Structure factors of dispersible units of carbon black filler in rubbers.
Structure factors of dispersible units of carbon black filler in rubbers.
复制标题
DOI：
10.1021/la051352s
复制
发表时间：
2005-10
期刊：
影响因子：
--
通讯作者：
T. Koga;M. Takenaka;K. Aizawa;M. Nakamura;T. Hashimoto
中科院分区：
文献类型：
--
作者：
T. Koga;M. Takenaka;K. Aizawa;M. Nakamura;T. Hashimoto
我们报道了可分散单元的结构，这是炭黑（CB）填料最基本但最小的可分散结构单元，在给定的加工条件下在两种橡胶（聚异戊二烯和苯乙烯-丁二烯无规共聚物）基质中形成。各种小角度散射技术获得的结果表明，在对CB/甲苯溶液进行超声处理后观察到的CB聚集体是由大约九个熔合在一起的初级CB颗粒组成的球形。在橡胶基质中，聚集体聚集成高阶结构，在本工作中定义为可分散单元，它们是构建高阶质量分形结构的基本结构元素（或“下截止结构”）。此外，我们发现可分散单元的形态强烈依赖于橡胶基质，尽管质量分形维数保持不变。
We report the structures of dispersible units, a most fundamental but minimal dispersible structural unit of a carbon black (CB) filler that is formed in two kinds of rubber (polyisoprene and styrene-butadiene random copolymer) matrices under a given processing condition. The results obtained from various small-angle scattering techniques showed that the CB aggregates, as observed after the sonification of a CB/toluene solution, were a spherical shape composed of approximately nine primary CB particles fused together. In the rubber matrices, the aggregates clustered into higher order structures defined in this work as the dispersible units, which are the fundamental structural elements (or the "lower cutoff structures") that build up a higher order mass-fractal structure. Furthermore, we found that the morphology of the dispersible units strongly depended on the rubber matrix, although the mass-fractal dimensions remained unchanged.