Journal of Materials Science

, Volume 43, Issue 18, pp 6057–6063 | Cite as

Influence of surface treatment on hybrid wollastonite-polyethylene composite resins for rotational moulding

  • Xiaowen YuanEmail author
  • Allan J. Easteal
  • Debes Bhattacharyya


The purpose of this research was to develop a reinforcing material for polyethylene-based composite manufacture by rotational moulding. Wollastonite, sisal fibres and PE are premixed by blending and compounding with a single screw extruder and then granulated to particles with diameter about 0.5 mm prior to rotational moulding, for which the mixture is placed in a mould that is heated from the outside to 250 °C for a period of about 10 min. Aminosilane was used as a surface treatment for wollastonite. It was found that incorporating wollastonite microfibres improved the tensile properties of the system. When wollastonite fibres were coated with aminosilane, the impact strength and processability were enhanced greatly. Sisal fibres were added to improve the impact properties. Scanning electron microscopy revealed good adhesion between the coated fibre reinforcement and the polyethylene matrix at the fracture surface. The mechanism of this phenomenon is discussed.


Impact Strength Coupling Agent Wollastonite Calcium Silicate Melt Flow Index 



The authors are grateful for the assistance of Mr Clive Bolt, and financial assistance from the Foundation for Research Science & Technology New Zealand.


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Xiaowen Yuan
    • 1
    Email author
  • Allan J. Easteal
    • 2
  • Debes Bhattacharyya
    • 1
  1. 1.Department of Mechanical EngineeringCentre for Advanced Composite Materials, University of AucklandAucklandNew Zealand
  2. 2.Department of ChemistryCentre for Advanced Composite Materials, University of AucklandAucklandNew Zealand

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