키토산을 이용한 기능성 소재 개발 1. 키토산 섬유와 S-카르복시메틸케라틴 코팅 키토산 섬유의 제조와 특성

Development of Functional Textile Material by Using Chitosan 1. Preparation and Characterization of Chitosan Fiber and Chitosan Fiber Coated with S-carboxymethyl Keratein

Chitosan fiber was prepared by wet spinning with various draw ratio. Chitosan fiber was coated with f-carboxymethyl keratein(SCMK) by extruding chitosan solution into 1 M NaOH solution containing 1% SCMK. Among three chitosan used in this study(chitosans of 5 cps, 50 cps, 100 cps), 50 cps chitosan gave the best tenacity and optimum concentration was 5%. SCMK coating increased the tenacity of chitosan fiber. Regardless of SCMK coating, tenacity and elongation of both chitosan fibers were increased with the increase of draw ratio. Chitosan fiber showed antimicrobial activity against Staphyloccus aureus showing 66∼72% of bacteria reduction rates. On the other hand, chitosan fiber coated with SCMK didn't show any antimicrobial activity.