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Structural characteristics of wool fiber modified with itaconic anhydride
Author(s) -
Tsukada Masuhiro,
Goto Yohko,
Romanó; Maria,
Ishikawa Hiroshi,
Shiozaki Hideki
Publication year - 1992
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1992.070460819
Subject(s) - wool , itaconic acid , materials science , fiber , ultimate tensile strength , thermostability , polymer chemistry , silk , dyeing , composite material , chemistry , polymer , organic chemistry , copolymer , enzyme
The physicochemical properties of wool fibers chemically modified with itaconic anhydride in dimethylformamide were analyzed by DSC, TMA, and TGA and on the basis of measurements of the tensile characteristics. The acyl content in wool fiber increased even at the comparatively low reaction temperature (65°C) compared with that in silk fiber; this fact was due to the larger number of reactive sites in the wool than in silk such as basic amino acid residues. On the basis of DSC, TMA, and TGA analyses, the high thermostability of the modified wool fiber was evident. The molecular orientation, evaluated from the birefringence measurement, decreased slightly after the modification; however, tensile properties and surface characteristics of the wool fiber were not damaged. © 1992 John Wiley & Sons, Inc.