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Which type of initiator is used in cationic polymerization?

Which type of initiator is used in cationic polymerization?

Lewis acids are the most common compounds used for initiation of cationic polymerization. The more popular Lewis acids are SnCl4, AlCl3, BF3, and TiCl4. Although these Lewis acids alone are able to induce polymerization, the reaction occurs much faster with a suitable cation source.

Which can best serve as an initiator for the cationic polymerization?

Correct Option c AlCl3 Explanation: Electron-deficient specie Lewis acid is used as an initiator for cationic polymerization.

Which of the following acts initiator catalyst in cationic polymerization?

Azoisobutyronitrile acts as an initiator in a polymerisation reaction.

What is the initiator used in the process of polymerisation called?

The polymerization of TFE is a batch process; the initiator for the polymerization is usually a water-soluble peroxide such as ammonium persulfate or disuccinic peroxide. A redox catalyst is used for low temperature polymerization.

Which initiator is used in anionic polymerization?

Alkyl lithium
Solution : Alkyl lithium used as initiators for anionic polymerisation.

Which of the following acts initiator in free radical polymerization?

Which of the following act as an initiator in free-radical polymerisation? Explanation: Benzoyl peroxide act as an initiator in free-radical polymerisation.

Why is benzoyl peroxide a good initiator?

Benzoyl Peroxide BPO readily undergoes symmetrical fission (homolysis), forming two benzoyloxy radicals: The two fragments with unpaired electrons are called free radical initiators. Following its generation, the initiating free radicals react with a monomer unit thereby creating growing polymer chains.

What are the initiators that are used in free radical polymerization?

Benzoyl peroxide is the initiator used in free radical addition polymerization.

What are initiators give two examples?

The most widely used initiators produce free radicals (reactive atoms or groups of atoms that contain odd numbers of electrons); examples include peroxides and aliphatic azo compounds used to polymerize vinyl chloride, methyl methacrylate, and other monomers.

Why is Benzoyl peroxide a good initiator?

What type of initiator is benzoyl peroxide?

thermal radical initiators
For example, azo compounds such as 2,2′-azobis(isobutyronitrile) (AIBN) and organic peroxides such as benzoyl peroxide (BPO) are well-known thermal radical initiators, and benzenesulfonic acid esters and alkylsulfonium salts have been developed as thermal cation initiators.

Why are peroxides good initiators?

The reason for this is that organic peroxides are able to form radicals very easily by decaying of the O-O bond, induced by heat or by UV-radiation. This qualifies organic peroxides for a controllable trigger of the reaction and thus as an initiator for the free-radical polymerization.