丙烯酸乙酯(EA)、甲基丙烯酸甲酯(MMA)、苯乙烯(St)、及丙烯酸丁酯(BA)分别和含烷氧基硅烷单体甲基丙烯酰氧基三甲氧丙基硅烷以一定比例通过自由基共聚反应制得共聚物前驱体,将TEOS在HCl催化剂作用下水解、缩合形成SiO2,然后由共聚物和SiO2通过溶胶-凝胶法合成杂化复合材料,制得的复合材料膜有较好的光学透明性,其透光率在79%以上.利用傅立红外光谱分析了杂化材料的化学结构.溶胶抽取结果表明,在杂化材料中凝胶的含量较高,对它们的形貌特性和研究结果表明:在聚合物基体中SiO2具有较好的分散性,有机-无机相相互贯穿.
The alkoxysilane-containing copolymer precursor was synthesized by free-radical copolymerizationof ethyl acrylate (EA), styrene (St),α-methacrylate (MMA) or butyl acrylate (BA) with an alkoxysilane-containingmonomer, methacryloxypropyltri methyloxysilane (MPTMS), at several feeds. The SiO2, obtained by the hydrolysisof tetraethoxysilane (TEOS), was condensed under the catalysis of HCl. Hybrid composite from silica (SiO2) andcopolymer have been synthesized via the sol-gel process. These composite films exhibited fairly good optical trans-parency and their transmittances are high up to 79% in the visible range and FT-IR spectrums was used to analyze thechemical structure. The results of solvent extraction show that all gel contents in the hybrid materials are much high-er. The morphological features were investigated, which showed that the SiO2 phase is well dispersed in the polymermatrix. The result shows that organic-inorganic phase pentrated each other.
参考文献
| [1] | rennanA;Wilkes G L .Structure-property behavior of sol-gel derived hybrid materials: effect of a polymeric acid catalyst[J].POLYMER,1991,32(04):733. |
| [2] | Chiang CL.;Ma CCM. .Synthesis, characterization and thermal properties of novel epoxy containing silicon and phosphorus nanocomposites by sol-gel method[J].European Polymer Journal,2002(11):2219-2224. |
| [3] | HenchLL;West J K .The sol-gel process[J].Chemical Reviews,1990,90(01):33. |
| [4] | Hsiue GH.;Huang YP.;Jeng RJ.;Kuo WJ. .Microstructural and morphological characteristics of PS-SiO2 nanocomposites[J].Polymer: The International Journal for the Science and Technology of Polymers,2000(8):2813-2825. |
| [5] | HaraguchiK;Takehisa T .Nanocomposite hydrogels: A unique organic-inorganic network structure with extraordinary mechanical, optical, and swelling/de-swelling properties[J].Advanced Materials,2002,14(16):1120. |
| [6] | Yunhui Li;Hongjie Zhang;Huanrong Li .Hybrid organic-inorganic compounds doped with terbium carboxyl complexes produced in situ via a sol-gel approach[J].Materials Letters,2002(4):597-600. |
| [7] | Cheng-Kuang Chan;Shu-Ling Peng;I-Ming Chu;Sheng-Chung Ni .Effects of heat treatment on the properties of poly(methyl methacrylate)/silica hybrid materials prepared by sol-gel process[J].Polymer: The International Journal for the Science and Technology of Polymers,2001(9):4189-4196. |
| [8] | WeiY;Yang D C;Tang L G et al.Synthesis characterization and properties of new polystyrene-SiO2 hybrid sol-gel materials[J].Journal of Materials Research,1993,8(05):1143. |
| [9] | ruceM;Novak .Davies C Inverseorganic-inorganic composite materials 2 Free-radical routes into nonshrinking sol-gel composites[J].Macromolecules,1991,24(19):5481. |
| [10] | DirkCW;Katz H E;Schilling M L et al.Use of thiazole rings to enhance molecular second-order nonlinear optical susceptibilities[Erratum to document cited in CA113 24:[J].CHEMISTRY OF MATERIALS,1991,3(01):201. |
| [11] | Qiu FX.;Zhou YM.;Liu JZ. .The synthesis and characteristic study of 6FDA-6FHP-NLO polyimide/SiO2 nanohybrid materials[J].European Polymer Journal,2004(4):713-720. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%