用一步自由基聚合法从苯乙烯(St)和甲基丙烯酸(MAA)制备了一种两亲性共聚物PSxMAAy,并将其作为聚偏氟乙烯(PVDF)膜材料的共混添加剂,通过液体沉淀相转化法制备得到各种改性的PVDF膜.研究表明,该添加剂PSxMAAy不仅和PVDF在一定范围内有好的相容性,而且含较高MAA比例的添加剂(即PS1MAA1相对于PS4MAA1)对PVDF膜的亲水性及抗污染性的提高具有更大的优势.取决于添加剂的比例,改性PVDF膜的亲水性可大大提高(水接触角可从未改性PVDF膜的93.5°下降为改性PVDF膜的62.1°);对牛血清蛋白(BSA)的抗污染能力显著增强(相比未改性膜BSA的静态吸附量的降低可高达82％).在对BSA和正十六烷乳液的膜过滤实验中,改性PVDF膜对BSA和正十六烷均表现出较好的截留效果和更强的抗污染性能,相比未改性膜的通量衰减率降低而通量恢复率提高.
参考文献
| [1] | Lei Wang;Xudong Wang;Rui Miao.Fouling Behavior of Typical Organic Foulants in Polyvinylidene Fluoride Ultrafiltration Membranes: Characterization from Microforces[J].Environmental Science & Technology: ES&T,20138(8):3708-3714. |
| [2] | Zhang GJ;Ji SL;Gao X;Liu ZZ.Adsorptive fouling of extracellular polymeric substances with polymeric ultrafiltration membrances[J].Journal of Membrane Science,20081/2(1/2):28-35. |
| [3] | Yan Hao;Cui Liang;Akihito Moriya.Visualization of Protein Fouling inside a Hollow Fiber Ultrafiltration Membrane by Fluorescent Microscopy[J].Industrial & Engineering Chemistry Research,201245(45):14850-14858. |
| [4] | 冯霞;王倩;白静娜;赵义平;申向;陈熙;陈莉.两性离子聚合物表面改性的聚偏氟乙烯抗污染膜的制备及性能[J].高分子材料科学与工程,2014(7):71-75. |
| [5] | Huang, Xin;Wang, Weiping;Liu, Yaodong;Wang, Hui;Zhang, Zhibing;Fan, Wenling;Li, Lei.Treatment of oily waste water by PVP grafted PVDF ultrafiltration membranes[J].Chemical engineering journal,2015:421-429. |
| [6] | Shu Nishigochi;Toru Ishigami;Tatsuo Maruyama.Improvement of Antifouling Properties of Polyvinylidene Fluoride Hollow Fiber Membranes by Simple Dip Coating of Phosphorylcholine Copolymer via Hydrophobic Interactions[J].Industrial & Engineering Chemistry Research,20146(6):2491-2497. |
| [7] | Shao, X.-S.;Li, J.-H.;Zhou, Q.;Miao, J.;Zhang, Q.-Q..Amphiphilic poly(vinyl chloride)-g-poly[poly(ethylene glycol) methylether methacrylate] copolymer for the surface hydrophilicity modification of poly(vinylidene fluoride) membrane[J].Journal of Applied Polymer Science,20135(5):2472-2478. |
| [8] | 张益慧;查富芳;范益群.添加剂PVP分子量对PVDF平板膜微结构及性能的影响[J].膜科学与技术,2013(1):6-11. |
| [9] | Hester J.F.;Mayes A.M.;Banerjee P..Preparation of protein-resistant surfaces on poly(vinylidene fluoride) membranes via surface segregation[J].Macromolecules,19995(5):1643-1650. |
| [10] | Jian-Hua Li;Mi-Zi Li;Jing Miao;Jia-Bin Wang;Xi-Sheng Shao;Qi-Qing Zhang.Improved surface property of PVDF membrane with amphiphilic zwitterionic copolymer as membrane additive[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,201217(17):6398-6405. |
| [11] | 王争辉 .PVDF超滤膜制备工艺强化研究及高效添加剂探索[D].哈尔滨工业大学,2007. |
| [12] | 陆茵 .PVDF相转化成膜机理及制膜规律研究[D].浙江大学,2003. |
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