Banca de DEFESA: CHAIANE NEUMANN

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : CHAIANE NEUMANN
DATA : 30/06/2022
HORA: 14:00
LOCAL: Campus Feliz (defesa online)
TÍTULO:

INTERACTION BETWEEN TYPE I AND II COAGENTS AND POLYBUTADIENE ISOMERS ON CROSSLINKING SYSTEMS USING ORGANIC PEROXIDE

PALAVRAS-CHAVES:

polybutadiene, organic peroxides, crosslinking systems, coagents

PÁGINAS: 31
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
ESPECIALIDADE: Polímeros, Aplicações
RESUMO:

This study aims to evaluate the impact of different polybutadiene isomers in crosslinking systems via organic peroxides using type I and type II coagents. For the study, dicumyl peroxide (DCP) was used in association with EGDMA (ethyleneglicol dymethacrylate) and TAIC (triallylcyanurate) coagents in the crosslinking of high cis-1,4-butadiene and high 1,2 polybutadiene (vinyl) isomers. The results presented to the moment are consistent with the literature, whose studies show that elastomers with high 1,2-butadiene content are more reactive in organic peroxide systems. Coagents are maintaining their presumed behavior in crosslinking with peroxides, where the type I coagent (EGDMA) modifies the crosslinking kinetics, whereas the type II coagent (TAIC) maintains the original curing characteristics. Up to this moment, preliminary conclusions are consistent with literature, and lead to the understanding that polybutadiene with high vinyl content is highly more reactive than its isomer cis. However, it stands out the increasing of crosslinking index when added coagent type I to the vinyl isomer.

MEMBROS DA BANCA:
Presidente - 2383615 - DAIANE ROMANZINI
Interno - 1997577 - ALEXANDRE LUIS GASPARIN
Interno - 3162537 - MARA ZENI ANDRADE
Externo à Instituição - ANA MARIA COULON GRISA - UCS