Vinyl Chloride Polymerization Reaction

Vinyl chloride ch 2 chcl is most often obtained by reacting ethylene with oxygen and hydrogen chloride over a copper catalyst.

Vinyl chloride polymerization reaction.

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. This polymerisation reaction proceeds by a free radical mechanism. All elementary reactions occurring during the vcm free radical polymerization were grouped into five reaction families consisting of forward and backward steps cfr figure 2. Polymerization of vinyl chloride have been identified including elemen tary chemical reactions.

It is a clear colorless liquid with a sweet fruity smell. Vinyl chloride is primarily used to make polyvinyl chloride to manufacture plastics. 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. It is very flammable and may be ignited by heat sparks or flames.

It is a carcinogenic gas that must be handled with special protective procedures. Foaming above the aqueous polymerization mixture can be efficiently reduced in suspension polymerization of vinyl chloride monomer in an aqueous medium contained in a polymerization reactor equipped with a reflux condenser for removal of the heat of polymerization by admixing the polymerization mixture with additives comprising a from 0 002 to 0 007 part by weight of a partially saponified. To achieve this the free radical polymerization of vinyl chloride was modeled at the elementary reaction level. When treated with certain catalysts vinyl chloride monomers undergo polymerization and form the larger compound known as polyvinyl chloride or pvc.

Suspension and emulsion polymerization of vinyl chloride monomer using free radical initiators. In the early 1970s the carcinogenicity of vinyl chloride usually called vinyl chloride monomer or vcm was linked to cancers in workers in the polyvinyl chloride industry. Polyvinyl chloride is a white rigid quite brittle solid. About 13 billion kilograms are produced annually.

Vinyl acetate is used to make other industrial chemicals. Polyvinyl chloride is produced in an addition polymerisation reaction using the chloroethene vinyl chloride monomer. Physical phenomena of polyvinylchloride parti cle formation and reactant species distributions in phas s during poly merization. Vinyl chloride is an organohalogen compound that has important industrial applications.

Additives are used to modify the properties of polyvinyl chloride to make it more useful. Specifically workers in polymerization section of a b f. A comprehensive reactor model for batch and semi batch proc esses has been developed on the basis of these.