Banca de DEFESA: LETÍCIA SILVEIRA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : LETÍCIA SILVEIRA
DATE: 13/01/2022
TIME: 14:00
LOCAL: https://meet.google.com/vjf-qxoz-sfs
TITLE:

PRODUCTION AND CHARACTERIZATION OF BIOPOLYMER DERIVED FROM ALGINATE AND VANILIN

KEY WORDS:

Biopolymers; Biomaterials; Alginate; Vanillin; Optimization.

PAGES: 59
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Tecnologia Química
SPECIALTY: Polímeros
SUMMARY:

The use of biopolymers from renewable resources is highly studied and they are, in general, biodegradable, biocompatible and can be obtained at low cost. Biopolymers have many applications, for instance in health, known as biomaterial. In this way, this work aims to synthesize a biopolymer of alginate and vanillin using glycerol and calcium chloride as plasticizer and crosslinking agent, respectively. Using design of experiments, different biopolymers were produced and analysing the solubility and the swelling degree, the best region, regarding the application, was found, corresponding to the one using vanillin at concentration up to 0.015 g, and the calcium chloride, values higher than 0.090 g, obtaining films with solubility around 30 % and the swelling degree between 100 and 120 %. Regarding the process optimization it is concluded that the NBI method can analyze concave regions, predicting the optimal points and generating the Pareto chart with equispaced boundaries. The antimicrobial test allowed to observe the antimicrobial activity of the validated films in the optimization, as well as vanillin solution with calcium chloride and glycerol, comparing the results with the control film, obtaining an innibition halo only in the presence of vanillin. Thermal analyses of thermogravimetric analysis and differential scanning calorimetry demonstrated that the material has thermal stability. The biofilm produced shows potential for
application as a biomaterial.

BANKING MEMBERS:
Presidente - 1491686 - RENATA CAROLINA ZANETTI LOFRANO
Interna - 1861356 - CRISTIANE MEDINA FINZI QUINTAO
Externo à Instituição - MATEUS DE SOUZA AMARAL - UFOP