Resumo

SALAZAR, Max Carlos  e  VALDERRAMA NEGRON, Ana. Preparation and characterization of depolymerised chitosan films and crosslinked with sodium tripolyphosphate. Rev. Soc. Quím. Perú [online]. 2013, vol.79, n.3, pp.195-208. ISSN 1810-634X.

This work has studied the preparation and characterization of chitosan films (CS) crosslinked with sodium tripolyphosphate (TPP), prepared by the solvent evaporation method. Initially we studied the depolimeryzation of chitosan with sodium nitrite to get different polymer molecular weights in the used polymer. For example, we obtained chitosans of 554.22kDa and 133.37kDaof molecular weight. Afterward, prepared and characterized chitosans films crosslinked with TPP, evidently the hydrogen brigde interaction with the polyanion through IR, SEM, TG; also was performed swelling studies, with the objetive of identified the type of kinetic model in which enable explain said phenomenon in these films.

Palavras-chave : Chitosan; sodium tripolyphosphate; depolymerization.

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