羧化聚苯醚/聚(苯乙烯-乙烯吡啶)共混相容性

Miscibility of Carboxylated Poly(phenylene oxide)/ Poly(styrene co vinylpyridine) Blends

用ＤＳＣ、ＤＭＡ研究了羧化聚苯醚（ＣＰＰＯ）／聚（苯乙烯－乙烯吡啶）（ＰＳＶＰ）共混体系的相容性，结果表明，与ＣＰＰＯ／ＰＳ体系相比，乙烯吡啶基的引入大大提高了共混相容性．这主要是由于ＣＰＰＯ中的羧基与ＰＳＶＰ中的吡啶基之间通过质子转移形成的正负离子间的相互作用，推动了两组分分子的均匀混合．

In the paper the miscibility of carboxylated poly(phenylene oxide) (CPPO)/poly(styrene co 4 vinylpyridine) (PSVP) blends was investigated by DSC and DMA. It was found that the CPPO/PSVP blends possessed relatively good miscibility compared with CPPO/PS, and this was attributed to the ion ion interactions resulted from the proton transfer between the carboxylic groups of CPPO and the pyridine groups of PSVP.