Nanosized hairy grains: A model system to understand the reinforcement

被引：21

作者：

Castaing, JC

Allain, C

Auroy, P

Auvray, L

Pouchelon, A

机构：

[1] UNIV PARIS 11, FAST, CNRS, URA 871, F-91405 ORSAY, FRANCE

[2] CENS, CEA, CNRS, LAB LEON BRILLOUIN, F-91191 GIF SUR YVETTE, FRANCE

[3] RHONE POULENC, F-69191 ST FONS, FRANCE

[4] INST CURIE, CNRS, UMR 168, SECT RECH, F-75231 PARIS 05, FRANCE

来源：

EUROPHYSICS LETTERS | 1996年 / 36卷 / 02期

关键词：

D O I：

10.1209/epl/i1996-00202-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have prepared nanosized hairy grains by grafting long polydimethylsiloxane chains onto silica particles of radius approximate to 15 nm. The synthesis method allows the particles to keep in truly stable suspension at any stage of their preparation. In dilute suspension, these hairy grains behave as repulsive soft spheres. Above a certain concentration (of the order of 0.1 g/cm(3)), the polymer chains form bridges between the particles due to physical adsorption, which induces a gelation of the suspension. If the solvent is completely removed, a reinforced elastomer is formed. Its mechanical properties (which can be exceptionally good) are entirely determined by the design of the ultimate particles.

引用

页码：153 / 158

页数：6

共 8 条

[1] BUILDING OF A GRAFTED LAYER .1. ROLE OF THE CONCENTRATION OF FREE POLYMERS IN THE REACTION BATH [J].