Thermoanalytical and spectroscopic study of poly(vinyl pyrrolidone) poly(styrene-co-vinyl phenol) blends

被引：38
|
作者：
Prinos, A [1 ]
Dompros, A [1 ]
Panayiotou, C [1 ]
机构：
[1] Univ Thessaloniki, Dept Chem Engn, GR-54006 Thessalonika, Greece
来源：
POLYMER | 1998年 / 39卷 / 14期
关键词：
polymer blends; complexation; hydrogen bonding;
D O I：
10.1016/S0032-3861(97)10085-4
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In the present study a series of poly(vinyl pyrrolidone) (PVP) blends with a series of styrene-vinyl phenol copolymers (SVP) have been prepared and studied. Copolymers with a vinyl phenol content greater than 4 mol% show complete miscibility with PVP over the whole blend composition range. Copolymers containing more than 25 mol% vinyl phenol form complexes with PVP, which precipitate in solution with a common solvent. The miscibility was verified both by visual inspection of the blends and by differential scanning calorimetry measurements, which showed a single glass transition temperature (T-g) throughout the whole composition range. Unusually large positive deviations from linearity were observed in the T-g versus composition diagrams of some blends. The extensive hydrogen bonding interactions between the mixed polymers were studied by FTi.r. spectroscopy. (C) 1998 Elsevier Science Ltd. All rights reserved.
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页码：3011 / 3016
页数：6
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