Banca de QUALIFICAÇÃO: HUGO CÉSAR GOMES SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : HUGO CÉSAR GOMES SILVA
DATE: 30/09/2022
TIME: 14:00
LOCAL: On-line
TITLE:

STUDY OF MECHANICAL, RHEOLOGICAL AND ELECTRICAL PROPERTIES OF LOW DENSITY POLYETHYLENE 

NANOCOMPOSITES PREPARED WITH GRAPHENE AND CARBON NANOTUBES

PAGES: 123
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
SPECIALTY: Polímeros, Aplicações
SUMMARY:

Polymeric nanocomposites containing carbon nanoparticles, such as nanotubes or graphene, have been studied in recent years aiming to improve different properties, such as electrical conductivity and mechanical properties. This work aims at the study of nanocomposites based on a matrix of low density polyethylene (LDPE) containing multiwall carbon nanotubes and graphene nanoplatelets to evaluate the effect of the addition of these nanoparticles on the mechanical, rheological and electrical properties. Carbon nanotubes and graphene were incorporated into the low density polyethylene through a high speed blender type mixer to promote better dispersion of the particles. In this work four types of LDPE were used, with different molar masses. Two formulations were obtained for each type of LDPE, a formulation with the addition of 1% multilayer carbon nanotube and another with 5% graphene
nanoplatelets. The distribution of the nanoparticles in the polymer matrix was analyzed by scanning electronic microscopy, and the mechanical properties were evaluated by tensile tests. Rheological properties within the linear
viscoelasticity regime were studied by parallel plate rheometry. The electrical conductivity of the samples will also be evaluated. The effects of the molecular structure of LDPE’s on the dispersion of nanoparticles, and on the limit of
mechanical and electrical percolation will be analyzed.

BANKING MEMBERS:
Presidente - Interno ao Programa - 2604737 - EVERALDO CARLOS VENANCIO
Membro Titular - Examinador(a) Externo ao Programa - 343.314.808-28 - ROGERIO RAMOS DE SOUSA JUNIOR - UFABC
Membro Titular - Examinador(a) Externo ao Programa - 1545738 - MARCIA TSUYAMA ESCOTE
Membro Suplente - Examinador(a) Interno ao Programa - 1671298 - RENATO ALTOBELLI ANTUNES
Membro Suplente - Examinador(a) Interno ao Programa - 2604128 - ALEXANDRE JOSE DE CASTRO LANFREDI