Готові списки джерел за темами / Electrospun fibrous

Добірка наукової літератури з теми "Electrospun fibrous"

Автор: Grafiati
Опубліковано: 6 вересня 2023

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Статті в журналах з теми "Electrospun fibrous"

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Ritcharoen, Watadta, Yaowaporn Thaiying, Yupa Saejeng, Ittipol Jangchud, Ratthapol Rangkupan, Chidchanok Meechaisue, and Pitt Supaphol. "Electrospun dextran fibrous membranes." Cellulose 15, no. 3 (February 5, 2008): 435–44. http://dx.doi.org/10.1007/s10570-008-9199-3.

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Fang, Jun, Jing Wang, Tong Wu, Anlin Yin, and Xiumei Mo. "Electrospun macroporous fibrous scaffolds." Journal of Controlled Release 213 (September 2015): e60-e61. http://dx.doi.org/10.1016/j.jconrel.2015.05.100.

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Koh, C. T., and M. L. Oyen. "Toughening in electrospun fibrous scaffolds." APL Materials 3, no. 1 (January 2015): 014908. http://dx.doi.org/10.1063/1.4901450.

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Li, Xiuhong, Yujie Peng, Youqi He, Chupeng Zhang, Daode Zhang, and Yong Liu. "Research Progress on Sound Absorption of Electrospun Fibrous Composite Materials." Nanomaterials 12, no. 7 (March 29, 2022): 1123. http://dx.doi.org/10.3390/nano12071123.

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Noise is considered severe environmental pollutant that affects human health. Using sound absorption materials to reduce noise is a way to decrease the hazards of noise pollution. Micro/nanofibers have advantages in sound absorption due to their properties such as small diameter, large specific surface area, and high porosity. Electrospinning is a technology for producing micro/nanofibers, and this technology has attracted interest in the field of sound absorption. To broaden the applications of electrospun micro/nanofibers in acoustics, the present study of electrospun micro/nano fibrous materials for sound absorption is summarized. First, the factors affecting the micro/nanofibers’ sound absorption properties in the process of electrospinning are presented. Through changing the materials, process parameters, and duration of electrospinning, the properties, morphologies, and thicknesses of electrospun micro/nanofibers can be controlled. Hence, the sound absorption characteristics of electrospun micro/nanofibers will be affected. Second, the studies on porous sound absorbers, combined with electrospun micro/nanofibers, are introduced. Then, the studies of electrospun micro/nanofibers in resonant sound absorption are concluded. Finally, the shortcomings of electrospun micro/nano fibrous sound absorption materials are discussed, and the future research is forecasted.
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Youn, Doo-Hyeb, Kyu-Sung Lee, Sun-Kyu Jung, and Mangu Kang. "Fabrication of a Simultaneous Highly Transparent and Highly Hydrophobic Fibrous Films." Applied Sciences 11, no. 12 (June 16, 2021): 5565. http://dx.doi.org/10.3390/app11125565.

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This paper discusses the fabrication and characterization of electrospun nanofiber scaffolds made of polystyrene (PS). The scaffolds were characterized in terms of their basis material molecular weight, fiber diameter distribution, contact angles, contact angle hysteresis, and transmittance. We propose an aligned electrospun fiber scaffold using an alignment tool (alignment jig) for the fabrication of highly hydrophobic (θW > 125°) and highly transparent (T > 80.0%) films. We fabricated the alignment jig to align the electrospun fibers parallel to each other. The correlation between the water contact angles and surface roughness of the aligned electrospun fibers was investigated. We found that the water contact angle increased as the surface roughness was increased. Therefore, the hydrophobic properties of the aligned electrospun fibers were enhanced by increasing the surface roughness. With the change in the electrospinning mode to produce aligned fibers rather than randomly distributed fibers, the transmittance of the aligned electrospun fibers increased. The increase in the porous area, leading to better light transmittance in comparison to randomly distributed light scattering through the aligned electrospun fibers increased with the fibers. Through the above investigation of electrospinning parameters, we obtained the simultaneous transparent (>80%) and hydrophobic (θW > 140°) electrospun fiber scaffold. The aligned electrospun fibers of PS had a maximum transmittance of 91.8% at the electrospinning time of 10 s. The water contact angle (WCA) of the aligned electrospun fibers increased from 77° to 141° as the deposition time increased from 10 s to 40 s. The aligned fibers deposited at 40 s showed highly hydrophobic characteristics (θW > 140°).
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Li, Yun Yu, Ling Jun Guo, Bin Wang, and Qiang Song. "Enhanced Mechanical Performance of Electrospun Graphene/Polyacrylonitrile (PAN) Composite Microfibrous Yarns via Post-Processing." Advanced Materials Research 941-944 (June 2014): 492–98. http://dx.doi.org/10.4028/www.scientific.net/amr.941-944.492.

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The graphene/Polyacrylonitrile (PAN) composites have drawn increased attention due to their significant improvements in mechanical and physical properties. A post treatment, enhancing the mechanical properties of the electrospun graphene/PAN fibrous yarns, was investigated in this study. The yarns obtained by this post treatment showed increased average strength and decreased elongation, which demonstrated that the as-reported method was an effective way to prepare higher performance electrospun graphene/PAN yarns. The method has potential application in preparation of micro ropes and self-assembled 3D electrospun fibrous yarns. Moreover, it is an innovation to apply dyeing during the investigation of the electrospun fibers under tension condition to analyze the tensile mechanism of yarns. The annular cracks were observed, which was recognized as the immediate cause for the yarns lengthening. Furthermore, according to its growth and fracture, the tensile mechanism of electrospun fibrous yarns was revealed.
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Liang, Yin Zheng, Si Chen Cheng, Jian Meng Zhao, Chang Huan Zhang, and Yi Ping Qiu. "Preparation and Characterization of Electrospun PVDF/PMMA Composite Fibrous Membranes-Based Separator for Lithium-Ion Batteries." Advanced Materials Research 750-752 (August 2013): 1914–18. http://dx.doi.org/10.4028/www.scientific.net/amr.750-752.1914.

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The poly (vinylidene fluoride)/poly (methyl methacrylate)(PVDF/PMMA) composite fibrous membranes with different blend ratio for use as separator of lithium-ion batteries have been developed by electrospinning technique. The surface morphology and crystal structure of electrospun PVDF/PMMA composite fibrous membranes are characterized using scanning electron microscopy (SEM), attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy and differential scanning calorimetry (DSC).The results indicated that the addition of PMMA into PVDF increased the fiber diameter, decreased the crystalline of electrospun composite fibrous membranes and the good molecular level interaction between these two polymers were obtained. Meanwhile,electrospun PVDF/PMMA (90/10) composite fibrous membranes exhibited the highest ionic conductivity of 2.54×10-3S/cm at room temperature with electrochemical stability of up to 5.0V.
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Sazhnev, N. A., N. R. Kil’deeva, M. G. Drozdova, and E. A. Markvicheva. "Fibrous Scaffolds for Tissue Engineering Electrospun from Fibroin-Containing Solutions." Fibre Chemistry 53, no. 6 (March 2022): 370–72. http://dx.doi.org/10.1007/s10692-022-10303-8.

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Lu, Hai, Wei-Jun Chen, Yan Xing, Da-Jun Ying, and Bo Jiang. "Design and Preparation of an Electrospun Biomaterial Surgical Patch." Journal of Bioactive and Compatible Polymers 24, no. 1_suppl (May 2009): 158–68. http://dx.doi.org/10.1177/0883911509103559.

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A biomaterial patch of electrospun collagen type fibers was designed and produced by electrospinning seven different concentrations (8%-20% w/v) of collagen solutions. The tensile strength, yield strength, and elastic modulus of the electrospun collagen fibrous patches were found to be suitable for clinical transplantation. No significant differences versus fresh porcine pericardium as controls were observed. The SEM images of the groups showed that the patches were smooth with uniform interwoven and porous morphology. The fibrous patches were biocompatible and did not elicit local or systemic toxic effects when implanted in vivo. These electrospun collagen fibrous patches have significant potential as surgical biomaterial patches.
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Chen, Shu-Ting, S. Ranil Wickramasinghe, and Xianghong Qian. "Electrospun Weak Anion-Exchange Fibrous Membranes for Protein Purification." Membranes 10, no. 3 (March 1, 2020): 39. http://dx.doi.org/10.3390/membranes10030039.

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Membrane based ion-exchange (IEX) and hydrophobic interaction chromatography (HIC) for protein purification is often used to remove impurities and aggregates operated under the flow-through mode. IEX and HIC are also limited by capacity and recovery when operated under bind-and-elute mode for the fractionation of proteins. Electrospun nanofibrous membrane is characterized by its high surface area to volume ratio and high permeability. Here tertiary amine ligands are grafted onto the electrospun polysulfone (PSf) and polyacrylonitrile (PAN) membrane substrates using UV-initiated polymerization. Static and dynamic binding capacities for model protein bovine serum albumin (BSA) were determined under appropriate bind and elute buffer conditions. Static and dynamic binding capacities in the order of ~100 mg/mL were obtained for the functionalized electrospun PAN membranes whereas these values reached ~200 mg/mL for the functionalized electrospun PSf membranes. Protein recovery of over 96% was obtained for PAN-based membranes. However, it is only 56% for PSf-based membranes. Our work indicates that surface modification of electrospun membranes by grafting polymeric ligands can enhance protein adsorption due to increased surface area-to-volume ratio.
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Дисертації з теми "Electrospun fibrous"

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Hassanpouryousefi, Sina. "Modeling Electrospun Fibrous Materials." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/6109.

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Electrospinning has been the focus of countless studies for the past decades for applications, including but not limited to, filtration, tissue engineering, and catalysis. Electrospinning is a one-step process for producing nano- and/or micro-fibrous materials with diameters ranging typically from 50 to 5000 nm. The simulation algorithm presented here is based on a novel mass-spring-damper (MSD) approach devised to incorporate the mechanical properties of the fibers in predicting the formation and morphology of the electrospun fibers as they travel from the needle toward the collector, and as they deposit on the substrate. This work is the first to develop a physics-based (in contrast to the previously-developed geometry-based) computational model to generate 3-D virtual geometries that realistically resemble the microstructure of an electrospun fibrous material with embedded particles, and to report on the filtration performance of the resulting composite media. In addition, this work presents a detailed analysis on the effects of electrospinning conditions on the microstructural properties (i.e. fiber diameter, thickness, and porosity) of polystyrene and polycaprolactone fibrous materials. For instance, it was observed that porosity of a PS electrospun material increases with increasing the needle-to-collector distance, or reducing the concentration of PS solution. The computational tool developed in this work allows one to study the effects of electrospinning parameters such as voltage, needle-to-collector distance (NCD), or polymer concentration, on thickness and porosity of the resulting fibrous materials. Using our MSD formulations, a new approach is also developed to model formation and growth of dust-cakes comprised of non-overlapping non-spherical particles, for the first time. This new simulation approach can be used to study the morphology of a dust-cake and how it impacts, for instance, the filtration efficiency of a dust-loaded filter, among many other applications.
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Tsai, Chen-Chih. "Electrospun fibrous materials wetting properties /." Connect to this title online, 2009. http://etd.lib.clemson.edu/documents/1263409825/.

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Veleirinho, Maria Beatriz da Rocha. "Electrospun fibrous mats for skin and abdominal wall repair." Doctoral thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/9331.

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Doutoramento em Química
Esta tese centra-se no desenvolvimento de materiais biodegradáveis e nãodegradáveis produzidos por eletrofiação com aplicação na área biomédica. O poli(3-hidroxibutirato-co-3-hidroxivalerato) (PHBV), um poliéster biodegradável, foi selecionado como base dos materiais biodegradáveis, enquanto o poli(tereftalato de etileno) (PET), um polímero sintético, estável e biocompatível, foi selecionado para a produção das matrizes não degradáveis. Adicionou-se quitosana aos sistemas com o objetivo de melhorar o processo de eletrofiação e as propriedades morfológicas, físico-químicas e biológicas dos materiais resultantes. A composição química, bem como as características morfológicas e físicoquímicas dos materiais em estudo, foram manipuladas de modo a otimizar a sua performance como suportes celulares para engenharia de tecidos. Foram realizados estudos in vitro com cultura de fibroblastos L929 para avaliar o comportamento das células, i.e. viabilidade, adesão, proliferação e morte, quando cultivadas nas matrizes produzidas por eletrofiação. Adicionalmente foram realizados ensaios in vivo para investigar o potencial dos materiais em estudo na regeneração cutânea e como tela abdominal. Os principais resultados encontrados incluem: o desenvolvimento de novas matrizes híbridas (PHBV/quitosana) adequadas ao crescimento de fibroblastos e ao tratamento de lesões de pele; o desenvolvimento de um sistema de eletrofiação com duas seringas para a incorporação de compostos bioativos; diversas estratégias para manipulação das características morfológicas dos materiais de PHBV/quitosana e PET/quitosana produzidos por eletrofiação; uma melhoria do conhecimento das interações fibroblastos-suporte polimérico; a verificação de uma resposta inflamatória desencadeada pelos materiais nãodegradáveis quando utilizados no tratamento de defeitos da parede abdominal, o que sugere a necessidade de novos estudos para avaliar a segurança do uso de biomateriais produzidos por eletrofiação.
This thesis focuses on the development of biodegradable and non-degradable electrospun materials with application in the biomedical field. Poly(3- hydroxybutyrate-co-3-hydroxyvalerate) (PHBV), a natural biodegradable polyester, was selected as the basis of the biodegradable materials while polyethylene terephthalate (PET), a biocompatible stable synthetic polyester, was selected for the production of the non-degradable ones. Chitosan was added to both systems in order to enhance electrospinnability as well as morphological, physico-chemical, and biological features of the biomaterials. The chemical composition, morphological and some physico-chemical characteristics of these materials were manipulated toward an optimized biological performance as scaffolds for tissue engineering. In vitro cell culture studies were performed with L929 fibroblasts in order to study the cell behavior, i.e. viability, adhesion, proliferation and death, when cultured on the electrospun materials. Furthermore, in vivo assays were conducted in order to investigate the potential of the materials under study for skin and abdominal wall repair. The main achievements of this thesis include: the development of new PHBV/chitosan hybrid mats suitable for fibroblasts growth and with a good performance when used as a scaffold for skin repair; the development of a dual syringe electrospinning system for incorporation of bioactive compounds; several strategies to manipulate the morphological characteristics of electrospun materials of both PHBV/chitosan and PET/chitosan blends; an improvement of the knowledge of cell-scaffolds interactions; the detection of an important inflammatory response elicited by the non-degradable electrospun materials when used as prosthetic meshes for abdominal defect repair, suggesting the need of further studies on the safety of nanosized electrospun biomaterials.
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Zhang, Xing. "Electrospun tri-layer micro/nano-fibrous scaffold for vascular tissue engineering." Birmingham, Ala. : University of Alabama at Birmingham, 2008. https://www.mhsl.uab.edu/dt/2010r/zhang.pdf.

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Wang, Xiaokun. "Fabrication of electrospun fibrous meshes and 3D porous titanium scaffolds for tissue engineering." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/51724.

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Tissue engineering is a multidisciplinary field that is rapidly emerging as a promising approach for tissue repair and regeneration. In this approach, scaffolds which allow cells to invade the construct and guide the cells grow into specific tissue play a pivotal role. Electrospinning has gained popularity recently as a simple and versatile method to produce fibrous structures with nano- to microscale dimensions. These electrospun fibers have been extensively applied to create nanofiber scaffolds for tissue engineering applications. Specifically for bone and cartilage tissue engineering, polymeric materials have some attractive properties such as the biodegradability. Ceramic scaffolds and implant coatings, such as hydroxyapatite and silica-based bioglass have also been considered as bone graft substitutes for bone repair because of their bioactivity and, in some cases, tunable resorbability. Besides tissue engineering scaffolds, for clinical application, especially for load-bearing artificial implants, metallic materials such as titanium are the most commonly used material. Osseointegration between bone and implants is very essential for implant success. To achieve better osseointegration between bone and the implant surface, three dimensional porous structures can provide enhanced fixation with bone by allowing tissue to grow into the pores. In this study, pre-3D electrospun polymer and ceramic scaffolds with peptide conjugation and 3D titanium scaffolds with different surface morphology were fabricated to testify the osteoblast and mensechymal stem cell attachment and differentiation. The overall goal of this thesis is to determine if the peptide functionalization of polymeric scaffolds and physical parameters of ceramic and metallic scaffold can promote osteoblast maturation and mesenchymal stem cell differentiation in vitro to achieve an optimal scaffold design for greater osseointegration. The results of the studies showed with functionalization of MSC- specific peptide, polymer scaffolds behaved with higher biocompatibility and MSC affinity. For the ceramic and metallic scaffolds, microstructures and nanostructures can synergistically promote osteoblast maturation and 3D micro-environment with micro-roughness is a promising design for osteoblast maturation and MSC differentiation in vitro compared to 2D surfaces.
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Liu, Li [Verfasser], and Seema [Akademischer Betreuer] Agarwal. "Investigation of electrospun nano-fibrous polymeric actuators： Fabrication and Properties / Li Liu ; Betreuer: Seema Agarwal." Bayreuth : Universität Bayreuth, 2018. http://d-nb.info/1164077163/34.

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Kang, Jiachen, and 康家晨. "Formation and evaluation of electrospun bicomponent fibrous scaffolds for tissue engineering and drug delivery applications." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B45705525.

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Vacanti, Nathaniel (Nathaniel Martin). "Investigation of electrospun fibrous scaffolds, locally delivered anti-inflammatory drugs, and neural stem cells for promoting nerve regeneration." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/59884.

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Анотація:
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 79-82).
The organization and intricacy of the central and peripheral nervous systems pose special criteria for the selection of a suitable scaffold to aid in regeneration. The scaffold must have sufficient mechanical strength while providing an intricate network of passageways for axons, Schwann cells, oligodendrocytes, and other neuroglia to populate. If neural regeneration is to occur, these intricate passageways must not be impeded by macrophages, neutrophils, or other inflammatory cells. Therefore it is imperative that the scaffold does not illicit a severe immune response. Biodegradable electrospun fibers are an appealing material for tissue engineering scaffolds, as they strongly resemble the morphology of extracellular matrix. In this study, electrospun fibers composed of poly(L-lactic acid) (PLLA) and polycaprolactone (PCL) were prepared with and without the steroid anti-inflammatory drug, dexamethasone, encapsulated. Histological analysis of harvested subcutaneous implants demonstrated the PLLA fibers encapsulating dexamethasone (PLLA/dex fibers) evoked a much less severe immune response than any other fiber. These findings were supported by in vitro drug release data showing a controlled release of dexamethasone from the PLLA/dex fibers and a burst release from the PCL/dex fibers. The ability of the PLLA/dex fibers to evade an immune response provides a very powerful tool for fabricating tissue engineering scaffolds, especially when the stringent demands of a neural tissue engineering scaffold are considered. Structural support and contact guidance are crucial for promoting peripheral nerve regeneration. A method to fabricate peripheral nerve guide conduits with luminal, axially aligned, electrospun fibers is described and implemented in this study. The method includes the functionalization of the fibers with the axonal outgrowth promoting protein, laminin, to further enhance regeneration. The implantation of stem cells at the. site of a spinal cord or peripheral nerve lesion has been shown to promote nerve regeneration. Preliminary work to isolate and culture pluripotent, adult neural stem cells for seeding on the above mentioned scaffold is also described here.
by Nathaniel Vacanti.
S.M.
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Yeoh, Sang Ju. "Electrospun cellulose fibres from kraft pulp." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/12930.

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Cellulose, the most abundant biomass extractable from wood, was generated in fibre form from kraft pulp by electrospinning, a fibre-producing process using electrostatic forces. Kraft pulping is the most dominant pulping technique in North America. Kraft pulp fibres (diam. 30μm) have a tensile strength of 700MPa and elastic modulus of 20GPa. In comparison, individual cellulose nanofibrils (diam. 5nm) have a tensile strength of 10GPa and elastic modulus of 150GPa. The strength displayed by cellulose nanofibrils suggests that the smaller fibre diameter could lead to a lower probability of including smaller flaw sizes in the fibre. Electrospinning has been successfully demonstrated as a one-step process to produce cellulose fibres directly from kraft pulp, thereby showing great potential for reducing cost and making the fibre-producing process more environmental friendly. Based on SEM and XRD, the electrospun fibres have a fibrillation-free, nano-filament structure with a seemingly cellulose I crystal structure, indicating significant potential for making crystalline cellulose fibres directly from kraft pulp. Contact angle measurements show that the electrospun fibres appear more hydrophobic than kraft pulp. The mechanical properties of the electrospun fibres have a large variation, suggesting the need for further process optimization. The ability to produce cellulose fibres directly from kraft pulp with improved moisture resistance and mechanical properties could potentially result in the development of more high value-added products for the Canadian pulp and paper industry, and perhaps even globally.
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Wang, Wei. "Thermo-mechanical properties of electrospun polymer fibres." Thesis, Queen Mary, University of London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.509670.

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Книги з теми "Electrospun fibrous"

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Inamuddin, Rajender Boddula, Abdullah M. Asiri, and Mohd Imran Ahamed. Electrospun Materials and Their Allied Applications. Wiley & Sons, Incorporated, John, 2020.

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Inamuddin, Rajender Boddula, Abdullah M. Asiri, and Mohd Imran Ahamed. Electrospun Materials and Their Allied Applications. Wiley & Sons, Incorporated, John, 2020.

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3

Ramakrishna, Seeram, Yu Dong, and Avinash Baji. Electrospun Polymers and Composites: Ultrafine Materials, High Performance Fibres and Wearables. Elsevier Science & Technology, 2020.

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Ramakrishna, Seeram, Yu Dong, and Avinash Baji. Electrospun Polymers and Composites: Ultrafine Materials, High Performance Fibres and Wearables. Elsevier Science & Technology, 2020.

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5

Uyar, Tamer, and Erich Kny. Electrospun Materials for Tissue Engineering and Biomedical Applications: Research, Design and Commercialization. Elsevier Science & Technology, 2017.

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Частини книг з теми "Electrospun fibrous"

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Gostick, Jeff, Matthew Kok, and Rhodri Jervis. "Electrospun Fibrous Mats." In Album of Porous Media, 11. Cham: Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-23800-0_2.

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Xu, Helan, and Yiqi Yang. "3D Electrospun Fibrous Structures from Biopolymers." In ACS Symposium Series, 103–26. Washington, DC: American Chemical Society, 2014. http://dx.doi.org/10.1021/bk-2014-1175.ch007.

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Li, Guo, Changyue Xue, Sirong Shi, Shu Zhang, and Yunfeng Lin. "Electrospun Fibrous Scaffolds for Cartilage Tissue Regeneration." In Stem Cell Biology and Regenerative Medicine, 59–75. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-51617-2_4.

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Chen, Shuiliang, Wan Ye, and Haoqing Hou. "Electrospun Fibrous Membranes as Separators of Lithium-Ion Batteries." In Nanostructure Science and Technology, 91–110. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-54160-5_4.

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Jishnu, N. S., Neethu T. M. Balakrishnan, Akhila Das, Jou-Hyeon Ahn, M. J. Jabeen Fatima, and Raghavan Prasanth. "Electrospun Fibrous Vanadium Pentoxide Cathodes for Lithium-Ion Batteries." In Electrospinning for Advanced Energy Storage Applications, 499–537. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8844-0_18.

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Krishnan, M. A., Neethu T. M. Balakrishnan, Akhila Das, Leya Rose Raphael, M. J. Jabeen Fatima, and Raghavan Prasanth. "Electrospun-Based Nonwoven 3D Fibrous Composite Polymer Electrolytes for High-Performance Lithium-Ion Batteries." In Electrospinning for Advanced Energy Storage Applications, 153–78. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8844-0_6.

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Cui, X. A., X. Liu, D. L. Kong, and H. Q. Gu. "Preparation and Characteration of Electrospun Collagen/Silk Fibroin Complex Microfibers." In IFMBE Proceedings, 79–82. Berlin, Heidelberg: Springer Berlin Heidelberg, 2013. http://dx.doi.org/10.1007/978-3-642-29305-4_22.

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Andiappan, Muthumanickkam, and Subramanian Sundaramoorthy. "Studies on Indian Eri Silk Electrospun Fibroin Scaffold for Biomedical Applications." In Biomedical Applications of Natural Proteins, 51–64. New Delhi: Springer India, 2015. http://dx.doi.org/10.1007/978-81-322-2491-4_4.

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Jeong, Lim, Kuen Yong Lee, and Won Ho Park. "Effect of Solvent on the Characteristics of Electrospun Regenerated Silk Fibroin Nanofibers." In Advanced Biomaterials VII, 813–16. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-436-7.813.

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Zhou, Feng-Lei, Penny L. Hubbard Cristinacce, Stephen J. Eichhorn, and Geoff J. M. Parker. "Co-electrospun Brain Mimetic Hollow Microfibres Fibres for Diffusion Magnetic Resonance Imaging." In Electrospinning for High Performance Sensors, 289–304. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-14406-1_12.

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Тези доповідей конференцій з теми "Electrospun fibrous"

1

Yan, Karen Chang, Michael Rossini, Michael Sebok, and John Sperduto. "Concentration Characterization of Encapsulated Macromolecules in Electrospun Alginate Fibers Using Image Analysis." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-52585.

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Анотація:
Electrospun fibers made of biocompatible polymers have been used as scaffolds in tissue engineering to mimic the fibrous environment found in the extracellular matrix (ECM) of biological tissue; and bioactive macromolecules can also be encapsulated in the electrospun fibers. In order to control the release of these encapsulated macromolecules, it is of great interest to understand how the release rate is affected by the sizes of molecules, cross-linking as well as electrospinning configuration (single axial versus co-axial). Fluorescein imaging technique has been applied in quantifying molecular transport phenomena. This paper presents an image analysis method to establish a baseline correlation between the fluorescent intensity and the macromolecule concentration in the electrospun fibers. In this study, alginate and Poly(ethylene oxide) (PEO) blend polymer aqueous solution (1:1 ratio, 3% w/v) was used to electrospin fibers and fluorescein-isothiocyanate dextran (FITC-dextran) with different molecular weights was chosen as the encapsulated macromolecule. Linear correlation was established based on the statistical analysis of electrospun fiber images, and imaging parameters effects were also identified.
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Fee, Timothy J., and Joel L. Berry. "Mechanics of Electrospun Polycaprolactone Nanofibers." In ASME 2012 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/sbc2012-80297.

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Electrospun biomaterials are gaining popularity as scaffolding for engineered tissues. This fibrous scaffolding of natural or synthetic polymers can mimic properties of the natural extra-cellular matrix. Moreover, undifferentiated cells seeded onto and within an electrospun matrix may be directed to differentiate into a desired tissue type through the application of the appropriate biochemical and mechanical conditions. It is becoming clear that the mechanical deformation of any electrospun matrix plays an important role in cell signaling. However, electrospun biomaterials have inherently complex geometries due to the random deposition of fibers during the electrospinning process. Even “aligned” electrospun matrices generate off-axis forces under load. This complex fiber geometry complicates any attempt at quantifying forces exerted on adherent cells during electrospun matrix deformation.
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Vinoth, S., Kamatam Hariprasad, G. Kanimozhi, and N. Satyanarayana. "Electrospun nanocomposite polymer fibrous membrane electrolyte for DSSC application." In ADVANCED MATERIALS: Proceedings of the International Workshop on Advanced Materials (IWAM-2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5050765.

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4

Leung, Linus H., Elmira Khatounabad, and Hani E. Naguib. "Novel Fabrication Technique for 3-Dimensional Electrospun Poly(DL-Lactide-Co-Glycolide) Acid Scaffolds." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39027.

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Current tissue engineering scaffolds created by electrospinning techniques are mostly limited to a 2D membrane. In this study, a novel method to fabricate 3D fibrous scaffolds is presented, and a parametric study to identify the optimal processing parameters was performed. The fabrication technique uses a batch foaming setup to saturate the fibrous scaffolds with CO2 to lower the glass transition temperature of PLGA to allow for the sintering of the fibers. When a mechanical pressure was applied to multiple layers of the thin films in the presence of gas, the layers of PLGA scaffolds sinter to form a thick 3D fibrous structure. This study was divided into three parts. First, the effect of gas saturation on the scaffolds was examined. Three saturation pressures of 200, 300, and 400 psi and multiple saturation times of 1, 3, 5, 30, 60, and 120 minutes were used. At the lowest pressure of 200 psi, the morphology and mechanical properties of the scaffolds were not affected. As saturation pressure and time were increased, the fibers sintered, and eventually the fibrous structure was lost because the polymer was over-sintered. The second part of the study was to determine the adhesion properties of the scaffolds using gas pressure. The same processing pressures and times were used for this set of experiments, and a higher pressure was found to better adhere the layers of PLGA films together. From the first two parts of this study, the optimal combination of processing parameters was determined to be saturating the samples under 400 psi of pressure for three minutes. This set of parameters was then used in the third part of the study to fabricate 3D fibrous scaffolds. The demonstration of this ability to fabricate 3D scaffolds improves on current electrospinning techniques while maintaining a desirable fibrous structure for tissue engineering.
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Mak, Eva Yi-Wah, and Wallace Woon-Fong Leung. "Novel Nanofibrous Scaffold to Improve Wound Healing." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-64223.

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An antibacterial and biocompatible scaffold for fibroblasts proliferation based on chitosan has been developed. Chitosan solution is electrospun into uniform fibers of 100–200 nm in diameter that mimic the extracellular matrix of human skin. The fibrous mats are successfully cross-linked to be stable in acidic solution, which can be used to treat acute wounds. The crosslinked fibrous mats display antibacterial properties toward Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli. The mechanical properties of fibrous mats are shown to be comparable to native skin dermis which protects the skin wound.
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Kim, K., J. Choi, J. Kim, H. Yang, and F. Ko. "The magnetic thermo-sensitive magnetite nanoparticles filled in electrospun fibrous." In 2015 IEEE International Magnetics Conference (INTERMAG). IEEE, 2015. http://dx.doi.org/10.1109/intmag.2015.7156743.

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Padmaraj, O., B. Nageswara Rao, Paramananda Jena, M. Venkateswarlu, and N. Satyanarayana. "Electrospun nanocomposite fibrous polymer electrolyte for secondary lithium battery applications." In SOLID STATE PHYSICS: Proceedings of the 58th DAE Solid State Physics Symposium 2013. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4873090.

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Kang, Jia-Chen, Min Wang, and Xiao-Yan Yuan. "Bicomponent Fibrous Scaffolds of Controlled Composition for Tissue Engineering Applications." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-10989.

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Анотація:
Electrospinning has been widely studied for constructing tissue engineering scaffolds because of the morphological and size effects of electrospun fibers on cell behavior. Research on electrospun tissue engineering scaffolds has been based mainly on using solutions of single polymer or blends of polymers dissolved in common solvents, which has put limitations to scaffolds that can be built. There is an increasing need for using the multi-source and multi-power electrospinning approach to fabricate multicomponent fibrous scaffolds because these scaffolds have great potential for tissue engineering and controlled (drug) release applications. In the present study, bicomponent fibrous scaffolds were fabricated through dual-source and dual-power electrospinning using poly(L-lactic acid) (PLLA) and gelatin polymers. The experimental setup ensured that the solution and electrospinning parameters for each electrospun fibrous component were controlled separately and hence the morphology of electrospun fibers could be controlled and optimized. By adjusting the number of syringes that fed polymer solutions, the composition of bicomponent scaffolds (i.e. the weight percentage of gelatin varying from 0 to 100%) could also be controlled. Such controls would yield scaffolds of desired properties (hydrophilicity, degradation rate, strength, etc.) After electrospinning, pure gelatin scaffolds and bicomponent scaffolds were crosslinked by glutaraldehyde (GA) and genipin, respectively, using different crosslinking methods. Both crosslinked and non-crosslinked scaffolds were studied using various techniques (scanning electron microscopy (SEM) for scaffold morphology, differential scanning calorimetry (DSC) for polymer crystallinity, contact angle measurement for hydrophilicity, tensile testing for mechanical properties and crosslinking efficiency, etc.). It was found that the bicomponent scaffolds were more hydrophilic than pure PLLA scaffolds due to the presence of gelatin fibers. The tensile strength of bicomponent scaffolds was also increased after crosslinking. Using our experimental setup, bicomponent scaffolds could be constructed for tissue engineering with enhanced mechanical properties, biocompatibility and biodegradability. Furthermore, in the bicomponent scaffolds, while PLLA fibers could act as the structural component with a slower degradation rate, the gelatin fibers could be used as a carrier for therapeutic agents (drugs and therapeutic biomolecules). With controlled degrees of the crosslinking of gelatin, the release of therapeutic agents from gelatin fibers would be controlled.
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Driscoll, Tristan P., Nandan L. Nerurkar, Nathan T. Jacobs, Dawn M. Elliott, and Robert L. Mauck. "Fiber Angle and Aspect Ratio Influence the Shear Mechanics of Electrospun Nanofibrous Scaffolds." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53428.

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Fibrocartilages, including the meniscus of the knee and annulus fibrosus (AF) of the intervertebral disc, are dense connective tissues with an organized collagenous structure that play critical roles in motion and load transmission across joints. Proper mechanical function of these tissues is dependent on their structure and composition, both of which are compromised with degeneration. Tissue engineering strategies present a promising alternative to current treatments. Aligned electrospun scaffolds show promise for tissue engineering of fibrous soft tissues due to their ability to direct cell alignment and matrix deposition [1]. Furthermore, this matrix deposition results in constructs with near-native tensile properties. However, the large multi-directional forces experienced by these tissues in vivo requires that engineered constructs resist considerable shear and compressive loads as well. Unfortunately, shear properties of electrospun scaffolds are not well established. Simple shear is an appealing testing configuration because the application of tensile prestrain allows for combined fiber stretch and shear as occurs in situ. However, due to possible strain field heterogeneity, proper analysis of strain distributions must be performed [2]. The objective of this study was to quantify the effects of fiber orientation and sample aspect ratio on the shear properties of aligned electrospun scaffolds.
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D’Amore, Antonio, John A. Stella, William R. Wagner, and Michael S. Sacks. "A Method to Extract the Complete Fiber Network Topology of Planar Fibrous Tissues and Scaffolds." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19166.

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Анотація:
Improving fabrication protocols and design strategies, investigating on how fibrous ECM and synthetic architectures affect cell morphology, metabolism and phenotypic expression, predicting mechanical behaviors, have increasingly become crucial goals in the understanding of native tissues and in the development of engineered tissue. In the present study, an image-based analysis approach that provides an automatic tool to fully characterize engineered tissue fiber network topology was developed. The following micro architectural features were detected: fiber angle distribution, fiber connectivity, fiber overlap spatial density, and fiber diameter. In order to demonstrate the potential of this approach Electrospun poly(ester urethane)urea (ES-PEUU) scaffolds were studied. Electrospun scaffolds were chosen for their recognized capability to recapitulate native soft tissue extra cellular matrix (ECM) morphology.
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