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Study of the functionalization effect of carbonaceous materials for the production of HDPE nanocomposites for aerospace applications

Grant number: 19/23844-6
Support type:Scholarships in Brazil - Master
Effective date (Start): July 01, 2020
Status:Discontinued
Field of knowledge:Engineering - Aerospace Engineering
Principal researcher:Luciana de Simone Cividanes Coppio
Grantee:Thais Cardoso de Oliveira
Home Institution: Divisão de Ciências Fundamentais (IEF). Instituto Tecnológico de Aeronáutica (ITA). Ministério da Defesa (Brasil). São José dos Campos , SP, Brazil
Associated scholarship(s):21/06899-1 - Hybrid bacterial cellulose/GO-chitosan nanofibers produced through forcespinning®, BE.EP.MS

Abstract

In the aerospace sector, high density polyethylene (HDPE) has been widely used as a barrier to galactic and solar cosmic rays. However, HDPE must be strengthened to achieve adequate mechanical strength for this purpose. Nano-scale reinforcements such as carbon nanotubes (CNTs) and graphene oxide (GO) can be incorporated into HDPE matrices to improve the mechanical properties of the matrix, especially when functionalized with nonpolar chemical groups. However, it is not yet clear in the literature how these reinforcers can be functionalized and added to the HDPE matrices homogeneously and with good adhesion at the reinforcement/polymer interface. Thus, the objective of this project is to study, following a design of experiments, the influence of different proportions of CNT and GO, both functionalized with alkane chains (octylamine), on the final properties of HDPE-based nanocomposites prepared by mechanic stirring of polymer fused with the reinforcements, and molded by compression. The adhesion properties at the interface and homogeneity, as well as the influence of the reinforcements on the polyethylene crystallization and the final mechanical properties will be studied. Finally, the best samples will be subjected to experimental measurements of gamma radiation transmission to calculate the attenuation coefficients to evaluate their cosmic ray shielding properties. The correlation between this information will allow to better study the CNT/GO/HDPE interaction, besides allowing the optimization of the composite processing to achieve a mechanical reinforcement suitable for the final applications. (AU)

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Scientific publications
(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)
DOS SANTOS, ALAN SILVA; OLIVEIRA, THAIS CARDOSO; RODRIGUES, KARLA FAQUINE; COUTINHO SILVA, AMANDA ALVARENGA; LAUER COPPIO, GUSTAVO JOSE; DA SILVA FONSECA, BEATRIZ CARVALHO; NUNES SIMONETTI, EVELYN ALVES; CIVIDANES, LUCIANA DE SIMONE. Amino-functionalized carbon nanotubes for effectively improving the mechanical properties of pre-impregnated epoxy resin/carbon fiber. Journal of Applied Polymer Science, v. 138, n. 46 JUL 2021. Web of Science Citations: 0.
DE OLIVEIRA, THAIS C.; FERREIRA, FILIPE V.; DE MENEZES, BEATRIZ R. C.; DA SILVA, DIEGO M.; DOS SANTOS, ALAN S.; KAWACHI, ELIZABETE Y.; SIMONETTI, EVELYN A. N.; CIVIDANES, LUCIANA S. Engineering the surface of carbon-based nanomaterials for dispersion control in organic solvents or polymer matrices. SURFACES AND INTERFACES, v. 24, JUN 2021. Web of Science Citations: 0.

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