Evolution of microdefects in polylactide coatings under ultraviolet exposure
DOI:
https://doi.org/10.20535/iwccmm2026357870Ключові слова:
polylactide, ultraviolet degradation, microcracks, residual stresses, photooxidation, surface morphology, polymer coatingsАнотація
This work investigates the evolution of microdefects in polylactide (PLA) coatings under ultraviolet exposure. UV-induced photooxidation leads to increased surface polarity, enhanced wettability, and formation of a low-molecular-weight phase. Scanning electron microscopy reveals the development of microcracks associated with shrinkage and originating in regions of residual stress. The results highlight the relationship between processing-induced heterogeneities and defect formation in PLA coatings.
Посилання
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