Article
  • Melting and Crystallization Behavior of Poly(ester-imide)s
  • Park LS, Whang JS, Lee DC, Ha KR
  • 폴리에스테르이미드 공중합체의 용융 및 결정화 거동
  • 박이순, 황진상, 이동찬, 하기룡
Abstract
Poly(butylene terephthalate-imide), PBI copolymers were synthesized by two-stage reaction, esterification and polycondensation. DSC was employed to investigate the changes of Tm's and isothermal crystallization kinetics. Tm's decreased in accordance with the Flory's equation as the content of imide repeat unit in the copolymer increased. Tm0 and ΔHu from Flory plot were 224.8℃ and 53.1 J/g, respectively. In isothermal crystallization, Avrami exponent n increased and K decreased as the content of imide repeat unit in the copolymer increased.

에스테르 교환반응과 중축합 반응의 두 단계 반응으로 합성된 poly(butylene terephthalate-imide)s, PBI 공중합체들의 조성에 따른 용융 온도의 변화와 등온 결정화 거동을 DSC로 고찰하였다. 공중합체내 이미드 반복단위의 함량이 증가할수록 용융 온도(Tm)는 Flory's equation에 따른 감소를 보였으며 Flory Plot으로부터 구한 Tm0는 224.8℃, ΔHu는 53.1J/g이었다. Avrami equation으로 고찰된 등온 결정화 거동에서 이미드 함량이 증가할수록 Avrami exponent n은 증가하였으며 결정성장 속도상수 K는 감소하였다.

Keywords: melting; crystallization kinetics; Flory plot; Avrami equation

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1995; 19(4): 488-494

    Published online Jul 25, 1995