Article
  • Effect of Chemical Structure on Crystallization Behavior in Random Copolymers
  • Yoo HY, Kim SW, Okui N
  • 랜덤 공중합체의 화학구조가 결정화거동에 미치는 효과
  • 유희열, 김상욱, Okui N
Abstract
The effects of chemical structure on crystallization behavior in poly(ethylene terephthalate-co- 1,4-cyclohexylene dimethylene terephthalata), P(ET-CT) copolymars were investigated by DSC analysis. The melting temperature, crystallinity and crystallization rate in the copolymers decreased with an increase of the copolymer composition. However, the copolymer of 34 mole % CT was obseryed not to crystallize. Such crystallization behavior in the random copolymers could by discussed sucessfully with the critical crystallizable sequence length based on the averaged sequence. Non-crystal-lizability of the copolymer containing 34 mol % CT coo]d be explained with its average sequence length shorter than the critical crystallizable sequence length.

에틸렌 테레프탈레이트-1,4-시클로헥실렌 디메틴렌 테레프탈레이트 공증합체, p(ET-CT)의 화학구조가 결정화 거동에 미치는 효과를 DSC 분석을 통하여 조사하였다. 공중합체의 용융온도, 결정화도 및 결정화 속도는 공중합 조건이 증가됨에 따라 감소하였고 34몰%의 CT조성에서는 결정화가 진행되지 않아서 이들 특성치를 관측할 수 없었다. 이리한 랜덤 공중합체의 결정화 특성을 평균 연쇄에 근거한 임계 결정성 연쇄 길이(the critical crystallizable sequence length)를 통하여 해결할 수 있었다. 34몰%의 CT조성을 갖는 공중합체의 비결정성은, 평균 연쇄 길이가 임계 결정성 연쇄길이보다 짧기 때문인 것으로 설명할 수 있었다.

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1993; 17(6): 630-636

    Published online Nov 25, 1993