What is Ziegler-Natta polymerization of defined?

What is Ziegler-Natta polymerization of defined?

Ziegler–Natta catalyst is a type of catalyst made from a mixture of chemical compounds that are mainly used in the synthesis of polymers belonging to 1-alkenes such as alpha-olefins which are hydrocarbons containing a double carbon-carbon bond.

What is an olefin polymer?

a macromolecular compound of the general formula. that forms during polymerization or copolymerization of unsaturated olefin hydrocarbons (R, R′ = H, CH3, C2H5, and so on). The best-known olefin polymers are polyethylene (R = R′ = H) and polypropylene (R = H, R′ = CH3).

What is the significance of Ziegler-Natta catalyst?

Ziegler-Natta catalyst, any of an important class of mixtures of chemical compounds remarkable for their ability to effect the polymerization of olefins (hydrocarbons containing a double carbon–carbon bond) to polymers of high molecular weights and highly ordered (stereoregular) structures.

What is the advantage of Ziegler-Natta catalyst?

The Ziegler-Natta catalysts have been used for ethylene polymerization since 1950. Ziegler-Natta catalysts have advantages of producing product with high molecular weight, high melting point and controllable morphology.

What are the type of polymerization?

There are two basic types of polymerization, chain-reaction (or addition) and step-reaction (or condensation) polymerization. One of the most common types of polymer reactions is chain-reaction (addition) polymerization. This type of polymerization is a three step process involving two chemical entities.

What are the advantages of Ziegler-Natta polymerization over free radical polymerization?

Ziegler-Natta catalysis is especially useful, because it can make polymers that can’t be made any other way, such as linear unbranched polyethylene and isotactic polypropylene. Free radical vinyl polymerization can only give branched polyethylene, and propylene won’t polymerize at all by free radical polymerization.

What catalyst is used in polymerization?

A Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, is a catalyst used in the synthesis of polymers of 1-alkenes (alpha-olefins).