Article
Phase Behavior in Copolymer Blends of Poly(p-chlorostyrene-co-o-chlorostyrene) and Phenylsulfonylated Poly(2,6-dimethyl-1,4-phenylene oxide)
Journal of Polymer Science: Part B: Polymer Physics
(1994)
Abstract
The miscibility of random copolymers of o-chlorostyrene and p -chlorostyrene [ P (oC1Stco-
pC1St)] with partially phenylsulfonylated poly (2,6-dimethyl-1,4-phenylenoex ide)
( SPPO) copolymers has been studied, using differential scanning calorimetry (DSC) to
establish Tg behavior. It already has been established that the isomeric effect of the chlorine
substitution on miscibility is large. Thus the para-chloro-substituted styrenic homopolymer
is miscible with all SPPOs containing more than - 5 mol % phenylsulfonylation, whereas
the ortho-chloro-substituted homopolymer is immiscible with the entire range of SPPO
copolymer compositions (and also with the respective homopolymers) . As a result of this
asymmetric behavior of the homopolymers, the width of the window of miscibility in blends
now investigated containing copolymers with highpClSt content and SPPO is much greater
than in the corresponding blends containing copolymers with large mole fraction of oC1St.
These differences are reflected in the corresponding X parameters calculated from analysis
of the data. It was also found that the miscibility is temperature dependent and that the
regime in the copolymer-copolymer composition plane shrank as the equilibrium temperature
increased, results indicative of LCST behavior.
Keywords
- Miscibility,
- copolymers,
- isomeric effects,
- halostyrenes,
- phenylene oxide,
- polymers
Disciplines
Publication Date
1994
Citation Information
William MacKnight, R. Vukovic, G. Bogdanic, Vjera Kuresevic, et al.. "Phase Behavior in Copolymer Blends of Poly(p-chlorostyrene-co-o-chlorostyrene) and Phenylsulfonylated Poly(2,6-dimethyl-1,4-phenylene oxide)" Journal of Polymer Science: Part B: Polymer Physics Vol. 32 (1994) p. 1079 - 1087 Available at: http://works.bepress.com/william_macknight/284/