@Article{MontanheiroMontMachLeme:2019:EvFuPr,
author = "Montanheiro, Tha{\'{\i}}s Larissa do Amaral and Montagna,
Larissa Stieven and Machado, Jo{\~a}o Paulo Barros and Lemes, Ana
Paula",
affiliation = "{Universidade Federal de S{\~a}o Paulo (UNIFESP)} and
{Universidade Federal de S{\~a}o Paulo (UNIFESP)} and {Instituto
Nacional de Pesquisas Espaciais (INPE)} and {Universidade Federal
de S{\~a}o Paulo (UNIFESP)}",
title = "Covalent functionalization of MWCNT with PHBV chains: Evaluation
of the functionalization and production of nanocomposites",
journal = "Polymer Composites",
year = "2019",
volume = "40",
number = "1",
pages = "288--295",
month = "Jan.",
abstract = "Multi\‐walled carbon nanotubes (MWCNT) were covalently
functionalized with
poly(3\‐hydroxybutyrate\‐co\‐3\‐hydroxyvalerate)
(PHBV) chains, through esterification reaction. Thereunto,
pristine MWCNT (P\‐MWCNT) were oxidized
(MWCNT\‐COOH) and posteriorly reduced (MWCNT\‐OH).
MWCNT\‐OH were used to produce MWCNT functionalized with
PHBV chains (MWCNT\‐PHBV). All functionalized MWCNT were
used to produce PHBV nanocomposites films with 0.5 wt% by solution
casting. Functionalization was evaluated by Raman spectroscopy and
thermogravimetry (TGA), and nanocomposites were characterized by
X\‐Ray Diffraction and contact angle measurements. Results
showed that functionalization with PHBV chains was successfully
performed and that the polymer chains were attached to MWCNT
surface, as expected. IG/ID ratio obtained from Raman curves was
reduced from 1.34 to P\‐MWCNT to 0.90 to
MWCNT\‐PHBV. TGA confirmed the presence of PHBV on MWCNT
surface, showing a peak at 236°C on the first derivative curve.
Crystallite size of PHBV on 020 plane was 11% larger with
introduction of MWCNT in nanocomposites. Contact angle was
increased with the introduction and functionalization of MWCNT.",
doi = "10.1002/pc.24644",
url = "http://dx.doi.org/10.1002/pc.24644",
issn = "0272-8397",
language = "en",
targetfile = "montanheiro_covalent.pdf",
urlaccessdate = "27 abr. 2024"
}