Vinyl Chloride Addition Polymerization

Polyvinyl chloride is produced in an addition polymerisation reaction from chloroethene vinyl chloride monomers.

Vinyl chloride addition polymerization.

Vinyl acetate is an industrial chemical that is produced in large amounts in the united states. Natural evolution of hcl from vc occurred in the polymerization. Polyvinyl chloride is produced by polymerization of the vinyl chloride monomer vcm as shown. Vinyl chloride is a chlorinated hydrocarbon occurring as a colorless highly flammable gas with a mild sweet odor that may emit toxic fumes of carbon dioxide carbon monoxide hydrogen chloride and phosgene when heated to decomposition.

Free radical polymerization frp is a method of polymerization by which a polymer forms by the successive addition of free radical building blocks. Vinyl chloride liquid is fed to polymerization reactors where it is converted from a monomeric vcm to a polymeric pvc. It is a clear colorless liquid with a sweet fruity smell. Polymerization of vinyl chloride vc was studied.

Free radicals can be formed by a number of different mechanisms usually involving separate initiator molecules. The final product of the polymerization process is pvc in either a flake or pellet form. Following its generation the initiating free radical adds nonradical monomer units thereby growing the polymer chain. The monomer chloroethene or vinyl chloride has a boiling point of 14 o c 259k so it is a gas at room temperature and pressure.

Vinyl acetate is used to make other industrial chemicals. Under pressure the gaseous chloroethene molecules are forced closer together to form a liquid. Vinyl chloride suspension polymerization was carried out in a pilot scale reactor to study the effects of different methods of initiator addition on poly vinyl chloride pvc resin properties. Vinyl chloride is primarily used to make polyvinyl chloride to manufacture plastics.

About 80 of production involves suspension polymerization. When treated with certain catalysts vinyl chloride monomers undergo polymerization and form the larger compound known as polyvinyl chloride or pvc. Pvc is used in the manufacture of numerous products including packaging films and water pipes. It is very flammable and may be ignited by heat sparks or flames.

Emulsion polymerization accounts for about 12 and bulk polymerization accounts for 8. Anionic addition polymerization is a form of chain growth polymerization or addition polymerization that involves the polymerization of monomers initiated with anions. The type of reaction has many manifestations but traditionally vinyl monomers are used.