Banca de DEFESA: EMANUELLY CAROLYNE MARQUES DE FARIAS NANES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : EMANUELLY CAROLYNE MARQUES DE FARIAS NANES
DATE: 19/04/2024
TIME: 09:00
LOCAL: Online
TITLE:

Development of new PCL/Propolis waste biomaterials – Use and valorization of beekeeping by-products

KEY WORDS:

Propolis, Miscibility, Poly(ε-caprolactone), Membranes

PAGES: 60
BIG AREA: Ciências da Saúde
AREA: Farmácia
SUBÁREA: Farmacotecnia
SUMMARY:

Extractive residues of natural origin are increasingly present in the development of bioplastics and improvements to already known polymers. The incorporation of active properties is an essential factor in the search for this waste, as they provide usefulness to a resource that is often discarded, offering financial profitability to the holders of this material, as disposal becomes an option. The main objective of this study was to produce membranes containing propolis extractive residue, red and green, at concentrations of 10, 25 and 50% in association with the Poly(ε-caprolactone) polymer. The method used for preparation was simple hot mixing with incorporation of the residue, followed by simple pressing. The residues were characterized by FTIR and HPLC. The membranes, in turn, were characterized by TG, SEM, FTIR, degradability and traction tests. As a result, it was noticed that the residues, according to FTIR and HPLC analyses, still contained relatively important compounds in the samples, such as many isoflavonoids with characteristics relevant in medicine. The membranes showed degradation peaks equivalent to the hours, days and weeks analyzed. The SEM result showed that, apparently, the membranes managed to be miscible, indicating some miscibility between the base polymer and the residues. The tensile test showed that although miscibility was effectively achieved in the production process, the membranes became less resistant compared to the Poly(ε-caprolactone) polymer alone. Thus, it was possible to prepare films containing PCL whose release of flavonoid compounds is facilitated, thus demonstrating the possibility of new applications, adding value to a residue from the propolis industry.

COMMITTEE MEMBERS:
Presidente - 1527220 - CAMILA BRAGA DORNELAS
Externo(a) à Instituição - LIGIA MARIA MANZINE COSTA
Externo(a) à Instituição - LUISE LOPES CHAVES
Externo(a) à Instituição - MÁRCIA REGINA DE MOURA AOUADA - UNESP