한국섬유공학회지 (Textile Science and Engineering)

  • 제36권7호
  • /
  • Pages.501-510
  • /
  • 1999
  • /
  • 1225-1089(pISSN)
  • /
  • 2288-6419(eISSN)
한국섬유공학회 (The Korean Fiber Society)
권호 표지

폴리에틸렌 테레프탈레이트와 폴리트리메틸렌 테레프탈레이트의 공중합체 합성과 특성 분석(I) - 중합조건의 영향 -

Synthesis and Characterization Poly(ethylene terephtahalte) and Poly (trimethylene terephtalate) Copolymer(I) -Effect of Reaction Condition-

  • 박양호 (영남대학교 공과대학 화학공학 및 공업화학부) ;
  • 노석균 (영남대학교 공과대학 화학공학 및 공업화학부) ;
  • 김준호 (영남대학교 공과대학 섬유학부)
  • 발행 : 1999.07.01

⟨ 이전 논문 다음 논문 ⟩

초록

Random copolyesters were prepared from poly (ethylene terephtalate) (PET) oligomer and 1,3-propanediol (PG) by polycondensation procedure using varying amounts of PET oligomer and PG. Copolymer compositions have been identified by $^1$H-NMR spectroscopy. The compositions of the copolymers can be conveniently controlled by manipulation of the reaction conditions. Three hour polymerization at 26$0^{\circ}C$ generated the copolymers with the highest intrinsic viscosity. Investigation of the thermal properties of the obtained polymers via DSC showed that the copolyester became completely amorphous when the composition of PG ranged from 30 to 65%. Sequence information of the produced copolyesters were obtained from $^{13}C$-NMR analysis. The ET-TP-ET and TT-TP-TT blocks could be distinguished from the unsymmetrical diester sequence ET-TP-TT. The sequence analysis indicates that all the studied copolymers have randomly distributed sequence structure.

키워드

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