Generic parameters governing the wettability characteristics of laser-modified nylon 6,6

Research output: Contribution to conferencePaper

Abstract

Wettability is an interesting subject which spans any discipline that takes into account any form of adhesion. As such, it is imperative to identify generic parameters that govern the wetting nature of materials. This paper details the use of CO2 and KrF excimer lasers to modify the surface of nylon 6,6 in order to modulate the wettability characteristics. White light interferometery allowed one to establish that the surface roughness (Ra) was dramatically increased by up to 4.5 uμm in comparison to the as-received sample. Using a sessile drop device it was determined for all samples that the polar component had a strong inverse relationship with the contact angle, θ. For the patterned samples an increase in θ indicated the likely formation of a mixed-state wetting regime and highlighted the significant influence of surface topography on θ. X-ray photoelectron spectroscopy determined that the surface oxygen content had increased by up to 5.7 %at. for all samples. Due to the highly modulated nature of θ over all samples it was concluded that surface oxygen content was not a dominant parameter; whereas the polar component and surface pattern were the most dominant parameters governing the wettability characteristics of the laser-surface-modified nylon 6,6.

Original languageEnglish
Pages1111-1120
Number of pages10
Publication statusPublished - 7 Dec 2011
Externally publishedYes
Event30th International Congress on Applications of Lasers and Electro-Optics - Orlando, United States
Duration: 23 Oct 201127 Oct 2011

Conference

Conference30th International Congress on Applications of Lasers and Electro-Optics
Abbreviated titleICALEO 2011
CountryUnited States
CityOrlando
Period23/10/1127/10/11

ASJC Scopus subject areas

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

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  • Cite this

    Waugh, D., & Lawrence, J. (2011). Generic parameters governing the wettability characteristics of laser-modified nylon 6,6. 1111-1120. Paper presented at 30th International Congress on Applications of Lasers and Electro-Optics, Orlando, United States.