Preparation and characterization of PVDF-glass fiber composite membrane reinforced by interfacial UV-grafting copolymerization  

作　　者：Nan Luo Rongle Xu Min Yang Xing Yuan Hui Zhong Yaobo Fan 

机构地区：[1]Group of Membrane Separation Technique,Department of Water Pollution Control Technology,Research Center for Eco-Environmental Sciences,Chinese Academy of Sciences

出　　处：《Journal of Environmental Sciences》2015年第12期24-35,共12页环境科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.51278483);the Institute of Chinese Academy of Sciences in cooperation projects (ZNGZ2011023);the Daqi Technology of Beijing Co.LTD (04F0261601)

摘　　要：A novel inorganic-organic composite membrane,namely poly（vinylidene fluoride） PVDF-glass fiber（PGF） composite membrane,was prepared and reinforced by interfacial ultraviolet（UV）-grafting copolymerization to improve the interfacial bonding strength between the membrane layer and the glass fiber.The interfacial polymerization between inorganic-organic interfaces is a chemical cross-linking reaction that depends on the functionalized glass fiber with silane coupling（KH570） as the initiator and the polymer solution with acrylamide monomer（AM） as the grafting block.The Fourier transform infrared spectrometer-attenuated total reflectance（FTIR-ATR） spectra and the energy dispersive X-ray（EDX） pictures of the interface between the glass fiber and polymer matrix confirmed that the AM was grafted to the surface of the glass fiber fabric and that the grafting polymer was successfully embedded in the membrane matrix.The formation mechanisms,permeation,and anti-fouling performance of the PGF composite membrane were measured with different amounts of AM in the doping solutions.The results showed that the grafting composite membrane improved the interfacial bonding strength and permeability,and the peeling strength was improved by 32.6% for PGF composite membranes with an AM concentration at 2 wt.%.A novel inorganic-organic composite membrane,namely poly（vinylidene fluoride） PVDF-glass fiber（PGF） composite membrane,was prepared and reinforced by interfacial ultraviolet（UV）-grafting copolymerization to improve the interfacial bonding strength between the membrane layer and the glass fiber.The interfacial polymerization between inorganic-organic interfaces is a chemical cross-linking reaction that depends on the functionalized glass fiber with silane coupling（KH570） as the initiator and the polymer solution with acrylamide monomer（AM） as the grafting block.The Fourier transform infrared spectrometer-attenuated total reflectance（FTIR-ATR） spectra and the energy dispersive X-ray（EDX） pictures of the interface between the glass fiber and polymer matrix confirmed that the AM was grafted to the surface of the glass fiber fabric and that the grafting polymer was successfully embedded in the membrane matrix.The formation mechanisms,permeation,and anti-fouling performance of the PGF composite membrane were measured with different amounts of AM in the doping solutions.The results showed that the grafting composite membrane improved the interfacial bonding strength and permeability,and the peeling strength was improved by 32.6% for PGF composite membranes with an AM concentration at 2 wt.%.

关 键 词：Composite membrane Interfacial UV-grafting Interfacial bonding strength ANTIFOULING 

分 类 号：TB33[一般工业技术—材料科学与工程] X703[环境科学与工程—环境工程]