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Journal of Materials Science

, Volume 45, Issue 12, pp 3336–3343 | Cite as

Organoclay/thermotropic liquid crystalline polymer nanocomposites. Part IV: organoclay of comparable size to fully extended TLCP molecules

  • Youhong Tang
  • Ping Gao
  • Lin Ye
  • Chengbi Zhao
  • Wei Lin
Article

Abstract

Organoclay with a size of 100–200 nm was successfully prepared by a combination of wet ball milling and ultrasonication methods without changing its physico-chemical properties. A nanocomposite (TC3 FS) of 3.0 wt% treated organoclay in thermotropic liquid crystalline polymer (TLCP) was prepared. The treated organoclay was of comparable size to the fully extended TLCP molecules and it formed weak interactions with them. The liquid crystallinity of the TLCP was not greatly affected by the treated organoclay at the nematic temperature of the TLCP. Rheological characterization demonstrated that the viscosity of the TC3 FS was less than one order of magnitude higher than that of the TLCP in the linear viscoelastic region, and the steady shear viscosity of the two materials was comparable in steady shear experiments. Thus, TC3 FS is a promising viscosity reduction agent for high molecular mass polyethylene (HMMPE), functioning similarly to TLCP. The 1.0 wt% TC3 FS in HMMPE has more efficient viscosity reduction ability than the 1.0 wt% TLCP in HMMPE, with lower yielding stress and yield-starting shear rate, as well as a narrower yield shear rate region. The viscosity reduction ability of the TLCP was enhanced by the treated organoclay.

Keywords

Shear Rate Liquid Crystallinity Polarize Optical Microscopy Linear Viscoelastic Region Viscosity Reduction 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgement

Y. H. Tang and P. Gao gratefully acknowledge the Research Grant Council of Hong Kong (Grant number HKUST6256/02) for financial support.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Youhong Tang
    • 1
    • 2
  • Ping Gao
    • 1
  • Lin Ye
    • 2
  • Chengbi Zhao
    • 3
  • Wei Lin
    • 3
  1. 1.Department of Chemical and Biomolecular EngineeringThe Hong Kong University of Science and TechnologyHong KongChina
  2. 2.Centre for Advanced Materials Technology, School of Aerospace, Mechanical and Mechatronic EngineeringThe University of SydneySydneyAustralia
  3. 3.Centre for Advanced Marine Materials, School of Civil Engineering and TransportationSouth China University of TechnologyGuangzhouChina

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