Banca de QUALIFICAÇÃO: LUANA DECHETI GAIKE

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : LUANA DECHETI GAIKE
DATE: 26/10/2023
TIME: 09:00
LOCAL: Farroupilha
TITLE:

Compatibility, morphological and mechanical properties of hybrid rubber NR/EPDM/graphene nanocomposites

KEY WORDS:

EPDM, NBR, graphene oxide, reduced graphene oxide

PAGES: 16
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUMMARY:

In this work, the effect of incorporating graphene oxide (GO) and reduced graphene oxide (rGO) on the morphology and mechanical properties of two elastomeric matrices with different polarities, EPDM and NBR, was evaluated. In order to increase the chemical interaction between the components of the blends, a compatibilizing agent modified with maleic anhydride was also tested. Samples were prepared using a two-roll open mill and characterized by scanning electron microscopy, tensile strength tests, hardness tests, and curing parameters. Morphological analysis revealed a more homogeneous distribution of rGO particles in the EPDM compatibilized matrix, with the sample containing 1 phr showing a simultaneous increase of 2.4 times in maximum stress and 2.3 times in elongation at break. In addition to increasing rigidity, rGO also influenced the curing process, regardless of the elastomer or blend analyzed. Despite similar polarity, the addition of GO did not promote significant changes in the NBR matrix, as well as in the EPDM/NBR 70/30 blend, even in the presence of the compatibilizing agent.

COMMITTEE MEMBERS:
Interna - 2383615 - DAIANE ROMANZINI
Externo à Instituição - JANAINA DA SILVA CRESPO - UCS