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Surface nano/micro functionalization of PMMA thin films by 157 nm irradiation for sensing applications

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Surface nano/micro functionalization of PMMA thin films by 157 nm irradiation for sensing applications
Κεφαλάς, Αλκιβιάδης Κωνσταντίνος
Goustouridis, D.
Sanopoulou, M.
Σαραντοπούλου, Ευαγγελία
Chatzandroulis, S.
Raptis, I.
Manoli, K.
Κόλλια, Ζωή
Άρθρο σε επιστημονικό περιοδικό
2008-01-15
Laser irradiation at 157 nm of polymethylmethacrylate (PMMA) thin films induces major variations of polymer film thicknesses from sorption (absorption/desorption) of methanol and ethanol analytes in the gas phase as much as 400%, in comparison to the film thickness variation of the non-irradiated areas. The structural changes of irradiated areas involve scission of polymeric chains, cross-linking and formation of new bonds. In addition, 157 run induces surface and volume morphological changes in the nano/micro domain, with different shapes, depending on the irradiation conditions. The reversibility of the sorption processes suggests that the polymer swelling has its origin at the tendency of the system to increase its volume during sorption. The internal forces from sorption are higher than the weak dipole interactions between the polymer and the analytes and they are amplified following 157 nm irradiation. A simple qualitative model explains adequately the experimental results. 157 nm laser treatment forms the basis to engineer a novel class of polymer sensor arrays with enhanced detection efficiency of liquid/gas analytes.
AMSTERDAM
Φυσική (EL)
Χημεία (Γενικά) (EL)
Επιστήμη (Γενικά) (EL)
Τεχνολογία (Γενικά) (EL)
Technology (General) (EN)
Science (General) (EN)
Chemistry (General) (EN)
Physics (EN)
PMMA
hydrophobic
Materials Science, Coatings & Films
surface modification
polymer sensor
Physics, Condensed Matter
swelling
VUV polymer surface treatment
sorption
Chemistry, Physical
Physics, Applied
English
Elsevier BV, North-Holland
Applied Surface Science (formerly Known as Applications of Surface Science)
https://rightsstatements.org/page/InC/1.0/?language=en
© 2007 Elsevier B.V. All rights reserved.
© 2007 Elsevier B.V. All rights reserved. (EN)
National Hellenic Research Foundation (NHRF)
Helios - Repository of the National Hellenic Research Foundation (NHRF)



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