Novel method for the preparation of N-acylchitosan fiber and N-acylchitosan-cellulose fiber.
A novel method for the preparation of N-acylchitosan fiber and N-acylchitosan-cellulose fiber is described. Each aqueous solution of sodium N-acetyl and N-propionylchitosan salts in aqueous 14% NaOH was spun through a viscose-type spinneret at 10-15 degrees C into a coagulating bath containing aqueous 10%, H2SO4. 25% Na2SO4 and 1.3% ZnSO4 to afford the corresponding white fiber. By the same method, a clear solution of sodium N-acetyl and N-propionyl chitosan salts were respectively mixed with sodium cellulose xanthate in aqueous 14% NaOH and spun to afford the corresponding white N-acylchitosan-cellulose fiber. Their filament tenacity and elongation values were 0.4-0.7 times as large as cellulose. These fibers were digestible in reactions by chitinase and lysozyme, and the digestibility was controlled by the structure of the N-acyl group.
Hirano
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Chitin/Chitosan R&D Room, Department of Agricultural Biochemistry and Biotechnology, Tottori University, Japan.
Midorikawa
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D001458:Bandages; D001672:Biocompatible Materials / Q000138:chemical synthesis / Q000737:chemistry*; D001704:Biopolymers / Q000737:chemistry*; D002482:Cellulose / Q000138:chemical synthesis / Q000737:chemistry*; D002686:Chitin / Q000031:analogs & derivatives* / Q000138:chemical synthesis / Q000737:chemistry; D048271:Chitosan; D013537:Sutures
D001672:Biocompatible Materials; D001704:Biopolymers; D002686:Chitin; D002482:Cellulose; D048271:Chitosan