화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.12, No.4, 198-204, December, 2006
Export Citation
반응압출법에 의해 개질된 폴리카프로락톤의 물성에 관한 연구
Properties of Polycaprolactone Modified by Reaction Extrusion
신부영†, 장상희1
  • 영남대학교 디스플레이화학공학부, 712-749 경북 경산시 대동 214-1번지
  • 1구미대학 식품영양과전공, 730-711 경북 구미시 부곡동 407번지
Boo Young Shin†, and Sang Hee Jang1
  • School of Display and Chemical Engineering, Yeungnam University, 214-1 Dae-dong, Gyoungsan, Gyeongbuk 712-749, Korea
  • 1Major in Food Art & Nutrition Science, Gumi College, 407 Bugok-dong, Gumi, Gyeongbuk 730-711, Korea
E-mail:
초록
생분해성 고분자인 폴리카프로락톤을 반응개시제를 첨가하여 반응압출법으로 개질시켰다. 개시제의 함량은 중량 백분율로 0.1, 0.3, 0.5 그리고 1.0% 이었고 이축압출기의 온도는 130~180℃로 운전하였다. 개질된 폴리카프로락톤에 대한 열분석, 분자량 분석, 기계적 강도 측정, 유변학적 특성 및 생분해도 연구를 수행하였다. 개질된 폴리카프로락톤은 순수 폴리카프로락톤과 비교하여 여러 물성에서 차이를 보였다. 개시제 1% 개질 폴리카프로락톤은 약 20%의 결정화도 감소, 약 50%의 인장탄성률 상승을 보였고, 복합점도, 유변학적 특성인 저장탄성률 및 손실탄성률의 큰 증가를 보여주었다. 0.1%의 가장 적은 개시제로 개질된 폴리카프로락톤의 생분해도는 순수 폴리카프로락톤과 비슷한 생분해도를 보였으나, 나머지는 생분해도가 증가하였다.
The modification of biodegradable polycaprolactone was accomplished by reactive extrusion with various contents of free radical initiator. Reaction conditions were in the temperature range of 130℃ to 18℃ with initiator contents of 0.1, 0.3, 0.5 and 1.0 wt%. To characterize the modified polycaprolactone (PCL), molecular weight was measured by gel permeation chromatography(GPC) and thermal, mehanical and rheological properties as well as biodegradability were measured. the modified PCL (MPCL) with 1% of initiator showed ca. 20% increase in crystallinity and ca. 50% increase in tensile modulus. Also, a large increase in rheological properties such as complex viscosity, storage and loss modulus was observed. The biodegradability of most MPCL was higher than that of virgin PCL.
Keywords:폴리카프로락톤;반응압출공정;물성;생분해
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