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Quantitative analysis of polymer dilation during sorption using FTIR-ATR spectroscopy

机译：使用FTIR-ATR光谱法测量聚合物扩张的定量分析

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FTIR-ATR spectroscopy has been used to inspect the diffusion of acetonitrile in two rubbery and one glassy polymers. The same technique has also been used to measure simultaneously polymer dilation during sorption. The solubility and diffusivity results have been compared to the values obtained separately through a gravimetric apparatus, while dilation has been compared to independent measurements performed through the use of a CCD camera. Two thermodynamic models suitable to describe rubbery and glassy systems, respectively, have been considered to verify the possibility to predict the volume dilation of the polymer matrix during sorption, starting from solubility data.
机译：FTIR-ATR光谱已被用于检查乙腈的扩散在橡胶状的两种橡胶和一个玻璃状聚合物中。还用于在吸附过程中使用相同的技术来测量同时聚合物扩张。将溶解度和扩散结果与通过重量装置单独获得的值进行比较，同时将扩张与通过使用CCD相机进行的独立测量进行了比较。已经考虑了两个适合描述橡胶和玻璃状系统的热力学模型，以验证从溶解度数据开始在吸附过程中预测聚合物基质的体积扩张。

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