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
收藏
页码：887 / 893
页数：7
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