Study on the Biodegradable Aliphatic Polyester(V): Thermal and Mechanical Properties of Copolyesterethylene/LDPE Blend

생분해성 지방족 폴리에스테르에 관한 연구(V) : Copolyesterethylene/LDPE 블렌드의 열적 성질 및 기계적 성질

  • Park, Tae-Wook (Polymer Chemistry Division, Nat'l Industrial Technology Institute) ;
  • Kang, Bye-Jung (Polymer Chemistry Division, Nat'l Industrial Technology Institute) ;
  • Kim, Yong-Joo (Polymer Chemistry Division, Nat'l Industrial Technology Institute) ;
  • Lee, Chi-Giu (Polymer Chemistry Division, Nat'l Industrial Technology Institute)
  • 박태욱 (국립공업기술원 고분자화학과) ;
  • 강혜정 (국립공업기술원 고분자화학과) ;
  • 김용주 (국립공업기술원 고분자화학과) ;
  • 이치규 (국립공업기술원 고분자화학과)
  • Received : 1994.08.18
  • Accepted : 1994.09.27
  • Published : 1994.12.01

Abstract

Blend samples of biodegradable copolyesterethylene(CPEE) with LDPE were prepared by melt-mixing through 0 to 100% per 10% interval for studying of common use of biodegradable polymer. Miscibility behavior of blend samples has been studied by observing the melting temperature change, melting enthalpy, cold crystallization temperature and crystallization enthalpy using differential scanning calorimetry. It was shown that 10~30% blend composition of CPEE had the partial miscibility from the results of thermal analysis. Valuable compatibility has been observed in all blend composition except the samples of 30~80% CPEE component from results of mechanical properties. Morphology of blends has been observed with scanning electron microscopy. Biodegrability of CPEE/LDPE blends has been evaluated by measuring the change of weight after the inoculation with specific microorganism.

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Acknowledgement

Supported by : 상공자원부