The surface modification of nanosilica, preparation of nanosilica/acrylic core-shell composite latex, and its application in toughening PVC matrix

被引：80

作者：

Guo, Yakun ^{[1
]}

Wang, Meiying ^{[1
]}

Zhang, Hongqi ^{[3
]}

Liu, Guodong ^{[1
]}

Zhang, Liqun ^{[2
]}

Qu, Xiongwei ^{[1
]}

机构：

[1] Hebei Univ Technol, Sch Chem Engn, Inst Polymer Sci & Engn, Tianjin 300130, Peoples R China

[2] Beijing Univ Chem Technol, Beijing 100029, Peoples R China

[3] Hebei Univ Technol, Study Affairs Off, Tianjin 300130, Peoples R China

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 2008年 / 107卷 / 04期

关键词：

silicas; emulsion polymerization; poly(vinyl chloride); blends; structure-property relations;

D O I：

10.1002/app.27310

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

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.

引用

页码：2671 / 2680

页数：10

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