淡江大學機構典藏:Item 987654321/109923
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    Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/109923


    Title: Preparation and Characterization of Poly(vinylidene fluoride) Membranes Using Self-Assembled Dibenzylidene Sorbitol
    Authors: Lai, Wei-Chi;Cheng, Li-Ting
    Keywords: Poly(vinylidene fluoride);Self-assembly;Dibenzylidene sorbitol;Composite membranes;Reinforcing materials;Membrane distillation
    Date: 2016-07-26
    Issue Date: 2017-03-14 02:10:30 (UTC+8)
    Abstract: We proposed a method for the preparation of novel poly(vinylidene fluoride) (PVDF) membranes with self-assembled 1,3:2,4-di(3,4-dimethylbenzylidene) sorbitol (DMDBS). The vapor-induced phase separation (VIPS) method with a dry/wet process was used to produce DMDBS/PVDF composite membranes. The resulting membranes exhibited the coexistence of PVDF cellular pores and crystalline particles. The DMDBS molecules self-assembled into nanofibril structures, and a large number of nanofibrils were found on the surfaces and in the cross-sections of the prepared membranes. The DMDBS nanofibril networks in the PVDF matrix acted as reinforcing materials that enhance the hardness and stiffness of the membranes. Moreover, because of the entangled DMDBS networks, a greater strain was required to induce sample failure; therefore, the ductility of the membranes increased with increasing amounts of DMDBS. In addition, in a membrane distillation process, our composite membranes exhibited a good permeate flux that was comparable to that of commercial PVDF membranes.
    Relation: The 10th Conference of Aseanian Membrane Society (AMS10)
    Appears in Collections:[Graduate Institute & Department of Chemical and Materials Engineering] Proceeding

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