INVESTIGADORES
PETTARIN valeria
artículos
Título:
Polyethylene/(organo-montmorillonite)composites modified with ethylene/methacrylic acid copolymer: morphology and mechanical properties
Autor/es:
VALERIA PETTARIN; PATRICIA FRONTINI; VICTOR PITA; MARCOS LOPES DIAS; FRANCISCO VALENZUELA DIAZ
Revista:
COMPOSITES. PART A, APPLIED SCIENCE AND MANUFACTURING
Editorial:
Elsevier
Referencias:
Año: 2008 vol. 39 p. 1822 - 1828
ISSN:
1359-835X
Resumen:
Several composites based on high-density polyethylene (PE), organically modified montmorillonite (OMMT) and ethylene/methacrylic acid copolymer (EMAA) were prepared by melt compounding. Three Na+-montmorillonites (MMT) of different precedence were modified with hexadecyl trimethyl ammonium chloride in order to change their nature from hydrophilic to organophilic. The composites morphology was examined by XRD, SEM and TEM. Mechanical properties were evaluated under static conditions. A slight reinforcement was achieved only when OMMT was added to PE. When EMAA was added to the composites, it negatively interacted with OMMT, diminishing the interlayer distance of OMMT, changing the composite morphology, as if OMMT was not present in composites, and deteriorating their mechanical properties.