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Статті в журналах з теми "Electrospun fibrous"

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Автор: Grafiati

Опубліковано: 6 вересня 2023

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1

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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2

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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3

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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4

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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Анотація:

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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5

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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6

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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7

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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8

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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9

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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10

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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Анотація:

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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11

Dong, Xuan, Yuansheng Zheng, Binjie Xin, Lantian Lin, and Fuli Zhang. "Preparation and characterization of composite fibrous membranes for oil spill cleanup." Textile Research Journal 90, no. 3-4 (July 30, 2019): 313–22. http://dx.doi.org/10.1177/0040517519865042.

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In this study, polyacrylonitrile (PAN) electrospun fibrous membranes were manufactured and applied for oil spill cleanup. Two kinds of composite fibrous membranes composed of PAN electrospun fibrous membranes and polyethylene/polyethylene terephthalate (PE/PET) core-shell fiber nonwoven fabric were fabricated. The fibrous structure, mechanical properties and surface wettability for water and oil, as well as oil absorption capacities and dynamic oil retention of the membranes, were investigated in detail. The addition of nonwoven fabric significantly enhanced the tensile strength of the PAN fibrous membranes. The oil absorption mechanisms of different membranes were studied as well. The sandwich structure composite fibrous membranes exhibited excellent mechanical property and oil absorption capacity, making it a promising candidate for treatment of oily wastewater.

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12

Liu, Feng Xia, Yong Jia Liu, Hong Li Cai, Jia Shuang Luan, and Mei Zhang. "Preparation and Mechanical Properties of Zein/PVA Nanofibrous Membranes." Advanced Materials Research 466-467 (February 2012): 391–95. http://dx.doi.org/10.4028/www.scientific.net/amr.466-467.391.

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This paper describes the morphology and mechanical properties of novel electrospun zein based fibrous membranes. From the results, due to adding PVA, it was found that the electrospun fibers of zein can turn into a new strong membrane. The fibrous membranes were characterized by tensile testing, scanning electron microscopy(SEM) and differential scanning calorimetry(DSC). Effect of PVA was analyzed as one of the most significant factors affecting the mechanical characterization of fibrous membranes. The compatibility of zein/PVA nanofibrous were also analyzed by using DSC method.

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13

Yang, Yi, Xili Ding, Tongqiang Zou, Ge Peng, Haifeng Liu, and Yubo Fan. "Preparation and characterization of electrospun graphene/silk fibroin conductive fibrous scaffolds." RSC Advances 7, no. 13 (2017): 7954–63. http://dx.doi.org/10.1039/c6ra26807b.

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A conductive fibrous scaffold made of silk fibroin and graphene was developed using electrospinning technique. The 3% G/SF scaffolds showed improved electroactivity and mechanical properties. Moreover, they could support the cell growth in vitro.

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14

Andiyappan, Muthumanickam, Subramanian Sundaramoorthy, Prasanna Vidyasekar, Natarajan Tirupattur Srinivasan, and Rama Shanker Verma. "Characterization of electrospun fibrous scaffold produced from Indian eri silk fibroin." International Journal of Materials Research 104, no. 5 (May 10, 2013): 498–506. http://dx.doi.org/10.3139/146.110888.

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15

Agić, Ante. "Multiscale Modeling Electrospun Nanofiber Structures." Materials Science Forum 714 (March 2012): 33–40. http://dx.doi.org/10.4028/www.scientific.net/msf.714.33.

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The carbon nanotube (CNT) structure is a promising building block for future nanocomposite structures. Mechanical properties of the electrospun butadiene elastomer reinforced with CNT are analyzed by multiscale method. Effective properties of the fiber at microscale determined by homogenization procedure using modified shear-lag model, while on the macro scale effective properties for the point-bonded stochastic fibrous network determined by volume homogenization procedure using multilevel finite element. Random fibrous network was generated according experimentally determined stochastic quantificators. Influence of CNT reinforcement on elastic modulus of electrospun sheet on macroscopic level is determined.

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16

Genovese, Maria Erminia, Elena Colusso, Massimo Colombo, Alessandro Martucci, Athanassia Athanassiou, and Despina Fragouli. "Acidochromic fibrous polymer composites for rapid gas detection." Journal of Materials Chemistry A 5, no. 1 (2017): 339–48. http://dx.doi.org/10.1039/c6ta08793k.

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17

Sarioglu, Omer Faruk, Asli Celebioglu, Turgay Tekinay, and Tamer Uyar. "Evaluation of contact time and fiber morphology on bacterial immobilization for development of novel surfactant degrading nanofibrous webs." RSC Advances 5, no. 124 (2015): 102750–58. http://dx.doi.org/10.1039/c5ra20739h.

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Novel electrospun fibrous biocomposites were developed by immobilizing two different sodium dodecyl sulfate (SDS) biodegrading bacterial strains on electrospun non-porous cellulose acetate (nCA) and porous cellulose acetate (pCA) webs.

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18

Choi, Jungsu, Jinu Kim, Heejae Yang, Frank K. Ko, and Ki Hyeon Kim. "Thermo-sensitive Electrospun Fibrous Magnetic Composite Sheets." Journal of Magnetics 20, no. 3 (September 30, 2015): 215–20. http://dx.doi.org/10.4283/jmag.2015.20.3.215.

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19

Mijović, Budimir, Josip Jelić, Petra Brać, and Snježana Kirin. "Melt electrospun fibrous architectures with target geometries." IOP Conference Series: Materials Science and Engineering 1208, no. 1 (November 1, 2021): 012004. http://dx.doi.org/10.1088/1757-899x/1208/1/012004.

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Abstract In the melt electrospinning technique, the polymer melt is stretched under high voltage and the cooled to form microfibers structures with a fibre diameter in the tens of micrometres range, although some studies have reported values ranging from hundreds of nanometres to hundreds of micrometres. In this respect, this technique has significance in the biomedical field, where tissue engineering scaffolds with bimodal (nano and micro) fibrous structures are preferred in regard to cell adhesion, spreading and infiltration to final tissue reconstruction. This paper gives a review of recently reported melt electrospinning devices, especially those based on the direct writing principle, and of their comparison with the new melt Spraybase electrospinning device. The Spraybase device provides high precision melt jet deposition into 2D and 3D programmed architectures, with versatile translation speeds of the collector plate in the X-Y and the melt head in the Z direction. The melt spun fibrous architectures are designed depending on the types of tissue cells used in scaffold development.

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20

Juhasz, Akos Gyorgy, Kristof Molnar, Abdenacer Idrissi, and Angela Jedlovszky-Hajdu. "Salt induced fluffy structured electrospun fibrous matrix." Journal of Molecular Liquids 312 (August 2020): 113478. http://dx.doi.org/10.1016/j.molliq.2020.113478.

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21

Agudelo, Wilson, Yuliet Montoya, Alejandra Garcia-Garcia, Adriana Restrepo-Osorio, and John Bustamante. "Electrochemical and Electroconductive Behavior of Silk Fibroin Electrospun Membrane Coated with Gold or Silver Nanoparticles." Membranes 12, no. 11 (November 16, 2022): 1154. http://dx.doi.org/10.3390/membranes12111154.

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Анотація:

The surface modification of materials obtained from natural polymers, such as silk fibroin with metal nanoparticles that exhibit intrinsic electrical characteristics, allows the obtaining of biocomposite materials capable of favoring the propagation and conduction of electrical impulses, acting as communicating structures in electrically isolated areas. On that basis, this investigation determined the electrochemical and electroconductive behavior through electrochemical impedance spectroscopy of a silk fibroin electrospun membrane from silk fibrous waste functionalized with gold or silver nanoparticles synthetized by green chemical reduction methodologies. Based on the results obtained, we found that silk fibroin from silk fibrous waste (SFw) favored the formation of gold (AuNPs-SFw) and silver (AgNPs-SFw) nanoparticles, acting as a reducing agent and surfactant, forming a micellar structure around the individual nanoparticle. Moreover, different electrospinning conditions influenced the morphological properties of the fibers, in the presence or absence of beads and the amount of sample collected. Furthermore, treated SFw electrospun membranes, functionalized with AuNPs-SFw or AgNPS-SFw, allowed the conduction of electrical stimuli, acting as stimulators and modulators of electric current.

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22

Malmberg, Siret, Mati Arulepp, Krista Laanemets, Maike Käärik, Ann Laheäär, Elvira Tarasova, Viktoria Vassiljeva, Illia Krasnou, and Andres Krumme. "The Performance of Fibrous CDC Electrodes in Aqueous and Non-Aqueous Electrolytes." C 7, no. 2 (May 14, 2021): 46. http://dx.doi.org/10.3390/c7020046.

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The aim of this study was to investigate the electrochemical behaviour of aqueous electrolytes on thin-layer (20 µm) nanoporous carbide-derived carbon (CDC) composite fibrous directly electrospun electrodes without further carbonisation. There have been previously investigated fibrous electrodes, which are produced by applying different post-treatment processes, however this makes the production of fibrous electrodes more expensive, complex and time consuming. Furthermore, in the present study high specific capacitance was achieved with directly electrospun nanoporous CDC-based fibrous electrodes in different neutral aqueous electrolytes. The benefit of fibrous electrodes is the advanced mechanical properties compared to the existing commercial electrode technologies based on pressure-rolled or slurry-cast powder mix electrodes. Such improved mechanical properties are preferred in more demanding applications, such as in the space industry. Electrospinning technology also allows for larger electrode production capacities without increased production costs. In addition to the influence of aqueous electrolyte chemical composition, the salt concentration effects and cycle stability with respect to organic electrolytes are investigated. Cyclic voltammetry (CV) measurements on electrospun electrodes showed the highest capacitance for asymmetrical cells with an aqueous 1 M NaNO3-H2O electrolyte. High CV capacitance was correlated with constant current charge–discharge (CC) data, for which a specific capacitance of 191 F g−1 for the positively charged electrode and 311 F g−1 for the negatively charged electrode was achieved. The investigation of electrolyte salt concentration on fibrous electrodes revealed the typical capacitance dependence on ionic conductivity with a peak capacitance at medium concentration levels. The cycle-life measurements of selected two-electrode test cells with aqueous and non-aqueous electrolytes revealed good stability of the electrospun electrodes.

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23

Tofel, Pavel, Klára Částková, David Říha, Dinara Sobola, Nikola Papež, Jaroslav Kaštyl, Ştefan Ţălu, and Zdeněk Hadaš. "Triboelectric Response of Electrospun Stratified PVDF and PA Structures." Nanomaterials 12, no. 3 (January 22, 2022): 349. http://dx.doi.org/10.3390/nano12030349.

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Utilizing the triboelectric effect of the fibrous structure, a very low cost and straightforward sensor or an energy harvester can be obtained. A device of this kind can be flexible and, moreover, it can exhibit a better output performance than a device based on the piezoelectric effect. This study is concerned with comparing the properties of triboelectric devices prepared from polyvinylidene fluoride (PVDF) fibers, polyamide 6 (PA) fibers, and fibrous structures consisting of a combination of these two materials. Four types of fibrous structures were prepared, and then their potential for use in triboelectric devices was tested. Namely, individual fibrous mats of (i) PVDF and (ii) PA fibers, and their combination—(iii) PVDF and PA fibers intertwined together. Finally, the fourth kind was (iv), a stratified three-layer structure, where the middle layer from PVDF and PA intertwined fibers was covered by PVDF fibrous layer on one side and by PA fibrous layer on the opposite side. Dielectric properties were examined and the triboelectric response was investigated in a simple triboelectric nanogenerator (TENG) of individual or combined (i–iv) fibrous structures. The highest triboelectric output voltage was observed for the stratified three-layer structure (the structure of iv type) consisting of PVDF and PA individual and intertwined fibrous layers. This TENG generated 3.5 V at peak of amplitude at 6 Hz of excitation frequency and was most sensitive at the excitation signal. The second highest triboelectric response was observed for the individual PVDF fibrous mat, generating 2.8 V at peak at the same excitation frequency. The uniqueness of this work lies in the dielectric and triboelectric evaluation of the fibrous structures, where the materials PA and PVDF were electrospun simultaneously with two needles and thus created a fibrous composite. The structures showed a more effective triboelectric response compared to the fibrous structure electrospun by one needle.

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24

Cho, Sun Hee, Jeong In Kim, Cheol Sang Kim, Chan Hee Park, and In Gi Kim. "Harnessing the Topography of 3D Spongy-Like Electrospun Bundled Fibrous Scaffold via a Sharply Inclined Array Collector." Polymers 11, no. 9 (September 3, 2019): 1444. http://dx.doi.org/10.3390/polym11091444.

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Анотація:

To date, many researchers have studied a considerable number of three-dimensional (3D) cotton-like electrospun scaffolds for tissue engineering, including the generation of bone, cartilage, and skin tissue. Although numerous 3D electrospun fibrous matrixes have been successfully developed, additional research is needed to produce 3D patterned and sophisticated structures. The development of 3D fibrous matrixes with patterned and sophisticated structures (FM-PSS) capable of mimicking the extracellular matrix (ECM) is important for advancing tissue engineering. Because modulating nano to microscale features of the 3D fibrous scaffold to control the ambient microenvironment of target tissue cells can play a pivotal role in inducing tissue morphogenesis after transplantation in a living system. To achieve this objective, the 3D FM-PSSs were successfully generated by the electrospinning using a directional change of the sharply inclined array collector. The 3D FM-PSSs overcome the current limitations of conventional electrospun cotton-type 3D matrixes of random fibers.

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25

Salaris, Valentina, Daniel López, José Maria Kenny, and Laura Peponi. "Hydrolytic Degradation and Bioactivity of Electrospun PCL-Mg-NPs Fibrous Mats." Molecules 28, no. 3 (January 19, 2023): 1001. http://dx.doi.org/10.3390/molecules28031001.

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In this work, the in vitro degradation behavior of nanofibers was investigated in phosphate buffer solution (PBS) and simulated body fluid (SBF) to study their degradation behavior, as well as their bioactivity. The degradation was studied at different immersion times in order to evaluate how the presence of Mg-based nanoparticles can affect the degradation in terms of morphology, crystallinity, degradation rate and pH changes, and finally to evaluate the bioactivity of PCL-based electrospun nanofibers. We found that the degradation of the materials takes more than 3 months; however, the presence of nanoparticles seems to have an accelerating effect on the degradation of the electrospun nanofibers based on PCL. In fact, a reduction in diameter of almost 50% was observed with the highest content of both types of nanoparticles and an increase in crystallinity after 296 days of immersion in PBS. Moreover, the carbonyl index was calculated from an FTIR analysis, and a reduction of 20–30% was observed due to the degradation effect. Additionally, the bioactivity of PCL-based electrospun nanofibers was studied and the formation of crystals on the nanofibers surface was detected, except for neat electrospun PCL related to the formation of NaCl and apatites, depending on the amount and type of nanoparticles. The presence of apatites was confirmed by an XRD analysis and FT-IR analysis observing the characteristic peaks; furthermore, the EDX analysis demonstrated the formation of apatites than can be reconducted to the presence of HA when 20 wt% of nanoparticles is added to the PCL electrospun fibers.

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26

Kang, Min Sung, Seok Ho Yoon, and Hyoung Joon Jin. "Preparation of Electrospun Protein Nanofibers with Multiwalled Carbon Nanotubes." Key Engineering Materials 326-328 (December 2006): 1737–40. http://dx.doi.org/10.4028/www.scientific.net/kem.326-328.1737.

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A simple and mass producible method was developed to incorporate multiwalled carbon nanotubes (MWCNTs) into electrospun silk fibroin (Bombyx mori) nanofibers. The process consists of dispersing the acid-treated MWCNTs in an aqueous silk fibroin solution, and blending this solution with a water-soluble polymer, poly(ethylene oxide) (PEO), followed by electrospinning of the composite solution. The morphology and microstructure of the electrospun nanofibers were characterized using field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). The FESEM and TEM images show that the MWCNTs are embedded along the nanofibers. Aqueous-based electrospinning of silk/PEO/MWCNTs composites provides potentially useful options for the fabrication of biomaterial scaffolds, e.g. wound dressings, based on this unique fibrous protein.

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27

Wang, Wei, Jian Da Cao, and Ping Lan. "Swelling Behaviors and Water States of Fibrous Membranes Electrospun from PHBV-g-PVP." Advanced Materials Research 482-484 (February 2012): 1478–82. http://dx.doi.org/10.4028/www.scientific.net/amr.482-484.1478.

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Fibrous membranes with a fiber diameter between 320 and 460 nm were electrospun from poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-graft-poly(N-vinylpyrrolidone) (PHBV-g-PVP) and their specific water absorption behaviors were investigated for biomaterial purposes. Water swelling experiments indicate that all samples have a great capacity for water uptake, while a remarkable overshoot occurs for the membranes electrospun from PHBV-g-PVP other than those from PHBV. DSC characterization indicates that only non-freezable bound water and free water can be distinguished in all electrospun membranes.

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28

Nie, Kexin, Shanshan Han, Jianmin Yang, Qingqing Sun, Xiaofeng Wang, Xiaomeng Li, and Qian Li. "Enzyme-Crosslinked Electrospun Fibrous Gelatin Hydrogel for Potential Soft Tissue Engineering." Polymers 12, no. 9 (August 31, 2020): 1977. http://dx.doi.org/10.3390/polym12091977.

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Soft tissue engineering has been seeking ways to mimic the natural extracellular microenvironment that allows cells to migrate and proliferate to regenerate new tissue. Therefore, the reconstruction of soft tissue requires a scaffold possessing the extracellular matrix (ECM)-mimicking fibrous structure and elastic property, which affect the cell functions and tissue regeneration. Herein, an effective method for fabricating nanofibrous hydrogel for soft tissue engineering is demonstrated using gelatin–hydroxyphenylpropionic acid (Gel–HPA) by electrospinning and enzymatic crosslinking. Gel–HPA fibrous hydrogel was prepared by crosslinking the electrospun fibers in ethanol-water solution with an optimized concentration of horseradish peroxidase (HRP) and H2O2. The prepared fibrous hydrogel held the soft and elastic mechanical property of hydrogels and the three-dimensional (3D) fibrous structure of electrospun fibers. It was proven that the hydrogel scaffolds were biocompatible, improving the cellular adhesion, spreading, and proliferation. Moreover, the fibrous hydrogel showed rapid biodegradability and promoted angiogenesis in vivo. Overall, this study represents a novel biomimetic approach to generate Gel–HPA fibrous hydrogel scaffolds which have excellent potential in soft tissue regeneration applications.

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29

Deng, Xia, Gang He, Yun Mao Liao, Yong Yi Yao, Zhi Qing Chen, Gang Li, Yong Zhao, et al. "Development of Ultrafine Fibrous Hydroxyapatite/Polymer Scaffold by Electrospinning." Key Engineering Materials 336-338 (April 2007): 1703–6. http://dx.doi.org/10.4028/www.scientific.net/kem.336-338.1703.

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A three-dimensional biomimetic electrospun scaffold was prepared from a nanohydroxyapatite/ polymer blend in the present study. Viscosity of n-HA/PEA compound solution determined by PEA concentration and additives of n-HA was investigated while other parameters were fixed in the electrospinning process. The fiber diameter increased with the increasing viscosity of solution. 20wt% n-HA in the composite ultrafine fibrous scaffold was proved to be a preferable ratio. The n-HA/PEA scaffold was characterized by XRD, SEM and EDX. The fibrous electrospun scaffold, which is made up of ultrafine fibers with average diameter 400±50 nm and well-interconnected pores, was characterized with high surface–to-volume ratio, which is conducive to cell and tissue growth. A comparatively uniform distribution of n-HA crystals in a single fiber even in the whole scaffold was confirmed by EDX. The biocompatibility of the composite was investigated by culturing osteobalsts on the scaffold. Good cell adhesion and proliferation manner was observed on the fibrous scaffold by SEM and MTT assay. It could be expected that the electrospun HA/PEA composite scaffold would be a potential biomimetic extracellular matrix biomaterial for bone tissue engineering.

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30

Yang, Xingxing, Linpeng Fan, Linlin Ma, Yunyi Wang, Si Lin, Fan Yu, Xiaohan Pan, Gejie Luo, Dongdong Zhang, and Hongsheng Wang. "Green electrospun Manuka honey/silk fibroin fibrous matrices as potential wound dressing." Materials & Design 119 (April 2017): 76–84. http://dx.doi.org/10.1016/j.matdes.2017.01.023.

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31

Jiang, Dengbang, Haoying Zou, Heng Zhang, Wan Zhao, Yaozhong Lan, and Mingwei Yuan. "Preparation and Properties of Electrospun PLLA/PTMC Scaffolds." Polymers 14, no. 20 (October 18, 2022): 4406. http://dx.doi.org/10.3390/polym14204406.

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Poly(L-lactide) (PLLA) and PLLA/poly(trimethylene carbonate) (PTMC) scaffolds characterised by different PLLA:PTMC mass ratios (10:0, 9:1, 8:2, 7:3, 6:4 and 5:5) were prepared via electrospinning. The results showed that increasing the PTMC content in the spinning solution caused the following effects: (1) the diameter of the prepared PLLA/PTMC electrospun fibres gradually increased from 188.12 ± 48.87 nm (10:0) to 584.01 ± 60.68 nm (5:5), (2) electrospun fibres with uniform diameters and no beads could be prepared at the PTMC contents of >30%, (3) the elastic modulus of the fibre initially increased and then decreased, reaching a maximum value of 74.49 ± 8.22 Mpa (5:5) and (4) the elongation at the breaking point of the fibres increased gradually from 24.71% to 344.85%. Compared with the PLLA electrospun fibrous membrane, the prepared PLLA/PTMC electrospun fibrous membrane exhibited considerably improved mechanical properties while maintaining good histocompatibility.

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32

Koepsell, Laura, Tyler Remund, Jing Bao, Daniel Neufeld, Hao Fong, and Ying Deng. "Tissue engineering of annulus fibrosus using electrospun fibrous scaffolds with aligned polycaprolactone fibers." Journal of Biomedical Materials Research Part A 99A, no. 4 (September 20, 2011): 564–75. http://dx.doi.org/10.1002/jbm.a.33216.

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33

Fredi, Giulia, Parnian Kianfar, Sara Dalle Vacche, Alessandro Pegoretti, and Alessandra Vitale. "Electrospun Shape-Stabilized Phase Change Materials Based on Photo-Crosslinked Polyethylene Oxide." Polymers 13, no. 17 (September 2, 2021): 2979. http://dx.doi.org/10.3390/polym13172979.

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Phase change materials (PCMs) in the form of fibers or fibrous mats with exceptional thermal energy storage ability and tunable working temperature are of high interest to produce smart thermoregulating textiles, useful for increasing human thermal comfort while avoiding energy waste. Common organic PCMs suffer from instability in their molten state, which limits their applicability as highly performing fibrous systems. In this work, electrospun fibrous mats made of polyethylene oxide (PEO), a PCM with excellent thermal properties and biocompatibility, were fabricated and their shape instability in the molten state was improved through UV photo-crosslinking. The characterization aimed to assess the performance of these shape-stable electrospun mats as nanofibrous PCMs for thermal management applications. In addition to an enhanced resistance to water-based solvents, UV-cured electrospun PEO mats demonstrated a remarkable latent heat (≈112 J/g), maintained over 80 heating/cooling cycles across the phase change temperature. Moreover, their morphological stability above their melting point was demonstrated both macroscopically and microscopically, with the retention of the initial nanofibrous morphology. Tensile mechanical tests demonstrated that the UV crosslinking considerably enhanced the ultimate properties of the fibrous mat, with a five-fold increase in both the tensile strength (from 0.15 MPa to 0.74 MPa) and the strain at break (from 2.5% to 12.2%) compared to the uncrosslinked mat. In conclusion, the photo-crosslinked electrospun PEO material exhibited high thermal properties and good shape stability without displaying leakage; accordingly, in the proposed PCM system, the necessity for encapsulation or use of a supporting layer has been eliminated. Photo-crosslinking thus proved itself as an effective, fast, and environmentally friendly method to dramatically improve the shape-stability of nanofibrous PEO electrospun mats for smart thermoregulating textiles.

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34

Han, Shanshan, Kexin Nie, Jingchao Li, Qingqing Sun, Xiaofeng Wang, Xiaomeng Li, and Qian Li. "3D Electrospun Nanofiber-Based Scaffolds: From Preparations and Properties to Tissue Regeneration Applications." Stem Cells International 2021 (June 17, 2021): 1–22. http://dx.doi.org/10.1155/2021/8790143.

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Electrospun nanofibers have been frequently used for tissue engineering due to their morphological similarities with the extracellular matrix (ECM) and tunable chemical and physical properties for regulating cell behaviors and functions. However, most of the existing electrospun nanofibers have a closely packed two-dimensional (2D) membrane with the intrinsic shortcomings of limited cellular infiltration, restricted nutrition diffusion, and unsatisfied thickness. Three-dimensional (3D) electrospun nanofiber-based scaffolds can provide stem cells with 3D microenvironments and biomimetic fibrous structures. Thus, they have been demonstrated to be good candidates for in vivo repair of different tissues. This review summarizes the recent developments in 3D electrospun nanofiber-based scaffolds (ENF-S) for tissue engineering. Three types of 3D ENF-S fabricated using different approaches classified into electrospun nanofiber 3D scaffolds, electrospun nanofiber/hydrogel composite 3D scaffolds, and electrospun nanofiber/porous matrix composite 3D scaffolds are discussed. New functions for these 3D ENF-S and properties, such as facilitated cell infiltration, 3D fibrous architecture, enhanced mechanical properties, and tunable degradability, meeting the requirements of tissue engineering scaffolds were discovered. The applications of 3D ENF-S in cartilage, bone, tendon, ligament, skeletal muscle, nerve, and cardiac tissue regeneration are then presented with a discussion of current challenges and future directions. Finally, we give summaries and future perspectives of 3D ENF-S in tissue engineering and clinical transformation.

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35

Wang, Meng, Shigang Lin та Kibret Mequanint. "Electrospun Biodegradable α-Amino Acid-Substituted Poly(organophosphazene) Fiber Mats for Stem Cell Differentiation towards Vascular Smooth Muscle Cells". Polymers 14, № 8 (11 квітня 2022): 1555. http://dx.doi.org/10.3390/polym14081555.

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Mesenchymal stem cells, derived from human-induced pluripotent stem cells (iPSC), are valuable for generating smooth muscle cells (SMCs) for vascular tissue engineering applications. In this study, we synthesized biodegradable α-amino acid-substituted poly(organophosphazene) polymers and electrospun nano-fibrous scaffolds (~200 nm diameter) to evaluate their suitability as a matrix for differentiation of iPSC-derived mesenchymal stem cells (iMSC) into mature contractile SMCs. Both the polymer synthesis approach and the electrospinning parameters were optimized. Three types of cells, namely iMSC, bone marrow derived mesenchymal stem cells (BM-MSC), and primary human coronary artery SMC, attached and spread on the materials. Although L-ascorbic acid (AA) and transforming growth factor-beta 1 (TGF-β1) were able to differentiate iMSC along the smooth muscle lineage, we showed that the electrospun fibrous mats provided material cues for the enhanced differentiation of iMSCs. Differentiation of iMSC to SMC was characterized by increased transcriptional levels of early to late-stage smooth muscle marker proteins on electrospun fibrous mats. Our findings provide a feasible strategy for engineering functional vascular tissues.

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36

Reis, Tiago C., Steven Castleberry, Ana M. B. Rego, Ana Aguiar-Ricardo, and Paula T. Hammond. "Three-dimensional multilayered fibrous constructs for wound healing applications." Biomaterials Science 4, no. 2 (2016): 319–30. http://dx.doi.org/10.1039/c5bm00211g.

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Electrical driven self-organization of electrospun fibers is used to create topographically bioinspired three-dimensional multilayered constructs, with tunable morphological and physicochemical properties for ideal wound dressings.

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37

Xiong, Jie, Pengfei Huo, and Frank K. Ko. "Fabrication of ultrafine fibrous polytetrafluoroethylene porous membranes by electrospinning." Journal of Materials Research 24, no. 9 (September 2009): 2755–61. http://dx.doi.org/10.1557/jmr.2009.0347.

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Poly(vinyl alcohol) (PVA) and poly(tetrafluoroethylene) (PTFE) emulsion were blended with different mass concentrations and the blended spinning solutions were electrospun into composite nanofibers. The influence of the blend ratio of PVA to PTFE and electrospinning technical parameters on the morphology and diameter of the composite nanofibers were investigated. According to the result of thermogravimetric analyzer analysis, the composite membrane was sintered at 390 °C. The membranes were then characterized by differential scanning calorimetry, attenuated total reflection-Fourier transform infrared (ATR-FTIR), and scanning electron microscopy, respectively. The mechanical properties of the membranes before and after sintering were analyzed through tensile testing. The results show that the PTFE porous membranes could be electrospun effectively, thus demonstrating their potential application as filter media.

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38

Navarrete, M., J. Gutierrez, R. Mayén, D. Aguirre, and J. L. Naude. "Photoluminescent electrospun fibrous mats for UV detector cards." Suplemento de la Revista Mexicana de Física 1, no. 3 (August 22, 2020): 1–8. http://dx.doi.org/10.31349/suplrevmexfis.1.3.1.

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The present paper describes the implementation of electrospinning technique to manufacture (polymeric-nonwoven) fibrous-mats (with micrometric/nanometric fibers) as photosensitive region. These mats are tailored and assembled in UV-A radiation detection cards. The selective photoluminescence of our mats is due to the Europium ions (Eu3+, Eu+2) added as Europium nitrate to a polymethyl methacrylate (PMMA) matrix. The electrospinning-equipment operation-parameters such as applied voltage (10 kV), distance from needle tip to collector plate (17 cm), and precursor-solution flow-rate (0.45 mL/h) are determined from the solution of a unidimensional model comprising three differential equations. The manufactured photoluminescent mats average-fiber-diameter is 1.3 ± 0.5 mm, with 76% void volume, average void-size of 7 mm, and average thickness of 350 mm. The photoluminescent mats sustain significant light absorption in the wavelength range of 245 to 350 nm and corresponding emission in the visible range of 400 to 650 nm.

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39

Xu, Xiaoming, and Jian-Feng Zhang. "Cross-linked Electrospun Fibrous Scaffolds for Tissue Engineering." Current Tissue Engineeringe 1, no. 1 (August 1, 2012): 2–14. http://dx.doi.org/10.2174/2211542011201010002.

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40

Chen, Huizhi, Yan Peng, Shucheng Wu, and Lay Tan. "Electrospun 3D Fibrous Scaffolds for Chronic Wound Repair." Materials 9, no. 4 (April 6, 2016): 272. http://dx.doi.org/10.3390/ma9040272.

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41

Tiwari, Manish K., Alexander L. Yarin, and Constantine M. Megaridis. "Electrospun fibrous nanocomposites as permeable, flexible strain sensors." Journal of Applied Physics 103, no. 4 (February 15, 2008): 044305. http://dx.doi.org/10.1063/1.2885112.

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42

Anitha, S., and T. S. Natarajan. "Electrospun Fibrous Nanocomposite Membrane for UV Shielding Applications." Journal of Nanoscience and Nanotechnology 15, no. 12 (December 1, 2015): 9705–10. http://dx.doi.org/10.1166/jnn.2015.11641.

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43

Ding, Bin, Michiyo Yamazaki, and Seimei Shiratori. "Electrospun fibrous polyacrylic acid membrane-based gas sensors." Sensors and Actuators B: Chemical 106, no. 1 (April 2005): 477–83. http://dx.doi.org/10.1016/j.snb.2004.09.010.

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44

Chen, Huiling, Xinyu Cao, Jingnan Zhang, Jingjing Zhang, Yongmei Ma, Guangqin Shi, Yucai Ke, Dewen Tong, and Lei Jiang. "Electrospun shape memory film with reversible fibrous structure." Journal of Materials Chemistry 22, no. 42 (2012): 22387. http://dx.doi.org/10.1039/c2jm33970f.

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45

Li, Jianjun, Chujun Nie, Beibei Duan, Xu Zhao, Haibao Lu, Weilong Yin, Yibin Li, and Xiaodong He. "Tensile performance of silica-based electrospun fibrous mats." Journal of Non-Crystalline Solids 470 (August 2017): 184–88. http://dx.doi.org/10.1016/j.jnoncrysol.2017.05.016.

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46

Mugheri, Abdul Qayoom, Shahid Ali, Ghulam Shabeer Narejo, Aijaz Ali Otho, Ramesh Lal, Maqsood Ahmed Abro, Shafqat Hussain Memon, and Furqanullah Abbasi. "Electrospun fibrous active bimetallic electrocatalyst for hydrogen evolution." International Journal of Hydrogen Energy 45, no. 41 (August 2020): 21502–11. http://dx.doi.org/10.1016/j.ijhydene.2020.06.005.

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47

Hunley, Matthew T., Matthew G. McKee, and Timothy E. Long. "Submicron functional fibrous scaffolds based on electrospun phospholipids." J. Mater. Chem. 17, no. 7 (2007): 605–8. http://dx.doi.org/10.1039/b613474b.

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48

Huang, Yunpeng, Yue-E. Miao, and Tianxi Liu. "Electrospun fibrous membranes for efficient heavy metal removal." Journal of Applied Polymer Science 131, no. 19 (May 7, 2014): n/a. http://dx.doi.org/10.1002/app.40864.

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49

Shabafrooz, Vahid, Masoud Mozafari, Daryoosh Vashae, and Lobat Tayebi. "Withdrawn: Performance enhancement of electrospun carbon fibrous nanostructures." Journal of Applied Polymer Science 129, no. 5 (December 22, 2012): 3077. http://dx.doi.org/10.1002/app.38830.

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50

Sundararaghavan, Harini G., Robert B. Metter, and Jason A. Burdick. "Electrospun Fibrous Scaffolds with Multiscale and Photopatterned Porosity." Macromolecular Bioscience 10, no. 3 (December 14, 2009): 265–70. http://dx.doi.org/10.1002/mabi.200900363.

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