INTERPENETRATING POLYMER NETWORKS OF POLY(CARBONATE-URETHANE) AND POLYSTYRENE

被引：10
|
作者：
ZHOU, PG [1 ]
FRISCH, HL [1 ]
机构：
[1] SUNY ALBANY,DEPT CHEM,ALBANY,NY 12222
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1992年 / 30卷 / 05期
关键词：
IPNS; POLY(URETHANE CARBONATE); POLYSTYRENE; MECHANICAL AND THERMAL PROPERTIES;
D O I：
10.1002/pola.1992.080300520
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Simultaneous two-component interpenetrating polymer networks (IPN's), pseudo IPN's, and linear blends of urethane-containing aliphatic polycarbonate (PCU) and polystyrene (PS) have been synthesized and characterized. The simultaneous full IPN's of PCU and PS had one T(g) only at compositions above 50 wt % PCU, as determined by DSC and DMA. The single phase morphology in the one T(g) region was confirmed by transmission electron microscopy (TEM). However, the pseudo IPN's and linear blends of PCU and PS exhibited multiple (melting and glass) transitions by DSC measurements and phase separation was observed by TEM over the whole composition range. The full IPN's exhibited a maximum in ultimate mechanical properties at an intermediate composition. Superior solvent resistance as well as better thermal stability was shown by the IPN's as compared to the pseudo IPN's, linear blends, and pure crosslinked components.
引用
收藏
页码：887 / 893
页数：7
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