Performance of PDMS membranes in pervaporation: Effect of silicalite fillers and comparison with SBS membranes
Performance of PDMS membranes in pervaporation: Effect of silicalite fillers and comparison with SBS membranes
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DOI：
10.1016/j.jcis.2010.02.023
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发表时间：
2010-06-01
影响因子：
9.9
通讯作者：
Van der Bruggen, B.
中科院分区：
文献类型：
--
作者：
Dobrak, A.;Figoli, A.;Van der Bruggen, B.
通过浓度和温度对从乙醇/水混合物中去除乙醇的膜性能的影响来测试实验室制造的硅沸石填充的PDMS膜这使得可以研究溶液扩散模型在传输机制描述中的适用性通过改变进料中的乙醇浓度和温度进行实验将两种类型的填料纳入PDMS网络商业沸石硅沸石（CBV 3002）和实验室制造的胶体硅沸石-1然后将获得的结果与收集的未填充的数据进行比较PDMS 膜检查填料掺入的影响此外，还与基于新型嵌段共聚物的多孔致密 SBS 膜进行了比较。结果发现，溶液扩散模型很好地代表了乙醇通过填充和未填充的 PDMS 膜的传输，而由于膨胀效应，水通量并不遵循该模型。填料的掺入增加了膜的稳定性并提高了选择性。以致密结构为特征的 SBS 膜的性能与填充的 PDMS 膜的性能相似。 (C) 2010 Elsevier Inc. 保留所有权利。
Laboratory-made silicalite filled PDMS membranes were tested by means of concentration and temperature influence on the membrane performance in removal of ethanol from ethanol/water mixtures This allowed studying the applicability of solution-diffusion model in the transport mechanism description Experiments were performed by varying the ethanol concentration in the feed and temperature Two types of fillers were incorporated into the PDMS network commercial zeolite silicalite (CBV 3002) and laboratory-made colloidal silicalite-1 Obtained results were then compared with data gathered for unfilled PDMS membranes to examine the effect of fillers incorporation Moreover, the comparison with novel block co-polymer based porous and dense SBS membranes was done. It was found that the solution-diffusion model was a good representation of ethanol transport through both filled and unfilled PDMS membranes, whereas the water flux did not obey this model due to the swelling effects Incorporation of the fillers increased membrane stability and improved the selectivity Performance of the SBS membranes characterized by a dense structure was found to be similar to the performance of filled PDMS membranes. (C) 2010 Elsevier Inc. All rights reserved.