Issue 1, 2016

Improving the mechanical properties of cellulose diacetate fibers via using an ionic liquid as processing solvent

Abstract

The solutions of cellulose diacetates (CDA) in ionic liquids, 1-butyl-3-methylimidazolium chloride ([BMIM]Cl), 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM]BF4), 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM]PF6) and 1-butyl-3-methylimidazolium formate ([BMIM]COOH), have been investigated to identify the solvent for optimal CDA fiber performance. The CDA/[BMIM]Cl and CDA/[BMIM]BF4 solutions both behave as typical shear-thinning fluids that are beneficial for fiber spinning. The CDA/[BMIM]Cl solution exhibits higher flowability and spinnability than the CDA/[BMIM]BF4 solution. CDA fibers with compact morphology and smooth surface have been fabricated from the [BMIM]Cl solution. The tensile strength of the resulting CDA fibers (3.00 cN per dtex) is significantly improved over that of commercial CDA fibers (1.44 cN per dtex), even when the commercial fibers (3.83 dtex) are thinner than the new CDA fibers (5.20 dtex). The present method to fabricate CDA fibers with improved mechanical properties can be directly used for the production of fabric yarns and garments.

Graphical abstract: Improving the mechanical properties of cellulose diacetate fibers via using an ionic liquid as processing solvent

Supplementary files

Article information

Article type
Paper
Submitted
16 Oct 2015
Accepted
11 Dec 2015
First published
15 Dec 2015

RSC Adv., 2016,6, 1-7

Author version available

Improving the mechanical properties of cellulose diacetate fibers via using an ionic liquid as processing solvent

N. Liu, B. Wang, S. Chen, F. Ke, Y. Chen, Q. Pei and H. Wang, RSC Adv., 2016, 6, 1 DOI: 10.1039/C5RA21583H

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