(a)Why is the purest monomer used in free radical polymerisation? (b).How does the presence ofCCl_(4)orCBr_(4)influence the course of vinylic free radical polymersation. (c )what is the monomer of the polymer given below: (d)Why does hole develope in nylon stocking when adrop ofHClis added to it?

(a)Why is the purest monomer used in free radical polymerisation? (b)

1.	(a)Why is the purest monomer used in free radical polymerisation? (b).How does the presence ofCCl_(4)orCBr_(4)influence the course of vinylic free radical polymersation. (c )what is the monomer of the polymer given below: (d)Why does hole develope in nylon stocking when adrop ofHClis added to it?
Answer» Solution :(a) Trace of impurities present in alkene ,onomer can act as either chain transfer agents RO inhibitors,If it acts as a chain transfer AGENT,then lower-average -molecular-mass polymer is formed.If it acts as an INHIBITOR,the process of POLUMERISATION is inhibited .Hence ,the pureset monomer us uded to avoid these processes. (b)In vinylic polymerisation`,CCl_(4)`and`CBr_(4)`acts as chain transfer agents.i.e.,it reacts eith thr growing chain to interrupt its further growth and initiat eits chain growth (i.e, produces a new radical). The monomer is(ethylene or acidic hydrolysis of oxirane), (d).This is due to the breaking or acidic hydroysis of amide bond present in nylon.