The effect of silane coupling agent on iron sand for use in magnetorheological elastomers Part 1: Surface chemical modification and characterization
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Accepted version, 1.079Mb
Citation
Export citationPickering, K. L., Shuib, R. K., & Ilanko, S. (2015). The effect of silane coupling agent on iron sand for use in magnetorheological elastomers Part 1: Surface chemical modification and characterization. Composites Part A: Applied Science and Manufacturing, 68, 377–386. http://doi.org/10.1016/j.compositesa.2014.10.005
Permanent Research Commons link: https://hdl.handle.net/10289/10274
Abstract
Bis-(3-triethoxysilylpropyl) tetrasulphane (TESPT) was employed for surface modification of iron sand for use in magnetorheological elastomers (MREs). The amount of TESPT was varied at five levels (2, 4, 6, 8 and 10 wt%) relative to iron sand content to assess the optimum amount of coupling agent for interfacial bonding and damping performance. Evidence that coupling had occurred between iron sand and TESPT was identified by Raman Spectroscopy and the grafting percentage was determined by thermogravimetric analysis. Subsequently, isotropic MREs containing unmodified and modified iron sand particles and natural rubber were prepared. Crosslink density assessment by swelling testing provided evidence that the tetrasulphane group of TESPT formed crosslinks with the rubber chains. The results exhibited the advantages of TESPT as a coupling agent between iron sand particles and rubber and also revealed that 6% TESPT content produced the highest crosslink density. The effects of the amount of TESPT on dynamic mechanical properties the morphological characteristics of the MREs were also investigated.
Date
2015-01-01Type
Publisher
Elsevier
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This is an author’s accepted version of an article published in the journal: Composites Part A: Applied Science and Manufacturing. © 2015 Elsevier.