Cure kinetic and network structure of NR/SBR composites reinforced by multiwalled carbon nanotube and carbon blacks

Reinforcing mechanisms of carbon nanotubes and high structure carbon black in natural rubber/styrene-butadiene rubber blend prepared by mechanical mixing − effect of bound rubber

“…Le et al showed that the NR exhibits a significant role in promoting wetting and interfacial interaction in the nanotube filled NR/SBR blend. A primary role of NR in developing the interaction of NR/SBR with MWCNTs was also postulated based on our swelling analysis . It is believed that NR is able to interact with MWCNT using both van der Waals forces and cation − π bonding .…”

“…Additionally, NR is more polar than SBR and is expected to contribute more efficiently in polymer − filler interactions compared with SBR. Our recent study showed that high structure CB has a dominant effect on the vulcanization kinetics and network structure of NR/SBR blends . The motivation behind this study was to explore how the mechanical properties of the NR/SBR blend are affected by highly promoting bound rubber particles like high structure CB and how these characteristics differ from highly anisotropic and very strong particles like CNTs.…”

“…As presented in Table , all three reinforcements increase the crosslinking density; however, CBXE2B shows the biggest influence on the enhancement of crosslinking density. This behavior is consistent with crosslinking density analysis performed based on the swelling experiments in our previous study which could be ascribed to its higher bound/occluded rubber content which is believed to dominate the curing system in the matrix rubber …”

Influence of vulcanization temperature on the cure kinetics and on the microstructural properties in natural rubber/styrene-butadiene rubber blends prepared by solution mixing

“…In most of the cases, elastomer blends are prepared using the two-roll mill method [41][42][43][44]; previous studies on NR/SBR blends prepared using this method have shown that NR and SBR are immiscible [25]. On the other hand, it was recently reported that NR/SBR samples prepared by solution method maintain the immiscible character [4].…”

Enhanced morphology and mechanical characteristics of clay/styrene butadiene rubber nanocomposites

“…This mercaptobenzothiazole (structure II) readily reacted with ZnO to form the Zinc activated species (structure III). The accelerator polysulfide complexes, which are formed by the interaction of the accelerator molecule with molecular sulfur, are better sulfurating species than molecular sulfur (Ahmadi and Shojaei, 2013;Wise, 1964a, 1964b;Coran, 1964aCoran, ,1964bGiannini et al, 2011;Sullivan et al, 1992). Bateman et al (1963) postulated an ionic-cleavage, where one of the sulfur atoms in the Zinc accelerator complex (structure III) causes a nucleophilic attack on the S 8 ring, resulting in Zinc amine complex of 2-bisbenzothiazole-2-2′-polysulfides (structure IV).…”