@Article{CardosoGoAnSiTrCo:2021:FaCaNa,
               author = "Cardoso, Lays Dias Ribeiro and Gomes, Marin{\'e}s 
                         Chiquinquir{\'a} Carvajal and Antunes, Erica Freire and Silva, 
                         F{\'a}bio Santos and Trava-Airoldi, Vladimir Jesus and Corat, 
                         Evaldo Jos{\'e}",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)} and {Empresa Brasileira de 
                         Aeron{\'a}utica (EMBRAER)} and {Instituto Nacional de Pesquisas 
                         Espaciais (INPE)} and {Instituto Nacional de Pesquisas Espaciais 
                         (INPE)}",
                title = "Fast carbon nanotube growth on carbon fiber keeping tensile 
                         strength",
              journal = "Composite Interfaces",
                 year = "2021",
               volume = "28",
               number = "9",
                pages = "859--878",
             keywords = "carbon fiber, Carbon nanotube, floating catalyst, silicon oxide, 
                         tensile strength.",
             abstract = "This work developed a novel approach for carbon nanotube (CNT) 
                         direct deposition on carbon fiber (CF) tow surface by chemical 
                         vapor deposition (CVD), without degrading CF mechanical 
                         properties. This approach combines conditions for growth at 
                         low-temperature (650°C), small growth induction period for a fast 
                         growth and fast surface modification to enable the growth. The 
                         lower growth temperature comes from using the well-known equimolar 
                         C2H2/CO2 gas mixture. The floating catalyst from a liquid 
                         precursor (with high ferrocene concentration dissolved in hexane) 
                         reduced the growth induction period. Gentle surface modification, 
                         either by a mild oxidation of CF fiber with silicon containing 
                         sizing, or by desized CF exposition to a hexamethyldissiloxane 
                         (HMDSO) environment, create silicon oxide clusters. The X-ray 
                         Photoelectron Spectroscopy (XPS) analysis show that such clusters 
                         need to be in a higher oxidation stateSi(-O)2, Si(-O)3 and 
                         Si(-O)4to anchor catalyst and enable CNT growth. The first 
                         oxidation stateSi(-O)1is not enough. A resin droplet wetting test 
                         developed shows that even though the success in CNT growth, the 
                         entire processes decrease CF wetting, exposing the need for a 
                         resizing procedure. CF mechanical properties were characterized by 
                         single-filament and CF tow tensile strength tests.",
                  doi = "10.1080/09276440.2020.1817681",
                  url = "http://dx.doi.org/10.1080/09276440.2020.1817681",
                 issn = "1568-5543",
             language = "en",
           targetfile = "cardoso_fast.pdf",
        urlaccessdate = "08 maio 2024"
}