Diffusion of water and acetone into poly(vinyl alcohol)-clay nanocomposites using ATR-FTIR

被引：64

作者：

Döppers, LM ^{[1
]}

Breen, C ^{[1
]}

Sammon, C ^{[1
]}

机构：

[1] Sheffield Hallam Univ, Mat Res Inst, Sheffield S1 1WB, S Yorkshire, England

来源：

VIBRATIONAL SPECTROSCOPY | 2004年 / 35卷 / 1-2期

关键词：

polymer; nanocomposite; clay; ATR-FTIR; diffusion; PVOH;

D O I：

10.1016/j.vibspec.2003.11.008

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Polymer-clay nanocomposites have been prepared by solution intercalation of poly(vinyl alcohol) (PVOH) into Na+ Montmorillonite (Na+ Cloisite(R)). XRD has been used to determine the dispersion of the individual clay platelets in the PVOH matrix. ATR-FTIR has been used to perform in situ diffusion experiments of water and acetone into nanocomposite films. The data has been compared to that obtained from the pure polymers to evaluate the barrier properties of the nanocomposites. The dominant process during water uptake was polymer solvation so the clay loading exerted little influence on the uptake rate. In contrast, the rate of diffusion of acetone was significantly reduced as the clay loading in the nanocomposite increased. (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：27 / 32

页数：6

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