A finite element method based comparative fracture assessment of carbon black and silica filled elastomers: Reinforcing efficacy of carbonaceous fillers in flexible composites

Goswami, Mohit; Ghosh, Moni Mahesh; Dalmiya, Mahawat Singh; Sharma, Sujit; Ghorai, Sanjoy Kumar; Chattopadhyay, Santanu

doi:10.1016/j.polymertesting.2020.106856

Cited by 15 publications

(1 citation statement)

References 35 publications

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“…The modification of silica filler with silane coupling agents could not help much for the CPI matrix in truck–bus tire application. However, a similar method helped to achieve the respective properties of the synthetic rubber matrix in car tire application. − …”

Section: Introductionmentioning

confidence: 99%

Pretreatment of Hevea Latex by Sorbitol: Improving the Efficacy of Silica Dispersion by a Biomimetic Approach

Bera

Manna

Ganguly

et al. 2022

ACS Appl. Polym. Mater.

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Incorporating a high amount of silica in cis-1,4polyisoprene (CPI) by conventional dry mixing is a Herculean task. A biomimicking approach is adopted herein through incorporation of a bio-based sugar alcohol (sorbitol) into the CPI latex, which creates protein−carbohydrate interactions in the latex called protein−sugar conjugates. These treatments unveiled a significant improvement in key properties of the CPI vulcanizates, like >15% reduction in tan δ at a high temperature, besides better dispersion as evident from morphological studies. The protein and phospholipid ends were cleaved by respective enzymes for a clearer percipience of their individual effects on compounds' key properties. The molecular dynamics study reveals a faster convergence of root-mean-square deviation (RMSD) and maximum radius of gyration (R g ) values of the sorbitol-treated latex, confirming a stable conformation of the CPI matrix in the presence of silica. Subsequently, a greater number of hydrogen bonds between the functional groups of protein and sorbitol demonstrates successful blocking of the functional groups (protein−sugar conjugates) of CPIs' unwanted substances.

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Section: Introductionmentioning

confidence: 99%

Pretreatment of Hevea Latex by Sorbitol: Improving the Efficacy of Silica Dispersion by a Biomimetic Approach

Bera

Manna

Ganguly

et al. 2022

ACS Appl. Polym. Mater.

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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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The variation of structure and property of sorbitol-treated NR vulcanizates with increasing the silica loading

et al. 2023

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A finite element method based comparative fracture assessment of carbon black and silica filled elastomers: Reinforcing efficacy of carbonaceous fillers in flexible composites

Cited by 15 publications

References 35 publications

Pretreatment of Hevea Latex by Sorbitol: Improving the Efficacy of Silica Dispersion by a Biomimetic Approach

Pretreatment of Hevea Latex by Sorbitol: Improving the Efficacy of Silica Dispersion by a Biomimetic Approach

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

The variation of structure and property of sorbitol-treated NR vulcanizates with increasing the silica loading

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