TY - JOUR ID - 147155 TI - New photostabilizers for poly (vinyl chloride) derived from heterocyclic compounds JO - Eurasian Chemical Communications JA - ECC LA - en SN - 2717-0535 AU - Farhan, Mohammed Alwan AU - Nief, Olfat Abed AU - Ali, Wassan Baqir AD - Department of Chemistry, College of Science, Mustansiriyah University, Baghdad, Iraq AD - Department of Chemistry, College of Science, Diyala University, Diyala, Iraq Y1 - 2022 PY - 2022 VL - 4 IS - 6 SP - 525 EP - 543 KW - Photostabilizers KW - UV Irradiation KW - Schiff base KW - Hetero cyclic KW - chain scission KW - PVC DO - 10.22034/ecc.2022.332467.1347 N2 - In this work, the photo-stabilization of poly (vinyl chloride) was studied using new compounds such as Schiff base stabilizers derived from heterocyclic compounds, with symbols [I1-I4] which were used as additives to prevent the PVC photodegradation. Many samples have been prepared as films for this purpose by adding the additives to poly (vinyl chloride) with varying weight percentages of additives and thicknesses. The photostabilization activities for these new compounds were measured by detecting the carbonyl group with irradiation time (the absorption band of carbonyl was determined at 1724-1772 cm-1). FT-IR spectra PERKIN ELMER SPEACTUM-65, JASCO used to determine the absorption spectra of PVC films, also the viscosity average molecular weight , the average number of chain scission (S), and the degree of deterioration (α) were studied. Scanning Electron Microscope (SEM) and light microscope are also used to test the polymeric films surface. We discovered that in the existence of additives, the rate of photostabilization follows the trend:-I4 > I3 > I1 > I2 > PVCAccording to the experimental results, a UV absorption peroxide decomposer has been proposed for mechanisms. UR - https://www.echemcom.com/article_147155.html L1 - https://www.echemcom.com/article_147155_c1a756085d1a819758effaba179abb59.pdf ER -