Assembly of oriented zeolite monolayers and thin films on polymeric surfaces via hydrogen bonding.
Assembly of oriented zeolite monolayers and thin films on polymeric surfaces via hydrogen bonding.
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DOI：
10.1021/la801879x
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发表时间：
2008-09
期刊：
影响因子：
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通讯作者：
Ming Zhou;X. Liu;Baoquan Zhang;Huiming Zhu
中科院分区：
文献类型：
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作者：
Ming Zhou;X. Liu;Baoquan Zhang;Huiming Zhu
通过氢键在聚环氧乙烷(PEO)、聚乙烯醇(PVA)、壳聚糖和聚甲基丙烯酸甲酯(PMMA)薄膜上人工组装了b取向的微米Silicalite-1晶体单分子膜，大大提高了结合强度，覆盖程度和紧密堆积。手动组装时施加的压力和摩擦时间不影响Silicalite-1单分子膜在玻璃板支撑的聚合物膜上的结合强度。这种手工组装已被进一步应用于在市售有机玻璃表面制备沸石单分子层，以及在玻璃板上制备b取向的Silicalite-1晶体多层膜。本研究建立的组装方法为在聚合物改性固体基质和有机玻璃上制备沸石单分子膜，以及利用层层技术制备沸石-聚合物复合膜提供了一条可行的途径。
The b-oriented monolayers of microsized silicalite-1 crystals have been manually assembled on glass plate supported poly(ethylene oxide) (PEO), poly(vinyl alcohol) (PVA), chitosan, and poly(methyl methacrylate) (PMMA) thin films via hydrogen bonding with much enhanced binding strength and satisfactory degrees of coverage and close packing. The exerted pressure and rubbing time in the manual assembly do not affect the binding strength of the silicalite-1 monolayer on the glass plate supported polymeric film. This manual assembly has been further applied to fabricate zeolite monolayers on commercially available Plexiglas surfaces and b-oriented multilayered films of silicalite-1 crystals on glass plates. The assembly method established in this study provides a feasible way to produce zeolite monolayers on polymer-modified solid substrates and Plexiglas and to fabricate zeolite-polymer composite membranes by means of the layer-by-layer technique.