@Article{MazzeuFarBalRezGon:2018:InReTi,
author = "Mazzeu, Maria Alice Carvalho and Faria, Lohana Komorek and Baldan,
Maur{\'{\i}}cio Ribeiro and Rezende, Mirabel Cerqueira and
Gon{\c{c}}alves, Emerson Sarmento",
affiliation = "{Departamento de Ci{\^e}ncia e Tecnologia Aeroespacial (DCTA)}
and {Universidade do Vale do Para{\'{\i}}ba (UNIVAP)} and
{Instituto Nacional de Pesquisas Espaciais (INPE)} and
{Departamento de Ci{\^e}ncia e Tecnologia Aeroespacial (DCTA)}
and {Departamento de Ci{\^e}ncia e Tecnologia Aeroespacial
(DCTA)}",
title = "Influence of reaction time on the structure of polyaniline
synthesized on a pre-pilot scale",
journal = "Brazilian Journal of Chemical Engineering",
year = "2018",
volume = "35",
number = "1",
pages = "123--130",
month = "jan.-mar.",
keywords = "Chemical reactor, spectroscopy, synthesis, conducting polymer.",
abstract = "The aim of this work is to follow the structural variations of
polyaniline (PAni) obtained by chemical oxidation on a pre-pilot
scale, with different reaction times. Synthesis of PAni is well
known, but when it is carried out on a pre-pilot scale, several
factors can lead to structural changes and understanding these
changes is important to improve controls on the synthesis process.
The polymers formed were characterized by spectroscopic techniques
(Raman spectroscopy, Fourier Transform Infrared - FTIR and
UV-Visible). Degree of oxidation and yield were calculated for
each reaction time. The analysis by FTIR, the calculated degree of
oxidation and the yield showed significant changes in polymer
structure at reaction times of 65 and 80 min. This result was
attributed to the excessive oxidation of PAni, with the breaking
of its polymer chain. The changes observed in the structure of
PAni gave subsidies to the optimization of the process of
obtaining polyaniline by chemical synthesis.",
doi = "10.1590/0104-6632.20180351s1s20160201",
url = "http://dx.doi.org/10.1590/0104-6632.20180351s1s20160201",
issn = "0104-6632",
language = "en",
targetfile = "mazzeu_influence.pdf",
urlaccessdate = "19 mar. 2024"
}