Effect of chemical structure of elastomer on filler dispersion and interactions in silica/solution-polymerized styrene butadiene rubber composites through molecular dynamics simulation

RSC Advances ◽  
2016 ◽  
Vol 6 (18) ◽  
pp. 14643-14650 ◽  
Author(s):  
Yanlong Luo ◽  
Liangliang Qu ◽  
Huifang Su ◽  
Tung W. Chan ◽  
Sizhu Wu

The dynamic properties, filler–rubber interactions, and filler dispersion in silica/SSBR composites with various chemical structures of SSBR were studied using MD. Competing effects led to the existence of an optimum modifier content of 14.2 wt%.

RSC Advances ◽  
2016 ◽  
Vol 6 (63) ◽  
pp. 58077-58087 ◽  
Author(s):  
Yanlong Luo ◽  
Runguo Wang ◽  
Suhe Zhao ◽  
Yiyi Chen ◽  
Huifang Su ◽  
...  

The effect of the vinyl content on microstructure, thermodynamics and dynamics properties of graphene/SSBR composites was investigated. SSBR with the highest vinyl content has the highest interfacial shear stress by pullout simulation.


RSC Advances ◽  
2019 ◽  
Vol 9 (68) ◽  
pp. 40062-40071 ◽  
Author(s):  
Yanlong Luo ◽  
Haobei Liu ◽  
Bo Xiang ◽  
Xianling Chen ◽  
Wei Yang ◽  
...  

Temperature dependence of the interface between silica and styrene butadiene rubber modified by 3-mercaptopropionic acid was investigated by molecular dynamics simulation.


2015 ◽  
Vol 88 (4) ◽  
pp. 676-689 ◽  
Author(s):  
Wengjiang Feng ◽  
Zhenghai Tang ◽  
Peijin Weng ◽  
Baochun Guo

ABSTRACT The use of silica to partially replace carbon black is a common practice in the fabrication of “green tires.” Although some degree of consensus has been approached concerning the improved performance conferred by silica substitution, such as the improved dispersion of carbon black, a quantitative understanding of the relationship between filler networking and the performance of rubber composites has not been established. Thus, an investigation focusing on filler network structure and the correlation between the network structure and the reinforcement of rubber composites was conducted. We prepared solution-polymerized styrene–butadiene rubber (SSBR) reinforced by carbon black and carbon black/silica in different ratios. To exclude as much of the effect from changed crosslinking, and figure out how filler blending influences filler dispersion and filler network structure, the silane generally used in the tire industry was not adopted. The quantitative predictor, the mass fractal dimension df, was derived from the Kraus model and the Huber–Vilgis model. We found that when the amount of substituted silica increases, the filler cluster branching decreases, accompanied by increased reinforcement efficiency. The depressed filler networking induced by silica substitution at an appropriate proportion leads to improved dynamic properties, including lower rolling resistance and better wet skid. When the silica proportion in the filler is too high, severe filler networking is observed, resulting in decreased reinforcing efficiency and impaired dynamic properties.


2013 ◽  
Vol 130 (2) ◽  
pp. 1308-1312 ◽  
Author(s):  
Suo Xiao ◽  
Jianxiang Feng ◽  
Jin Zhu ◽  
Xi Wang ◽  
Chunwang Yi ◽  
...  

2018 ◽  
Vol 51 (1) ◽  
pp. 26-35
Author(s):  
Steven C Peterson ◽  
Sanghoon Kim

Heat-treated starch (HTS) is a renewable material that can be used to modify the surface chemistry of small particles. In this work, HTS was used to coat hydrophilic biochar particles in order to make them more hydrophobic. Then, when added as filler to hydrophobic styrene–butadiene rubber (SBR), the coated biochar dispersed more easily and had enhanced filler–matrix interactions, which were reflected in the tensile properties of the final composites. Biochar particles modified with 5% (weight) HTS showed increases of 59% in the ultimate tensile strength, 49% in elongation percentage, and 79% in fracture toughness of SBR composites compared to unmodified biochar particles. This shows that HTS can be used to improve the tensile properties of composites filled with biochar and potentially other hydrophilic filler materials.


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