Advertisement Remove all ads

Which of the following polymers, need atleast one diene monomer for their preparation? (i) Dacron (ii) Buna-S (iii) Neoprene (iv) Novolac - Chemistry

Advertisement Remove all ads
Advertisement Remove all ads
Short Note

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

(i) Dacron

(ii) Buna-S

(iii) Neoprene

(iv) Novolac

Advertisement Remove all ads

Solution

(ii) Buna-S

(iii) Neoprene

Explanation:

\[\begin{array}{cc}\phantom{}
\phantom{..................................................................}\ce{C6H5}\\
\phantom{...............................................................}|\\
\ce{\underset{1, 3-Butadiene}{nCH2 = CH} - CH = CH2 + n C6\underset{Styrene}{H5CHCH2} -> \underset{(Buna - S)}{\underset{Butadiene-styrene copolymer}{-(CH2 - CH = CH - CH2 - CH - CH2)\underset{n}{-}}}}
\end{array}\]

Neoprene or polychloroprene is formed by the free radical polymerisation of chloroprene.

\[\begin{array}{cc}
\phantom{..}\ce{Cl}\phantom{...................................}\ce{Cl}\phantom{.........}\\
\phantom{}|\phantom{.....................................}|\phantom{........}\\
\ce{\underset{2-Chloro-1, 3-buta-1, 3-diene}{\underset{Chloroprene}{n CH2 = C - CH = CH2}} ->[Polymerisation] \underset{Neoprene}{-[CH2 - C = CH - CH2]\underset{n}{-}}}
\end{array}\]

Concept: Polymers - Some Important Polymers
  Is there an error in this question or solution?
Advertisement Remove all ads

APPEARS IN

NCERT Chemistry Exemplar Class 12
Chapter 15 Polymers
Multiple Choice Questions (Type - II) | Q 9 | Page 219
Advertisement Remove all ads
Share
Notifications

View all notifications


      Forgot password?
View in app×