Question

Which one of the following is the structure of polyacrylonitrile ?

• A. ${(-C{H}_2-\underset{Cl}{\underset{|}{C}}H-)}_n$
• B. ${(-C{H}_2-\underset{CN}{\underset{|}{C}H}-)}_n$
• C. ${(-C{H}_2-\stackrel{Cl}{\stackrel{|}{\underset{Cl}{\underset{|}{C}}}}-)}_n$
• D. ${(-C{H}_2-\stackrel{CN}{\underset{COOC{H}_3}{\underset{|}{\stackrel{|}{C}}}}-)}_n$

Answer 1

Answer: (B)

${(-C{H}_2-\underset{CN}{\underset{|}{C}H}-)}_n$

$\underset{Acrylontrile}{{}_{n}C{H}_2=\underset{CN}{\underset{|}{C}H}}\stackrel{Polymerisation}{\to }{(\underset{Polyacrylonitrile}{-C{H}_2-\underset{CN}{\underset{|}{C}H}}-)}_n$

Polyacrylonitrile (PAN), a synthetic resin prepared by the polymerization of acrylonitrile.

Hence, option B is correct.