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Thermal, morphological, and mechanical characterization of novel carbon nanofiber-filled bismaleimide composites

Publication Type : Journal Article

Publisher : Wiley Online Library

Source : Journal of applied polymer science, Wiley Online Library, Volume 117, Number 4, p.2159–2167 (2010)

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Keywords : Fracture, Mechanical properties, Mixing, Nanocomposites, Thermogravimetric analysis

Campus : Coimbatore

School : Department of Aerospace Engineering, School of Engineering

Department : Aerospace

Year : 2010

Abstract : Novel carbon nanofiber (CNF) -filled bis- malemide composites were fabricated by a thermokinetic mixing method. The thermal and mechanical properties of composites containing 1 wt % and 2 wt % CNFs were investigated. Thermogravimetric analysis demonstrated that minimal improvement in thermal stability of the nanocomposites was obtained by the addition of CNFs. Dynamic mechanical analysis showed an increase in storage modulus (E′) and glass transition temperature (Tg) upon incorporation of nanofibers. Limiting oxygen index (LOI) has also been found to increase with incorporation of CNFs. Morphological studies of fractured surfaces of the composites has been carried out by scanning electron microscopy to determine the effect of fiber content and dispersion on the failure mechanism. In general, good dispersion was observed, along with agglomeration at some points and some fiber matrix interfacial debonding. A decrease in mechanical strength has been observed and debonding was found as the main failure mechanism. Further research outlook is also presented. © 2010 Wiley Periodicals, Inc.

Cite this Research Publication : M. I. Faraz, Shantanu Bhowmik, De Ruijter, C., Laoutid, F., Benedictus, R., Dubois, P., Page, J. V. S., and Jeson, S., “Thermal, morphological, and mechanical characterization of novel carbon nanofiber-filled bismaleimide composites”, Journal of applied polymer science, vol. 117, pp. 2159–2167, 2010.

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