Nanoclay assisted strengthening of the fiber/matrix interface in functionally filled polyamide 6 composites

Isitman N. A., AYKOL M., KAYNAK C.

COMPOSITE STRUCTURES, vol.92, no.9, pp.2181-2186, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 92 Issue: 9
  • Publication Date: 2010
  • Doi Number: 10.1016/j.compstruct.2009.09.007
  • Journal Name: COMPOSITE STRUCTURES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2181-2186
  • Keywords: Nanocomposite, Interface, Short glass fiber, Nanoclay, Polyamide 6, Flame retardant, FIBER-REINFORCED POLYAMIDE-6, X-RAY-DIFFRACTION, GLASS-FIBER, SILICATE NANOCOMPOSITES, MECHANICAL-PROPERTIES, DISCONTINUOUS FIBERS, FLAME-RETARDANT, PART II, MATRIX, THERMOPLASTICS
  • Middle East Technical University Affiliated: Yes

Abstract

This study describes the contribution of a nano-filler, i.e. an organically modified layered silicate, in respect of the fiber/matrix interfacial shear strength (IFSS) of a short glass fiber reinforced and functionally filled polyamide 6, given an exfoliated nanocomposite morphology. Apparent IFSS values are determined using a continuum micromechanical method. Polymer chains in the nanoconfined environment of an exfoliated clay nanocomposite are found to crystallize preferentially in the form of a specific crystalline phase with increased degree of crystallinity. Strong dependence of IFSS on polymer crystallinity is found which is related to enhanced shrinkage stresses associated with increased degree of crystallinity. (C) 2009 Elsevier Ltd. All rights reserved.