Question

Which of the following polymers can be made by anionic addition polymerisation mechanism ?

• A. PVC
• B. PAN
• C. Telfon
• D. PP

Answer 1

Answer: (A), (B), (C)

The correct options are
A PVC
B PAN
C Telfon

Anionic addition polymerization is a form of chain-growth polymerization or addition polymerization that involves the polymerization of vinyl monomers with strong electronegative groups. This polymerization is carried out through a carbanion active species.

Like all chain-growth polymerizations, it takes place in three steps: chain initiation, chain propagation and chain termination.

Characteristics: In order for polymerization to occur with vinyl monomers, the substituents on the double bond must be able to stabilize a negative charge. Stabilization occurs through delocalization of the negative charge. The delocalisation of electron density can be done by Electron withdrawing group such as $CN$, $-F$, $-Cl$ etc.

The solvent is determined by the reactivity of both the initiator and carbanion of the propagating chain end.

Hence, polymers that can be made by anionic addition polymerisation mechanism are PVC, PAN and Teflon.