ANALYSIS OF LIQUID MEDIATED CONTACT OF GLASS COLLOIDAL PARTICLE WITH POLYSTYRENE COATED SURFACE

Khurshid Ahmad, Abdus Saboor Ahmad, Muhammad Hassan, Zubair Ahmad, Xuezeng Zhao and Yunlu Pan
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Khurshid Ahmad: US Pakistan Center for Advanced Studies in Energy, University of Engineering and Technology, Peshawar, Pakistan
Abdus Saboor Ahmad: US Pakistan Center for Advanced Studies in Energy, University of Engineering and Technology, Peshawar, Pakistan
Muhammad Hassan: US Pakistan Center for Advanced Studies in Energy, University of Engineering and Technology, Peshawar, Pakistan
Zubair Ahmad: #x2020;Department of Mechatronics Engineering, University of Engineering and Technology, Peshawar, Pakistan
Xuezeng Zhao: #x2021;Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, and School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
Yunlu Pan: #x2021;Key Laboratory of Micro-Systems and Micro-Structures Manufacturing, Ministry of Education, and School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China

Surface Review and Letters (SRL), 2020, vol. 27, issue 02, 1-6

Abstract: Spin coating has been widely used for obtaining uniform thin polymeric coating over glass surfaces. Previous studies have shown that the thin-coated film can deform and bulge out upon immersion in liquid. Such deformations can affect various properties of the films. In this study, we have analyzed the interaction of glass colloidal particle and the polystyrene (PS) spin-coated surface immersed in deionized (DI) water. It was found that the glass colloidal particle interacts with the surface in dissimilar way at various locations on the surface. A sudden reduction in the forces was also observed at different locations on the same surface. The separation distances at which the sudden change in the force occurred was closer to the height of the spherical domains. Therefore, the change could be attributed to the presence of blisters on the surface formed due to permeation of water into the thin film-substrate interface.

Keywords: Thin film; polystyrene; nanobubbles; blisters; colloidal probe atomic force microscopy (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0218625X19501014

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