Addition polymerization

Addition polymerization is a type of polymerization in which the monomers simply add together to form the polymer, with no other products. This process involves the rearrangement of bonds within the monomer in such a way that the monomers link up directly with each other.

Mechanism

The mechanism of addition polymerization is initiated by a compound known as an initiator. The initiator starts the reaction by reacting with a monomer to form a reactive intermediate. This intermediate then reacts with another monomer, forming a longer chain and another reactive intermediate. This process continues, with the chain growing one monomer at a time, until the reaction is terminated.

Types

There are several types of addition polymerization, including radical polymerization, anionic polymerization, cationic polymerization, and coordination polymerization. These types differ in the type of reactive intermediate involved and the specific mechanism of the reaction.

Applications

Addition polymerization is used to make a wide variety of polymers, including polyethylene, polypropylene, polyvinyl chloride (PVC), and polystyrene. These polymers have a wide range of applications, from packaging materials and construction materials to textiles and automotive parts.

See also

• Polymer chemistry
• Condensation polymerization
• Copolymerization