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Forced Assembly by Multilayer Coextrusion to Create Oriented Graphene Reinforced Polymer Nanocomposites
Polymer (2014)
  • Xiguang Li, Texas Tech University
  • Greg B. McKenna, Texas Tech University
  • Guillaume Miquelard-Garnier
Abstract
A potential advantage of platelet-like nanofillers as nanocomposite reinforcements is the possibility of
achieving two-dimensional stiffening through planar orientation of the platelets. The ability to achieve
improved properties through in-plane orientation of the platelets is a challenge and, here, we present the
first results of using forced assembly to orient graphene nanoplatelets in poly(methyl methacrylate)/
polystyrene (PMMA/PS) and PMMA/PMMA multilayer films produced through multilayer coextrusion.
The films exhibited a multilayer structure made of alternating layers of polymer and polymer containing
graphene as evidenced by electron microscopy. Significant single layer reinforcement of 118% at a concentration
of 2 wt % graphene was achieveddhigher than previously reported reinforcement for
randomly dispersed graphene. The large reinforcement is attributed to the planar orientation of the
graphene in the individual polymer layers. Anisotropy of the stiffening was also observed and attributed
to imperfect planar orientation of the graphene lateral to the extrusion flow.
Keywords
  • graphene,
  • orientation,
  • nanocomposites,
  • polymer processing
Publication Date
Winter January 5, 2014
Citation Information
Xiguang Li, Greg B. McKenna and Guillaume Miquelard-Garnier. "Forced Assembly by Multilayer Coextrusion to Create Oriented Graphene Reinforced Polymer Nanocomposites" Polymer Vol. 55 (2014) p. 248
Available at: http://works.bepress.com/xiguang-luc-li/4/