%0 Journal Article
%@nexthigherunit 8JMKD3MGPCW/3ESR3H2
%3 montanheiro_covalent.pdf
%4 sid.inpe.br/mtc-m21c/2019/02.08.16.47
%8 Jan.
%9 journal article
%@issn 0272-8397
%A Montanheiro, Thaís Larissa do Amaral,
%A Montagna, Larissa Stieven,
%A Machado, João Paulo Barros,
%A Lemes, Ana Paula,
%@secondarytype PRE PI
%B Polymer Composites
%D 2019
%N 1
%P 288-295
%@secondarymark A1_ENGENHARIAS_II A2_ENGENHARIAS_III A2_ENGENHARIAS_I B1_MATERIAIS B1_INTERDISCIPLINAR B2_CIÊNCIA_DE_ALIMENTOS B3_QUÍMICA B3_EDUCAÇÃO_FÍSICA B3_BIOTECNOLOGIA B4_ASTRONOMIA_/_FÍSICA
%T Covalent functionalization of MWCNT with PHBV chains: Evaluation of the functionalization and production of nanocomposites
%V 40
%X 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.
%@area FISMAT
%@electronicmailaddress thais.montanheiro@unifesp.br
%@electronicmailaddress
%@electronicmailaddress joao.machado@inpe.br
%@documentstage not transferred
%@group
%@group
%@group LABAS-COCTE-INPE-MCTIC-GOV-BR
%@orcid 0000-0003-4230-8161
%@usergroup simone
%@resumeid
%@resumeid
%@resumeid 8JMKD3MGP5W/3C9JHER
%@affiliation Universidade Federal de São Paulo (UNIFESP)
%@affiliation Universidade Federal de São Paulo (UNIFESP)
%@affiliation Instituto Nacional de Pesquisas Espaciais (INPE)
%@affiliation Universidade Federal de São Paulo (UNIFESP)
%@versiontype publisher
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@doi 10.1002/pc.24644
%2 sid.inpe.br/mtc-m21c/2019/02.08.16.47.32