Dr. Prabakaran Poopalan Profile

Dr. Prabakaran Poopalan

Professor at Univ Malaysia Perlis

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Proceedings Article | 7 December 2013 Paper

Hydrophobicity studies of polymer thin films with varied CNT concentration

N. H. M. Rodzi, M. M. Shahimin, P. Poopalan, B. Man, M. N. M. Nor

Proceedings Volume 8923, 89235G (2013) https://doi.org/10.1117/12.2034283

KEYWORDS: Thin films, Magnesium, Polymer thin films, Glasses, Surface roughness, Carbon nanotubes, Microscopes, Transparency, Carbon, Polymers

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Surface functionalization studies for re-creating a ‘Lotus Leaf’ effect (superhydrophobic) have been carried out for the past decade; looking for the material which can provide high transparency, low energy surface and high surface roughness. Fabrication of polydimethylsiloxane (PDMS) and multiwalled carbon nanotubes (MWCNT) hybrid thin film variations on glass to produce near-superhydrophobic surfaces is presented in this paper. There are three important parameters studied in producing hydrophobic surfaces based on the hybrid thin films; concentration of PDMS, concentration of MWCNT and droplet sizes. The study is carried out by using PDMS of varied cross linker ratio (10:1, 30:1 and 50:1) with MWCNT concentration of 1mg, 10mg and 15mg for 0.5 μl, 2.0 μl, 5.0 μl and 10 μl droplet sizes. The resulting hybrid thin films show that hydrophobicity increased with increasing cross linker ratio and MWCNT percentage in the PDMS solution. A near superhydrophobic surface can be created when using 15 mg of MWCNT with 50:1 cross linker ratio PDMS thin films, measured on 10 μl droplet size. The hybrid thin films produced can be potentially tailored to the application of biosensors, MEMS and even commercial devices.

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