Q.What is Buna-N-rubber ?

Buna-S is a synthetic rubber made by copolymerising a diene monomer with styrene.

Buna-S (styrene-butadiene rubber, SBR) is obtained by the free-radical copolymerisation of 1,3-butadiene (CH2=CH-CH=CH2) and styrene (C6H5-CH=CH2) in roughly a 3:1 ratio. ('Buna' comes fr …

Buna-N is a synthetic rubber made by copolymerising two monomers: 1,3-butadiene and acrylonitrile.

Buna-N (also called nitrile rubber, NBR) is an addition copolymer formed from two monomer units:

1. 1,3-Butadiene: CH2=CH-CH=CH2
2. Acrylonitrile: CH2=CH-CN …

Buna-N and Buna-S are synthetic rubbers.

Synthetic rubbers are man-made polymers with elastic properties similar to natural rubber. Buna-S is a copolymer of buta-1,3-diene and styrene, while Buna-N is a copolymer of buta-1,3-diene and acrylonitril …