Processing and characterization of polypropylene (PP)/ethylene-vinyl acetate (EVA) blend-based glassy carbon (GC) composites

Author(s)

Ribeiro dos Anjos, Erick Gabriel ^[1] ; de Melo Morgado, Guilherme Ferreira ^[1] ; Vieira, Leonardo de Souza ^[1] ; Monteiro de Souza, Gabriel Portilho ^[1] ; Romeu Lino de Souza, Maria Fernanda ^[1] ; Nogueira, Iury Araujo ^[1] ; Alcantara Rodrigues, Lina Dayse ^[1] ; Wearn, Yves Nicolau ^[1] ; Passador, Fabio Roberto ^[1]

Affiliation

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

• Document type: Journal article
• Source: SN APPLIED SCIENCES; v. 2, n. 8 JUL 16 2020.
• Web of Science Citations: 0

Abstract

Polypropylene (PP)/ethylene-vinyl acetate (EVA) (60/40) blends-based glassy carbon (GC) composites with different contents of GC (0.1 to 5 wt%) were melting processed in a twin-screw extruder and the thermal, mechanical, electrical and morphological properties were evaluated to verify the effectiveness of the addition of GC as filler. Moreover, the effect of the addition of maleic anhydride grafted polypropylene (PP-g-MA) as a compatibilizer agent was also verified. The composites presented dispersed phase morphology with preferential localization of GC on interfacial regions and into the EVA phase. The mechanical properties were improved with the addition of PP-g-MA as a compatibilizer agent for the blend and the addition of GC had little influence on these properties. The results obtained from thermal properties revealed that the GC contributes to the increase in the degree of crystallinity and thermal stability of the composites. The addition of 0.1 wt% of GC increased the elastic modulus and the ultimate tensile strength without loss in the impact strength when compared to the compatibilized blend. The addition of GC increases a decade of magnitude in the electrical conductivity of the PP/EVA blends. (AU)

• FAPESP's process: 18/09531-2 - DEVELOPMENT OF MULTIFUNCTIONAL NANOESTRUCTURED GREEN COMPOSITES BASED ON POLY(FURFURYL ALCOHOL)/GRAFITE NANOSHEETS FOR AEROSPACE APPLICATIONS
• Grantee: Mirabel Cerqueira Rezende
• Support Opportunities: Regular Research Grants