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Effect of silane coupling agent modified kaolinite addition on the performance of PVDF membrane

Authors： ZHU Zhichaoa, b，ZHU Xiaoyana, b ，LEI Xinronga

Units： 1Faculty of Material Science and Chemistry, China University of Geosciences, 430074 Wuhan, People’s Republic of China 2Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences, 430074 Wuhan, People’s Republic of China 3Zhejiang Research Institute, China University of Geosciences，430074 Wuhan

KeyWords： kaolinite, APTES, PVDFmembrane, water treatment

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2015,35(6):9-15

Abstract：

Polyvinylidene fluoride(PVDF) is one of the most widely used polymer membrane materials due to its excellent properties on mechanical, chemical and thermal stability, but it has poor hydrophilicity and can be easily polluted. To solve this problem, silane coupling agent (APTES) was added into kaolinite, and blending method was used to prepare the modified kaolinite/PVDF composite membrane. XRD and FTIR were used to analyze the crystal phase and chemical group of the composite membrane. The morphologies of the membrane surface and cross-section were observed by FESEM. The contact angle, pure water flux and water flux recovery were used to find out the effect of modified kaolinite addition on the properties of PVDF membrane. The results showed that the composite membrane constituted mainly β-crystal and a small mount of α-crystal. The water contact angle of membrane decreased from 72° to 64° with increasing modified kaolinite, its hydrophilicity enhanced gradually. The increasing of content of modified kaolinite increased the pure water flux and flux recovery ratio at first and then decreased. The composite membrane with the content of 0.75 wt% had a highest water flux kaolinite and increased from 250 L/(m2h) of primary membrane to 528 L/(m2h). The flux recovery ratio increased from 50 % to 81%.

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[1]赵晴,于水利,吕慧. 基于复合纳米颗粒的有机-无机杂化膜的制备与性能表征. 功能材料[J].2010,4(41):737-740.
[2]王龙庆, 溶液相转化法PVDF/PU共混膜研究[D]. 天津工业大学.2010.
[3]王庐岩，钱英，刘淑秀等. 聚偏氟乙烯分离膜改性研究进展[J].膜科学与技术，2002,22（5）：52-57.
[4]由钰婷，汪阳，张霞. 纳米TiO2共混改性PVDF复合膜的制备和性能[J].材料研究学报.2012，26(3):247-254.
[5]Razmjou A, Mansouri J, Chen V. The effect of mechanical and chemical modification of TiO2 nanoparticles on the surface chemistry, structure and fouling performance of PES ultrafiltration membrane[J].Journal of Membrane Science, 2011, 378: 73-84.
[6] Rajabi H, Ghaemi N, Madaeni S et al. Nanoclay embedded mixed matrix PVDF nanocomposite membrane: Preparation, characterization and biofouling resistance[J]. Applied Surface Science. 2014, 8: 1-8.
[7] 石仁德，纪书华，张连凯. PVDF/粘土纳米复合膜的制备与表征[J].大众科技，2008，3：79-81.
[8]苏琳娜，陶奇，何宏平等. 高岭石有机硅烷嫁接及其在环氧树脂中的应用[J]. 高校地质学报,2013,19:49.
[9]沈玺，高雅男，徐政. 硅烷偶联剂的研究与应用[J].上海生物医学工程， 2006，26（1）:14-17.
[10]叶舒展,周彦豪,陈福林. 高岭土表面改性研究进展[J].橡胶工艺,2004,51（12）：759—764.
[11]顾明浩，张军，王晓琳.聚偏氟乙烯的晶体结构[J].高分子通报. 2006,7:82-87.
[12]Balan E, Marco A, Maurl F, Calas G. First-principle modeling of the infared spectrum of kaolinite[J]. American Mineralogist, 2001, 86: 1321-2330.
[13]Thakur P, Kool A, Bagchi B et al. Enhancement of β phase crystallization and dielectric behavior of kaolinite/ halloysite modified poly(vinylidene fluoride) thin films[J]. Apply clay science, 2014,99:149-159.
[14]Hwang H Y, Kim D J, Kim H J et al. Effect of nanoclay on properties of porous PVDF membranes[J]. Science Direct, 2011, 21:141-147.
[15]Zhang Yalei, Zhao Jing, Chu Huaqian et al. Effect

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