Process | Application | ||
---|---|---|---|
P | Extrusion | 1 | Producing complex parts with close tolerance |
Q | Injection molding | 2 | Producing thermosetting plastic components |
R | Blow molding | 3 | Producing long uniform sections |
S | Compression molding | 4 | Producing hollow shapes |
List -I | List-II | ||
A | Buna-S | I | Vinyl chloride |
B | Neoprene | II | 1,3-Butadiene and styrene |
C | PVC | III | Tetra flouroethene |
D | Teflon | IV | Chloroprene |
Polymerization is a chemical reaction in which a large number of monomer molecules combine to produce a polymer. A polymerization can yield macromolecules with a linear or branching structure. They can also take the form of a three-dimensional complicated network.
Polymerization reactions are divided into two groups, namely, Addition polymerization (chain reaction) and condensation reaction (step reaction).