Effect of Cellulose Pulp Type on the Mercerizing Behavior and Physical Properties of Lyocell Fibers

D. W. Chae, K. R. Choi, B. C. Kim, Y. S. oh

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

Abstract

Various crimped lyocell fibers are spun from isotropic dopes of cellulose solutions in N-methyl morpholine N-oxide (NMMO) monohydrate with different compositions of hard wood and softwood pulp (IPS lyocell fibers). The physical properties of IPS lyocell fibers treated with NaOH aqueous solutions are compared with those of commercially available Tencel lyocell fibers, which are obtained by anisotropic phase spinning. WAXD reveals that pulp composition has little effect on crystalline structure, and IPS lyocell fibers yield a crystalline structure almost the same as that of Tencel fibers (cellulose II structure). Alkali treatments affect physico-mechanical properties such as compaction and tensile proper ties. Mercerization with 10 wt% NaOH solution causes the largest weight loss and the highest degree of swelling. Lyocell fibers show a notable decrease in tensile strength when treated with strong alkali solutions higher than 7.5 wt%. In addition, IPS lyocell fibers with more softwood content display less reduction in tensile properties after strong alkali treatments.

Original languageEnglish
Pages (from-to)541-545
Number of pages5
JournalTextile Reseach Journal
Volume73
Issue number6
DOIs
StatePublished - Jun 2003

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