Surface morphological modification of crosslinked hydrophilic co-polymers by nanosecond pulsed laser irradiation

Surface morphological modification of crosslinked hydrophilic co-polymers by nanosecond pulsed... Article history: This work reports an investigation of the surface modifications induced by irradiation with nanosecond Received 7 December 2015 laser pulses of ultraviolet and visible wavelengths on crosslinked hydrophilic co-polymeric materi- Received in revised form 3 February 2016 als, which have been functionalized with 1-vinylimidazole as a co-monomer. A comparison is made Accepted 4 February 2016 between hydrogels differing in the base co-monomer (N,N-dimethylaminoethyl methacrylate and N- Available online 6 February 2016 [3-(dimethylamino)propyl] methacrylamide) and in hydration state (both swollen and dried states). Formation of craters is the dominant morphological change observed by ablation in the visible at 532 nm, Keywords: whereas additional, less aggressive surface modifications, chiefly microfoams and roughness, are devel- Surface morphological modification oped in the ultraviolet at 266 nm. At both irradiation wavelengths, threshold values of the incident laser UV–vis nanosecond pulsed laser irradiation fluence for the observation of the various surface modifications are determined under single-pulse laser Laser ablation craters irradiation conditions. It is shown that multiple-pulse irradiation at 266 nm with a limited number of laser Laser foaming Crosslinked hydrophilic co-polymers shots can be used alternatively for generating a regular microfoam layer at the surface of dried hydro- Swell/dried hydrogels gels based http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Applied Surface Science Elsevier

Surface morphological modification of crosslinked hydrophilic co-polymers by nanosecond pulsed laser irradiation

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Publisher
Elsevier
Copyright
Copyright © 2016 Elsevier B.V.
ISSN
0169-4332
eISSN
1873-5584
D.O.I.
10.1016/j.apsusc.2016.02.047
Publisher site
See Article on Publisher Site

Abstract

Article history: This work reports an investigation of the surface modifications induced by irradiation with nanosecond Received 7 December 2015 laser pulses of ultraviolet and visible wavelengths on crosslinked hydrophilic co-polymeric materi- Received in revised form 3 February 2016 als, which have been functionalized with 1-vinylimidazole as a co-monomer. A comparison is made Accepted 4 February 2016 between hydrogels differing in the base co-monomer (N,N-dimethylaminoethyl methacrylate and N- Available online 6 February 2016 [3-(dimethylamino)propyl] methacrylamide) and in hydration state (both swollen and dried states). Formation of craters is the dominant morphological change observed by ablation in the visible at 532 nm, Keywords: whereas additional, less aggressive surface modifications, chiefly microfoams and roughness, are devel- Surface morphological modification oped in the ultraviolet at 266 nm. At both irradiation wavelengths, threshold values of the incident laser UV–vis nanosecond pulsed laser irradiation fluence for the observation of the various surface modifications are determined under single-pulse laser Laser ablation craters irradiation conditions. It is shown that multiple-pulse irradiation at 266 nm with a limited number of laser Laser foaming Crosslinked hydrophilic co-polymers shots can be used alternatively for generating a regular microfoam layer at the surface of dried hydro- Swell/dried hydrogels gels based

Journal

Applied Surface ScienceElsevier

Published: Apr 30, 2016

References

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