Polymers - Some Important Polymers

Based on molecular forces, what type of polymer is neoprene?

Write the structures of the monomers used for getting the following polymers

Melamine – formaldehyde polymer

Which of the following polymers, need atleast one diene monomer for their preparation?

(i) Dacron

(ii) Buna-S

(iii) Neoprene

(iv) Novolac

Name the polymers used in laminated sheets and give the name of monomeric units involved in its formation.

Match the polymers given in Column I with the type of linkage present in them given in Column II.

Match the polymers given in Column I with their repeating units given in Column II.

Column I	Column II
(i) Acrilan	(a) \[\begin{array}{cc} \ce{-(CH2 - CH)\underset{n}{-}}\\ \phantom{....}|\\ \phantom{.......}\ce{C6H5} \end{array}\]
(ii) Polystyrene	(b) \[\begin{array}{cc} \ce{Cl}\phantom{.......}\\ |\phantom{........}\\ \phantom{}\ce{-(CH2 - C = CH - CH2)\underset{n}{-}} \end{array}\]
(iii) Neoprene	(c) \[\begin{array}{cc} \phantom{................................}\ce{CN}\\ \phantom{..............................}|\\ \ce{-(CH2 - CH = CH - CH2 - CH2 - CH)\underset{n}{-}} \end{array}\]
(iv) Novolac	(d) \[\begin{array}{cc} \ce{-(CH2 - CH)\underset{n}{-}}\\ \phantom{.....}|\\ \phantom{.......}\ce{CN} \end{array}\]
(v) Buna—N	(e)
	(f)  \[\begin{array}{cc} \ce{-(CH2 - CH)\underset{n}{-}}\\ \phantom{.....}|\\ \phantom{......}\ce{Cl} \end{array}\]

Phenol and formaldehyde undergo condensation to give a polymar (A) which on heating with formaldehyde gives a thermosetting polymer (B). Name the polymers. Write the reactions involved in the formation of (A). What is the structural difference between two polymers?

The commercial name of polyacrylonitrile is ______.