A retardation effect of boric acid on the cyclization reaction of polyacrylonitrile (PAN) was clearly observed by Fourier transform infrared spectroscopy. The Lewis acid nature of boric acid probably accounts for this retardation effect. A quantitative evaluation of this effect was also made, indicating two potential applications, i.e., high temperature stabilization and melt spinning, which ar...

Silk fiber has gained its importance in the field of tissue engineering due to its excellent mechanical and biocompatible properties. The properties of silk fiber can be engineered for its suitable use in tissue engineering by its regeneration in the form of films or fibers. This review paper summarizes current research related to regeneration techniques for silk fiber preparation, characterist...

High-voltage electrical fields and low production rate limit electrospinning, the electrical charging of polymer liquids, as a means of nanofiber fabrication. Here, we show a facile method of fabrication of aligned three-dimensional nanofiber structures by utilizing high-speed, rotating polymer solution jets to extrude fibers. Termed rotary jet-spinning, fiber morphology, diameter, and web poro...

Herein, chitosan (CS) fibers coated with TEMPO-oxidized cellulose nanofibers (CS/TOCN fibers) were successfully prepared using a wet spinning technique; CS was dissolved in acetic acid to obtain doping solution. The tensile strength and ammonia adsorption percentages increased increasing TOCN concentration. maximum percentage (41.39%, 8.3 mg/g) obtained when 2% NaOH 0.01% used as the coagulatio...

A route for the fabrication of porous inorganic hollow fibers with high surface-area-to-volume ratio that avoids harmful solvents is presented. The approach is based on bio-ionic gelation of an aqueous mixture of inorganic particles and sodium alginate during wet spinning. In a subsequent thermal treatment, the bio-organic material is removed and the inorganic particles are sintered. The method...

Abstract Electronic fibers/textiles have great potential for applications in smart wearables due to their excellent flexibility, air permeability, and wearing comfort. However, it is still challenging produce reliable electronic textiles at low cost a large scale. Herein, we report spraying‐spinning process fabricating yarns with stability durability. Cotton sliver, which the raw material spinn...

Lignin is an abundant biopolymer present in wood biomass and a promising renewable precursor for carbon materials. Lignin-derived fibers (CFs) are attractive target sustainable composite applications, due to the global scope achieving energy efficiencies, if cost-effective manufacturing technologies can be developed. Here, mixture of low-cost (<$1/kg) ionic liquid (IL), N,N-dimethylbutylammoniu...

An experiment was conducted to describe the characteristics of Angora rabbit fiber using optical fiber diameter analyzer (OFDA). A total of 349 fleece samples were collected from 60 French Angora rabbits. Recorded measurements of OFDA were as follows: mean fiber diameter, CV of fiber diameter, comfort factor, spinning fineness, mean fiber curvature, SD of fiber curvature, mean opacity of fibers...

Biodegradable fibers of poly(L-lactic acid) (PLLA) and poly(D,L-lactide-co-glycolide) (PLGA) that encapsulated a water-soluble drug were created by a patented technique consisting of wet-spinning a water-in-oil emulsion. These fibers are 2.4% by mass drug, which is slowly released, making these fibers potential candidates for implantation as drug delivery devices and/or tissue-engineering subst...

Silk fibers are fibrous protein with unique combination of strength and toughness. Its biocompatibility makes it an ideal candidate for various biomedical applications. We hypothesized that composites consisting of silk and carbon nanotube (CNT) will have superior mechanical properties. This paper describes the production of protein based scaffolds having required mechanical properties and acti...