"Preparation of cardanol functionalized liquid 1,2-polybutadiene and enhancement of interfacial interaction on butadiene-styrene rubber/silica composites"

Abstract

Phenol functionalized liquid 1,2-PB (1,2-PB-g-CA) was prepared by grafting bio based cardanol (CA) onto 1,2-polybutadiene rubber (1,2-PB) by olefin metathesis. The results showed that CA was successfully grafted onto polybutadiene, and the graft product with more than 10% functionality could be obtained in the open system. The dispersion of silica in the matrix could be improved by using 1,2-PB-g-CA as plasticizer in the butadiene-styrene rubber tread formulation filled with silica. At the same time, the existence of hydroxyl group of the modified oligomer was conducive to increasing the interaction between silica and rubber matrix. The vulcanizate had low rolling resistance and heat generation performance.

Keywords

• liquid 1
• 2-polybutadiene rubber
• plasticizer
• butadiene-styrene rubber
• silica
• composite