Properties and Uses of Polybutadiene

cis-1,4-Polybutadiene is characterized by high elasticity, low heat buildup, high abrasion resistance, and resistance to oxidation. However, it has a relatively low mechanical strength. This is improved by incorporating a cis, trans block copolymer or 1,2-(vinyl) block copolymer in the polybutadiene matrix.  Also, a small amount of natural rubber may be mixed with polybutadiene to improve its properties. trans 1,4 Polybutadiene is characterized by a higher glass transition temperature (Tg = –14°C ) than the cis form (Tg = –108°C ). The polymer has the toughness, resilience, and abrasion resistance of natural rubber (Tg = –14°C ).