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Materials 2013, 6(7), 2873-2891; doi:10.3390/ma6072873
Article

Polymeric Materials Reinforced with Multiwall Carbon Nanotubes: A Constitutive Material Model

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1 Tecnológico de Monterrey, Av. Eugenio Garza Sada 2501 Sur Monterrey CP64849, Mexico 2 Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna Hermosillo 140 Saltillo, Coahuila CP25250, Mexico
* Author to whom correspondence should be addressed.
Received: 12 April 2013 / Revised: 3 June 2013 / Accepted: 24 June 2013 / Published: 16 July 2013
(This article belongs to the Special Issue Constitutive Behavior of Composite Materials)
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Abstract

In this paper we have modified an existing material model introduced by Cantournet and co-workers to take into account softening and residual strain effects observed in polymeric materials reinforced with carbon nanotubes when subjected to loading and unloading cycles. In order to assess the accuracy of the modified material model, we have compared theoretical predictions with uniaxial extension experimental data obtained from reinforced polymeric material samples. It is shown that the proposed model follows experimental data well as its maximum errors attained are lower than 2.67%, 3.66%, 7.11% and 6.20% for brominated isobutylene and paramethylstyrene copolymer reinforced with multiwall carbon nanotubes (BIMSM-MWCNT), reinforced natural rubber (NR-MWCNT), polybutadiene-carbon black (PB-CB), and PC/ABS reinforced with single-wall carbon nanotubes (SWCNT), respectively.
Keywords: reinforced polymers; carbon nanotubes; softening effect; constitutive model reinforced polymers; carbon nanotubes; softening effect; constitutive model
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Córdova, R.K.; Elías-Zúiga, A.; Elizalde, L.E.; Siller, H.R.; Sánchez, J.A.; Rodríguez, C.A.; Ortega, W. Polymeric Materials Reinforced with Multiwall Carbon Nanotubes: A Constitutive Material Model. Materials 2013, 6, 2873-2891.

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