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首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of poly(methyl methacrylate)/silica nanocomposite through emulsion polymerization using dimethylaminoethyl methacrylate
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Synthesis of poly(methyl methacrylate)/silica nanocomposite through emulsion polymerization using dimethylaminoethyl methacrylate

机译：甲基丙烯酸二甲氨基乙酯乳液聚合法合成聚甲基丙烯酸甲酯/二氧化硅纳米复合材料

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Polymer/Silica nanocomposite latex particles were prepared by emulsion polymerization of methyl methacrylate (MMA) with dimethylaminoethyl methacrylate (DM). The reaction was performed using a nonionic surfactant and in the presence of silica nanoparticles as the seed. The polymer-coated silica nanoparticles with polymer content and number average particle sizes ranged from 32 to 93 wt% and 114-310 nm, respectively, were obtained depending on reaction conditions. Influences of some synthetic conditions such as MMA, DM, surfactant concentration, and the nature of initiator on the coating of the silica nanoparticles were studied. Electrostatic attraction between anionic surface of silica beads and cationic amino groups of DM is the main driving force for the formation of the nanocomposites. It was demonstrated that the ratio of DM/MMA is important factor in stability of the system. The particle size, polymer content, efficiency of the coating reacction, and morphology of resulted nanocomposite particles showed a dependence on the amount of the surfactant. Zeta potential measurement s confirmed that the DM was located at the surface of the nanocomposite particles. Thermogravimetric analysis indicated a relationship between the composition of polymer shell and polymer content of the nanocomposites. The nanocomposites were also characterized by FTIR and differential scanning calorimetry techniques. (c) 2008 Wiley, Periodicals, Inc.
机译：聚合物/二氧化硅纳米复合胶乳颗粒是通过甲基丙烯酸甲酯（MMA）与甲基丙烯酸二甲氨基乙基酯（DM）乳液聚合而制得的。使用非离子表面活性剂并在二氧化硅纳米粒子作为种子存在下进行反应。取决于反应条件，获得了聚合物涂覆的二氧化硅纳米颗粒，其聚合物含量和数均粒径分别为32至93wt％和114-310nm。研究了诸如MMA，DM，表面活性剂浓度和引发剂的性质等合成条件对二氧化硅纳米颗粒涂层的影响。二氧化硅珠的阴离子表面和DM的阳离子氨基之间的静电吸引是形成纳米复合材料的主要驱动力。结果表明，DM / MMA的比例是系统稳定性的重要因素。粒度，聚合物含量，涂层反应的效率以及所得纳米复合颗粒的形态显示出取决于表面活性剂的量。 Zeta电势的测量证实了DM位于纳米复合颗粒的表面。热重分析表明聚合物壳的组成与纳米复合材料的聚合物含量之间的关系。还通过FTIR和差示扫描量热技术表征了纳米复合材料。 （c）2008年Wiley，Periodicals，Inc.

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