@Article{SilvaAlveTóthUeda:2011:StEfNi,
author = "Silva, Leide Lili G. da and Alves, Luciano Guimar{\~a}es and
T{\'o}th, Andr{\'a}s and Ueda, Mario",
affiliation = "{Technological Faculty of Pindamonhangaba (FATEC)} and Department
of Mechanical Engineering, S{\~a}o Paulo State University
(UNESP), Guaratinguet{\'a}, Brazil and Institute of Materials and
Environmental Chemistry, Chemical Research Center, Hungarian
Academy of Sciences, Budapest, Hungary and {Instituto Nacional de
Pesquisas Espaciais (INPE)}",
title = "A study of the effect of nitrogen and air plasma immersion ion
implantation treatments on the properties of carbon fiber",
journal = "IEEE Transactions on Plasma Science",
year = "2011",
volume = "39",
number = "11",
pages = "3067--3071",
month = "Nov.",
keywords = "adhesion properties, carbon fibers (CFs), composites, plasma
immersion ion implantation (PIII).",
abstract = "In this paper, plasma immersion ion implantation (PIII) treatments
of carbon fibers (CFs) are performed in order to induce
modifications of chemical and physical properties of the CF
surface aimed to improve the thermoplastic composite performance.
The samples to be treated were immersed in nitrogen or air glow
discharge plasma and pulsed at -3.0 kV for 2.0, 5.0, 10.0, and
15.0 min. After PIII processing, the specimens were characterized
by atomic force microscopy (AFM), scanning electron microscopy,
Raman spectroscopy, and X-ray photoelectron spectroscopy (XPS).
Surface morphology of as-received CFs exhibited some scratches
aligned along the fibers due to the fiber manufacturing process.
After both treatments, these features became deeper, and also, a
number of small particles nonuniformly distributed on the fiber
surface can be observed. These particles are product of CF surface
sputtering during the PIII treatment, which removes the epoxy
layer that covers as-received samples. AFM analyses of CF samples
treated with nitrogen depicted a large increase of the surface
roughness (Rrms value approximately six times higher than that of
the untreated sample). The increase of the roughness was also
observed for samples treated by air PIII. Raman spectra of all
samples presented the characteristic D-and G-bands at
approximately 1355 and 1582 cm(-1), respectively. Analysis of the
surface chemical composition provided by the XPS showed that
nitrogen and oxygen are incorporated onto the surface. The polar
radicals formed on the surface lead to increasing of the CF
surface energy. Both the modification of surface roughness and the
surface oxidation are expected to contribute for the enhancement
of CF adhesion to the polymeric matrix used for composite
manufacturing.",
doi = "10.1109/TPS.2011.2160293",
url = "http://dx.doi.org/10.1109/TPS.2011.2160293",
issn = "0093-3813",
language = "en",
targetfile = "05960797.pdf",
urlaccessdate = "04 maio 2024"
}