Polybutadiene Rubber

Polybutadiene can be produced by both emulsion and solution polymerisation. Emulsion polymers are of random nature in stereospecificity. Solution polymers can be manufactured into stereospecifically tailor-made forms. It is achieved with the use of different catalysts such as anionic or ziegleratta type. BR has excellent resilience, abrasion resistance, and low temperature flexibility. BR can have higher filler loading and oil extension without property deterioration. Tear strength and resistance to cut growth are relatively poor for BR and hence is used as a blend with other rubbers. About 90% of BR is used in tyres, blended in various proportions with SBR, NR etc. Other application of BR is as an additive in rigid plastics such as polystyrene for impact modification. Other engineering applications such as V-belts, conveyor belting, solid rubber tyres, antivibration mounting roller covering and flexible heavy duty suction and discharge hoses.