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논문 기본 정보

자료유형
학술저널
저자정보
Hu, Seung-Woo (Department of Textile Engineering, Hanyang University) Myung, Hee-Soo (Department of Textile Engineering, Hanyang University) Bae, Jong-Seok (Department of Textile Engineering, Hanyang University) Yoo, Eui-Sang (Department of Textile Engineering, Hanyang University) Im, Seung-Soon (Department of Textile Engineering, Hanyang University)
저널정보
한국섬유공학회 Fibers and Polymers Fibers and polymers 제1권 제2호
발행연도
2000.1
수록면
76 - 82 (7page)

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초록· 키워드

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A series of random copolyesters having various compositions were synthesized by bulk copolymerization of bishydroxyethyl terephthalate (BHET) with 1,4-cyclohexane dimethanol (CHDM) or dimethyl isophthalate (DMI). CHDM and DMI content was less than 10 wt%. For the synthesized copolyesters, isothermal crystallization rate, melting behavior, and equilibrium temperature were investigated by calorimetry and by Avrami and Hoffman-Weeks equation. Crystalline lattice and morphology were studied by WAXD and SEM. Regardless of the composition, the value of the Avrami exponent was about 3, which indicates that crystallization mechanism of the copolyester was similar to those of PET homopolymer. Incoporation of CHDM or DMI units in PET backbone decreased the crystallization rate of the copolyesters. Surface free energy of copolyesters was evaluated using the newly proposed equation. The value of surface free energy was about 189$\times$$10^{-6}$/$J^{2}$/$m^{4}$ regardless of comonomer contents. This result is in good agreement with that of PET homopolymer.

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