Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

A Study on Preparation of Polyesteramide from Oligoester and Oligoamide

올리고에스테르와 올리고아미드로부터 폴리에스테르아미드의 합성에 관한 연구

  • Jo, Sun-Chae (Dept. of Textile Eng. College of Eng., Chonbug Nayional Univ, Chonju Korea) ;
  • Choe, Jae-Ho (Dept. of Textile Eng. College of Eng., Chonbug Nayional Univ, Chonju Korea) ;
  • An, Jong-Yeol (Dept. of Textile Eng. College of Eng., Chonbug Nayional Univ, Chonju Korea) ;
  • On, Jae-Geun (Dept. of Textile Eng. College of Eng., Chonbug Nayional Univ, Chonju Korea)
  • 조순채 (전북대학교 공과대학 섬유공학과) ;
  • 최재호 (전북대학교 공과대학 섬유공학과) ;
  • 안종열 (전북대학교 공과대학 섬유공학과) ;
  • 온재근 (전북대학교 공과대학 섬유공학과)
  • Published : 1986.04.01

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Abstract

Polyesteramide(PEA) was prepared by the polymerization of oligoester(OE) with oligoamide(OA). Oligoester was made by reaction of terephthalic acid(TPA) with ethylene glycol(EG), oligoamide by polymerizaton of 6-aminocaprolc acid. PEA was characterized by DSC, IR spectrophotometer, flow tester and the analysis of amino group. The results are summarized as follows. Melting point decreased with the increase of oligoamide of PEA polymers, while amino end-group increased. Glass transition temperature, melt-viscosity and ratio of aromatic ester to aliphatic ester content decreased with the increase of oligoamide of PEA polymers till 50%, but increased thereafter. Differences of ester content between oligomer mixtures and PEA polymers increased with oligoamide molar fraction till 50%, but increased thereafter. PEA of 50% oligoamide has the least value of(r). We can infer that ester-amide interchange occurs during polymerization of oligomers, from the fact of decrease of the ratio(r) of aromatic ester to aliphatic ester.

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