Article
  • Characterization of Poly(ether-block-amide)s Prepared from Oligomeric Polyamide 12 via Dispersion Polymerization
  • Kim DH, Lee JH, Kim HJ
  • 분산중합에 의한 폴리아미드 12 올리고머의 제조와 그를 이용한 Poly(ether-block-amide)의 특성
  • 김두현, 이지훈, 김형중
Abstract
Polyamide 12 (PA12) oligomers (oPA1) were prepared by dispersion polymerization of ω-amino carboxylic acid and dibasic acid in a dispersion medium, thermally stable hydrocarbon liquid paraffin, YK-D130 (a step polymerization). The molecular weight and various properties of other oligomeric PAs (oPA2) obtained by bulk polymerization without the medium were compared with those of oPA1s. The oPA1s showed lighter white color and narrower molecular weight distribution than oPA2s at the same molecular weight. Moreover elastomeric poly(ether-block-amide)(PEBA)s were synthesized with oPA1 and oPA2 as hard segments and poly(tetramethylene glycol) (PTMG) as a soft segment. The molecular weight distribution, and mechanical property of the PEBA originated from the both oligomeric PAs were characterized.

열적으로 안정한 탄화수소계 액상 파라핀인 YK-D130을 분산매로 사용하여 ω-amino carboxylic acid와 adipic aicd로부터 폴리아미드 12(PA12) 올리고머(oPA1)를 제조하였으며 이들을 통상의 벌크중합으로 제조되는 비슷한 분자량의 폴리아미드 올리고머(oPA2)로 합성하여 분자량과 기타 특성을 비교하였다. 색도 분석 결과 oPA1이 더 밝은 백색을 나타냈고, GPC 결과로부터 oPA1가 더 좁은 분자량 분포를 보였다. 나아가 oPA1과 oPA2를 hard segment로 하고 poly(tetramethylene glycol)(PTMG)을 soft segment로 하는 탄성의 poly(ether-block-amide)(PEBA)를 합성하였다. 합성된 PEBA의 분자량과 기계적 성질 등을 비교 분석하였다.

Keywords: oligomer; polyamide 12; dispersion medium; ω-amino carboxylic acid; PEBA.

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  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2012; 36(4): 513-518

    Published online Jul 25, 2012

  • Received on Jan 13, 2012
  • Accepted on Mar 2, 2012