Journal
APPLIED SURFACE SCIENCE
Volume 308, Issue -, Pages 311-315Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2014.04.163
Keywords
PMMA; Large pulsed electron beam (LPEB); Light transmission rate; Surface roughness
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Funding
- Human Resource Training Project for Regional Innovation - National Research Foundation (NRF) of Korea [2012H1B8A2026133]
- development program of local science
- Ulsan Metropolitan City and Ministry of Science, ICT and Future Planning and Development of the High Speed Ecological Finishing Process for precision and micro pattern products [20100110038656]
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A large pulsed electron beam (LPEB) was used to modify the surface properties of a poly( methyl methacrylate) (PMMA) sample. Translucent PMMA samples were fabricated using a conventional milling process. Then, the surface was irradiated with an energy density of 2 to 4 J/cm(2) by a large electron beam, 60 mm in size. Surface property characterization of the irradiated PMMA samples was performed using an ultraviolet-visible-near infrared (UV-vis-NIR) spectrophotometer, atomic force microscopy, a form tracer, and drop-shape analysis and compared with the non-irradiated surface. It was observed that the visible light transmission of the prepared PMMA sample was enhanced by 40%. The surface roughness of the PMMA sample after irradiation was also reduced by 30%, compared with the baseline case with no irradiation. Additionally, the water contact angle increased as the number of LPEB shots increased. (C) 2014 Elsevier B.V. All rights reserved.
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