Analysis of PVC Produced With An Environmentally Friendly Additive Exposed to Gamma Radiation

Abstract

Commercial Poly(vinyl chloride) (PVC) compounds are based on the combination of the polymer and additives that gives the formulation necessary for the end‐use. In medical‐device applications, PVC may be treated by gamma irradiation in sterilization process. As a consequence of ionization during irradiation, PVC chains undergo simultaneously crosslinking and scission effects. Therefore, it is necessary the study of new additives with radiolytic stabilization characteristics. In this study, the vegetable oil extracted from coffee grounds (OCG) was incorporated in PVC resin as an additive to produce PVC films and PVC test specimens. The viscosity measurements showed that OCG is a promising radioprotection at 0.5 wt% concentration. The results of mechanical and thermal properties are also discussed. The aim of this study is to show that it is possible to develop a formulation for processing PVC with radiation resistance and, at the same time, friendly to the environment due to recycle the wastes from coffee industry.

X‐Ray Shielding Performance and Characterization of Electrospun PVC/Bismuth(III) Oxide Nanocomposites

“…As a result of chain scissioning, PVC polymer degrades and the degree of degradation can be macroscopically observed due to color change from white to dark brown. If absorbed radiation dose exceed 10 4 kGy, severe damages are observed on PVC polymer chain and irreversible decomposition occurs [4–7] …”

“…If absorbed radiation dose exceed 10 4 kGy, severe damages are observed on PVC polymer chain and irreversible decomposition occurs. [4][5][6][7] Electrospinning is a simple and reliable technique for obtaining functionality on unit of fiber-based structures. Polymer melts or solutions are used as input materials thereby numerious polymers can be processed by the help of their favourable viscoelastic forms and various addivites or reinforcements can be loaded into matrix before manufacturing process.…”