Crystalline structure and mechanical properties of wet-spun dibutyrylchitin fibers and products of their alkaline treatment

Dibutyrylchitin was obtained during krill chitin esterification with butyric anhydride in the presence of perchloric acid. The wet spinning of a 14.5% solution in dimethylformamide created dibutyrylchitin filaments, which were treated with an alkali solution for chitin regeneration. Fiber samples wi...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied polymer science 2004-12, Vol.94 (5), p.1861-1868
Main Authors: Włochowicz, Andrzej, Szosland, Lidia, Biniaś, Dorota, Szumilewicz, Joanna
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Fibers and threads
Forms of application and semi-finished materials
FT-IR
morphology
Polymer industry, paints, wood
structure
Technology of polymers
WAXS
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Dibutyrylchitin was obtained during krill chitin esterification with butyric anhydride in the presence of perchloric acid. The wet spinning of a 14.5% solution in dimethylformamide created dibutyrylchitin filaments, which were treated with an alkali solution for chitin regeneration. Fiber samples with different degrees of chitin restoration were obtained, and their fine structure and mechanical properties were investigated. The restoration of the chitin structure resulted in a gradual increase in the degree of crystallinity, the density of the structured area, the tensile strength, and the average elongation at rupture and in a decrease in the diameter of the fibers. The crystallinity degree of fully regenerated chitin, the final product of alkaline hydrolysis, reached a value close to that of native chitin. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 94: 1861–1868, 2004
ISSN:0021-8995
1097-4628
DOI:10.1002/app.20760