Premium
Wet spinning of chitosan and the acetylation of chitosan fibers
Author(s) -
East George C.,
Qin Yimin
Publication year - 1993
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.1993.070501013
Subject(s) - chitosan , acetic anhydride , spinning , thermal stability , ultimate tensile strength , solubility , aqueous solution , chemical engineering , materials science , polymer chemistry , fiber , chitin , acetic acid , chemistry , nuclear chemistry , composite material , organic chemistry , catalysis , engineering
Chitosan fibers were made by wet spinning of its solution in 2% aqueous acetic acid. The fiber properties were affected by processing conditions, such as spin stretch ratio, coagulation bath composition, and drying conditions. The chitosan fibers were acetylated with acetic anhydride in methanol, producing regenerated chitin fibers. The acetylation process was affected by the reaction temperature, the treatment time, and the molar ratio of anhydride to amine groups. The properties of the acetylated chitosan fibers were studied in terms of thermal stability, solubility, and mechanical properties. It was found that, after acetylation, the fibers had an improved thermal stability and tensile strength. © 1993 John Wiley & Sons, Inc.