INTERFACIAL ADSORPTION OF SOLVENTS IN A POROUS POLYMER RESIN - A C-13 SPIN-ECHO AND ESR STUDY

被引：6

作者：

CHACHATY, C ^{[1
]}

KORB, JP ^{[1
]}

机构：

[1] ECOLE POLYTECH,PHYS MAT CONDENSEE LAB,F-91128 PALAISEAU,FRANCE

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1991年 / 95卷 / 16期

关键词：

D O I：

10.1021/j100169a002

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Several spectroscopic methods have evidenced a fractal distribution of pore sizes in a cross-linked resin of poly(4-vinylpyridine). In this system, the nuclear relaxation of solvents is interpretable by an exchange between the pores and an outer adsorption shell. This model is supported by two independent determinations of the overall fraction of adsorbed ethanol: the fits of the solvent C-13 spin-echo decay and the ESR concentration measurements of polymer radicals selectively formed at contact with the solvent. The latter appears to be an efficient model-independent approach to estimate the extent of solvent penetration into the polymer network.

引用

页码：6058 / 6060

页数：3

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