Effect of Silica-Coated Poly(butyl methacrylate)-block-poly(methyl methacrylate) Double-Shell Particles on the Mechanical Properties of PMMA Composites

被引：7

作者：

Chakkalakal, Golda Louis ^{[1
]}

Alexandre, Michael ^{[2
]}

Boschetti-de-Fierro, Adriana ^{[1
]}

Abetz, Volker ^{[1
]}

机构：

[1] Helmholtz Zentrum Geesthacht, Polymer Res Inst, D-21502 Geesthacht, Germany

[2] Univ Liege, CERM, B-4000 Liege, Belgium

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2012年 / 297卷 / 09期

关键词：

atom-transfer radical polymerization (ATRP); composites; core; shell particles; poly(methyl methacrylate)s (PMMA); TRANSFER RADICAL POLYMERIZATION; NANOPARTICLES; SURFACE; SIZE;

D O I：

10.1002/mame.201100365

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Silica nanoparticles with an average diameter of 12?nm are grafted with PBMA-b-PMMA double shells through typical sequential ATRP from bromoisobutyrate initiators anchored at the silica surface using an epoxysilane. A commercially available PMMA homopolymer is used for the preparation of composites with unmodified, silane-modified and double-shell-modified silica particles. Good mechanical properties are obtained for silica double shell containing systems. The silica content in double shell particle systems is varied from 0 to 2.5?wt%. A significant improvement in impact properties is observed. The surface-modified silica particles are characterized by ATR-FTIR, NMR, GPC, and thermal analyses. TEM analysis is used to analyze the nature of dispersion of particles in the composites.

引用

页码：887 / 893

页数：7

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