Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Mechanical Properties and Shape Memory Function of Poly(ethylerle terephthalate) Copolymers with Poly(ethylene glycol)

폴리에틸렌 글리콜을 제 3의 성분으로 한 폴리에틸렌 테레프탈레이트 공중합체의 기계적 성질 및 형상기억능에 관한 연구

  • 정대원 (수원대학교 공과대학 고분자공학과) ;
  • 전병철 (수원대학교 공과대학 고분자공학과)
  • Published : 1997.10.01

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Abstract

Copolyesters consisting of dimethyl terephthalate (DMT), ethylene glycol (EG) and poly(ethylene glycol) (PEG) were synthesized and their mechanical properties were evaluated along with shape memory function. In this investigation PEG with different mole ratio and molecular weight was used in order to prepare copolyesters. Experimental results showed that the strain at break, and notched Izod impact strength increased as the PEG content increased. Shape retention rate decreased slightly as the PEG is introduced, however, shape recovery rate increased as the PEG content increased. Overall shape retention rate decreased, whereas, shape recovery rate increased as the molecular weight of PEG increased. Thus, by adjusting the PEG molecular weight and mole ratio, it is possible to obtain copolyesters with excellent mechanical properties and good shape memory function.

Keywords

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