Development of magnetorheological elastomers based on Deproteinised natural rubber as smart damping materials

Ismail, Nik Intan Nik; Kamaruddin, Shamsul

doi:10.1063/1.5010487

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Thus, adding a plasticiser into an ENR 50 based MRE has significant effects on its physicochemical and rheological performance. Ismail and Kamaruddin [18] evaluated the dynamic properties of ENR 25 based MRE. The results suggested that ENR 25 based MRE exhibited the highest damping properties compared to MREs fabricated from NR, deproteinised rubber, polyisoprene, and butyl rubber under active and passive conditions.…”

Section: Introductionmentioning

confidence: 99%

Comprehensive study on physicochemical characteristics of magnetorheological elastomer featuring epoxidized natural rubber

Yusoff¹,

Yunus²,

Zaki³

et al. 2022

Smart Mater. Struct.

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The effect of the epoxidation level of Epoxidized Natural Rubber (ENR) on the physicochemical characteristics of Magnetorheological Elastomer (MRE) made from it was studied. MRE samples were fabricated by mixing ENR with additives and carbonyl iron particles (CIP), followed by vulcanisation at 150 °C for 30 minutes. The factors that are manipulated for this study include the epoxidation level of ENR, through the use of ENR 25 and ENR 50 as the polymer matrix, and the proportion of the components of the composite, through varying the amount of CIP added in the mixing step. The analysis was performed by measuring the physicochemical characteristics of the MRE, which include curing time, magnetisation, functional group composition, thermal stability, and morphology. The cure time (t90) of the MRE increased with increasing CIP content while the scorch time (ts2) decreased. Electron microscopy showed that the CIP were randomly distributed throughout the MRE samples, indicating an isotropic MRE. The MRE fabricated with ENR 25 and 70 wt% CIP had a considerably higher value of saturation magnetisation at 42.54 emu/g, whereas the MRE fabricated with ENR 50 and 70 wt% CIP had a saturation magnetisation of 40.80 emu/g. Hydrogen bonds were created between the epoxy bonds in the epoxidized rubber and the hydroxyl groups from the CIP and other additives. Thermogravimetric analysis indicated an improvement in thermal stability, as the addition of CIP delayed the thermal degradation of the MRE. The results showed that the epoxidation level of the natural rubber has a significant effect on the physicochemical characteristics of the MRE fabricated from it. Overall outcomes showed that both ENR 25 and ENR 50 could be used as an alternative matrix material for fabricating an MRE, with the choice falling on the application specification.

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Section: Introductionmentioning

confidence: 99%

Comprehensive study on physicochemical characteristics of magnetorheological elastomer featuring epoxidized natural rubber

Yusoff¹,

Yunus²,

Zaki³

et al. 2022

Smart Mater. Struct.

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Design and development of engineering component using natural rubber biocomposites

Patmanathan

Chai

Kamaruddin

2020

Materialwissenschaft Werkst

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The potential usage of natural rubber biocomposites in engineering products was investigated. The engineering product fabricated is a rubber bush which is widely used in the automobile industry. Three different types of rubber: 25 % mol epoxidised natural rubber, 50 % mol epoxidised natural rubber and deproteinised natural rubber reinforced with eggshell powder and oil palm fibres hybrid biofillers were studied. The mould flow simulation was carried out to study the flow of the rubber in an existing mould cavity. A thermogravimetric analysis was carried out on both the eggshell powder and oil palm fibres and it was observed that the eggshell powder is more stable thermally compared to the oil palm fibres. Static test was conducted to study the static stiffness properties. Dynamic test was also conducted to study the dynamic stiffness and the loss angle. The results of the tests showed promising mechanical properties of the 25 % mol epoxidised natural rubber biocomposites. Further research should be conducted on other biofillers that is capable of improving the properties of the rubber to replace the use of carbon black in the 25 % mol epoxidised natural rubber biocomposite.

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Review of current research progress related to magnetorheological elastomer material

Jaafar

Mustapha

2021

Journal of Materials Research and Technology

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Development of magnetorheological elastomers based on Deproteinised natural rubber as smart damping materials

Cited by 3 publications

References 7 publications

Comprehensive study on physicochemical characteristics of magnetorheological elastomer featuring epoxidized natural rubber

Comprehensive study on physicochemical characteristics of magnetorheological elastomer featuring epoxidized natural rubber

Design and development of engineering component using natural rubber biocomposites

Review of current research progress related to magnetorheological elastomer material

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