Explain the difference between Buna -N and Buna-S .

Explanation

Buna -N Buna -N is the copolymer which is formed by the polymerisation of 1,3-Butadiene and acrylonitrile .
`underset("1,3-Butadiene")(n(CH_(2)=CH=CH_(2)))+underset("Acrylonitrile")(N(CH_(2)=CH-CN))tounderset("Buna-N")("(-"CH_(2)-CH=CH-CH_(2)-overset(N)overset(|)CH"-)"_(n)`
Buna -S: Buna -S is the copolymer which is formed by the polymerisation of 1,3- Butadiene and styrene.
`underset("1,3-Buradiene")(n(CH_(2)=CH-CH=CH_(2)))+underset("Styrene")(n(CH_(2)=CH-C_(6)H_(5)))tounderset("Buna-S")((-CH_(2)-CH=CH-CH_(2)-CH_(2)-overset(C_6 H_5)overset("|")(CH-))_(n)`