers based on synthetic or natural polymers. Additionally, biomaterials used in the electrospinning procedure can be modified by bioactive compounds, e.g. peptides or growth factors. The microstructure of the obtained fibrous scaffolds mimics natural extracellular matrix (ECM) environment. The size and the microstructure of the fibrous scaffolds are considered to be suitable for cells adhesion and proliferation. Various design features of the electrospinning device (e.g. the shape of the collector, the shape of the nozzle, the direction of the applied voltage) or electrospinning conditions (e.g. humidity, temperature) allows to control properties of the fibers (their shape, diameter, porosity). Novel structures, such as core-shell fibers, porous fibers attracted wide attention due to their properties and functionalities. Porous fibers or fibers with nanoscaled structures can be obtained in several ways. These methods are mainly focused on using high humidity and highly volatile solvent applied in the electrospinning process. The core-shell structure can be obtained by coaxial electrospinning. That binary fiber has ability to control the release rate of drug enclosed within the shell or core. The drug release profile can be also modified by loading the pharmacological agent either directly to the spinning solution or its post immobilization.This diversity of the electrospun fibers is a reason for non-woven materials to be considered for application as drug carriers. The review of electrospinning methods presented here proves that the control over fibers surface area, morphology and the choice of polymer enable modelling of drug release kinetics.

15

Effect of PLCI/PCL nanofibers-based scaffolds with fibrin assembly containing platelet lysate on skin cells

Blanquer Andreu, Filová Elena, Brynda Eduard, Kucerová Johanka, Jencová Vera, Koprivová Barbora, Procházková Renata, Bacáková Lucie

Engineering of Biomaterials

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2019

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Vol. 22, no. 153 spec. iss.

15

16

Manufacturing process and characterization of electrospun PVP/ZnO NPs nanofibers

Matysiak W., Tański T., Zaborowska M.

Bulletin of the Polish Academy of Sciences. Technical Sciences

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2019

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Vol. 67, nr 2

193--200

EN

Constantly developing nanotechnology provides the possibility of manufacturing nanostructured composites with a polymer matrix doped with ceramic nanoparticles, including ZnO. A specific feature of polymers, i.e. ceramic composite materials, is an amelioration in physical properties for polymer matrix and reinforcement. The aim of the paper was to produce thin fibrous composite mats, reinforced with ZnO nanoparticles and a polyvinylpyrrolidone (PVP) matrix obtained by means of the electrospinning process and then examining the influence of the strength of the reinforcement on the morphology and optical properties of the composite nanofibers. The morphology and structure of the fibrous mats was examined by a scanning electron microscope (SEM) with an energy dispersive spectrometer (EDS) and Fourier-transform infrared spectroscopy (FTIR). UV –Vis spectroscopy allowed to examine the impact of zinc oxide on the optical properties of PVP/ZnO nanofibers and to investigate the width of the energy gap.

17

Analiza właściwości materiałów filtracyjnych z dodatkiem nanowłókien

Dziubak Tadeusz, Yendzheiovskyi Yurii

Biuletyn Wojskowej Akademii Technicznej

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2019

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Vol. 68, nr 1

111--129

PL

Przedstawiono właściwości nanowłókien, metody ich wytwarzania oraz obszary zastosowania. Zaprezentowano oraz przeanalizowano parametry charakteryzujące materiały filtracyjne z dodatkiem nanowłókien. Opracowano metodykę badań charakterystyki aerodynamicznej oraz charakterystyki: skuteczności, dokładności i oporu przepływu wkładów filtracyjnych z dodatkiem nanowłókien w zależności od współczynnika chłonności pyłu km. Przedstawiono charakterystyczne parametry filtracyjne materiałów z dodatkiem nanowłókien. Wykonano pięć wkładów różniących się materiałem filtracyjnym z dodatkiem nanowłókien oraz bez tej warstwy. Opracowano warunki badań oraz przygotowano stanowisko badawcze. Przeprowadzono badania charakterystyk aerodynamicznych wykonanych wkładów filtracyjnych oraz charakterystyk skuteczności i dokładności filtracji i oporów przepływu wkładu standardowego (celulozowego), a także z dodatkiem nanowłókien. Potwierdzono pozytywny wpływ warstwy nanowłókien na wzrost skuteczności i dokładności filtracji powietrza wlotowego do silnika. Dokonano oceny składu granulometrycznego pyłu w powietrzu za standardowym wkładem filtracyjnym i wkładem z dodatkiem nanowłókien.

EN

Nanofiber properties, methods of their production, and areas of their application have been presented. Parameters describing filtration materials with nanofibers addition were presented, and analyzed. Methodology for testing aerodynamic characteristics as well as characteristics of: efficiency, accuracy, and filter cartridges resistance with nanofibers addition, depending on the dust mass loading km were developed. Characteristic filtration parameters of the materials with nanofibers addition are presented. Five filtration inserts, differing in the filtration material with nanofibers addition, and without this layer were made. Test conditions were developed as well as a test stand was prepared. Aerodynamic characteristics tests of filter cartridges as well as filtration efficiency, accuracy, and flow resistance of standard (cellulose) cartridge, and the ones with nanofibers addition were performed. The positive effect of nanofiber layer on efficiency, and accuracy increase in the inlet engine air filtration was confirmed. Granulometric composition of air dust was assessed on a standard filter cartridge, and on a cartridge with nanofibers addition.

18

Electrospinning of bio-nano-cellulose (BNC) nanofibers equipment

Ceynowa P., Kubiak K., Kołodziejczyk M., Gilewicz A., Warcholiński B., Bielecki S., Mitura S.

Engineering of Biomaterials

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2018

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Vol. 21, no. 148

18

19

Multistep Heat-Treatment Effects on Electrospun Nd-Fe-B-O Nanofibers

Jeon E. J., Eom N. S. A., Lee J., Lee B., Cho H. M., On J. S., Choa Y.-H, Kim B. S.

Archives of Metallurgy and Materials

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2018

|

Vol. 63, iss. 3

1433--1437

EN

Neodymium-Iron-Boron (Nd-Fe-B) magnets are considered to have the highest energy density, and their applications include electric motors, generators, hard disc drives, and MRI. It is well known that a fiber structure with a high aspect ratio and the large specific surface area has the potential to overcome the limitations, such as inhomogeneous structures and the difficulty in alignment of easy axis, associated with such magnets obtained by conventional methods. I n this work, a suitable heat-treatment procedure based on single-step and multistep treatments to synthesize sound electrospun Nd-Fe-B-O nanofibers of Φ572 nm was investigated. The single-step heat-treated (directly heat-treated at 800°C for 2 h in air) samples disintegrated along with the residual organic compounds, whereas the multistep heat-treated (sequential three-step heat-treated including three steps;: dehydration (250°C for 30 min in an inert atmosphere), debinding (650°C for 30 min in air), and calcination (800°C for 1 h in air)) fibers maintained sound fibrous morphology without any organic impurities. They could maintain such fibrous morphologies during the dehydration and debinding steps because of the relatively low internal pressures of water vapor and polymer, respectively. In addition, the NdFeO3 alloying phase was dominant in the multistep heat-treated fibers due to the removal of barriers to mass transfer in the interparticles.

20

Morphological, chemical and structural characterization of silica-containing polyvinylpyrrolidone electrospun nanofibers prepared by sol-gel technique

Tański T., Matysiak W., Zaborowska M., Łukowiec D., Krzesiński M.

Journal of Achievements in Materials and Manufacturing Engineering

|

2016

|

Vol. 79, nr 1

5--12

EN

Purpose: The aim of this study was to produce poly(vinylpyrrolidone) (PVP) containing silica nanofibers using electrospinning method from 10% PVP/EtOH solutions with different mass concentration 0 and 30% of tetraethoxysilane. Sol-gel technique was used to obtain nanofiber membranes with high amount of inorganic phase. In the case when metal alkoxide, such as tetraethyl orthosilicate (TEOS) is mixed with an organic polymer, hydrolysis and condensation reaction of TEOS occur in-situ with polymer matrix, which allows to fabricate organic-inorganic hybrid structures with uniform dispersion. Design/methodology/approach: The examination of the morphology of the obtained PVP/silicon dioxide nanofibers using scanning electron microscope (SEM) has been made. The chemical structure of produced nanostructures was investigated by Fourier - Transform Infrared spectroscopy (FTIR) and Energy Dispersive Spectrometry (EDX) to analyze the regular dispersion by examining types of bonds occurring between polymer matrix and SiO2 phase. Findings: Results obtained in this paper shows that the mass concentration of the reinforcing phase in form of TEOS have an influence on the average diameter of nanofibers and with the increase of tetraethyl orthosilicate in solution nanofibers diameters decrease. Moreover, structural examination shows uniform dispersion of the reinforcing phase in hybrid materials. Research limitations/implications: Uniform dispersion of the reinforcing phase in silica-containing PVP nanofibers gives the opportunity to make nanowires in calcination process from such obtained fibrous mats and use in novel electrical devices. Originality/value: This paper describes an easy and more effective way of making polymer nanofibers with the content of silicon dioxide with the perspective way of making silica nanowires in the future from obtained hybrid nanofibers, so that this method can replace commonly used nanowires growth processes.