Identify the monomers used to obtain the polymer Buna N in the presence of a peroxide catalyst.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is option 2. B and C only.
Buna-N is an example of a synthetic rubber.
Synthetic rubber may be defined as any vulcanized rubber-like polymer which is capable of getting stretched to twice its length. Synthetic rubbers are either homopolymers of 1,3-butadiene or its derivatives or are copolymers of 1,3-butadiene or its derivatives with another unsaturated monomer. Buna-N is a copolymer rubber.
Copolymerization is a technique in which two or more different compounds are allowed to polymerize. The product formed after copolymerization is called copolymers. A copolymer can be made not only by chain-growth polymerization but also by step-growth polymerization. It contains a large number of units of each monomer used in the same polymeric chain.
1,3-Butadiene and acrylonitrile are copolymerized to form Buna-N. This copolymerization takes place in the presence of peroxide as a catalyst.
\(n\) number of 1,3-butadiene and \(n\) number of acrylonitrile reacts with each other. The double bonds shift to form a single chain. We get n number of Buna-N compounds.
The reaction of the formation of Buna-N is given below:
