Article
  • Kinetic Study and Fiber Properties Changes on Solid State Polymerization of a Copolyester Derived from 5-Acetoxyphenyl -4'-Acetoxybenzoate and Isophthalic Acid
  • Jin JI, Lee SH, Park HJ
  • 4-아세톡시벤조산 4'-아세톡시페닐과 이소프탈산으로부터 합성한 공중합체의 고상중합 및 섬유성질의 변화
  • 진정일, 이석현, 박호진
Abstract
Solid state polymerization of a wholly aromatic polyester fiber was studied by thermogravimetric analysis(TGA ). The weight loss during the thermal treatment came mainly by the evolution of acetic acid produced by the reaction between two reacting chain ends. Solid state polymerization was proved to be 2nd order reaction with the activation energy of about 100KJ/ eq. It. was found that preheat-treatment not only prevented the sticking of the fibers but also enhanced rate of reaction and also the extent of solid state polymerization. As spun fibers already showed the physical properties comparable to those of PET even though the spinning conditions were not optimized. Fiber properties were greatly enhanced by the thermal treatment. The pre-heat treated fiber showed higher tenacity than directly heat treated one.

전방향족 폴리에스테르 섬유의 고상중합을 열중량분석법(TGA)으로 연구하였다. 열처리중의감량은 말단기간의 반응으로 생기는 초산의 생성때문임을 알았으며, 고상중합은 2차반응으로 활성화 에너지가 약 100KJ/ eq이었다. 최종 열처리전에 선처리를 함으로써 섬유의 융착을 방지할 수 있을 뿐 아니라 고상중합속도 및 고상중합율을 증가시킬 수 있음을 알았다. 섬유의 방사 조건이 최적 조건이 되지 못한 이유로 섬유의 물성이 아주 우수하지는 않지만, 열처리 전에 이미 PET 수준은 되었고 열처리에 의해 큰 물성의 향상을 보여주었다. 또한 열처리를 단계적으로 하였을 때 더 큰 물성의 향상을 보였다.

Keywords:

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 1989; 13(7): 563-573

    Published online Aug 25, 1989

  • 10.7317/pk.
  • Received on Nov 30, -0001
  • Revised on Nov 30, -0001
  • Accepted on Nov 30, -0001

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