What is the polymerization of styrene?

Styrene readily polymerizes to polystyrene by a relatively conventional free radical chain mechanism. Either heat or initiators will begin the polymerization. Initiators thermally decompose, thereby forming active free radicals that are effective in starting the polymerization process.

What type of polymerization reaction will occur in the formation of polystyrene?

Addition Polymerisation Reaction. Polystyrene is produced in an addition polymerisation reaction from styrene monomers. The reaction is highly exothermic, the heat of reaction for the polymerisation is -121 kJ mol-1 (at 25oC).

What is styrene divinylbenzene?

Divinylbenzene (DVB) consists of a benzene ring bonded to two vinyl groups. It is related to styrene (vinylbenzene) by the addition of a second vinyl group. It is a colorless liquid manufactured by the thermal dehydrogenation of isomeric diethylbenzenes.

Can you polymerize styrene with toluene?

Taking on toluene: Highly efficient chain transfer to toluene has been achieved for the first time in styrene coordination polymerization by using rare-earth metal precursors.

How can styrene polymerization be prevented?

Certain inhibitors, known to be useful in preventing polymerization of styrene monomer, have been incorporated into a paint or protective coating to be applied to surfaces and structures exposed to vapors of the styrene monomer. The structures and surface thus coated will not be subject to the growth of polymer.

How the rate of styrene polymerization can be increased?

As can be seen from Equation (8), the rate of propagation can be increased by increasing propagation rate constant kp, concentration of growing radicals [M·], or monomer concentration [M].

What are the types of polymerization?

There are two general types of polymerization reactions: addition polymerization and condensation polymerization. In addition polymerization, the monomers add to one another in such a way that the polymer contains all the atoms of the starting monomers. Ethylene molecules are joined together in long chains.

Which carbon atoms react during polymerization of styrene into polystyrene?

Polystyrene is an addition polymer that results when styrene monomers interconnect (polymerization). In the polymerization, the carbon-carbon π bond of the vinyl group is broken and a new carbon-carbon σ bond is formed, attaching to the carbon of another styrene monomer to the chain.

What are the factors of solution polymerisation?

What are the factors of solution polymerisation? Explanation: Thus the nature of the solvent and the concentration of the monomer are the determining factors for the progress of the polymerization at a certain temperature, which progress, however, never reaches the speed of a bulk polymerization.