The Permeation of Water through Industrial Membrane Systems

该项目旨在了解水通过商业上相关的非多孔聚合物膜的渗透。将在玻璃化转变温度附近研究渗透率、溶解度和扩散率，以阐明在此转变过程中发生的自由体积的变化。由各向异性溶胀引起的非线性浓度梯度将使用新型叠层膜系统来探索。用傅里叶变换红外光谱和核磁共振对水的团聚性进行了评价。研究结果将被用来建立一个新的水渗透唯象模型，可供工程师在工业膜系统设计中直接使用。

This project aims to understand the permeation of water through commercially relevant non-porous polymeric membranes. Permeation, solubility and diffusivity will be studied in the vicinity of the glass transition temperature to elucidate the changes in free volume that occur through this transition. Non-linear concentration gradients due to anisotropic swelling will be probed using novel laminated membrane systems. Water clustering will be evaluated by Fourier transform infrared spectroscopy and nuclear magnetic resonance. Results are proposed to be used to build a new phenomenological model of water permeation that can be used directly by engineers in the design of industrial membrane systems.