한국섬유공학회지 (Textile Science and Engineering)

  • 제42권4호
  • /
  • Pages.217-227
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  • 2005
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  • 1225-1089(pISSN)
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  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

PTT, PBT, PBN 및 폴리테트라메틸렌에테르글리콜 구조를 갖는 세그먼트화 블록 코폴리에테르에스터 고무탄성체의 합성과 물성(I) -합성과 열적성질-

Synthesis and Properties of Segmented Block Copolyetherester Elastomers Based on PTT, PBT, PBN and Poly(tetramethylene ether glycol) (I) -Synthesis and Thermal Properties-

  • 백두현 (충남대학교 공과대학 섬유공학과) ;
  • 김해영 (충남대학교 공과대학 섬유공학과)
  • Baik, Doo-Hyun (Department of Textile Engineering, Chungnam National University) ;
  • Kim, Hae-Young (Department of Textile Engineering, Chungnam National University)
  • 발행 : 2005.08.01
⟨ 이전 논문 다음 논문 ⟩

초록

Segmented block copolyetheresters having three kinds of hard segments, i.e., poly(trimethylene terephthalate) (3GT), poly(butylene terephthalate) (4GT), poly(butylene naphthalate) (4GN) combined with poly(tetramethylene ether glycol) (PTMG) as a part of soft segment were synthesized with various hard segment contents. The number average molecular weights of PTMG selected were 1000, 2000, and 2900. The effects of hard segment content (HSC) and hard segment length (HSL) on the thermal properties of copolyetheresters were studied. Melting temperature $(T_m)$ was found to be a function of HSL for all the copolymers examined. Even at the very short HSL, 3GT and 4GN showed relatively high $T_m\;while\;T_m$ of 4GT decreased considerably. The 3GT hard segment showed highest hard segment crystallinity among the three, which implied that 3GT copolyetheresters had higher degree of phase separation and more stable crystalline phase in the copolyetherester elastomer than 4GT and 4GN.

키워드

참고문헌

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