El Instituto Politécnico Nacional
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http://repositoriodigital.ipn.mx/handle/123456789/11241| Título : | Application of Differential Scanning Calorimetry to Evaluate Thermal Properties and Study of Microstructure of Biodegradable Films |
| Palabras clave : | Biodegradable films DSC SEM XRD |
| Fecha de publicación : | 16-ene-2013 |
| Editorial : | International Journal of Thermophysics - Springer |
| Descripción : | The glass transition temperature (Tg) and melting temperature (Tm) of gelatin–starch filmswere determined using differential scanning calorimetry.Also, th microstructure was observed using scanning electron microscopy (SEM) and the crystalline
structure by means of X-ray diffractio(XRD). The effect of starch and glycerol concentrations in films on the thermal properties was evaluated through response
surface methodology (RSM). The highest values of Tm were obtained at starch concentration intervals of (0.26 to 0.54) %w/w and glycerol concentrations lower than 0.5(%w/w). On the other hand, the Tg values diminished as the glycerol concentration
increased. Mathematical models for both transitions were fitted to the experimental
data. The micrographs obtained by SEM show the influence of glycerol in the microstructure of the films, being more “gummy” as the content of the plasticizer increased. The XRD patterns of the films demonstrate the existence of some pseudo-crystalline regions in the biodegradable materials. ORIGINAL ARTICLE published in journal Indexed Science Citation or JCR Centro de Investigación en Ciencia Aplicada y Tecnología Avanzada del IPN |
| URI : | http://www.repositoriodigital.ipn.mx/handle/123456789/11241 |
| Otros identificadores : | 0195-928X http://hdl.handle.net/123456789/766 |
| Aparece en las colecciones: | Doctorado |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| Application of Differential Scanning Calorimetry.pdf | 61.72 kB | Adobe PDF | Visualizar/Abrir |
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