Influence of particle size and glassy carbon content on the thermal, mechanical, and electrical properties ofPHBV/glassy carbon composites

Autor(es)

de Souza Vieira, Leonardo ; Montagna, Larissa Stieven ; Marini, Juliano ; Passador, Fabio Roberto

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Polymer Science; v. 138, n. 4, p. 15-pg., 2020-08-05.

Resumo

Glassy carbon (GC) constitutes a promising carbonaceous material that can be employed as an antistatic agent in the development of antistatic packaging used in the electronics industry. Thus, the present work aims at developing biodegradable and antistatic packaging from poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) reinforced with different GC contents (0, 0.5, 1.0, 2.5, and 5.0 wt%) and different GC particle size ( 75 mu m) using extrusion processing. differential scanning calorimetry analysis shows that the addition of GC decreases the degree of crystallinity (X-c) of PHBV, which can explain the reduction of its stiffness. Impedance spectroscopy results reveal that the use of GC contents greater than 2.5 wt% (GC > 75 mu m) makes possible the obtainment of a material with an electrical resistivity small enough to be used in antistatic packaging. It can be concluded that GC is an interesting alternative of antistatic agent for electrically dissipative packaging. (AU)

• Processo FAPESP: 18/09531-2 - Desenvolvimento de compósitos verdes nanoestruturados multifuncionais baseados em poli(álcool furfurílico)/nanolâminas de grafite para aplicações aeroespaciais
• Beneficiário: Mirabel Cerqueira Rezende
• Modalidade de apoio: Auxílio à Pesquisa - Regular