Novel method for the preparation of N-acylchitosan fiber and N-acylchitosan-cellulose fiber

• Published in: Biomaterials Vol. 19; no. 1; pp. 293 - 297
• Main Authors: Hirano, Shigehiro, Midorikawa, Takehiko
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-01-1998; Elsevier Science
• Subjects: Bandages; Biocompatible Materials - chemical synthesis; Biocompatible Materials - chemistry; Biodegradation; Biological and medical sciences; Biopolymers - chemistry; Cellulose; Cellulose - chemical synthesis; Cellulose - chemistry; Chitin; Chitin - analogs & derivatives; Chitin - chemical synthesis; Chitin - chemistry; Chitosan; Medical sciences; N-acetylchitosan fiber; N-acetylchitosan-cellulose fiber; N-propionylchitosan fiber; N-propionylchitosan-cellulose fiber; Natural fibers; Radiotherapy. Instrumental treatment. Physiotherapy. Reeducation. Rehabilitation, orthophony, crenotherapy. Diet therapy and various other treatments (general aspects); sodium N-acylchitosan salts; Solutions; Sutures; Technology. Biomaterials. Equipments. Material. Instrumentation; N-acetylchitosan-cellulose fiber; N-propionylchitosan-cellulose fiber; N-propionylchitosan fiber; N-acetylchitosan fiber; sodium N-acylchitosan salts; Biomaterial; Chitosan; Cellulose; Fiber; Biomedical engineering
• ISSN: 0142-9612; 1878-5905
• DOI: 10.1016/S0142-9612(97)00216-0

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°C into a coagulating bath containing aqueous 10% H
2SO
4. 25% Na
2SO
4 and 1.3% ZnSO
4 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.