Wash-dry cycle induced changes in low-ordered parts of regenerated cellulosic fibers

Three regenerated cellulosic fiber types: lyocell, viscose, and modal were subjected to repetitive wet–dry treatments. Simulated treatments showed reorganization of the internal fiber structure which could be determined by accessibility studies. The reduction in liquid water retention capacity was f...

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Bibliographic Details
Published in:Journal of applied polymer science 2012-10, Vol.126 (S1), p.E397-E408
Main Authors: Široká, Barbora, Manian, Avinash P., Noisternig, Michael F., Henniges, Ute, Kostic, Mirjana, Potthast, Antje, Griesser, Ulrich J., Bechtold, Thomas
Format: Article
Language:English
Subjects:
Abrasion resistance
accessibility
Cellulose fibers
Fibers
hornification
Materials science
mechanical properties
Molecular weight distribution
Polymers
Reduction
regenerated cellulose
Reproduction
Sorption
structure
Water vapor
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Summary:Three regenerated cellulosic fiber types: lyocell, viscose, and modal were subjected to repetitive wet–dry treatments. Simulated treatments showed reorganization of the internal fiber structure which could be determined by accessibility studies. The reduction in liquid water retention capacity was found to be greater for lyocell than that for modal and viscose, sorption of iodine, and water vapor reduced for all studied fibers. The wet–dry treatment did not have influence on chemical reactivity of cellulosic fibers characterized by complexation of iron under highly alkaline conditions. The effect of wet–dry treatment on the tenacity, elongation at break, abrasion resistance, and molecular weight distribution of fibers was also explored in this study. The reduced strength in treated specimens was not accompanied by changes in molecular weight distributions. Based on these results, the changes observed in wet–dry‐treated specimens were observed mainly owing to polymer reorganization in amorphous parts of the fibers. © 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
ISSN:0021-8995
1097-4628
DOI:10.1002/app.36894