Investigation into the efficacy of CO2 lasers for modifying the factors influencing biocompatibility of a polymeric biomaterial in comparison with an F2 excimer laser

D. G. Waugh, J. Lawrence, C. D. Walton, R. B. Zakaria

Research output: Contribution to conferencePaper

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 CO2 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 O2 increased and decreased for the CO2 and F2 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 CO2 laser irradiated samples, is due to a change in wetting regime as a result of the surface pattern produced.

Original languageEnglish
Pages295-304
Number of pages10
Publication statusPublished - 1 Dec 2008
Externally publishedYes
Event27th International Congress on Applications of Lasers and Electro-Optics - Temecula, United States
Duration: 20 Oct 200823 Oct 2008
Conference number: 27th

Conference

Conference27th International Congress on Applications of Lasers and Electro-Optics
Abbreviated titleICALEO 2008
CountryUnited States
CityTemecula
Period20/10/0823/10/08

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Waugh, D. G., Lawrence, J., Walton, C. D., & Zakaria, R. B. (2008). Investigation into the efficacy of CO2 lasers for modifying the factors influencing biocompatibility of a polymeric biomaterial in comparison with an F2 excimer laser. 295-304. Paper presented at 27th International Congress on Applications of Lasers and Electro-Optics, Temecula, United States.