Reactive grafting of 3-octanoylthio-1-propyltriethoxysilane in styrene butadiene rubber: Characterization and its effect on silica reinforced tire composites

Das, Saikat; Chattopadhyay, Santanu; Dhanania, Sawar; Bhowmick, Anil K.

doi:10.1016/j.polymer.2019.121693

Cited by 18 publications

(23 citation statements)

References 33 publications

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“…T g is a function of rotational freedom; higher T g results in reduced degree of rotation of polymer backbone. [ 53 ] Since T g of rubber composite having 30 phr silica is the lowest, it can be concluded that it exhibits higher degree of rotation compared with other rubber composites used in this study, making it more rubbery.…”

Section: Resultsmentioning

confidence: 88%

Nonlinear fracture assessment and nanomechanical deformation of elastomeric composites: Development of finite element model and experimental validation

et al. 2021

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In this article, Mode‐I fracture and nanomechanical deformation of elastomeric composites are studied using nonlinear fracture mechanics implicating computer modeling techniques like finite element analysis, and the models developed are verified experimentally. The effect of low notch‐to‐width ratios (NWR) on failure properties like J‐integral, geometry factor, crack tip opening displacement (CTOD), crack advancement, and R‐curves is investigated. The geometry factor is found to be decreasing by 96% when NWR is increased from 0.06 to 0.34. An empirical relationship between CTOD and crack advancement for hybrid elastomeric composites depending on NWR is developed and has been verified analytically. Optimization of silica in 10 phr carbon black filled styrene butadiene rubber is performed, and several characterization techniques are used to justify the outcome. The applicability of mechanical properties like stress contours and factor of safety in fracture characterization of composites is explained briefly. A mesh sensitivity based finite element model has been developed for calibrating the nanoindentation test of elastomeric composites and verified experimentally.

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Section: Resultsmentioning

confidence: 88%

Nonlinear fracture assessment and nanomechanical deformation of elastomeric composites: Development of finite element model and experimental validation

et al. 2021

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“…The proof of successful grafting of propyltriethoxysilane onto the SBR backbone by reactive grafting process was discussed in our earlier communication. [24] We prepared a range of modified rubbers and characterized these elaborately in this paper.…”

Section: Modification Of Sbrmentioning

confidence: 99%

“…[23] In our work, we have attempted to improve the dispersion of silica filler in a tire formulation by grafting of a novel 3-Octanoylthio-1-propyltriethoxysilane (NXT silane) onto SBR. [24] We have further prepared grafted SBR/silica composites with varying grafting weight percentage and filler loading. In the present work, we have focused on the quantification of nano-silica (ULTRASIL 7000GR) dispersion in 3-Octanoylthio-1-propyltriethoxysilane grafted styrene butadiene base rubber by scanning electron microscopy (SEM) and AFM.…”

Section: Introductionmentioning

confidence: 99%

Improved dispersion and physico‐mechanical properties of rubber/silica composites through new silane grafting

Das

Chattopadhyay

Dhanania³

et al. 2020

Polymer Engineering & Sci

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3‐Octanoylthio‐1‐propyltriethoxysilane (a new silane) grafted styrene butadiene rubber/ silica composites were prepared in the present work, where grafting weight percentage of the base rubber (0%, 2%, 4%, and 6%) and filler content of the composites (0, 5, 15, 35, and 50 phr) were varied to investigate dispersion of the filler in the rubber. A detailed quantitative study of morphology‐physical property relationship of the composites using dispersion degree parameter was carried out. Pronounced improvement of dispersion was observed with increasing grafting weight percentage of the base rubber. A mechanism of polymer to filler interaction was shown by Fourier transform infrared spectroscopy. The dispersion rate constant from the torque‐time curve increased with the grafting percentage. Bound rubber content and Payne effect measurement indicated improved rubber‐filler interaction for the grafted rubber compound. A relation between low strain modulus of the composites and grafting percentage was proposed. The nanoindentation studies gave further insight into the results. Other physico‐mechanical properties at different grafting weight percentages at particular filler loading (50 phr) and at different filler loadings at a particular grafting weight percentage (4%) were evaluated. The improved mechanical and dynamic mechanical properties with increasing grafting weight percentage are an indication that this methodology could be used in green tire application.

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“…These composites showed the best mechanical and dynamic mechanical properties due to high polymer-filler interaction. Das et al 23,24 studied the effect of grafting of 3-octanoylthio-1-propylethoxysilane (0, 2, 4, and 6%) in SBR on the dispersion of silica (0, 5, 15, 35, and 50 phr) in the rubber and the mechanical and dynamic mechanical properties of the filled compounds.…”

Section: Introductionmentioning

confidence: 99%

Improved tire tread compounds using functionalized styrene butadiene rubber‐silica filler/hybrid filler systems

Mazumder

Chanda

Bhattacharyya

et al. 2021

J of Applied Polymer Sci

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Automotive industry is currently looking for an eco-friendly tire with low rolling resistance coefficient (RRc), better traction, wear resistance, and fatigue properties. Presently, solution styrene-butadiene rubber (SSBR)-silica systems are pursued for balancing between traction and RRc. However, the interaction between SSBR and silica is not enough to give satisfactory results. Functionalized-SSBR (FSSBR) leads to better rubber-silica interaction due to introduction of polar groups in the polymer chain. The present study investigates the influence of FSSBR, highly dispersible (HD) silica, and its hybrid filler systems with organically modified nanoclay (ONC) and exfoliated graphene nanoplatelet (xGnP). Both M H , and Δtorque were higher for the FSSBR-HD silica compound (S1) with the lowest change in storage modulus (ΔG') value, due to higher polymer-filler interaction. S1 exhibited 16% ice traction and 12% wet traction improvement with 29% lower rolling resistance over SSBR-silica compound. S1 showed the best wet traction rating and wear resistance. Replacing small portion of silica by ONC and xGnP improved the properties further. At 5 phr of nanofiller, TEM images revealed well-dispersed nanofillers in the FSSBR matrix. The xGnP compound showed the least crack growth. For both the cases, abradability decreased with higher nanofiller amount, due to better reinforcement of the rubber.

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Reactive grafting of 3-octanoylthio-1-propyltriethoxysilane in styrene butadiene rubber: Characterization and its effect on silica reinforced tire composites

Cited by 18 publications

References 33 publications

Nonlinear fracture assessment and nanomechanical deformation of elastomeric composites: Development of finite element model and experimental validation

Nonlinear fracture assessment and nanomechanical deformation of elastomeric composites: Development of finite element model and experimental validation

Improved dispersion and physico‐mechanical properties of rubber/silica composites through new silane grafting

Improved tire tread compounds using functionalized styrene butadiene rubber‐silica filler/hybrid filler systems

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