Construction of PANI–cellulose composite fibers with good antistatic properties

2014 ◽  
Vol 2 (21) ◽  
pp. 7669-7673 ◽  
Author(s):  
Xingwei Shi ◽  
Yanli Hu ◽  
Feiya Fu ◽  
Jinping Zhou ◽  
Yixiang Wang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Wet Spinning ◽  
Complex Solution ◽  
Composite Fibers ◽  
Cellulose Composite

Novel polyaniline (PANI)/cellulose filament fibers were spun from hydrophobic PANI and hydrophilic cellulose complex solution dissolved in aqueous solution containing 7 wt% NaOH/ 12 wt% urea as solvent by wet-spinning. At low PANI content, the composite fibers realized a transition from an insulator to semiconductor.

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 Multiwall-carbon-nanotube/cellulose composite fibers with enhanced mechanical and electrical properties by cellulose grafting

RSC Advances ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 5678-5684 ◽  
Author(s):  
Shaobo Zhang ◽  
Feiran Zhang ◽  
Yanfei Pan ◽  
Liping Jin ◽  
Bo Liu ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Electrical Properties ◽  
Multiwall Carbon Nanotube ◽  
Composite Fibers ◽  
Mechanical And Electrical Properties ◽  
Cellulose Composite ◽  
Multiwall Carbon

MWCNT-cellulose/cellulose composite fibers with enhanced mechanical and conducting properties were preparedviafacilitating the dispersion of MWCNTs in fibers.

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.

Wet-Spinning of Reinforced Artificial Silk Hybrid Fibres by Cellulose Whiskers

2011 ◽  
Vol 175-176 ◽  
pp. 272-275 ◽  
Author(s):  
Lin Liu ◽  
Ju Ming Yao
Keyword(s):  
Aqueous Solution ◽  
Tensile Strength ◽  
Young’S Modulus ◽  
Room Temperature ◽  
Young's Modulus ◽  
Wet Spinning ◽  
Hybrid Fibers ◽  
Characteristic Index ◽  
Cellulose Whiskers ◽  
Cellulose Whisker

In this paper, the cellulose whisker/silk fibroin (CW/SF) aqueous solution with different composition was obtained by a dialysis against polyethylene glycol (PEG) solution at room temperature. The rheological behavior of CW/SF solution was investigated and the reinforced CW/SF hybrid fibres were prepared by a dry-wet spinning method. The results showed that the spinnability was better for the CW/SF solution according to the calculation of flowing characteristic index. The cellulose whiskers were dispersed homogeneously in the silk matrix. Moreover, it could be found that the tensile strength and Young’s modulus of the hybrid fibers were improved with the increase of cellulose whisker content, which reached the maximum when the cellulose whisker content was 5 wt%. Compared with the pure silk fiber, the tensile strength and Young’s modulus of the CW/SF hybrid fibers containing 5 wt% CWs were increased from 135.78±12.73 MPa and 5.74±0.43 GPa to 438.68±22.63 MPa and 17.36±2.04 GPa, respectively.

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.

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