通过表面引发的可逆-加成断裂链转移(RAFT)聚合,制备了聚甲基丙烯酸甲酯-聚甲基丙烯酸二甲氨乙酯嵌段共聚物(PMMA-b-PDMAEMA)接枝改性的有机/无机杂化二氧化硅纳米粒子(BCP-g-SiO2 NPs),并将其与聚偏氟乙烯(PVDF)溶液共混,通过传统的非溶剂诱导相分离(NIPS)法制备 PVDF/BCP-g-Si O 2有机-无机杂化分离膜,进一步通过膜表面PDMAEMA链段与1,3-丙磺酸内酯之间的季胺化反应,实现了 PVDF/BCP-g-SiO2有机-无机杂化膜的表面两性离子化。研究结果表明,BCP-g-SiO2 NPs 的引入以及膜表面的进一步两性离子化显著提高了 PVDF膜的亲水性和抗污染性能,是 PVDF 超滤膜等相转化膜材料改性的有效方法。
The BCP-g-SiO2 NPs were first prepared by grafting block copolymer of poly(methylmethacrylate) and poly(2-(dimethylamino)ethyl methacrylate)brushes onto SiO2 NPs via surface-initiated reversible addition fragmentation chain transfer (RAFT)polymerization.Then the BCP-g-SiO2 NPs were blended with PVDF to prepare PVDF/BCP-g-SiO2 organic-inorganic hybrid membranes by the traditional non-solvent induced phase separation (NIPS)method.Subsequently,the PDMAEMA chains were zwitterionicalized by 1 ,3-propane sul-tone (1,3-PS).Therefore,the surface zwitterionicalization PVDF/BCP-g-SiO2 organic-inorganic hybrid mem-branes were successful prepared.The hydrophilicity and antifouling ability of the PVDF membrane were signifi-cantly enhanced after surface zwitterionicalization.Therefore,it was an effective method to modify the PVDF membrane using BCP-g-SiO2 NPs as additive together with surface zwitterionicalizationa.
参考文献
| [1] | Tao M M;Liu F;Xue L X .Hydrophilic poly(vinylidene fluoride)(PVDF)membrane by in situ polymerisation of 2-hydroxyethyl methacrylate(HEMA)and micro-phase separation[J].Journal of Materials Chemistry,2012,22(18):9131-9137. |
| [2] | Chang Y;Ko C Y;Shih Y J et al.Surface grafting con-trol of PEG ylated poly(vinylidene fluoride)antifouling membrane via surface-initiated radical graft copolymeriza-tion[J].Journal of Membrane Science,2009,345(1-2):160-169. |
| [3] | 王建华,朱利平,朱丽静,朱宝库,徐又一.超临界CO_2中两亲共聚物的合成及其对PVDF膜亲水化改性[J].功能材料,2012(01):73-76. |
| [4] | Yi Z;Zhu L P;Xu Y Y et al.Surface zwitterionicaliza-tion of poly(vinylidene fluoride)porous membranes by post-reaction of the amphiphilic precursor[J].Journal of Membrane Science,2011,385-386:57-66. |
| [5] | Yu LY;Xu Z L;Shen H M et al.Preparation and char-acterization of PVDF-SiO2 composite hollow fiber UF membrane by sol-gel method[J].Journal of Membrane Science,2009,337(1-2):257-265. |
| [6] | Shi F M;Ma Y X;Ma J et al.Preparation and charac-terization of PVDF/TiO2 hybrid membranes with different dosage of nano-TiO2[J].Journal of Membrane Science,2012,389:522-531. |
| [7] | Liu F;Abed M R M;Li K .Preparation and characteriza-tion of poly(vinylidene fluoride)(PVDF)based ultrafil-tration membranes using nano γ-Al2 O3[J].Journal of Membrane Science,2011,366(1-2):97-103. |
| [8] | Imer D Y K;Kose B;Altinbas M et al.The production of polysulfone(PS)membrane with silver NPs(AgNP):physical properties,filtration performances,and biofoul-ing resistances of membranes[J].Journal of Membrane Science,2013,428:620-628. |
| [9] | Liu, J.;Zhang, L.;Shi, S.;Chen, S.;Zhou, N.;Zhang, Z.;Cheng, Z.;Zhu, X. .A novel and universal route to SiO_2-supported organic/inorganic hybrid noble metal nanomaterials via surface raft polymerization[J].Langmuir: The ACS Journal of Surfaces and Colloids,2010(18):14806-14813. |
| [10] | Dong, Z.;Wei, H.;Mao, J.;Wang, D.;Yang, M.;Bo, S.;Ji, X. .Synthesis and responsive behavior of poly(N,N-dimethylaminoethyl methacrylate) brushes grafted on silica nanoparticles and their quaternized derivatives[J].Polymer: The International Journal for the Science and Technology of Polymers,2012(10):2074-2084. |
| [11] | Zhu L P;Xu Y Y;Dong H B et al.Amphiphilic PPESK-graft-P(PEGMA)copolymer for surface modifi-cation of PPESK membranes[J].Materials Chemistry and Physics,2009,115(01):223-228. |
| [12] | Zhao Y F;Zhu L P;Yi Z et al.Improving the hydro-philicity and fouling-resistance of polysulfone ultrafiltra-tion membranes via surface zwitterionicalization mediated by polysulfone-based triblock copolymer additive[J].Journal of Membrane Science,2013,440:40-47. |
| [13] | Yue W W;Li H J;Xiang T et al.Grafting of zwitteri-on from polysulfone membrane via surface-initiated AT-RP with enhanced antifouling property and biocompati-bility[J].Journal of Membrane Science,2013,446:79-91. |
| [14] | 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,2012(17):6398-6405. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%