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首页> 外文期刊>RSC Advances >Contribution of silica-rubber interactions on the viscoelastic behaviors of modified solution polymerized styrene butadiene rubbers (M-S-SBRs) filled with silica
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Contribution of silica-rubber interactions on the viscoelastic behaviors of modified solution polymerized styrene butadiene rubbers (M-S-SBRs) filled with silica

机译：硅橡胶相互作用对填充硅的改性固溶丁苯橡胶（M-S-SBRs）粘弹性行为的贡献

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摘要

A series of modified solution-polymerized styrene butadiene rubbers (M-S-SBRs) with different molar contents of polar groups were prepared through grafting 3-mercaptopropionic acid into solution-polymerized styrene butadiene rubber (S-SBR) chains. The molar contents of the polar groups in M-S-SBR were calculated using H-1 nuclear magnetic resonance (H-1 NMR) spectroscopy. Thermodynamic analytical methods, including the surface energy of M-S-SBR and filler flocculation, show that the introduction of polar groups increases the work of adhesion of filler-rubber (W-rf), which is an indicator for the compatibility of the filler with rubber. The thermodynamic results can be further proved by TEM micrographs. Strain sweep experiments were carried out to investigate the temperature dependent nonlinear strain-dependence of elastic moduli, referred to as the Payne effect. The filler-filler network and interfacial strength were studied in terms of critical strain gamma(c) and activation energy E-a. Dynamic mechanical measurements show that a combination of higher energy dissipation in the low temperature range and higher elasticity in the high temperature region were achieved for M-S-SBR/Silica when compared with their non-modified counterpart.
机译：通过将3-巯基丙酸接枝到溶液聚合的丁苯橡胶（S-SBR）链中，制备了一系列具有不同极性基团摩尔含量的改性的溶液聚合的丁苯橡胶（M-S-SBRs）。使用H-1核磁共振（H-1 NMR）光谱计算M-S-SBR中极性基团的摩尔含量。热力学分析方法，包括MS-SBR的表面能和填料絮凝，表明极性基团的引入增加了填料-橡胶（W-rf）的粘合作用，这是填料与橡胶相容性的指标。热力学结果可以通过TEM显微照片进一步证明。进行了应变扫描实验以研究弹性模量的温度相关非线性应变相关性，称为佩恩效应。根据临界应变γ（c）和活化能E-a研究了填料-填料网络和界面强度。动态力学测量表明，与未改性的M-S-SBR /二氧化硅相比，M-S-SBR /二氧化硅在低温范围内具有较高的能量耗散，在高温区域内具有较高的弹性。

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