MARIANA DO NASCIMENTO SARTORI

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Preparation and characterization of PBT/clay nanocomposite
2012 - SARTORI, MARIANA N.; OLIVEIRA, RENE R.; DIAZ, FRANCISCO R.V.; ORTIZ, ANGEL V.; RANGARI, VIJAYA K.; MOURA, ESPERIDIANA A.B.
This work presents the preparation and characterization of a nanocomposite based on Poly(butylene terephthalate) PBT and Brazilian smectitic clay (bentonite chocolate clay). Before being incorporated as clay nanoparticles in PBT resin, the clay was organically modified by the addition of a quaternary salt and sodium carbonate. PBT/Clay nanocomposite (96.3:3.70 wt %) was obtained by using a twin-screw extruder machine. After extrusion process, the nanocomposite was characterized by tensile, flexural and impact tests, SEM, Vicat, HDT, DSC, TGA and XRD tests. The results showed that the properties of the nanocomposite obtained were superior to those of neat PBT. Concerning the temperature of thermal distortion (HDT) an expressive gain of around 45 % was presented to PBT/Clay nanocomposite compared to PBT evidencing the interaction of nanofiller with the polymeric matrix.
Inchamento de argilas organofilicas em solventes orgânicos
2012 - PEREIRA, AMANDA C.S.; FERREIRA, MAIARA S.; SARTORI, MARIANA N.; MOURA, ESPERIDIANA A.B.; DIAZ, FRANCISCO R.V.
Studies of thermo-mechanical properties of PBT/clay nanocomposite treated by electron-beam radiation
2011 - SARTORI, MARIANA N.; NOGUEIRA, BEATRIZ R.; DIAZ, FRANCISCO R.V.; MOURA, ESPERIDIANA A.