PERSONAL DE APOYO
ECHEVERRIA Ignacio
artículos
Título:
Carboxymethylcellulose?montmorillonite nanocomposite films activated with murta (Ugni molinae Turcz) leaves extract
Autor/es:
QUILAQUEO GUTIERREZ MARCELA; IGNACIO ECHEVERRÍA; IHL MÓNICA; BIFANI VALERIO; ADRIANA NOEMI MAURI
Revista:
CARBOHYDRATE POLYMERS
Editorial:
ELSEVIER SCI LTD
Referencias:
Lugar: Amsterdam; Año: 2012 vol. 87 p. 1495 - 1502
ISSN:
0144-8617
Resumen:
The functionality of nanocomposite films based on carboxymethylcellulose (CMC) and montmorillonite (MMT) activated with murta (Ugni molinae Turcz) leaves extract was studied. Films were prepared by casting from film-forming dispersions containing CMC, glycerol (used as plasticizer) and different concentrations of MMT, using water or murta extract as solvent. The addition of MMT increased the tensile strength and the elasticity modulus of the films, and decreased their permeabilities to water vapor, oxygen and carbon dioxide. Besides the antioxidants properties provided to the films, the addition of murta leaves extract changed the gas permeability in different forms according to the MMT content, and plasticized the nanocomposite matrix.
