Study on the Biodegtadable Aliphatic Polyester(III) : Compatibility of Copolyesterethylene/EVA (VA15%) Blends

생분해성 지방족 폴리에스테르에 관한 연구(III) : Copolyesterethylene/EVA(VA15%) 블랜드의 상용성

  • Park, Tae-Wook (Polymer Chemistry Division, National Industrial Technology Institute) ;
  • Kang, Hye-Jung (Polymer Chemistry Division, National Industrial Technology Institute) ;
  • Kim, Yong-Joo (Polymer Chemistry Division, National Industrial Technology Institute) ;
  • Lee, Chi-Giu (Polymer Chemistry Division, National Industrial Technology Institute)
  • 박태욱 (국립공업기술원 고분자화학과) ;
  • 강혜정 (국립공업기술원 고분자화학과) ;
  • 김용주 (국립공업기술원 고분자화학과) ;
  • 이치규 (국립공업기술원 고분자화학과)
  • Received : 1994.06.23
  • Accepted : 1994.08.01
  • Published : 1994.10.01

Abstract

Melt blends of copolyesterethylene(CPEE) and ethylene vinylacetate copolymer(EVA) with 15% vinylacetate content were prepared in the ratio of 0 to 100% CPEE with 10% interval for the purpose of obtaining useful biodegradable polymer system. Miscibility behavior of melt blend samples has been studied by observing the melting temperature change and cold crystallization temperature with differential scanning calorimetry. From the results of thermal analysis, it was shown that each 10% blend composition of CPEE and EVA had the partially miscibility. Useful compatibility has been observed in all blend composition except the samples of 50~80 % CPEE composition from the mechanical property study. Compatibility of these blend has been also observed with scanning electron microscopy. Biodegradability of CPEE/EVA blends has been evaluated by observing the change of specimen with Image analyzer before and after the inoculation with specific microorganism.

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Acknowledgement

Supported by : 상공자원부