Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 138, Issue 18, Pages -Publisher
WILEY
DOI: 10.1002/app.50358
Keywords
biomaterials; biopolymers and renewable polymers; fibers
Categories
Funding
- Bangladesh University of Engineering and Technology [DAERS/CASR/R-01/2015/DR-2359(102)]
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The study found that the appropriate combination of solvent-coagulant can form stable cellulose acetate fiber, with the addition of crosslinkers and catalyst further increasing the strength and usability of the fiber.
Wet spinning is a popular fiber manufacturing process where the effects of solvent and coagulant on the wet-spun fiber are significant. In this study, we have explored the effect of solvent-coagulant interaction and in-situ crosslinking on the wet-spun cellulose acetate (CA) fiber. Investigation on 12 different solvent-coagulant systems revealed that variation in the systems resulted in significant variance in morphology and mechanical property of the fiber. Remarkable increase in mechanical property was observed after in-situ crosslinking with citric acid and polyethylene glycol (PEG). Inclusion of sodium hypophosphite (NaH2PO2) as catalyst further increased tensile modulus (similar to 407%) and crystallinity index (similar to 46%) compared to CA fiber crosslinked with only citric acid. It was established that fiber from CA-DMSO solution crosslinked with 10% citric acid and 10% PEG extruded in ethanol showed the highest tensile modulus (similar to 30 MPa). This in-depth study found an appropriate combination of solvent-coagulant for forming stable CA fiber, with the addition of crosslinkers and catalyst further increasing the strength and usability of the fiber.
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