Smart silica-rubber nanocomposites in virtue of hydrogen bonding interaction

被引:39
作者
Peng, CC
Göpfert, A
Drechsler, M
Abetz, V
机构
[1] GKSS Forschungszentrum Geesthacht GmbH, Inst Polymer Forsch, D-21502 Geesthacht, Germany
[2] Univ Bayreuth, D-95447 Bayreuth, Germany
关键词
nanocomposites; filler-rubber interaction; mechanical properties; hydrogen bonding; silicas;
D O I
10.1002/pat.666
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
In this paper "smart" nanocomposites comprising Stober silica nanoparticles of two different surface polarities and a novel thermoreversible crosslinking rubber carrying self-complementary hydrogen bonding (HB) moiety were presented. This strategy is based on the idea that the introduction of HB between silica and the modified rubber improves both the filler-rubber interaction and the mechanical properties. The resulting nanocomposites were mainly characterized using transmission electron microscopy (TEM) and dynamic mechanical analysis. It is found that the competition and symbiosis between the filler-filler, filler-rubber and rubber-rubber HB interaction, as well as the dynamic mechanical properties were controllable simply by changing the silica loading, the degree of rubber modification and the temperature. Besides, the TEM micrographs showed that the modifications of both silica nanoparticles and rubber promoted better silica dispersion in the rubber matrix. By this strategy it is evident that the Payne effect was reduced and it is possible to modify the mechanical properties of such silica filled composites in a controlled way, which could, as an example, meet the requirements for tire applications. Copyright (c) 2006 John Wiley & Sons, Ltd.
引用
收藏
页码:770 / 782
页数:13
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