A STUDY ON THE RELATION BETWEEN MORPHOLOGICAL AND CHEMICAL CHANGES AND WETTABILITY MODIFICATION OF POLYETHERSULFONE SURFACE AFTER IRRADIATION WITH A PULSED KrF LASER

Hedieh Pazokian and Mohammad Reza Rashidian Vaziri
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Hedieh Pazokian: Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute, Tehran, Iran
Mohammad Reza Rashidian Vaziri: Photonics and Quantum Technologies Research School, Nuclear Science and Technology Research Institute, Tehran, Iran

Surface Review and Letters (SRL), 2022, vol. 29, issue 02, 1-9

Abstract: Laser irradiation is used for surface modification of polymers aiming to improve their properties for different applications. The wettability of a polymeric surface can significantly affect its performance for biological applications. In this paper, the interaction of high-energy KrF laser photons in the two above- and below-threshold regimes with polyethersulfone polymer is studied. The role of morphological and chemical changes of the irradiated polymer and their correlation in the modification of the wetting property of this polymer is investigated. The obtained results show that the morphological parameter of surface roughness is the dominant mechanism in the below-threshold regime, while in the above-threshold region, the competition between this parameter and the carbonization amount of the surface determines the final hydrophilic response.

Keywords: Laser–matter interaction; polymers; polyethersulfone; hydrophilicity (search for similar items in EconPapers)
Date: 2022
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DOI: 10.1142/S0218625X22500238

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