Continuous Meter-Scale Wet-Spinning of Cornlike Composite Fibers for Eco-Friendly Multifunctional Electronics

2021 ◽  
Vol 13 (34) ◽  
pp. 40953-40963
Author(s):  
Chuang Wang ◽  
Yingzhan Li ◽  
Hou-Yong Yu ◽  
Somia Yassin Hussain Abdalkarim ◽  
Jinping Zhou ◽  
...  
Keyword(s):  
Wet Spinning ◽  
Composite Fibers

Continuous wet-spinning of flexible and water-stable conductive PEDOT: PSS/PVA composite fibers for wearable sensors

2020 ◽  
Vol 17 ◽  
pp. 134-140 ◽  
Author(s):  
Qiang Gao ◽  
Mingxu Wang ◽  
Xinyuan Kang ◽  
Chunhong Zhu ◽  
Mingqiao Ge
Keyword(s):  
Wearable Sensors ◽  
Wet Spinning ◽  
Composite Fibers

scholarly journals Hemocompatible Chitin-Chitosan Composite Fibers

Cosmetics ◽  
2020 ◽  
Vol 7 (2) ◽  
pp. 28 ◽  
Author(s):  
Ekaterina N. Maevskaia ◽  
Oksana P. Kirichuk ◽  
Sergei I. Kuznetzov ◽  
Elena N. Dresvyanina ◽  
Vladimir V. Yudin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Clinical Practice ◽  
Optical Density ◽  
Human Blood ◽  
Wet Spinning ◽  
Composite Fibers ◽  
Prolonged Contact ◽  
The Stability ◽  
Chitosan Composite

Composite chitosan fibers filled with chitin nanofibrils (CNF) were obtained by the wet spinning method. The paper discusses the mechanical properties of such type fibers and their hemocompatibility, as well as the possibility of optimizing these properties by adding chitin nanofibrils. It was shown that low CNF concentration (about 0.5%) leads to an increase in fiber tensile strength due to the additional orientation of chitosan macromolecules. At the same time, with an increase in the content of CNF, the stability of the mechanical properties of composite fibers in a humid medium increases. All chitosan fibers, except 0.5% CNF, showed good hemocompatibility, even on prolonged contact with human blood. The addition of chitin nanofibers leads to decrease in hemoglobin molecules sorption due to the decline in optical density at wavelengths of 414 nm and 540 nm. Nevertheless, the hemolysis of fibers was comparable or even lesser that carbon hemosorbent, which is actively used in clinical practice.

Preparation and Characterization of Alginate/Polyvinyl Alcohol Composite Fibers Containing Copper Ions

2013 ◽  
Vol 652-654 ◽  
pp. 1562-1565 ◽  
Author(s):  
Jing Guo ◽  
Qian He Chen ◽  
Yu Yan Zhang ◽  
Yu Mei Gong ◽  
Hong Zhang
Keyword(s):  
Tensile Strength ◽  
Polyvinyl Alcohol ◽  
Copper Ions ◽  
Fiber Surface ◽  
Coagulation Bath ◽  
Wet Spinning ◽  
Composite Fibers ◽  
Pseudoplastic Fluid ◽  
Cu Ions

Alginate/polyvinyl alcohol (PVA) composite fibers containing copper ions were prepared by wet spinning. The spinning solution and manufacturing process were researched. The composite fibers were characterized by Tensile Strength Tester, SEM and TGA. This report shows that the spinning solution is a typical kind of pseudoplastic fluid. Adding boric acid to coagulation bath and putting Cu ions into composite fibers can improve the strength. The structure of composite fibers with Cu ions is denser and there are grooves on the fiber surface. In addition, the thermal property of composite fibers is steady.

scholarly journals Antimicrobial Polymeric Materials; Cellulose and m-Aramid Composite Fibers

2007 ◽  
Vol 2 (4) ◽  
pp. 155892500700200 ◽  
Author(s):  
Jaewoong Lee ◽  
R. M. Broughton ◽  
S. D. Worley ◽  
T. S. Huang
Keyword(s):  
Mechanical Properties ◽  
Antimicrobial Activity ◽  
Polymeric Materials ◽  
Composite Fiber ◽  
Wet Spinning ◽  
Gram Negative Bacteria ◽  
Composite Fibers ◽  
Aramid Fibers ◽  
Gram Negative ◽  
Chlorine Bleach

Cellulose and m-aramid were dissolved in an ionic liquid, and dry-jet wet spinning was employed to prepare composite fibers which could be rendered antimicrobial through exposure to chlorine bleach. The small domains of the m-aramid allowed a much higher accessibility and degree of chlorination than has been reported even for 100% m-aramid fibers. The mechanical properties including denier, tenacity, and strain at break were evaluated. The chlorinated composite fiber inactivated both Gram-positive and Gram-negative bacteria. The antimicrobial activity was retained after repeated washing and recharging.

Programmable Release of Berberine Chloride Hydrate from Shape Memory Fibers Prepared from Core-Sheath Wet-Spinning Technology

2019 ◽  
Vol 15 (7) ◽  
pp. 1432-1442 ◽  
Author(s):  
Jiamin Tang ◽  
Ruifang Zhao ◽  
Xueqian Yin ◽  
Ya Wen ◽  
Yidong Shi ◽  
...  
Keyword(s):  
Shape Memory ◽  
Release Kinetics ◽  
Drug Carrier ◽  
Wet Spinning ◽  
Therapeutic Drug ◽  
Composite Fibers ◽  
Practical Applications ◽  
Berberine Chloride ◽  
Chloride Hydrate

Smart wet-spun fibers for highly programmable release of therapeutic drug have been rarely reported. Herein, thermalresponsive composite fibers were successfully prepared by core-sheath wet-spinning technology in present study. They consisted of a model drug of natural antibacterial berberine chloride hydrate (BCH) and a drug carrier of temperature responsive shape memory polyurethane (SMPU). The obtained composite fibers featured with well-controlled microscopic morphologies, exhibiting significantly enhanced thermal stability and superb mechanical properties. In vitro drug release test and corresponding release kinetics study were performed for investigation of BCH's release behavior. Results demonstrated that the release behaviors of BCH from the core-sheath fibers were pH-dependent, influenced by both diffusion from pore channels and the solubility of BCH in the release mediums, and BCH imbedded only in core part showed a longer release period compared with that in both core and sheath parts of the composite fibers. More importantly, the release rate of BCH can be simply controlled by changing the initial shapes of fibers through stretching and fixation of the stretched deformations. Furthermore, the antibacterial durability of the smart composites fibers was demonstrated and tracked according to the growth inhibition against both negative E. coli and positive S. aureus bacteria strains. All these results suggest that the developed composite fibers can be promising candidates as smart drug delivery vehicles for highly adjustable doses of target drugs towards practical applications.

Impact of the wet spinning parameters on the alpaca‐based polyacrylonitrile composite fibers: Morphology and enhanced mechanical properties study

2020 ◽  
Vol 137 (41) ◽  
pp. 49264 ◽  
Author(s):  
Md Abdullah Al Faruque ◽  
Rechana Remadevi ◽  
Joselito M. Razal ◽  
Maryam Naebe
Keyword(s):  
Mechanical Properties ◽  
Wet Spinning ◽  
Composite Fibers

Conductive Composite Fibers with a Rigid-Rod Matrix

1991 ◽  
Vol 255 ◽  
Author(s):  
Konstantinos Beltsios ◽  
S. H. Carr
Keyword(s):  
Acid Solution ◽  
Hierarchical Structure ◽  
Strong Acid ◽  
Wet Spinning ◽  
Composite Fibers ◽  
Conductive Composite ◽  
Rigid Rod ◽  
Percolation Processes

AbstractConductive composite fibers are prepared by dry-jet wet-spinning of a strong-acid solution of rod-like polymers and phthalocyanine(Pc) compounds. A model yielding a hierarchical structure for a pure rigid-rod fiber is described first. The inclusion of NiPc in the spinning dope leads upon coagulation to isolated NiPc domains that are predicted to correspond to body centered cells (exhibiting various degrees of disorder). The observed dependence of fiber conductivity of composition is explained in terms of tunneling and percolation processes.

scholarly journals The Impact of Shear and Elongational Forces on Structural Formation of Polyacrylonitrile/Carbon Nanotubes Composite Fibers during Wet Spinning Process

Materials ◽  
2019 ◽  
Vol 12 (17) ◽  
pp. 2797 ◽  
Author(s):  
Hamideh Mirbaha ◽  
Parviz Nourpanah ◽  
Paolo Scardi ◽  
Mirco D’incau ◽  
Gabriele Greco ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Young’S Modulus ◽  
Shear Force ◽  
Young's Modulus ◽  
Physical And Mechanical Properties ◽  
Wet Spinning ◽  
Composite Fibers ◽  
Pan Fibers ◽  
Spun Fibers

Wet spinning of polyacrylonitrile/carbon nanotubes (PAN/CNT) composite fibers was studied and the effect of spinning conditions on structure and properties of as-spun fibers influenced by the presence of CNTs investigated. Unlike PAN fibers, shear force had a larger effect on crystalline structure and physical and mechanical properties of PAN/CNT composite fibers compared to the elongational force inside a coagulation bath. Under shear force CNTs induced nucleation of new crystals, whereas under elongational force nucleation of new crystals were hindered but the already formed crystals grew bigger. To our knowledge, this key effect has not been reported elsewhere. At different shear rates, strength, Young’s modulus and strain at break of PAN/CNT as-spun fibers were improved up to 20% compared to PAN fibers. Application of jet stretch had less influence on physical and mechanical properties of PAN/CNT fibers compared to PAN fibers. However, the improvement of interphase between polymer chains and CNTs as a result of chain orientation may have contributed to enhancement of Young’s modulus of jet stretched composite fibers.

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