接枝丙烯酸对聚偏氟乙烯膜表面亲水改性的研究
Studies on Surface Modification of PVDF Membranes by UV Grafted Acrylic Acid
DOI: 10.12677/HJCET.2013.34023, PDF, HTML,   
作者: 沈 鹏*, 区文仕, 吴业辉, 王希：广州中国科学院先进技术研究所水科学研究中心，广州；汤建强：江阴金水膜工程技术有限公司，无锡；尹忠：芜湖美的厨卫电器制造有限公司，芜湖
关键词: 紫外接枝；丙烯酸；聚偏氟乙烯；超滤膜；UV Grafting; Acrylic Acid; Poly (Vinylidene Fluoride); Ultrafiltration Membrane
摘要: 为了改善传统聚偏氟乙烯(PVDF)亲水性不强的缺点，本研究以二苯甲酮(BP)为光引发剂，通过紫外光照，将亲水性单体丙烯酸接枝于PVDF膜的表面。通过测试纯水接触角和吸水率的表征值，考察PVDF膜改性前后的亲水性的变化，并且确定了引发剂浓度、辐照时间等因素对接枝率的影响。结果发现接枝后的PVDF膜的亲水性得到明显改善，而且随着光引发剂浓度的增大，丙烯酸的接枝率先增大而后在一定区间内保持稳定。本实验还通过衰减全反射光谱和扫描电子显微镜图片对接枝后PVDF膜表面化学组成和微观形貌进行了表征。
Abstract: To improve the hydrophilic property for the traditional PVDF, acrylic acid was grafted onto the surface of PVDF membrane by UV irradiation grafting polymerization with benzophenone as photo-initiator. The static contact angle and water absorption ratio were used to study the changes of hydrophilic property of modified PVDF membranes, and the principal factors influenced the grating degree were discussed, such as the concentration of photo-initiator, irra-diation time. The results showed that the hydrophilic property of PVDF membranes was improved significantly, and with the increase of the concentration of photo-initiator, the degree of grafting increased first, then stayed stable in a certain range. We also used attenuated total reflection-Fourier transform infrared spectroscopy and scanning electron mi-croscopy to characterize the chemical structure and morphological changes of the original and modified PVDF membrane.
文章引用：沈鹏, 区文仕, 吴业辉, 王希, 汤建强, 尹忠. 接枝丙烯酸对聚偏氟乙烯膜表面亲水改性的研究[J]. 化学工程与技术, 2013, 3(4): 127-131. http://dx.doi.org/10.12677/HJCET.2013.34023

参考文献

[1] Z. H. Wang, H. R. Yu, J. F. Xia, et al. Novel GO-blended PVDF ul-trafiltration membranes. Desalination, 2012, 299(1): 50-54.
[2] A. Rahimpour, M. Jahanshahi, A. Mollahosseini, et al. Structural and performance properties of UV-assisted TiO2 deposited nano- composite PVDF/SPES membranes. Desalination, 2012, 285: 31-38.
[3] N. A. Hashim, F. Liu and K. Li. A simplified method for preparation of hy-drophilic PVDF membranes from an amphiphilic graft copolymer. Journal of Membrane Science, 2009, 345(1-2): 134-141.
[4] Z. Yi, L.-P. Zhu, Y.-Y. Xu, et al. Surface zwitterionicalization of poly(vinylidene fluoride) porous membranes by post-reaction of the amphiphilic precursor. Journal of Membrane Science, 2011, 385-386(12): 57-66.
[5] F. Liu, N. A. Hashim, M. R. M. Abed, et al. Progress in the production and modification of PVDF membranes. Journal of Membrane Science, 2011, 375(1-2): 1-27.
[6] D. M. He, H. Susanto and M. Ulbricht. Photo-irradiation for preparation, modifica-tion and stimulation of polymeric membranes. Progress in Polymer Science, 2009, 34(1): 62-98.
[7] 哈鸿飞, 吴季兰. 高分子辐射化学——原理与应用[M]. 北京:北京大学出版社, 2002: 54-56.
[8] H. M. Ma, R. H. Davis and C. N. Bowman. Principal factors affecting sequential photoinduced graft polymerization. Polymer, 2001, 42(20): 8333-8338.
[9] 王翱, 魏俊富, 赵孔银等. 紫外光接枝改性聚丙烯薄膜的研究[J]. 功能材料, 2012, 43(20): 1-4.
[10] M. N. A. Seman, M. Khayet and N. Hilal. Comparison of two different UV-grafted nan-ofiltration membranes prepared for reduction of humic acid fouling using acrylic acid and N-vinyl- pyrrolidone. Desalination, 2012, 287: 19-29.
[11] A. Wenzel, H. Yanagishita, D. Kitamoto, et al. Effects of preparation condition of photoinduced graft filling-polymerized mem-branes on pervaporation performance. Journal of Membrane Science, 2000, 179(1-2): 69-77.
[12] H.-Y. Yu, Z.-K. Xu, Q. Yang, et al. Im-provement of the antifouling characteristics for polypropylene micro-porous membranes by the sequential photoinduced graft polymeriza-tion of acrylic acid. Journal of Membrane Science, 2006, 281(1-2): 658-665.