Miscibility and phase behaviour in blends of poly(p-fluorostyrene) (PpFSt), poly(o-fluorostyrene) (PoFSt), poly(p-chlorostyrene) (PpCISt), poly(o-chlorostyrene) (PoC1St), poly(p-bromostyrene) (PpBrSt) and poly(o-bromostyrene) (PoBrSt) with partially sulfonylated poly(2,6-dimethyl-l,4-phenylene oxide) (SPPO) copolymers [i.e. systems of the type (A),J(CI_rDy),2] have been studied by d.s.c, as a function of temperature and degree of sulfonylation. For all the para-substituted styrene polymers/SPPO blends studied, limited miscibility regimes are found. A miscibility regime is also found for PoFSt/SPPO blends. However, PoC1St and PoBrSt are not miscible with any SPPO. Using the mean-field approach, we have calculated all the pertinent segmental interaction parameters for these blends. In several systems, certain blends have been found to exhibit lower critical solution temperature behaviour
Посилання на статтю:
Miscibility in blends of sulfonylated poly(2,6-dimethyl-1,4-phenylene oxide) (SPPO) with homopolymers of halogen-substituted styrene derivatives / Radivoje Vukovic, Miljenko/ruani6, Grozdana Bogdani6and Vjera Kuresevic // Polymer. – 1993. – Vol 34. – P. 1449-1453.