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Una capa superhidrofóbica multifuncional preparada mediante la extracción de quitosano de desechos de caparazones de
Guangli Chen1, Yuanyuan Lu1, Wenjun Lv1
1Hubei Key Laboratory of Coal Conversion and New Carbon Material, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan, 430081, PR China.
International journal of biological macromolecules
|January 31, 2026
Resumen
Los investigadores crearon un recubrimiento superhidrofóbico sostenible a partir de caparazones de camarones. Este versátil recubrimiento ofrece propiedades de autolimpieza, antibacterianas y fototérmicas, lo que demuestra una innovación de materiales respetuosa con el medio ambiente.
Área de la Ciencia:
- Ciencia de Materiales
- Química Verde
- Química de Superficies
Sus antecedentes:
- La degradación ambiental global exige materias primas sostenibles y renovables.
- Los caparazones de camarones desechados ofrecen una fuente viable y ecológica para el desarrollo de materiales.
- El quitosano (CS) derivado de los caparazones de camarones se puede utilizar para la fabricación de materiales avanzados.
Objetivo del estudio:
- Desarrollar recubrimientos superhidrofóbicos multifuncionales utilizando quitosano derivado de caparazones de camarones.
- Diseñar un recubrimiento con excelente repelencia al agua, efecto fototérmico, propiedades antibacterianas y de degradación de tintes.
- Explorar la aplicación de quitosano en materiales superhidrofóbicos para soluciones ambientales.
Principales métodos:
- Se extrajo quitosano (CS) de los caparazones de camarones.
- Se sintetizó óxido de grafeno (GO) y un compuesto de GO-óxido de zinc (GO-ZnO) (GO-ZnO).
- Se preparó un recubrimiento superhidrofóbico (CS-GO-ZnO-ODA) mediante reacción de base de Schiff con octadecilamina (ODA).
Principales resultados:
- El recubrimiento CS-GO-ZnO-ODA exhibió superhidrofobicidad con un ángulo de contacto con el agua (WCA) de 160,4° y un ángulo de deslizamiento (SA) de 7,2°.
- El recubrimiento demostró un efecto fototérmico significativo, alcanzando los 59,4 °C bajo luz solar simulada.
- El tejido de algodón modificado mostró una excelente durabilidad y poseía una fuerte actividad antibacteriana (>95%) y capacidades de degradación de tintes.
Conclusiones:
- El quitosano derivado de los caparazones de camarones se puede utilizar eficazmente para crear recubrimientos superhidrofóbicos multifuncionales.
- El recubrimiento desarrollado ofrece diversas funcionalidades que incluyen autolimpieza, actividad antibacteriana, fotodegradación, deshielo y separación de aceite-agua.
- Esta investigación amplía las aplicaciones del quitosano en superhidrofobicidad y proporciona información para el desarrollo de recubrimientos para exteriores.
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