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Estudo das propriedades antimicrobianas de filmes de nanocelulose e nanopartículas de prata
(Universidade Federal de São Carlos, 2019-03-28)
Silver is an element with widely recognized bactericidal activity. Its use in the modification of materials has been studied for decades and its use goes through different forms of incorporation in the matrices of interest, ...
Avaliação do potencial antioxidante do tanino vegetal da Acácia negra em matrizes poliméricas de poliestireno após processo de envelhecimento acelerado
(Universidade Federal de São Carlos, 2022-04-26)
Nowadays, environmental sustainability is in the focus of the most important topics in materials science, and therefore, bio-based resources have become fundamental for the improvement of materials. When natural components ...
Determinação de aminas biogênicas em amostras de alimentos utilizando a eletroforese capilar
(Universidade Federal de São Carlos, 2019-04-26)
Food safety issues usually relate several quality indicators, such as biogenic amines (BAs). These BAs are produced by all living organisms, possess biological activity and may be present in a variety of foods and beverages. ...
Obtenção de nanocelulose a partir da funcionalização da celulose por oxipropilação
(Universidade Federal de São Carlos, 2020-03-27)
The present study aimed to obtain functionalized nanocellulose through the oxypropylation reaction. Thereunto, the cellulose was submitted to an initial activation step with a sodium hydroxide solution, and then the reaction ...
Estudo da compactação de resíduos lignocelulósicos para utilização como combustível sólido
(Universidade Federal de São Carlos, 2011-02-08)
The production of energy from the combustion of lignocellulosic materials is an interesting way to waste recovery. Two main factors hampering the use of these residues as fuel are the low density and the high moisture ...
Filmes nanoestruturados de polianilina e argila para aplicação em sensores ambientais
(Universidade Federal de São Carlos, 2011-02-25)
In this study the development of environmental sensors began from the fabrication of nanoestrutured films obtained by the technique of Layer-by-Layer (LbL). The films of obtaining a nanocomposite material composed of ...
Géis de acetato de celulose reticulados: síntese, caracterização e estudos de adsorção de íons Cu+2
(Universidade Federal de São Carlos, 2011-03-15)
This paper reports the synthesis of gels derived from cellulose acetate, degree of substitution (DS) 2.5, through by esterification and crosslinking reactions between hydroxyl groups and acid dianhydride benzene- 1, 2, 4, ...
Influência da mescla de resinas uréia formaldeído e difenilmetano 4,4’- diisocianato (MDI) nas propriedades mecânicas e emissão de formaldeído de painéis de madeira aglomerada
(Universidade Federal de São Carlos, 2017-12-08)
Several studies take place in order to reduce and even extinguish formaldehyde use in its various applications. This is due to its classification as a carcinogen according to the International Agency for Research on Cancer ...
Obtenção de nanocelulose bacteriana de kombucha
(Universidade Federal de São Carlos, 2020-03-24)
In the last years, sustainable materials that provide less environmental impact are gaining special attention. In this context, cellulose, a natural and abundant polymer from several renewable vegetable and microbial ...
Desenvolvimento de um sistema de liberação utilizando nanotubos de TiO2
(Universidade Federal de São Carlos, 2020-07-24)
Titanium-based implants are being commonly used in the field of biomedicine due to their attractive biocompatibility and their mechanical properties that contribute to a better performance of the material. This dissertation ...