How Carbon Black Strengthens Rubber: New Research on Tire Efficiency

Researchers at the University of South Florida have identified the mechanism behind how carbon black reinforces rubber. By using molecular dynamics simulations, the team discovered that a Poisson's ratio mismatch forces the material to resist volume changes, significantly increasing stiffness and strength. This discovery moves tire manufacturing away from trial and error. By understanding the physics of rubber reinforcement, engineers can better balance the magic triangle of fuel efficiency, traction, and durability, potentially reducing vehicle emissions through better tire design.