Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Preparation and Properties of Poly(vinyl alcohol)/Chitosan Blend Films

폴리(비닐 알코올)/키토산 블렌드 필름의 제조 및 특성

  • 정민기 (영남대학교 섬유패션학부) ;
  • 김대선 (영남대학교 섬유패션학) ;
  • 최용혁 (영남대학교 섬유패션학) ;
  • 손태원 (영남대학교 섬유패션학) ;
  • 권오경 ((주)청우섬유 기술연구) ;
  • 임학상 (세명대학교 환경안전시스템공학부)
  • Published : 2004.05.01
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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.

독성이 없고 생분해성과 생체적합성을 가지는 폴리(비닐 알코올)/키토산 블렌드 필름들은 용액상태로 캐스팅 하여 제조하였다. 블렌드 필름들의 물리화학적 특성들의 변화는 여러 가지의 분석방법을 통해 조사하였다. 항균특성의 고찰에서 키토산이 10 wt% 이상 함유된 모든 블렌드 필름의 정균율은 99.9%로 우수하게 나타났다. 수분율은 키토산의 함량이 증가함에 따라 증가하나 팽윤도는 감소하였다. 키토산 함량이 15 wt% 내에서는 블렌드 필름의 용융온도와 결정화온도가 키토산의 함량에 따라 증가하였다. 또한, 키토산이 10, 15 wt% 함유된 블렌드 필름들은 용융온도가 각각 229와 228$^{\circ}C$로 순수 PVA보다 높은 값을 나타내었다. 그러나 키토산 함량이 20 wt% 이상일 경우 용융온도는 감소하였다. 블렌드 필름의 역학적 특성들은 습윤상태 및 건조상태 모두 키토산 함량이 증가함에 따라 증가한다 키토산 함량이 15 wt% 내에서 높은 인장강도를 나타낸다.

Keywords

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