The effects of concentrations of ZnO nanoparticles on dewetting suppression of PS thin films

Authors

  • J Thapoung Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok
  • K Tasurin Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok
  • N Traiphol Laboratory of Advanced Chromic Materials, Department of Materials Science, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand and Center of Excellence on Petrochemical and Materials Technology, Chulalongkorn University, Bangkok 10330, Thailand
  • N Pangpaiboon Department of Industrial Physics and Medical Instrumentation, Faculty of Applied Science, King Mongkut’s University of Technology North Bangkok

Abstract

Thin polymer films are widely used in industry, such as protective coating, lubricant and electrical insulator, because of their specific properties. However, thin film in nanoscale tends to separate from substrate; this phenomenon is called Dewetting. In this research, a solution of polystyrenes with a concentration of 0.3 wt% in toluene, providing ~ 21 nm polymeric film, was prepared. Zinc-oxide nanoparticles were added in a polystyrene solution as a Dewetting inhibitor. The concentrations of zinc-oxide were varied from 0 – 1.0 wt%. Thin films were cast by a spin casting machine. After annealing at 90˚C in a vacuum oven for various times, the film morphologies were studied by using optical, scanning electron, and atomic force microscopes. The surface energies of the films were calculated by contact angle measurement. We found that the addition of zinc-oxide nanoparticles at 0.3 wt% is an appropriate concentration to inhibit Dewetting in PS films which have a molecular weight of 35,000 g·mol-1.

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Published

2019-01-10

How to Cite

[1]
J. Thapoung, K. Tasurin, N. Traiphol, and N. Pangpaiboon, “The effects of concentrations of ZnO nanoparticles on dewetting suppression of PS thin films”, J. Met. Mater. Miner., vol. 28, no. 2, Jan. 2019.

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Original Research Articles