以2-溴异丁酸对磺酸基苯乙酯为引发剂引发苯乙烯发生原子转移自由基聚合,得到的聚合物与NaOH反应转化为端基为磺酸钠的PS(PS-SO3Na).然后采用静电组装方法将PS-SO3Na与表面阳离子化的SiO2胶体(SiO2-CBAFS)进行静电组装,得到表面构筑了高分子刷的有机一无机纳米粉体及单层膜.采用红外、核磁表征了PS-SO3Na的结构,并用红外、热失重、接触角研究了组装体系的结构、组装量及表面行为.研究表明,采用2-溴异丁酸对磺酸基苯乙酯可以引发苯乙烯聚合得到PS-SO3Na,采用静电组装的方法可以成功地在表面阳离子化的SiO2-CBAFS上构筑组装量高达34.4%的高分子刷,并且高分子刷的表面水接触角达到75.3°;组装体系的组装量、表面水接触角均随聚合物溶液浓度的增加而下降;当外界环境不同时,其表面水接触角也发生相应的变化.
参考文献
| [1] | Zhao H;Kang X;Liu L .Come-coil polymer brushes on the surface of silica nanoparticles[J].Macromolecules,2006,38:10619. |
| [2] | 方少明,周思凯,陈志军,彭凯,周立明.聚合物"刷子"的研究进展[J].材料导报,2006(03):21-24,28. |
| [3] | Skaff H.;Ilker MF.;Coughlin EB.;Emrick T. .Preparation of cadmium selenide-polyolefin composites from functional phosphine oxides and ruthenium-based metathesis[J].Journal of the American Chemical Society,2002(20):5729-5733. |
| [4] | Li D;Lütt M et al.Preparation,characterization,and properties of mixed organic and polymeric self-assembled mutilayers[J].Journal of the American Chemical Society,1998,120:8797. |
| [5] | Anthony M G;William J B.[A].VCHWiley,Wienheim,2004:35. |
| [6] | Lee, DW;Ihm, SK;Lee, KH .Mesoporous silica framed by sphere-shaped silica nanoparticles[J].Microporous and Mesoporous Materials,2005(1/3):262-268. |
| [7] | Li D;Sheng X;Zbao B .Environmentally responsive "hairy" nanoparticles:Mixed homopolymer brushes on silica nanoparticles synthesized by living radical polymerization techniques[J].Journal of the American Chemical Society,2005,127:6248. |
| [8] | Seino M;Yokomachi K;Hayakawa T .Preparation of poly(N-isopropylacrylamide) grafted silica bead using hyperbranched polysiloxysilane as polymer brush and application to temperature-responsive HPLC[J].Polymer,2006,47:1946. |
| [9] | Hou SF.;Li ZC.;Li QG.;Liu ZF. .Poly(methyl methacrylate) nanobrushes on silicon based on localized surface-initiated polymerization[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,2004(1/4):338-345. |
| [10] | Xu FJ;Cai QJ;Kang ET;Neoh KG .Surface-initiated atom transfer radical polymerization from halogen-terminated Si(111) (Si-X, X = Cl, Br) surfaces for the preparation of well-defined polymer-Si hybrids[J].Langmuir: The ACS Journal of Surfaces and Colloids,2005(8):3221-3225. |
| [11] | Wang Y;Hu S;Brittain W .Polymer brush grafted from an allylsilane-functionalized surface[J].Macromolecules,2006,39:5675. |
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