Fiber preparation of N-acylchitosan and its cellulose blend by spinning their aqueous xanthate solutions
1998
Hirano, S. | Usutani, A. | Yoshikawa, M. | Midorikawa, T.
This study aims to develop a method of preparing novel fibers of N-acylchitosan and N-acylchitosan-cellulose by spinning an aqueous alkaline solution of their sodium xanthates. A solution of sodium N-acylchitosan salt in aqueous 14% NaOH was treated with carbon disulfide to afford an aqueous solution of sodium N-acylchitosan xanthate. The solution of sodium N-acylchitosan xanthate, and its solution mixed with sodium cellulose xanthate, were spun at 45-50 degrees C through a viscose-type spinneret into a coagulation bath containing aqueous 10% H2SO4, 32% Na2SO4 and 1.3% ZnSO4. A total of eight fibers of N-acetylchitosan, N-propionylchitosan, N-acetylchitosan-cellulose (6 : 4, 4 : 5 and 3 :7 w/w) and N-propionylchitosan-cellulose (4 : 6, 5 : 5 and 3 :7 w/w) were prepared. All these fibers were white and had good mechanical properties.
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