Novel mixed-matrix membranes based on polyvinyl alcohol modified by carboxyfullerene for pervaporation dehydration
Novel mixed-matrix membranes based on polyvinyl alcohol modified by carboxyfullerene for pervaporation dehydration
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DOI：
10.1016/j.seppur.2018.04.052
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发表时间：
2018-10
影响因子：
8.6
通讯作者：
A. Penkova;M. Dmitrenko;Nadezhda A. Savon;A. Missyul;Anton S. Mazur;A. Kuzminova;A. Zolotarev;
中科院分区：
文献类型：
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作者：
A. Penkova;M. Dmitrenko;Nadezhda A. Savon;A. Missyul;Anton S. Mazur;A. Kuzminova;A. Zolotarev;
开发了聚乙烯醇及其与羧基富勒烯复合的新型混合基质膜。羧基富勒烯同时用作聚乙烯醇的改性剂和交联剂。所开发的复合材料的结构性能进行了研究，通过核磁共振，X-射线衍射分析，扫描电子显微镜，和吸附实验。通过热重分析和差示扫描量热法研究了其热性能和稳定性。通过测量水的接触角来研究表面特征。以乙醇-水混合物（4.4-90 wt.%）为渗透汽化介质，研究了所制备膜的传输性能进料中的水）在不同温度（22、35、50 °C）下。所有膜对水都是选择性的。PVA-羧基富勒烯（3.5wt.%）的传输性能最佳。含有催化剂对甲苯磺酸的膜。
Novel mixed-matrix membranes based on polyvinyl alcohol and its composites with carboxyfullerene were developed. Carboxyfullerene was simultaneously used as a modifier and a cross-linker for polyvinyl alcohol. The structural properties of the developed composites were studied by nuclear magnetic resonance, X-ray diffraction analysis, scanning electron microscopy, and sorption experiments. Thermal properties and stability were investigated by thermogravimetric analysis and differential scanning calorimetry. Surface features were studied by measuring the contact angles by water. The transport properties of the developed membranes were studied in ethanol-water mixtures separation by pervaporation (4.4–90 wt.% water in the feed) at different temperatures (22, 35, 50 °C). All membranes were selective with respect to water. The optimal transport properties were obtained for the PVA-carboxyfullerene (3.5 wt.%) membranes containing catalyst p-toluenesulfonic acid.