Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Polyarylate-Nylon 6 Block Copolymers : Synthesis and Its Miscibility in Binary Blends with Polyarylate or Nylon 6 Homopolymer

폴리아릴레이트-나일론 6 블록공중합체 : 합성 및 폴리아릴레이트 혹은 나일론 6 단일중합체와의 상용성

  • Ahn, Tae-Oan (Dept. of Chemical Technology, Seoul National University) ;
  • Lee, Suk-Min (Dept. of Chemical Technology, Seoul National University) ;
  • Jeong, Han-Mo (Dept. of Chemistry, University of Ulsan) ;
  • Lee, Sang-Won (Dept. of Chemical Engineering, Soong Sil University)
  • Received : 1993.02.02
  • Accepted : 1993.03.15
  • Published : 1993.05.01
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Abstract

Polyarylate(PAR)-nylon 6 block copolymers of various block lengths were prepared by the anionic polymerization of ${\varepsilon}$-caprolactam using the polymeric activator from hydroxy-difuncrtional PAR and toluene diisocyanate. Phase separated morphology of PAR-nylon 6 block copolymer was suggerted from the thermal properties measured by differential scanning calorometry(d.s.c.). Partial miscbility between PAR block and nylon 6 block of the block copolymers was more evident at shorter length of constituent blocks. In binary blends of PAR-nylon 6 block copolymer with PAR or nylon 6 homopolymer, molecular-level mixing of homopolymers with corresponding blocks of block copolymer was supposed from the thermal properties measured by d.s.c..

Hydroxy-difunctional polyarylate(PAR) 올리고머와 toluene diisocyanate를 반응시켜 합성한 고분자 활성체를 사용하여 ${\varepsilon}$-caprolactam을 음이온 중합하여 다양한 블록길이의 PAR-nylon 6 블록공중합체들을 합성하였다. 합성한 블록공중합체들의 열적성질을 differential scanning calorimeter(d.s.c.)로 측정한 결과, 블록공중합체를 구성하는 PAR 블록과 nylon 6 블록은 부분적 상용성을 가졌으며, 그 정도는 블록의 길이가 짧을수록 컸다. PAR-nylon 6 블록공중합체와 PAR 혹은 nylon 6 homopolymer와의 이원블렌드에서 PAR homopolymer와 PAR 블록, nylon 6 homopolymer와 nylon 6 블록 사이의 분자수준의 섞임을 시사하는 거동을 d.s.c.로 관찰할 수 있었다.

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Acknowledgement

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