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首页> 外文期刊>Journal of Applied Polymer Science >In Situ Study on Kinetic Behavior during Asymmetric Membrane Formation via Phase Inversion Process Using Raman Spectroscopy
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In Situ Study on Kinetic Behavior during Asymmetric Membrane Formation via Phase Inversion Process Using Raman Spectroscopy

机译：拉曼光谱法通过相转化法研究不对称膜形成过程中的动力学行为

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摘要

Asymmetric membrane formation has been studied by using an in situ analysis developed with a Micro Raman spectroscopy, which emphasizes kinetic aspects of the phase inversion process. Changes in composition with time was successfully measured on the gelation bath-side as well as inside the precipitated phase for the polymer/solventonsolvent system of polysulfone/1-methyl-2-pyrrolidinone/ethanol. The results shows that resulting relative mass transfer rates of solvent and nonsolvent during the phase inversion process strongly influence the final membrane morphologies. In addition, ternary compositions at which phase separation initiates were explored by analyzing the coagulation front.
机译：通过使用Micro Raman光谱学开发的原位分析研究了不对称膜的形成，该分析强调了相转化过程的动力学方面。在聚砜/ 1-甲基-2-吡咯烷酮/乙醇的聚合物/溶剂/非溶剂体系中，成功地测量了在凝胶浴一侧以及沉淀相内部的组成随时间的变化。结果表明，在相转化过程中，溶剂和非溶剂的相对传质速率强烈影响最终的膜形态。另外，通过分析凝结前沿来探索相分离开始的三元组成。

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