Effect of stabilizer and pigment on photodegradation of polypropylene as revealed by macromolecule scission and crosslinking measurements

Evaluation of poly(ethylene terephthalate) photostabilisation using FTIR spectrometry of evolved carbon dioxide

“…Oxygen diffusionlimited reaction is caused when the oxygen from the atmosphere is consumed by rapid reaction near the illuminated surface before it can diffuse into the interior to react there. It is quite common in photo-oxidation of polymers and has been widely observed in polyolefins [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. However, oxygen starvation is expected to occur at even smaller depths in PET than in polyolefins because the diffusion coefficient for oxygen in PET is two orders of magnitude smaller than for PE [32].…”

Preparation of a Nano-TiO2-Loaded Antioxidant and Its Anti-aging Performance against UV/O3 in Thermoplastic Vulcanizates

“…The chain scission and cross-linking of polymer macromolecules are conducted simultaneously during the course of aging. , The degree of cross-linking of TPV is essential to the structure and mechanical properties of polymers. Therefore, the gel contents of TPV specimens during UV/O 3 aging were investigated, and the results are presented in Figure .…”

Novel Hybrid Polymer Composites Based on Anthraquinone and Eco-Friendly Dyes with Potential for Use in Intelligent Packaging Materials

“…Dyes and pigments constitute a wide group of polymer additives that are mainly used to make the product attractive for the consumer by its diverse coloration. However, they can also have a significant influence on parameters such as chemical resistance, thermal stability, durability, or resistance to various environmental factors, including elevated temperature, ultraviolet (UV) radiation, and humidity [6][7][8][9][10]. For instance, Cavalcanti et al (2019) [11] examined the influence of irgalite red 2BSP pigment on the photodegradation 2 of 23 of polypropylene (PP) films.…”