@Article{KleinschmidtAlDoScMaCoAm:2016:FuNaPh,
               author = "Kleinschmidt, A. C. and Almeida, J. H. S. and Donato, R. K. and 
                         Schrekker, H. S. and Marques, Vagner Eduardo Caetano and Corat, 
                         Evaldo Jos{\'e} and Amico, S. C.",
          affiliation = "{Universidade Federal do Rio Grande do Sul (UFRGS)} and 
                         {Universidade Federal do Rio Grande do Sul (UFRGS)} and 
                         {Universidade Federal do Rio Grande do Sul (UFRGS)} and 
                         {Universidade Federal do Rio Grande do Sul (UFRGS)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Functionalized-carbon nanotubes with physisorbed ionic liquid as 
                         filler for epoxy nanocomposites",
              journal = "Journal of Nanoscience and Nanotechnology",
                 year = "2016",
               volume = "16",
               number = "9",
                pages = "9132--9140",
                month = "Sept.",
             keywords = "Carbon Nanotubes, Chemical Vapor Deposition, Interface Science, 
                         Ionic Liquid, Mechanical Properties, Nanocomposites.",
             abstract = "This research aimed to study the effect of different procedures 
                         for carbon nanotube (CNT) dispersion and functionalization in an 
                         epoxy matrix, following their effects on the mechanical and 
                         dynamic mechanical properties. In first instance, ionic liquid 
                         (IL) 1-n-butyl-3-methylimidazolium 
                         bis(trifluoromethanesulfonyl)imide (BMImNTf2) was identified as 
                         the best dispersant for unmodified CNT dispersion, compared to 
                         acetone and sodium dodecyl sulfate (SDS). Further optimization of 
                         the nanocomposite formulation was pursued through the dispersion 
                         of ten different chemically treated types of functionalized-CNT, 
                         plus an alternative route was performed by using the IL 
                         1-n-butyl-3- methylimidazolium chloride-BMImCl. The aim was to 
                         improve the nanofiller's functionalization, since this is directly 
                         related to the interaction and dispersion of nanoparticles into 
                         the polymer matrix. The association of IL BMImNTf2 dispersant with 
                         oxidized CNT provided high-performance epoxy/CNT nanocomposites, 
                         when the oxidation was promoted by a unique treatment, especially 
                         sulfuric acid or plasma application. It was sought to maximize 
                         most of the nanocomposites properties produced by combining the 
                         effect of oxidation with the application of ionic liquids, which 
                         are substances with high stabilization character. Compared to the 
                         neat resin, the nanocomposite treated via acid > O2 plasma> 
                         amination was 60% harder, and its Tg increased from 104°C to 
                         110°C. In contrast, treatments with surfactant and acetone 
                         weakened the CNT, resulting in a Tg between 96 and 98°C for 
                         nanocomposites.",
                  doi = "10.1166/jnn.2016.12906",
                  url = "http://dx.doi.org/10.1166/jnn.2016.12906",
                 issn = "1533-4880",
             language = "en",
        urlaccessdate = "28 abr. 2024"
}