Ordered assemblies of clay nano-platelets

Tao Liu*, Biqiong Chen, Julian R G Evans

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

We demonstrate five methods of arranging smectite clay tactoids into layered arrangements as a part of the quest for the biomimetic simulation of nacre. Provided the clay is not fully exfoliated, the tactoids retain sufficient rigidity for alignment and we present micrographs which demonstrate these ordered structures. This paves the way for exploration of the high mineral filler end of polymer-clay nanocomposites which can approach the high aragonite volume fraction of nacre. The clay was dispersed in water without additives by ultrasonic agitation, cleaned by partial sedimentation and the resulting suspension was subjected to controlled phase separation by sedimentation, centrifugation, controlled rate slip casting, filtration and electrophoresis. Well-aligned parallel layers of platelets were obtained from all the five methods, the best stacking being associated with slip cast layers. Polyethylene oxide was incorporated into these well-aligned tactoids.

Original languageEnglish
Article number016005
JournalBioinspiration and Biomimetics
Volume3
Issue number1
DOIs
Publication statusPublished - 01 Mar 2008
Externally publishedYes

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Biotechnology
  • Molecular Medicine
  • Medicine(all)

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