Title :
Wettability of the PMMA surface caused by its polarization due to UV radiation
Author :
Dekhtyar, Y. ; Griva, A. ; Lancere, L. ; Andersons, B. ; Sansonetti, E.
Author_Institution :
Inst. of Biomed. Eng. & Nanotechnol., Riga Tech. Univ., Riga, Latvia
Abstract :
Wettability of the poly methyl methacrylate (PMMA) surface defines its biocompatibility being essential factor for biomedical applications. The processed surface degrades in time therefore the prostheses/lens should be repaired to keep the patient at a high life quality level. However the most common methods can be considered as sophisticated (plasma treatment, laser treatment, etc.). The research presents novel result on the PMMA surface wettability engineering by means of non-ionizing ultraviolet radiation (200-400nm). Results (electron work function (φ), photoelectron emission spectra, optical absorption) show alteration from hydrophobic to hydrophilic surface behaviour. Both the surface (photoelectron emission) and the bulk (optical absorption) interacting centres were influenced by radiation showing maximum effect after 45 minutes of irradiation.
Keywords :
biomedical materials; hydrophilicity; hydrophobicity; photoelectron spectra; polymers; surface energy; surface treatment; ultraviolet radiation effects; ultraviolet spectra; visible spectra; wetting; work function; PMMA surface; UV radiation; biocompatibility; biomedical applications; bulk interacting centres; electron work function; high life quality level; hydrophilic surface; hydrophobic surface; laser treatment; lens; nonionizing ultraviolet radiation; optical absorption; photoelectron emission spectra; plasma treatment; polarization; polymethyl methacrylate surface; prostheses; surface degradation; surface interacting centres; time 45 min; wavelength 200 nm to 400 nm; wettability; Absorption; Materials; Optical surface waves; Radiation effects; Surface treatment; Surface waves; Wavelength measurement; UV radiation; biocompatibility; poly methyl methacrylate; surface free energy;
Conference_Titel :
Applications of Ferroelectrics held jointly with 2012 European Conference on the Applications of Polar Dielectrics and 2012 International Symp Piezoresponse Force Microscopy and Nanoscale Phenomena in Polar Materials (ISAF/ECAPD/PFM), 2012 Intl Symp
Conference_Location :
Aveiro
Print_ISBN :
978-1-4673-2668-1
DOI :
10.1109/ISAF.2012.6297719
