|dc.description.abstract||Polymeric coating research requires advanced spectroscopic techniques to perform
more efficient and detailed analysis in order to improve knowledge on the component
distribution and the degradation of functional groups in the coating. In this work, the
advanced non-destructive Step-scan Photoacoustic (SSPA) FTIR and Confocal Raman
Microscopy (CRM) techniques were developed and applied to the component
distribution studies and degradation studies of polyester/melamine based coil coating.
The results show that both techniques are very suitable to carry out both qualitative
and quantitative analyses.
The degradation of polyester/melamine coil coating exposed in various environmental
conditions were studied in detail using the advanced SSPA-FTIR and CRM techniques;
the results clearly show that the coating degradation is highly dependent on the
weathering conditions. Acid rain was also found to significantly affect the coating
durability. Moreover, different pigments incorporated into the coating formulation
were also found to have a major impact on the coating durability.
With the help of the powerful CRM component distribution analysis function,
melamine enriched zones that were very likely to arise from the melamine
self-condensation during the curing process of coil coating were clearly observed in
the coatings. This finding confirms the hypothesis developed over 20 years in the coil
coating research field. Moreover, the durability of the melamine enriched zones was
also investigated in this work.||en_US
|dc.title||Advanced Spectroscopic Studies into the Degradation of Polyester Melamine Coil Coatings before and after Exposure to Natural and Accelerated Weathering Tests||en_US
|dc.rights.holder||The copyright of this thesis rests with the author and no quotation from it or information derived from it may be published without the prior written consent of the author||