ESR study of silica-filled SBR with different rubber/filler interactions
ESR study of silica-filled SBR with different rubber/filler interactions
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DOI：
10.1002/app.27843
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发表时间：
2008-05
影响因子：
3
通讯作者：
Masayoshi Ito;H. Isago;N. Suzuki
中科院分区：
文献类型：
--
作者：
Masayoshi Ito;H. Isago;N. Suzuki
采用几种偶联剂制备了白炭黑填充丁苯橡胶（SBR）生胶及其具有不同橡胶/填料相互作用的硫化胶。对未硫化和硫化样品进行拉伸试验和电子自旋共振（ESR）测量，以获得关于填料/橡胶相互作用对SBR中的碳-碳（CC）键和橡胶与硫之间的交联点处的碳-硫（CSC、CSSC）键在拉力下的断裂的影响的信息。ESR结果和应力-应变数据的组合表明，随着通过拉伸施加到样品的机械能的增加，二氧化硅颗粒周围的碳-硫键首先断裂，然后是橡胶基体中的碳-硫键和CC键的断裂。并对ESR谱的归属进行了讨论。© 2008 Wiley Periodicals，Inc.应用聚合物科学杂志，2008年
Silica-filled styrene–butadiene rubber (SBR) unvulcanizates and their vulcanizates with different rubber/filler interactions were prepared by using several kinds of coupling agents. Tensile tests and electron spin resonance (ESR) measurements were carried out for both unvulcanized and vulcanized samples to get information on the effects of filler/rubber interactions on the breakdown of carbon–carbon (CC) linkages in SBR and carbon–sulfur (CSC, CSSC) linkages at the crosslinked points between rubber and sulfur by a tensile force. The combination of ESR results and stress–strain data suggested that with increasing the mechanical energy applied to the samples by the stretching, the carbon–sulfur linkages around silica particles were broken first, followed by the breakdown of carbon–sulfur and CC linkages in the rubber matrix. The assignment of ESR spectrum was also discussed. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008