THERMODYNAMIC CHARACTERIZATION OF INTERPENETRATING POLYMER NETWORKS OF POLY(CARBONATE-URETHANE) AND POLY(METHYL METHACRYLATE)

被引：6

作者：

PRIVALKO, VP ^{[1
]}

AZARENKOV, VP ^{[1
]}

BAIBAK, AV ^{[1
]}

KORSKANOV, VV ^{[1
]}

FRISCH, HL ^{[1
]}

ZHOU, P ^{[1
]}

机构：

[1] SUNY ALBANY,DEPT CHEM,ALBANY,NY 12222

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1994年 / 32卷 / 14期

关键词：

D O I：

10.1002/pola.1994.080321403

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Crosslinked poly(methyl methacrylate) and poly(carbonate-urethane) as well as full interpenetrating network on their base (IPN) were characterized by precise heat capacity measurements in the temperature interval 4.2-450 K. As judged by the positive sign of the excess Gibbs free energy in the whole temperature interval above 30 K, the apparently single-phase state of IPN is thermodynamically unstable; however, its kinetic stability is ensured by permanent chamical crosslinks prohibiting the incipient phase separation. (C) 1994 John Wiley & Sons, Inc.

引用

页码：2625 / 2628

页数：4

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