標題: Miscibility in blends of liquid crystalline poly(p-oxybenzoate-co-p-phenyleneisophthalate) and polyarylate
作者: Wei, KH
Tyan, HL
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: miscibility;liquid crystalline poly(p-oxybenzoate-co-p-phenyleneisophthalate);differential scanning calorimetry
公開日期: 6-Jun-1998
摘要: The miscibility of liquid crystalline poly(p-oxybenzoate-co-p-phenyleneisophthalate) (HIQ35) and polyarylate (PAr) coprecipitated from a mixed solvent of phenol/tetrachloroethane was investigated with differential scanning calorimetry. It was found that the amorphous phase of HIQ35 and PAr formed a partially miscible blend at low concentration of HIQ35. No measurable interaction between HIQ35 and PAr occurred when the weight fraction of HIQ35 was close to or less than that of polyarylate, as evidenced by wide-angle X-ray diffraction results. Upon annealing at 315 degrees C for several minutes, the apparent miscibility of HIQ35 with polyarylate appeared as a result of an initial reaction between the polymers. For longer annealing time, the thermal degradation of HIQ35 joined in the reaction. This reaction or degradation in the blend was confirmed by nuclear magnetic resonance analysis and the intrinsic viscosity measurement of the blend. (C) 1998 John Wiley & Sons, Inc.
URI: http://hdl.handle.net/11536/32563
ISSN: 0021-8995
期刊: JOURNAL OF APPLIED POLYMER SCIENCE
Volume: 68
Issue: 10
起始頁: 1581
結束頁: 1589
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