Abstract
A polyester-melamine coating was exposed to accelerated weathering (i.e., cycle of high UV followed by condensation). The degradation depth profile in the coating was investigated using non-destructive step-scan photoacoustic fourier transform infrared spectroscopy (SSPA-FTIR) and confocal Raman microscopy (CRM). The degradation at different sampling depths was then evaluated following the method developed in this work. The results obtained using the two techniques correlate well with each other and suggest coating surface is more likely to undergo moisture enhanced photo-oxidation degradation. This may be due to the higher moisture level near the coating surface. It is also found that melamine side chains degrade prior to the melamine ring. The quantification methods developed in this work were found to be very suitable to monitor the degradation depth profile in polymeric coatings.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
