Banca de QUALIFICAÇÃO: LUIZ FELIPE DA HORA
Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.STUDENT : LUIZ FELIPE DA HORA
DATE: 11/09/2020
TIME: 14:00
LOCAL: Remotamente pelo Google Meet
TITLE:
Obtaining nanolatexes by semi-continuous emulsion polymerization and its application as a pigment binder in soy protein fibers.
KEY WORDS:
nanolatex, binder, Soybean fabric protein, Basic Red 46.
PAGES: 72
BIG AREA: Ciências Exatas e da Terra
AREA: Química
SUBÁREA: Química Orgânica
SPECIALTY: Polímeros e Colóides
SUMMARY:
In this work, the nanolatexes were produced by semi-continuous emulsion polymerization. Parameters such as monomeric composition), initiator and surfactant type were investigated in order to obtain a nanolatex with small particle size and high functionalized surface area. Then the nanolatex was used as a binder to improve the dyeing process soybean protein fiber (SBF) fabric with Basic Red 46 pigment. The best monomer composition was the one with the following ration in mass BA/MMA/MAA (5:4:1). The best performance as an initiator was presented by APS, and the SDS had the best performance as a surfactant. The polymeric particles were analyzed by techniques such as: gravimetry, DLS, SEM, TEM, FTIR, Zeta Potential, tensiometry, and conductometry titration. Nanolatexes with particle size as small as 29 nm and surface charge up to até 93.8 μC/cm2 were obtained for some nanolatexes. The nanolatex efficiency as a binder in dyeing process was evaluate by colorimetric data using the Kubelka-Munk equation. Preliminary tests showed that the fabrics functionalized with nanolatex obtained an increase of up to 13% in the dyeing process, showing itself as a promising product as a binder in the textile industry.
BANKING MEMBERS:
Externo ao Programa - 2941160 - JOSE HERIBERTO OLIVEIRA DO NASCIMENTO
Interno - 1198847 - JOSE LUIS CARDOZO FONSECA
Externa ao Programa - 2212519 - JULIANA DE SOUZA NUNES