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Solution Polymerization of Acrylonitrile Using a Cosolvent System (DMSO/TBA)

  • Textile Coloration and Finishing
  • Abbr : Text. Color. and Finish.
  • 2003, 15(3), pp.1-5
  • Publisher : The Korean Society Of Dyers And Finishers
  • Research Area : Engineering > Fiber Engineering > Dyeing Engineering

Sung Ok SOHN 1 Younga Han 1 최경식 2 KimBum-Sik 3 Byung Chul Ji 1

1경북대학교
2경일대학교
3Kent School

Accredited

ABSTRACT

was solution-polymerized in dimethyl sulfoxide(DMSO) and tertiary butyl alcohol(TBA) at 30, 40, 50℃ 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. Through a polymerization of AN in DMSO at 30℃, PAN having viscosity-average molecular weight(Mv) 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(VDMSO/ VTBA). The simultaneous process of gelation and phase separation of long chain molecules may explain the in-situ formation of PAN fibers during polymerization.

Citation status

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