Effect of clay modification on the mechanism of local deformations in PA6 nanocomposites

Zita Dominkovics, Elodie Naveau, Christine Jérôme, Jõzsef Hári, Károly Renner, János Mõczõ, Michaël Alexandre, Béla Pukánszky

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4 Citations (Scopus)

Abstract

PA nanocomposites are prepared from clays organophilized with a phosphonium and an ammonium salt, and sodium montmorillonite is used as reference. The analysis of mechanical and micromechanical properties of the composites reveal that several micromechanical deformation processes occur in the PA/MMT composites. The matrix cavitates at relatively small stress. Processes related to non-exfoliated clay structural units are initiated at larger stresses. Sound is emitted mainly by the fracture of particles, but debonding may also occur. The plastic deformation of the matrix dominates at larger stresses and deformations. The various local deformations are independent of each other and composite properties are not determined by silicate related processes but by the deformation of the matrix.

Original languageEnglish
Pages (from-to)796-805
Number of pages10
JournalMacromolecular Materials and Engineering
Volume298
Issue number7
DOIs
Publication statusPublished - Jul 1 2013

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Keywords

  • acoustic emission
  • mechanical properties
  • microdeformation
  • nanocomposites
  • structure

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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