Effect of Carbon Nanotubes (CNT) Functionalization and Maleic Anhydride-Grafted Poly(trimethylene terephthalate) (PTT-g-MA) on the Preparation of Antistatic Packages of PTT/CNT Nanocomposites

Autor(es)

Braga, Natalia Ferreira ^[1] ; Zaggo, Henrique Morales ^[1] ; Montagna, Larissa Stieven ^[1] ; Passador, Fabio Roberto ^[1]

Afiliação do(s) autor(es)

^[1] Fed Univ Sao Paulo UNIFESP, Dept Sci & Technol, Polymer & Biopolymer Technol Lab TecPBio, 330 Talim, BR-12231280 Sao Jose Dos Campos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF COMPOSITES SCIENCE; v. 4, n. 2 JUN 2020.
• Citações Web of Science: 2

Resumo

Electronic devices require the use of antistatic packing to prevent electrostatic discharge during their storage or transport. Poly (trimethylene terephthalate) (PTT) is a polyester with excellent properties and can be a good candidate for this application. To make this insulating polymer an extrinsic conductor, carbon nanotubes (CNT) can be added to reduce the electrical resistivity of the nanocomposites. In order to facilitate the CNT distribution on polymeric matrix, it was proposed a chemical functionalization using nitric acid for the creation of functional groups on its surface. Moreover, the PTT matrix was modified with a compatibilizer agent based on maleic anhydride grafted PTT (PTT-g-MA), to improve interfacial adhesion between the nanofiller and matrix. In this work, nanocomposites based on PTT/PTT-g-MA/CNT were prepared by extrusion process, with 0.5 wt% and 1.0 wt% of CNT and functionalized CNT. CNT was characterized by stability dispersion in water, Raman spectroscopy, FTIR and XPS analysis, which prove the success of functionalization. The nanocomposites were evaluated by thermal analysis, tensile tests, electrical conductivity, and morphological analysis. The CNT functionalization and the addition of PTT-g-MA increased the dispersion and distribution of CNT in the PTT matrix. The electrical properties show that this material can be used as an antistatic packaging. (AU)

• Processo FAPESP: 18/05415-8 - Desenvolvimento de nanocompósitos de poli(tereftalato de trimetileno)/nanotubos de carbono para aplicações como embalagens antiestáticas
• Beneficiário: Henrique Morales Zaggo
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica