Polyethylene Vinyl Chloride

In practice however vinyl chloride polymerized commercially does not have regular tacticity because the growing end of the chain is a free radical at an sp 2 hybridized carbon.

Polyethylene vinyl chloride.

Vinyl chloride is used primarily to make polyvinyl chloride pvc. What is vinyl chloride. Ethylene vinyl acetate eva also known as poly ethylene vinyl acetate peva is the copolymer of ethylene and vinyl acetate the weight percent of vinyl acetate usually varies from 10 to 40 with the remainder being ethylene. Since vinyl chloride is a monosubstituted ethylene and not a symmetric molecule in principle it could have explicit tacticity as does for example polypropylene.

Pvc is made by subjecting vinyl chloride to highly reactive compounds known as free radical initiators. There are three different types of eva copolymer which differ in the vinyl acetate va content and the way the materials are used. Rigid sometimes abbreviated as rpvc and flexible. Pvc is used to make a variety of plastic products including pipes wire and cable coatings and packaging materials.

Vinyl chloride ch 2 chcl also known as chloroethylene is most often obtained by reacting ethylene with oxygen and hydrogen chloride over a copper catalyst it is a toxic and carcinogenic gas that is handled under special protective procedures. It does not occur naturally and must be produced industrially for its commercial uses. About 13 billion kilograms are produced annually. Vinyl chloride is an organochloride with the formula h 2 c chcl that is also called vinyl chloride monomer vcm or chloroethene this colorless compound is an important industrial chemical chiefly used to produce the polymer polyvinyl chloride pvc.