Category Archives: Chemistry

Degradation of PVC and the function of stabilizers

Degradation of polyvinyl chloride (PVC) is mainly caused by the de-HCl reaction, in which the hydrogen (H) and chlorine (Cl) in PVC molecules are desorbed by heat during processing. The desorbed HCl accelerates this de-HCl reaction, resulting in a chain reaction called the Zipper reaction. As a result, a conjugated double bond (a single bond…

Polyvinyl chloride (PVC) products and stabilizers

Polyvinyl chloride (PVC) products are present everywhere around us. PVC is a thermoplastic resin (a resin having a property of softening by applying heat). It is the most versatile polymer in the Polyolefin family, thanks to additives such as plasticizer and coloring agent, many products can be manufactured through a wide range of processes, like…