CONFORMATION OF POLY(ETHYLENE GLYCOL) POLYMERS AT THE SILICA WATER INTERFACE - A MICROCALORIMETRIC STUDY

被引：83

作者：

TRENS, P ^{[1
]}

DENOYEL, R ^{[1
]}

机构：

[1] CTR THERMODYNAM & MICROCALORIMETRIE,26 RUE 141 RIA,F-13003 MARSEILLE,FRANCE

来源：

LANGMUIR | 1993年 / 9卷 / 02期

关键词：

D O I：

10.1021/la00026a026

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of a set of poly(ethylene glycol) polymers on a macroporous silica has been studied by microcalorimetry. The enthalpy of displacement of water by the polymer is weak (-3 kJ/mol of segment), and the behavior of this system seems to be close to equilibrium conditions, making the calculation of the fraction p of bounded segments possible in a rigourous manner. The evolution of p with molecular weight or coverage is in qualitative agreement with the Scheutjens and Fleer model.

引用

页码：519 / 522

页数：4

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