title: Rheological behavior of poly(lactic acid)/synthetic mica nanocomposites.
abstract: Poly(lactic acid) nanocomposites were prepared with three synthetic fluoromicas in a twin-screw extruder. Sodium and two organomodified synthetic fluoromicas at different compositions were used. The effect of mica type and composition on the rheological behavior of the nanocomposites was evaluated. The sodium fluoromica did not have a significant effect on the poly(lactic acid) rheological properties, while addition of the organophilic micas to poly(lactic acid) has a strong effect on the rheology, showing a pronounced shear thinning behavior. The dynamic rheological studies revealed that the nanocomposites with organomica have a higher viscosity and more pronounced elastic properties than neat poly(lactic acid). Both storage and loss moduli increased with mica content.
authors.affiliation: Universidade Federal do Rio de Janeiro (UFRJ), Instituto de Macromoléculas Professora Eloisa Mano (IMA), Av. Horácio Macedo, 2.030, Centro de Tecnologia, B. J. 21941-598 Rio de Janeiro, Brazil. diegosaboya@gmail.com
authors.forename: D H S
authors.initials: DH
authors.lastname: Souza
authors.forename: C T
authors.initials: CT
authors.lastname: Andrade
authors.forename: M L
authors.initials: ML
authors.lastname: Dias
mesh_terms: D000538:Aluminum Silicates / Q000737:chemistry*; D055119:Elastic Modulus; D019344:Lactic Acid / Q000737:chemistry*; D008422:Materials Testing; D053761:Nanocomposites / Q000737:chemistry*; D011091:Polyesters; D011108:Polymers / Q000737:chemistry*; D012212:Rheology; D013818:Thermogravimetry; D014783:Viscosity
chemical_list: D000538:Aluminum Silicates; D011091:Polyesters; D011108:Polymers; D019344:Lactic Acid; C033616:poly(lactide); C011934:mica
keywords: Fluoromicas; Nanocomposites; Poly(lactic acid); Rheology; Somasif