Spinning of regenerated cellulose using ionic liquids

Document Type

Conference Proceeding

Publication Date

1-1-2014

Abstract

In this project, ionic liquid 1-ethyl-3-methylimidazolium acetate (EMIMAc) was used in the spinning of regenerated cellulose micron fiber. EMIMAc is a better candidate for dissolving cellulose for the production of regenerated cellulose fiber because it has a lower melting point than 1-Butyl-3-methylimidazolium Chloride (BMIMCl) and thus the manufacturing process requires less energy for fiber formation1, 2, 3. Additionally, EMIMAc residuals are not toxic and are safe for use as a biocompatible material4. A computer-controlled syringe was used to produce the EMIMAc fiber while an extruder was used to produce the BMIMCl fiber. We compared the processes of spinning and evaluated the differences in tensile strength and crystallinity of the cellulose fiber produced from EMIM Acetate with those of the cellulose fiber spun from BMIMCl solvent. We found that there were significant differences in the tensile strength, but not in the elongation and modulus of the fibers based on ANOVA results. Thermogravimetric analysis (TGA) data showed that the EMIMAc fiber was more stable at higher temperatures than BMIMCl fiber. The crystal size, crystal orientation, and crystallinity index were also reported for pulp cellulose, BMIMCl, and EMIMAc fibers. Lastly, solvent residual data was included for EMIMAc fiber and BMIMCl fiber. Based on the data gathered, we confirmed that the EMIMAc solvent would be advantageous in the manufacturing process of spinning regenerated cellulose fiber.

Publication Source (Journal or Book title)

American Association of Textile Chemists and Colorists International Conference, AATCC 2014

First Page

28

Last Page

34

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