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Miscibility and phase behaviour in poly(2,6-dimethyl-1,4-phenylene oxide) and poly(fluorostyrene-co-bromostyrene) blends
European Polymer Journal (1988)
  • William MacKnight, University of Massachusetts Amherst
  • R. Vukovic
  • G. Bogdanic
  • Vjera Kuresevic
  • F. E. Karasz
Abstract
Copolymers of or tho (para )fluorostyrene and ortho(para )bromostyrene with a range of copolymer compositions were prepared by free radical polymerization in toluene solution using azobis­(isobutyronitrile). The miscibility and phase behaviour of these copolymers in blends with poly(2,6-dimethyl-l,4-phenylene oxide) (PPO) have been studied by differential scanning calorimetry. Of the four possible copolymer systems, miscibility was observed only for PPO/poly(o-fluorostyrene­co-p-bromostyrene) blends in which the copolymer contains between 11 and 73 mo!% p-bromostyrene. High temperature phase separation in the miscible blends is a function of copolymer composition and of the thermal history. The results can be explained on the basis of the mean field theory of phase behaviour for homopolymer--copolymer systems. 
Keywords
  • Miscibility,
  • Phase Behaviour,
  • Poly(2 6-dimethyl-1 4-phenylene oxide),
  • poly(fluorostyrene-co-bromostyrene),
  • blends
Disciplines
Publication Date
1988
Citation Information
William MacKnight, R. Vukovic, G. Bogdanic, Vjera Kuresevic, et al.. "Miscibility and phase behaviour in poly(2,6-dimethyl-1,4-phenylene oxide) and poly(fluorostyrene-co-bromostyrene) blends" European Polymer Journal Vol. 24 Iss. 2 (1988) p. 123 - 127
Available at: http://works.bepress.com/william_macknight/165/