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Copolimeros de productos básicos para cerraduras con llave y cerradura

Marek W Urban^1,2,3, Dmitriy Davydovich^4,3, Ying Yang^4,3

¹Department of Materials Science and Engineering, Clemson University, Clemson, SC 29634, USA. mareku@clemson.edu.

Science (New York, N.Y.)

|October 13, 2018

Resumen

Los copolímeros básicos pueden autocurarse después del daño utilizando fuerzas de van der Waals, lo que permite múltiples recuperaciones sin intervención externa. Este avance en los materiales autocurativos ofrece un nuevo camino para los polímeros duraderos y reparables.

Área de la Ciencia:

Ciencias de los materiales
Química de los polímeros

Sus antecedentes:

Los materiales autocurativos pueden recuperarse de daños físicos o químicos.
Los enfoques de autocuración existentes a menudo se basan en la reunión supramolecular o covalente, o en reactivos encapsulados.

Objetivo del estudio:

Investigar las capacidades de autocuración de los copolímeros básicos, específicamente el poli (methacrilato de metilo) / n-butil acrilato (p (MMA/nBA)).
Atribuir el mecanismo de auto-curación a las fuerzas de Van der Waals.

Principales métodos:

Se han producido daños mecánicos en los copolímeros p ((MMA/nBA).
Se identificó el rango de composición y la topología de copolímero que favorece la autocuración.
Se analizó el papel de las fuerzas de van der Waals en la facilitación de la curación.

Principales resultados:

Los copolímeros básicos, en particular p ((MMA/nBA) en una topología alterna/aleatoria específica, exhiben propiedades de autocuración.
La autocuración se atribuye a las uniones entre cadenas de llave y cerradura formadas por las fuerzas de van der Waals.
Los materiales demostraron múltiples ciclos de recuperación tras daños mecánicos sin intervención externa.

Conclusiones:

Las fuerzas de Van der Waals proporcionan un mecanismo eficaz para la autocuración en estructuras específicas de copolímero.
Este enfoque evita las alteraciones químicas y los estímulos externos, ofreciendo una solución de autocuración más simple y robusta.
Los hallazgos presentan una nueva ruta para el desarrollo de materiales avanzados de autocuración en condiciones ambientales.

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