Tesis
Desenvolvimento e caracterização de membranas de borracha natural associadas à extrato aquoso de própolis de bijuí para tratamento de queimaduras
Fecha
2017-05-22Registro en:
ANDRADE, Karina Luzia. Desenvolvimento e caracterização de membranas de borracha natural associadas à extrato aquoso de própolis de bijuí para tratamento de queimaduras. 2017. 48 f. Dissertação (Mestrado em Ciência de Materiais) - Universidade Federal de Mato Grosso, Instituto de Ciências Exatas e da Terra, Barra do Garças, 2017.
Autor
Souto, Paula Cristina de Souza
http://lattes.cnpq.br/2161765071682282
Souto, Paula Cristina de Souza
277.680.138-10
http://lattes.cnpq.br/2161765071682282
Reinaque, Ana Paula Barcelos
256.830.168-60
http://lattes.cnpq.br/6456302022066024
277.680.138-10
Souza, Nara Cristina de
777.972.051-91
http://lattes.cnpq.br/4553201216593644
Institución
Resumen
Burn injuries result in a large financial expense for the treatment and are responsible for the
psychological, physical and social sequelae of the injured person. Currently we can find various
types of treatment on the market, such as topical agents and temporary skin substitutes. One of
the ways to take care of these injuries is through the use of dressings. Among the diverse
therapeutic options, the vegetal membrane derived from the natural rubber of the rubber tree
Hevea brasiliensis has stood out as a type of important dressing alone or even serve as a matrix
to aid the action of other active compounds, such as propolis, adding new biological or
Improving existing ones. In this sense, the present study aims to prepare and characterize a
system formed by natural rubber and aqueous extract of propolis for a possible application in
the treatment of injuries caused by burns. The membranes were prepared by magnetic stirring
of different proportions of the aqueous propolis extract (1%, 2.5% or 4%) together with natural
rubber and polymerized at temperatures of 27 and 60 ° C. After the formation of the membranes,
they were characterized by wettability tests, mechanical properties, optical microscopy and
absorption spectroscopy in the infrared region. Through the similarity of the spectra obtained
in the infrared analysis, we can verify the interaction between the components used in the
development of the membranes, demonstrating the obtaining of a new material. Through the
mechanical assay it was possible to verify that the membranes have high deformation capacity,
evidenced by the low modulus of elasticity. In the wettability test the increase of the wettability
of the membranes was observed with the addition of aqueous extract of propolis in its
constitution, and this increase was proportional to the increase of the concentration of the
incorporated extract. As for the morphology of the membranes, the presence of the aqueous
propolis extract made the surface of the membranes more porous. Therefore, it is possible to
affirm that the junction of these two substances allowed the development of membranes with
better hydrophilic and deformation characteristics, providing good conditions for a possible
application as curative.