섬유

critical review of the stabilisation of polyacrylonitrile

  • 출판일1999.03
  • 저자
  • 서지사항
  • 등록일 2016.11.02
  • 조회수 317
the pre-oxidative stabilisation of polyacrylonitrile (pan) is a crucial step in the production of pan-based carbon fibres. much research has been devoted in the 1950s and 1960s towards elucidating the reactions undergone by pan during stabilisation. in the past, the mechanism of stabilisation was quite controversial, with much dispute about crosslinking and cyclisation. now, cyclisation with the formation of six-membered rings seems to have become accepted, though the evidence still remains circumstantial. alternative interpretations of the changes occurring during stabilisation are also discussed. the possibility of base-induced cyclisation in solution is reviewed along with other pre-treatments for speeding up stabilisation. (author abstract) 48 refs
이전글 다음글 목록