Melting and Non-isothermal Crystallization Behaviors of Poly (trimethylene Terephthalate)

폴리(트리메틸렌 테레프탈레이트)의 용융 및 비등온 결정화 거동

  • Kim, Yeong-Ho (Dept. of Textile Eng., College of Eng., Soong-Sil Univ.) ;
  • Kim, Gap-Jin (Dept. of Textile Eng., College of Eng., Soong-Sil Univ.)
  • Published : 1997.12.01

Abstract

Poly(trimethylene terephthalate)(PTMT), which is expected to be used as a new polyester fiber, was polymerized from terephthalic acid and 1,3-propanediol and its basic thermal roperties such as glass transition temperature(Tg), melting temperature(Tm) and non-isothermal crystallization behaviors were investigated by differential scanning calorimetry(DSC). Tg of PTMT was 39.5 ℃, which is much lower than that of PET. The equilibrium melting temperature of 244.1 ℃ was obtained from Hoffman-Weeks plots. Multiple melting curves were observed both in isothermally and non-isothermally crystallized samples. In non-isothermal crystallization, the Aramid exponent of about 2.7 and the activation energy of 165 kl/mol were obtained by using 03awa's modified Aramid equation.

Keywords

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