Dynamic mechanical properties of PMMA/oganoclay nanocomposite: Experiments and modeling

Rodrigue Matadi Boumbimba, Said Ahzi, Nadia Bahlouli, David Ruch, José Gracio

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Similarly to unfilled polymers, the dynamic mechanical properties of polymer/organoclay nanocomposites are sensitive to frequency and temperature, as well as to clay concentration. Richeton (2005, A Unified Model for Stiffness Modulus of Amorphous Polymers Across Transition Temperatures and Strain Rates, Polymer, 46, pp. 8194-8201) has recently proposed a statistical model to describe the storage modulus variation of glassy polymers over a wide range of temperature and frequency. In the present work, we propose to extend this approach for the prediction of the stiffness of polymer composites by using two-phase composite homogenization methods. The phenomenological law developed by Takayanagi, 1966, J. Polym. Sci., 15, pp. 263-281 and the classical bounds proposed by Voigt, 1928, Wied. Ann., 33, pp. 573-587 and Reuss and Angew, 1929, Math. Mech., 29, pp. 9-49 models are used to compute the effective instantaneous moduli, which is then implemented in the Richeton model (Richeton, 2005, A Unified Model for Stiffness Modulus of Amorphous Polymers Across Transition Temperatures and Strain Rates, Polymer, 46, pp. 8194-8201). This adapted formulation has been successfully validated for PMMA/cloisites 20A and 30B nanocomposites. Indeed, good agreement has been obtained between the dynamic mechanical analysis data and the model predictions of poly(methyl-methacrylate)/ organoclay nanocomposites.

Original languageEnglish
Article number030908
JournalJournal of Engineering Materials and Technology, Transactions of the ASME
Volume133
Issue number3
DOIs
Publication statusPublished - 2011
Externally publishedYes

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Keywords

  • micromechanical modeling
  • organoclay
  • PMMA
  • polymer nanocomposites
  • storage modulus

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

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