Informador Técnico
ISSN: 2256-5035 (Electrónico)
ISSN: 0122-056X (Impreso)
Formato: Electrónico / Acceso Abierto
Frecuencia: Números Semestrales
Revisión por Pares: Doble Ciego
Palabras clave
plastics
disposable materials
tensile stress
photodegradation
weight loss. plásticos
materiales desechables
resistencia a la tensión
fotodegradación
pérdida de masa
disposable materials
tensile stress
photodegradation
weight loss. plásticos
materiales desechables
resistencia a la tensión
fotodegradación
pérdida de masa
Cómo citar
Castellón Castro, C. A., Tejeda López, L. N., & Tejeda Benítez, L. P. (2016). Evaluación de la degradación ambiental de bolsas plásticas biodegradables. Informador Técnico, 80(1), 24–31. https://doi.org/10.23850/22565035.317
Resumen
Las bolsas plásticas son de uso desechable y se liberan al medio ambiente en cantidades crecientes. Por esta razón muchos fabricantes las están produciendo a base de materiales poliméricos degradables, como por ejemplo, los polihidroxialcanoatos y los polilactatos. En este trabajo se evaluó la degradabilidad por exposición al ambiente de bolsas plásticas declaradas como degradables por sus fabricantes, y se compararon con las convencionales. Se estudiaron tres parámetros como son pérdida de masa, absorción de agua y resistencia mecánica. Los resultados mostraron que las bolsas llamadas degradables presentaron mayor pérdida de masa, mayor absorción de agua, y menor resistencia mecánica antes y después de la exposición al ambiente que las bolsas convencionales, demostrando que las modificaciones químicas realizadas por los fabricantes realmente favorecen su degradación.
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Esta obra está bajo una licencia internacional Creative Commons Atribución-NoComercial-SinDerivadas 4.0.
Derechos de autor 2019 Servicio Nacional de Aprendizaje (SENA)
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