Influence of Twin-Screw Extrusion on The Dispersion of Nanoclay in Vinylester Composites


  • Bommanna K Visvesvaraya Technological University
  • Radha H R
  • Yuvaraja Naik
  • Mahendra K V
  • A Hareesh



 Twin-Screw Extrusion,  Nanoclay,,  Dispersion,,  SEM,,  XRD


This paper reports the dispersion of nanoclay in vinylester using co-rotating twin screw extrusion and ultrasonication for preparing nanoclay/vinylester gel coat. Two sets MMT/vinylester specimens, namely Type 1 and Type 2 were prepared for comparative studies. While Type 1 specimens were prepared using ultrasonication only, Type 2 specimens were prepared using both ultrasonication and twin-screw extrusion. Type 2 specimens showed lower levels of nanoclay intercalation and higher levels of exfoliation.  By using the MMT/vinylester gel coat so prepared by the two different routes, MMT/vinylester/glass specimens were fabricated and tested for mechanical properties. Type 2 based nanocomposite specimens showed greater values of ultimate tensile strength, flexural strength, interlaminar shear strength and impact strength. Scanning Electron Micrographs (SEM) of tensile fractured Type 2 based specimens showed less agglomeration of nanoclay than that of Type 1 based specimens.

Author Biographies

Bommanna K, Visvesvaraya Technological University

Department of Mechanical Engineering
Ph.D Research Scholar
Visvesvaraya Technological University
Karnataka, India

Radha H R

Department of Chemical Engineering
Research Scientist, Sarojaayudh Innovation Cell
Karnataka, India

Yuvaraja Naik

Department of Mechanical Engineering
Assistant Professor
Presidency University, Karnataka, India

Mahendra K V

Department of Mechanical Engineering
Professor, R R Institute of Technology
Karnataka, India

A Hareesh

Department of Mechanical Engineering
Associate Professor
ACS College of Engineering
Karnataka, India


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How to Cite

K, B., H R, R., Naik, Y., K V, M., & Hareesh, A. (2021). Influence of Twin-Screw Extrusion on The Dispersion of Nanoclay in Vinylester Composites. American Journal of Agricultural Science, Engineering and Technology, 5(2), 260–267.