Científicos resuelven un misterio de hace 100 años sobre el caucho reforzado

Investigadores de la Universidad del Sur de Florida han identificado el mecanismo que permite a las partículas de negro de humo fortalecer el caucho, resolviendo un enigma científico que ha persistido durante casi un siglo. Sus simulaciones por computadora revelan cómo el material resiste el estiramiento al luchar eficazmente contra sí mismo.

El equipo, dirigido por el profesor de ingeniería David Simmons, llevó a cabo 1,500 simulaciones de dinámica molecular que sumaron el equivalente a 15 años de tiempo de computación. En colaboración con el investigador posdoctoral Pierre Kawak y el estudiante de doctorado Harshad Bhapkar, demostraron que las partículas de negro de humo limitan cuánto se adelgaza el caucho al ser estirado. Esto obliga al material a expandirse en volumen, aumentando considerablemente su rigidez y resistencia.

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