Abstract
AbstractSummary: A method of depth profiling by AFM nanoindentations is developed for the characterisation of the heterogeneity of the mechanical properties of oxidised polymers. An increase or a decrease of the sample stiffness is measured close to the surface. A comparison with micro‐FTIR profiles and a knowledge of the photooxidation mechanism permit an interpretation of the chemical and physical changes and give new insights into the understanding of the ageing behaviour.Photooxidation profile of a TMPC film measured by AFM (•) and by micro‐FTIR (♦) after irradiation.imagePhotooxidation profile of a TMPC film measured by AFM (•) and by micro‐FTIR (♦) after irradiation.
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