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Enhanced microactuation with magnetic field curing of magnetorheological elastomers based on iron–natural rubber nanocomposites

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Abstract

The incorporation of nanoparticles of iron in a natural rubber matrix leads to flexible magnetorheological (MR) materials. Rod-shaped MR elastomers based on natural rubber and nanosized iron have been moulded both with and without the application of an external magnetic field during curing. These MR elastomer rods and filler material were characterized by X-ray powder diffraction, scanning electron microscopy and transmission electron microscopy. Magnetic properties were investigated by using vibrating sample magnetometry. Microactuation studies were carried out by employing a laser Doppler vibrometer. It is seen that microactuation of field cured samples have been enhanced by two times when compared with that of zero field cured samples. The effect of alignment of magnetic particles during field-assisted curing was also studied by using a dynamic mechanical analyzer. A plausible model is put forwarded to explain the observed enhancement of actuation for field cured samples.

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Acknowledgements

MP Vasudevan acknowledges UGC, New Delhi, for teacher fellowship. MRA and PMS acknowledge DAE-IREL (File No. IRELTDC/SAO/08-09/3) for financial assistance. PMS acknowledges UGC, Government of India, for the financial assistance through the research fellowship in sciences for meritorious students (RFSMS).

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Authors and Affiliations

  1. Department of Physics, Cochin University of Science and Technology, Cochin, 682022, India

    M P VASUDEVAN, P M SUDEEP & M R ANANTHARAMAN

  2. Department of Physics, Sree Sankara Vidya Peetom College, Valayanchirangara, Cochin, 683556, India

    M P VASUDEVAN

  3. Department of Physics, Sultan Qaboos University, Muscat, P.O. Box 36, Code 123, Oman

    I A AL-OMARI

  4. Department of Polymer Science and Rubber Technology, Cochin University of Science and Technology, Cochin, 682022, India

    PHILIP KURIAN

  5. Department of Materials Science and Nanoengineering, Rice University, Houston, TX, 77005, USA

    P M AJAYAN

  6. TIFR Centre for Interdisciplinary Sciences, Hyderabad, 500075, India

    P M SUDEEP & T N NARAYANAN

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  1. M P VASUDEVAN
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Correspondence to M R ANANTHARAMAN.

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VASUDEVAN, M.P., SUDEEP, P.M., AL-OMARI, I.A. et al. Enhanced microactuation with magnetic field curing of magnetorheological elastomers based on iron–natural rubber nanocomposites. Bull Mater Sci 38, 689–694 (2015). https://doi.org/10.1007/s12034-015-0919-7

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  • DOI: https://doi.org/10.1007/s12034-015-0919-7

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