Wettability characteristics variation of nylon 6,6 by means of CO2 laser generated surface patterns

D. G. Waugh, J. Lawrence

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

CO2 lasers can be seen to lend themselves to materials processing applications. These types of lasers have been used extensively in research and industry with the work carried out being well documented. This work investigated the surface modification of nylon 6,6 with a CO2 laser in order to vary wettability characteristics. The wettability characteristics of the nylon 6,6 were modified by generating a number of patterns of various topography on the surface using the CO2 laser. Thereafter the as-received and modified surfaces were analysed using white light interferometry to quantify the topographical changes. Any changes in the chemical composition of the surfaces were explored with EDX and XPS analysis. To quantify the wettability characteristics as a function of laser irradiation, contact angles where determined using a sessile drop device for each sample. In this way it was possible to determine the efficacy of the CO2 laser generated topographical patterns in terms of wettability characteristics modification. It has been proposed that the increase in contact angle for the laser irradiated samples is due to a change in wetting regime from Wenzel to Cassie-Baxter.
Original languageEnglish
Title of host publicationICALEO® 2008
Subtitle of host publication27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing
PublisherAIP Publishing
ISBN (Print)9780912035123
DOIs
Publication statusPublished - 1 Oct 2008
Externally publishedYes
Event27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing - Temecula, United States
Duration: 20 Oct 200823 Oct 2008

Conference

Conference27th International Congress on Laser Materials Processing, Laser Microprocessing and Nanomanufacturing
Abbreviated titleICALEO 2008
Country/TerritoryUnited States
CityTemecula
Period20/10/0823/10/08

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