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首页> 外文期刊>Journal of Applied Polymer Science >The surface modification of nanosilica, preparation of nanosilica/acrylic core-shell composite latex, and its application in toughening PVC matrix
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The surface modification of nanosilica, preparation of nanosilica/acrylic core-shell composite latex, and its application in toughening PVC matrix

机译：纳米二氧化硅的表面改性，纳米二氧化硅/丙烯酸核壳复合乳液的制备及其在增韧PVC基体中的应用

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The properties and morphology of nanosilica modified with silane coupling agent, methacryloxypropyltrimethoxysilane (MPS), were characterized by fourier transform infrared, zeta potentials, thermogravimetric analysis, and transmission electron microscopy. The results showed that the grafting ratio of MPS on the surface of nanosilica increased with the MPS content. MPS-silica/PBA/PMMA core-shell latexes (MPS-Si/ACR) were prepared by seeded emulsion polymerization. Then they were used to mix with PVC resin. The outer layer (PMMA) enhanced the dispersibility of MPS-Si/ACR in the PVC matrix by increasing the interfacial interaction of these composite particles with PVC. The notched impact strengths of the blends were influenced by the weight ratio of MPS to silica, the concentration of emulsifier (SDS), and the MPS-Si/ACR content. The relationships between the mechanical properties and the core-shell composite structures were elaborated. (c) 2007 Wiley Periodicals, Inc.
机译：通过傅立叶变换红外，ζ电势，热重分析和透射电子显微镜对硅烷偶联剂甲基丙烯酰氧基丙基三甲氧基硅烷（MPS）改性的纳米二氧化硅的性质和形貌进行了表征。结果表明，MPS在纳米二氧化硅表面的接枝率随MPS含量的增加而增加。通过种子乳液聚合制备MPS-二氧化硅/ PBA / PMMA核壳胶乳（MPS-Si / ACR）。然后将它们与PVC树脂混合。外层（PMMA）通过增加这些复合颗粒与PVC的界面相互作用，增强了MPS-Si / ACR在PVC基体中的分散性。共混物的缺口冲击强度受MPS与二氧化硅的重量比，乳化剂（SDS）的浓度以及MPS-Si / ACR含量的影响。阐述了力学性能与核壳复合结构之间的关系。 （c）2007年Wiley Periodicals，Inc.

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