Thermal stability of cationically allylated poly(vinyl chloride) and poly(vinyl chloride-co-2-chloropropene) copolymer

Epoxidized castor oil‐based diglycidyl‐phthalate plasticizer: Synthesis and thermal stabilizing effects on poly(vinyl chloride)

“…The thermogravimetric results for F0, F1, F2, F3, and F4 are shown in Figure (b). The five films are thermally stable below 190 °C in nitrogen gas and undergo two thermal degradation steps above 190 °C in each curve, which closely coincides with previous reports . The first degradation step (at ~250‑350 °C) is attributed to the thermal decomposition of the plasticizer and to PVC dechlorination.…”

Synthesis and thermal stability of polystyrene and poly(vinyl chloride) coated with polythiophene and modified with Fe2O3nanoparticles

“…Thermal degradation of PVC occurs because of the presence of labile sites in the polymer chains, such as alkyl chlorine, tertiary hydrogen and chlorine atoms, terminal end groups such as double bonds, oxygen‐containing groups, peroxide residues, head‐to‐head structures, and the steric order of the monomer . In most of the early experiments, dehydrochlorination of PVC was studied, mainly with the aim of improving the thermal stability of PVC . From the TGA results, the thermal profile of the pure PS particles belongs to a single‐step weight loss .…”

Synthesis and evaluation of homopolymer and terpolymer based on phenyl salicylate as photostabilizers for rigid polyvinylchloride

“…However, using PVC products for outdoor construction applications depends on their ability to resist photodegradation upon exposing them to direct sunlight for a long time. This polymer undergoes a rapid autocatalytic dehydrochlorination when subjected to heat and light during its molding and usage, respectively. The main processes evolved during PVC exposure to heat, light, and aggressive chemical agents, as well as mechanical stresses are dehydrochlorination besides the polyene formation, which results in polymer discoloration, chain scission, crosslinking, oxidation, cyclization, and isomerization .…”