Textile Coloration and Finishing (한국염색가공학회지)

The Korean Society of Dyers and Finishers (한국염색가공학회)
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Solution Polymerization of Acrylonitrile Using a Cosolvent System (DMSO/TBA)

혼합 용매계 (DMSO/TBA)를 이용한 아크릴로니트릴의 용액 중합

  • 손성옥 (경북대학교 공과대학 염색공학과) ;
  • 한영아 (경북대학교 공과대학 염색공학과) ;
  • 최경식 (경일대학교 공과대학 섬유패션학과) ;
  • ;
  • 지병철 (경북대학교 공과대학 염색공학과)
  • Published : 2003.06.01
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Abstract

Acrylonitrile(AN) was solution-polymerized in dimethyl sulfoxide(DMSO) and tertiary butyl alcohol(TBA) at 30, 40, $50^\circ{C}$ using a low temperature initiator, 2,2'-azobis(2,4-dimethylvaleronitrile) (ADMVN). The low temperature polymerization using ADMVN, DMSO, and TBA is to be successful in obtaining high molecular weight polyacrylonitrile(PAN) with less branches by solution polymerization. Throug a polymerization of AN in DMSO at $30^\circ{C}$, PAN having viscosity-average molecular weight$(M_v)$ of 931,000 was obtained. And then, during AN solution polymerization in DMSO and TBA using a cosolvent system the in-situ formation of microfibrillar structure has been discovered at the cosolvent composition of 24/1$(V_{DMSO}/V_{TBA})$. The simultaneous process of gelation and phase separation of long chain molecules may explain the in-situ formation of PAN fibers during polymerization.

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References

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