• Effect of Phosphate on the Thermal Properties of Poly(ethylene naphthalate)/Poly(ethylene terephthalate)Blends
  • Han K, Kim W, Hwang SS, Kang HJ
  • 인산염이 Poly(ethylene naphthalate)/Poly(ethylene terephthalate) 블렌드의 열적 특성에 미치는 영향
  • 한규일, 김환기, 황승상, 강호종
Abstract
The effect of organic phosphate as a transesterification inhibitor on transesterification reaction in poly(ethylene 2,6-naphthalate)/poly(ethylene terephthalate)[PEN/PET] blends has been studied. Thermal properties of PEN/PET blends were also investigated as a function of processing conditions and the existence of organic phosphate. The level of transesterification reaction in PEN/PET blends decreased with the addition of organic phosphate as small as 03. wt%. Transesterification reaction in PEN/PET blends started at 220 ℃ and this temperature did not change by adding organic phosphate. The transesterification reaction caused the decrease of melting temperature and the increase of glass transition temperature and cold crystallization temperature of the PEN/PET blends. Addign organic phosphate as a transesterification inhibitor and a nucleating agent for crystallization resulted in increase of melting temperature and decrease of glass transition temperature in PEN/PET blends.

상호에스테르 교환반응 억지제로 사용된 인산염이 poly(ethylene 2,6-naphthalate)/poly(ethylene terephthalate) [PEN/PET] 블렌드의 상호스케르 교환반응에 미치는 영향과 이에 따른 블렌드의 열적특성 변화에 대하여 살펴보았다. 0.3 wt% 의 인산염 첨가에 따라 상호에스테르 교환반응이 현저히 줄어듦을 확인할 수 있었다. PEN/PET 상호에스테르 교환반응이 발현되는 최열처리 온도에는 변화를 주지 못함을 알 수 있었다. 상호에스테르 교환반응의 발현은 PEN/PET 블렌드의 용융온도의 감소와 유리전이온도 및 cold crystallization온도의 증가를 초래하며. 첨가된 인산염은 상호에스테르 교환반응 억지제와 결정화 기핵제로 작용하여 용융온도의 증가와 유리전이 온도 및 cold crystallization 온도를 감소시키는 역할을 함을 알 수 있었다.

Keywords: poly(ethylene terephthalate); poly(ethylene 2,6-naphthalate); blend; organic phosphate; transesterification

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
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This Article

  • 1999; 23(2): 255-262

    Published online Mar 25, 1999