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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Waugh, David
Coventry University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2023Porous Cellulose Thin Films as Sustainable and Effective Antimicrobial Surface Coatingscitations
- 2023Porous Cellulose Thin Films as Sustainable and Effective Antimicrobial Surface Coatings.
- 2022Influence of Heat Input on Microstructure and Mechanical Properties of Gas Tungsten Arc Welded HSLA S500MC Steel Jointscitations
- 2021Micro-machining of diamond, sapphire and fused silica glass using a pulsed nano-second Nd:YVO4 lasercitations
- 2019Altering the wetting properties of orthopaedic titanium alloy (Ti–6Al–7Nb) using laser shock peeningcitations
- 2014Predominant and generic parameters governing the wettability characteristics of selected laser-modified engineering materialscitations
- 2011The enhancement of biomimetic apatite coatings on a nylon 6,6 biopolymer by means of KrF excimer laser surface treatment
- 2008Investigation into the efficacy of CO2 lasers for modifying the factors influencing biocompatibility of a polymeric biomaterial in comparison with an F2 excimer laser
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document
Investigation into the efficacy of CO2 lasers for modifying the factors influencing biocompatibility of a polymeric biomaterial in comparison with an F2 excimer laser
Abstract
Enhancement of the biocompatibility of a material by means of laser radiation has been amply demonstrated previously. Due to efficient absorption of the energy, short wavelengths and energies per pulse, polymers are usually processed using UV lasers, but the processing of polymers with IR lasers has also been demonstrated previously. In this work a comparative study for the surface modification of nylon 6,6 has been conducted in order to vary the parameters driving biocompatibility (surface topography, hydrophobic reactions, hydrophilic reactions and surface chemistry) using CO<sub>2</sub> and excimer lasers. Topographical changes were analysed using white light interferometry which indicated that both laser systems could be implemented for modifying the topography of nylon 6,6. Variations in the surface chemistry were evaluated using EDX and XPS analysis and showed that the O<sub>2</sub> increased and decreased for the CO<sub>2</sub> and F<sub>2</sub> laser irradiated samples, respectively. Modification of the hydrophobic and hydrophilic reactions was quantified by measuring the contact angle, which was found to increase in all instances for both laser systems. It is proposed that the increase in contact angle, especially for the CO<sub>2</sub> laser irradiated samples, is due to a change in wetting regime as a result of the surface pattern produced.