• Preparation and Properties of Plasticized Cellulose Diacetate Using Triacetine/Epoxidized Soybean Oil
  • Lee SH, Lee SY, Lim HK, Nam JD, Kye H, Lee Y
  • 트리아세틴/ESO를 이용한 가소화 셀룰로오스 디아세테이트의 제조 및 물성
  • 이상환, 이상율, 임환규, 남재도, 계형산, 이영관
Abstract
The plasticized cellulose diacetate (CDA) was prepared by melt processing methods using triacetine (TA) as a plasticizer. Additionally, processability of CDA was enhanced by using epoxidized soybean oil as a secondary plasticizer. The glass transition temperature of plasticized CDA was observed at 50 ℃ lower than virgin CDA and the incorporation of 5% ESO also resulted in the additional 20 ℃ decrease in the Tg. The tensile properties and modulus of plasticized CDA were better than commercial PP and PLA. The aerobic biodegradability of CDA in controlled compositing condition resulted in 90% of degradation during 60 days.

트리아세틴(TA)을 가소제로 이용하여 용융 가공법으로 가소화된 셀룰로오스 디아세테이트(CDA)를 제조하였다. 또한 2차 가소제로 에폭시화된 콩기름(ESO)을 사용하여 CDA의 가공성을 향상시켰다. DMA 분석으로 CDA에 20%의 가소제를 사용한 경우 Tg가 약 50 ℃ 낮게 나타났고 여기에 ESO를 5% 더 첨가했을 때는 약 20 ℃ Tg가 감소하였다. 또한 TA로 가소화된 CDA필름이 폴리프로필렌(PP) 또는 폴리락트산(PLA)보다 우수한 인장강도 및 탄성률을 나타내었다. 호기성 퇴비화 조건에서 CDA는 60일 동안 셀룰로오스 대비 약 90 %의 생분해도를 나타내었다.

Keywords: biodegradable polymer; cellulose diacetate; plasticizer; melt processing

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
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This Article

  • 2006; 30(3): 202-206

    Published online May 25, 2006

  • Received on Oct 10, 2005
  • Accepted on May 9, 2006