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Thermally induced phase separation in homogeneous blends of poly(2,6‐dimethyl‐1,4‐phenylene oxide) with poly( o ‐fluorostyrene‐co‐ p ‐chlorostyrene) and with poly( o ‐fluorostyrene‐co‐ o ‐chlorostyrene)
Author(s) -
Vuković R.,
Kureǎević V.,
Karasz F. E.,
Macknight W. J.
Publication year - 1985
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1985.070300127
Subject(s) - materials science , phenylene , annealing (glass) , polymer blend , copolymer , oxide , polymer chemistry , polymer , poly(p phenylene) , phase (matter) , analytical chemistry (journal) , composite material , chemistry , organic chemistry , metallurgy
The phase separation behavior of initially compatible blends of poly(2,6‐dimethyl‐1,4‐phenylene oxide) (PPO) with poly( o ‐fluorostyrene‐co‐ p ‐chlorostyrene) [poly(oFS‐co‐pCIS)] and with poly( o ‐fluorostyrene‐co‐ o ‐chlorostyrene) [poly(oFS‐co‐oCIS)] was studied by DSC. It was found that copolymers of poly(oFS‐co‐pCIS) containing between 15 and 62 mol % pCIS have shown no phase separation after annealing at temperatures up to 320°C. It was also observed that blends containing this copolymer with 74 mol % pCIS show phase separation at 250°C, which depended on blend composition. Additionally, all PPO/poly(oFS‐co‐oCIS) blends exhibit phase separation after annealing to a temperature of 230°C. Thermal degradation of the polymer blends was not observed at the temperatures studied.