Investigation of the interpolymer complex between hydroxypropyl cellulose and maleic acid-styrene copolymer, 1 - Dilute solutions studies

被引：22

作者：

Bumbu, GG

Vasile, C

Eckelt, J

Wolf, BA

机构：

[1] Univ Mainz, Inst Phys Chem, D-55099 Mainz, Germany

[2] Petru Poni Inst Macromol Chem, RO-700487 Iasi, Romania

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 2004年 / 205卷 / 14期

关键词：

hydroxypropyl cellulose; interpolymer complex; maleic acid-styrene copolymer; phase behavior; thermodynamics;

D O I：

10.1002/macp.200400253

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The hydrogen bonding-interpolymer association of hydroxypropyl cellulose (HPC) with maleic acid-styrene (MAc-S) copolymer has been investigated in dilute aqueous solution by viscometry, turbidimetry and potentiometry. At a mixing ratio between MAc-S and HPC of 10:90, the solution exhibits a phase separation upon heating, while for other mixing ratio no phase separation could be detected. The stability of the interpolymer complex (IPC) increases as the temperature rises. The stoichiometry of the IPC, in mole units, was estimated as being MAc-S:HPC = 5:2. The thermodynamic functions (enthalpy and entropy) of the complexation process have been determined.

引用

页码：1869 / 1876

页数：8

共 52 条

[41] Mechanism of medicine release from solid dispersion composed of poly(ethylene oxide) carboxyvinylpolymer interpolymer complex and pH effect on medicine release [J].