The chloride of polyvinyl also known as polyvinylchloride or with the corresponding PVC abbreviation, it is the polymer of vinyl chloride with the formula -(CH2CHCI)n- and molecular weight among the 60,000 and 150,000u. It’s the most important polymer of the range obtained from vinyl monomers and it is one of the most used worldwide plastic material.
Pure, it is a rigid material; it owes its versatility to the possibility to be mixed also in high proportions to inorganic compounds and plasticizers, such as phthalic acid esters which make it flexible and mouldable. It is considered stable and safe in technological applications at room temperature, but extremely dangerous if burnt or heated at high temperatures and in unsuitable installations to its treatment. Due to the presence of chlorine in the molecule that can release itself as hydrochloric acid, as dioxin, or as vinyl chloride monomer.
Although it is a recycable plastic ( SPI Code – resin identification coding system 3), PVC is recovered only partially due to the high costs of treatment.