Advanced search
Start date
Betweenand

PHBV and hydroxybutyrate functionalized CNT nanocomposite: kinetic study of crystallization and correlation with mechanical properties

Grant number: 17/24873-4
Support type:Scholarships in Brazil - Post-Doctorate
Effective date (Start): August 01, 2018
Effective date (End): July 31, 2020
Field of knowledge:Engineering - Materials and Metallurgical Engineering
Principal Investigator:Gilmar Patrocínio Thim
Grantee:Thaís Larissa do Amaral Montanheiro
Home Institution: Divisão de Ciências Fundamentais (IEF). Instituto Tecnológico de Aeronáutica (ITA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil
Associated research grant:11/21442-6 - Synthetic and natural polymers applied to tissue engineering, AP.TEM

Abstract

Poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) has potential for substitution of conventional thermoplastics; however it is a brittle polymer with low mechanical properties. The incorporation of Carbon Nanotubes (CNT) into PHBV matrix can improve its properties and allow its use for applications not yet explored. The study of the crystallization kinetics allows obtaining parameters which influence the nanocomposites' final properties. In this way, the objective of this work is to produce PHBV and functionalized CNT nanocomposites and to evaluate how CNT functionalization affects PHBV crystallization kinetics using the isoconversional method, and to correlate the results with the nanocomposites' mechanical properties. CNTs will be previously oxidized and subsequently functionalized with hydroxybutyrate. The nanocomposites will be produced by melt blending in a rotational homogenizer (DRAIS) with 0.5 wt% of CNT, and thereafter the melt will be hot pressed using a hydro-pneumatic press to obtain the samples. CNT functionalizations will be evaluated by infrared spectroscopy (FT-IR), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS) and Transmission Electron Microscopy (TEM). The nanocomposites will be characterized by Differential Scanning Calorimetry (DSC), X-Ray Diffraction (XRD), nanohardness, tensile and Izod impact tests. The fracture surface of the samples will be analyzed in stereoscope and the morphology of the nanocomposites will be evaluated by polarized light microscopy and by Field Emission Scanning Electron Microscopy (FEG-SEM). (AU)

Scientific publications (8)
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
RIBAS, RENATA GUIMARAES; BASTOS CAMPOS, TIAGO MOREIRA; SCHATKOSKI, VANESSA MODELSKI; CANUTO DE MENEZES, BEATRIZ ROSSI; DO AMARAL MONTANHEIRO, THAIS LARISSA; THIM, GILMAR PATROCINIO. alpha-wollastonite crystallization at low temperature. CERAMICS INTERNATIONAL, v. 46, n. 52, p. 6575-6580, APR 1 2020. Web of Science Citations: 0.
DA SILVA, THAIS FERREIRA; DE MELO MORGADO, GUILHERME FERREIRA; DO AMARAL MONTANHEIRO, THAIS LARISSA; MONTAGNA, LARISSA STIEVEN; FONSECA ALBERS, ANA PAULA; PASSADOR, FABIO ROBERTO. A simple mixing method for polyamide 12/attapulgite nanocomposites: structural and mechanical characterization. SN APPLIED SCIENCES, v. 2, n. 3 MAR 2020. Web of Science Citations: 0.
RIBAS, RENATA GUIMARDES; SCHATKOSKI, VANESSA MODELSKI; DO AMARAL MONTANHEIRO, THAIS LARISSA; CANUTO DE MENEZES, BEATRIZ ROSSI; STEGEMANN, CRISTIANE; GONSALVES LEITE, DOUGLAS MARCEL; THIM, GILMAR PATROCINIO. Current advances in bone tissue engineering concerning ceramic and bioglass scaffolds: A review. CERAMICS INTERNATIONAL, v. 45, n. 17, A, p. 21051-21061, DEC 1 2019. Web of Science Citations: 0.
DO AMARAL MONTANHEIRO, THAIS LARISSA; CANUTO DE MENEZES, BEATRIZ ROSSI; RIBAS, RENATA GUIMARAES; MONTAGNA, LARISSA STIEVEN; BASTOS CAMPOS, TIAGO MOREIRA; SCHATKOSKI, VANESSA MODELSKI; NIETO RIGHETTI, VICTOR AUGUSTO; PASSADOR, FABIO ROBERTO; THIM, GILMAR PATROCINIO. Covalently gamma-aminobutyric acid-functionalized carbon nanotubes: improved compatibility with PHBV matrix. SN APPLIED SCIENCES, v. 1, n. 10 OCT 2019. Web of Science Citations: 0.
DO AMARAL MONTANHEIRO, THAIS LARISSA; MONTAGNA, LARISSA STIEVEN; PATRULEA, VIORICA; JORDAN, OLIVIER; BORCHARD, GERRIT; RIBAS, RENATA GUIMARAES; BASTOS CAMPOS, TIAGO MOREIRA; THIM, GILMAR PATROCINIO; LEMES, ANA PAULA. Enhanced water uptake of PHBV scaffolds with functionalized cellulose nanocrystals. Polymer Testing, v. 79, OCT 2019. Web of Science Citations: 0.
MONTANHEIRO, T. L. A.; CAMPOS, TIAGO M. B.; MONTAGNA, L. S.; DA SILVA, A. P.; RIBAS, R. G.; DE MENEZES, BEATRIZ R. C.; PASSADOR, F. R.; THIM, G. P. Influence of CNT pre-dispersion into PHBV/CNT nanocomposites and evaluation of morphological, mechanical and crystallographic features. MATERIALS RESEARCH EXPRESS, v. 6, n. 10 OCT 2019. Web of Science Citations: 0.
DA SILVA, DIEGO MORAIS; CANUTO DE MENEZES, BEATRIZ ROSSI; NONATO BEZZON, VINICIUS DANILO; DO AMARAL MONTANHEIRO, THAIS LARISSA; DE MACEDO, ERENILDA FERREIRA; TADA, DAYANE BATISTA; PETRACONI, GILBERTO; THIM, GILMAR PATROCINIO. Phase transition of TiO2 nanoparticles into titanate nanorods via hydrothermal reactions. SN APPLIED SCIENCES, v. 1, n. 8 AUG 2019. Web of Science Citations: 0.
CANUTO DE MENEZES, BEATRIZ ROSSI; RODRIGUES, KARLA FAQUINE; DA SILVA FONSECA, BEATRIZ CARVALHO; RIBAS, RENATA GUIMARAES; DO AMARAL MONTANHEIRO, THAIS LARISSA; THIM, GILMAR PATROCINIO. Recent advances in the use of carbon nanotubes as smart biomaterials. JOURNAL OF MATERIALS CHEMISTRY B, v. 7, n. 9, p. 1343-1360, MAR 7 2019. Web of Science Citations: 9.

Please report errors in scientific publications list by writing to: cdi@fapesp.br.