Polymer(Korea) (폴리머)

The Polymer Society of Korea (한국고분자학회)
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Morphology, Thermal and Mechanical Properties of Poly(lactic acid)/Poly(butylene adipate-co-terephthalate)/CMPS Blends

Poly(lactic acid)/Poly(butylene adipate-co-terephthalate)/CMPS 블렌드의 형태학, 열적 및 기계적 특성

  • Kang, Kyoung-Soo (School of Display and Chemical Engineering, Yeungnam University) ;
  • Kim, Bong-Shik (School of Display and Chemical Engineering, Yeungnam University) ;
  • Jang, Woo-Yeul (School of Display and Chemical Engineering, Yeungnam University) ;
  • Shin, Boo-Young (School of Display and Chemical Engineering, Yeungnam University)
  • 강경수 (영남대학교 디스플레이화학공학부) ;
  • 김봉식 (영남대학교 디스플레이화학공학부) ;
  • 장우열 (영남대학교 디스플레이화학공학부) ;
  • 신부영 (영남대학교 디스플레이화학공학부)
  • Published : 2009.03.25
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Abstract

The effects of chemically modified thermoplastic starch (CMPS) on the morphology, thermal and mechanical properties of the blends of poly (lactic acid)(PLA) and poly(butylene adipate-co-terephthalate)(PBAT) were studied. Blends of PLA/PBAT with the CMPS contents of 10, 20 and 30 wt% on the basis of PLA/PBAT weight were prepared by a twin screw extruder. The morphology, thermal and mechanical properties of the blends were examined by using scanning electron microscope (SEM), differential scanning calorimeter (DSC) and a tensile tester. The DSC study revealed that PLA/PBAT blends are thermodynamically immiscible, while the compatibility was much improved by addition of the CMPS.

본 연구는 화학적으로 개질된 열가소성 전분(chemically modified thermoplastic starch(CMPS))과 poly(lactic acid)(PLA)와 poly(butylene adipate-co-terephthalate)(PBAT) 블렌드의 형태학, 열적 및 기계적 특성에 미치는 영향에 대해서 연구하였다. PLA/PBAT 블렌드에 CMPS를 이 블렌드의 중량기준으로 10, 20, 30 wt%를 첨가하여 이축압출기로 가공하였다. PLA/PBAT/CMPS 블렌드에서 PLA의 유리전이온도($T_g$)는 CMPS 함량이 증가하여도 큰 변화를 나타내지 않았지만, CMPS의 첨가에 의해 PLA상과 PBAT상 사이의 계면상태가 좋아지는 상용성 있는 형태학을 보여주었다.

Keywords

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