Figure 7
The composite image presenting rectangular specimens beside a length scale, comparative bar charts of tensile strength, Young s modulus, and elongation at break, and infrared reflectance spectra versus wavenumber for samples N 5, N 5.1, N 5.2, and N 5.3, demonstrating progressive surface degradation, reduction in mechanical properties, and changes in hydroxyl and carbonyl related absorption features with increasing exposure.Picture of original vitrimer N5 sample and vitrimers samples after each cycle of reprocessing (a), mechanical characteristics (b) and FTIR spectra (c)