Banca de QUALIFICAÇÃO: SUELLEN ROCHA VIEIRA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : SUELLEN ROCHA VIEIRA
DATA : 25/08/2020
HORA: 08:00
LOCAL: Faculdade de Farmácia
TÍTULO:

Bionanocomposites from different polymeric matrices reinforced with cellulose nanoparticles obtained with ionic liquid

PALAVRAS-CHAVES:

Ionic liquid, cellulose nanoparticles, films, bionanocomposites, starch, chitosan

PÁGINAS: 39
GRANDE ÁREA: Ciências Agrárias
ÁREA: Ciência e Tecnologia de Alimentos
SUBÁREA: Ciência de Alimentos
ESPECIALIDADE: Química, Física, Fisico-Química e Bioquímica dos Alim. e das Mat-Primas Alimentares
RESUMO:

The production and characterization of cellulose nanoparticles (NPC-DM) using ionic liquid from the imidazolium family (dimethylaminopropylamine hexanoate - DMAPA), and the effect of their incorporation in starch and chitosan bionanocomposite films was studied. NPC-DM were evaluated for Zeta potential, X-ray diffraction, transmission electron microscopy, thermogravimetric analysis and infrared spectroscopy. The NPC-DM were incorporated into the starch (4% w / v) and chitosan (2% w / v) matrices in concentrations (0; 0.1; 0.2 and 0.3%), and as a plasticizer, if the glycerol. Bionanocomposites were made by casting and characterized in terms of thickness, humidity, total solids content, optical properties, water vapor permeability (PVA), thermogravimetric analysis and tensile testing. The NPC showed a yield of 27.82%, crystallinity index of 67.66% and high thermal stability. The addition of 0.2% NPC-DM significantly reduced (p <0.05) the PVA in the two matrices (49.1% starch and 25.6% chitosan), did not affect the visual characteristics and showed thermal stability. Thus, the use of DMAPA ionic liquid for NPC production is considered efficient, and the use of these in the preparation of bionanocomposites provides a new option for the packaging industry.

MEMBROS DA BANCA:
Presidente - 4725209 - CAROLINA OLIVEIRA DE SOUZA
Interno - 726.920.656-20 - RENATO SOUZA CRUZ - UEFS
Externo à Instituição - JAMILLE SANTOS SANTANA