INVESTIGADORES
GOMEZ Cesar Gerardo
artículos
Título:
Study of the formation of biocomposite films based on polypropylene and their use in the attachment of methylene blue
Autor/es:
JESICA CAVALLO; CESAR G. GOMEZ; MIRIAM C. STRUMIA
Revista:
MACROMOLECULAR CHEMISTRY AND PHYSICS
Editorial:
WILEY-V C H VERLAG GMBH
Referencias:
Año: 2010 vol. 211 p. 1793 - 1802
ISSN:
1022-1352
Resumen:
Biocomposite PP-g-PAAc-CS films based on PP were generated and utilized as support of methylene blue, a thiazidic dye. Using a photograft polymerization of acrylic acid, the PP film was functionalized with carboxyl groups (PP-g-PAAc), which attached chitosan by electrostatic bond. A longer poly(acrylic acid) chain or a higher CS immobilization temperature led to a higher chain interpenetration and crosslinking reaction. Immobilized MB confirmed to possess redox activity from its reaction with ascorbic acid, where the dye decomposition rate (R0 d) increases together with the chain interpenetration, then decreasing with the increase in the crosslinking degree.
