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Preparation and Properties of Poly(vinyl alcohol)/Chitosan Blend Films  

정민기 (영남대학교 섬유패션학부)
김대선 (영남대학교 섬유패션학)
최용혁 (영남대학교 섬유패션학)
손태원 (영남대학교 섬유패션학)
권오경 ((주)청우섬유 기술연구)
임학상 (세명대학교 환경안전시스템공학부)
Publication Information
Polymer(Korea) / v.28, no.3, 2004 , pp. 253-262 More about this Journal
Abstract
Poly(vinyl alcohol)(PVA)/chitosan blend films with non-toxicity, biodegradability, and biocom-patibility were prepared by solution casting. Variation of the physicochemical properties of the blend films was investigated through to several analysis methods. Examination of antibacterial properties revealed that bacterio-static ratios of all blend samples containing chitosan more than 10 wt% were greater than 99.9%. Moisture regain was increased with increasing chitosan content but the degree of swelling was decreased. Up to chitosan content 15 wt%t, the melting and crystallization temperature of blend films was increased with chitosan content. The blends containing chitosan content 10 and 15 wt% gave melting temperature 229 and 228$^{\circ}C$, respectively. However, the melting temperature was decreased if chitosan content exceeded 20 wt%. The mechanical properties of the blend films were increased with increasing chitosan content in both dry and wet states. The blend film including 15 wt% chitosan exhibited unusually high tensile strength.
Keywords
PVA; Chitosan; Blend; Thermal behavior; Mechanical; properties.;
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