In this work

a composite of lignin and natural rubber (L/NR) with interpenetrating network structure has been prepared by co-precipitation method in sodium hydroxide aqueous solution. Then

the well prepared composite was employed as a reinforcing agent and partially substituted white carbon black (WCB)

a traditional reinforcing agent

in preparation of enhanced styrene-butadiene rubber (SBR) through a three-stage mixing method. The experimental results indicated that the mechanical properties of SBR including the tensile strength and elongation at break had been both improved after blending L/NR composite. While the dynamic thermal mechanical analysis revealed that the glass transition temperature of SBR decreased

and the cold tolerance improved

but the wear resistance slightly decreased.