Análisis de membranas poliméricas compuestas por Microscopía de Fuerza Atómica
Atomic Force Microscopy analysis of polymeric composite membranes
Resumen
Entre los métodos más novedosos para la caracterización superficial de materiales sólidos se encuentra el microscopio de fuerza atómica, el cual permite obtener datos de rugosidad, porosidad y formación de nódulos en superficie. En el presente trabajo se prepararon membranas de triacetato de celulosa y nanopartículas de carbón activado por medio de evaporación de solvente en diferentes condiciones fisicoquímicas. Se utilizó el microscopio de fuerza atómica en su modalidad de “tapping” para la obtención de imágenes de altura y fase de la superficie de las membranas con el fin de estudiar la nanodispersión de las partículas en la matriz polimérica. En general las membranas más homogéneas se obtuvieron a bajas temperaturas (35 °C) y mayor humedad (70 % HR).
Citas
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