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Nanocompósito de poli(oxido de etileno) reforçado com nanocristais de celulose extraídos da fibra de tucum
(Universidade Federal de São Carlos, 2018-04-26)
The using of a nonrenewable resources in the production of new materials, in particular synthetics plastics, it is a cause for concern and environmental call ones due to its long degradability time. Although a lot of ...
Estudo das propriedades dinâmico mecânicas e de biodegradação de acetatos de celulose com diferentes graus de substituição
(Universidade Federal de São Carlos, 2016-04-11)
Currently, seek to technologies for new materials that minimize environmental problems, it leads researchers to develop polymers from renewable and biodegradab le sources, such as cellulose and ...
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, ...
Adição de resíduo termofixo em matriz de polipropileno reciclado: análise de propriedades térmicas e mecânicas.
(Universidade Federal de São Carlos, 2017-12-15)
The proper disposal of solid waste has driven studies to enable the use of recycled materials and waste. So, in this work were molded composites using raw materials from industrial waste and evaluated several mechanical ...
Preparação e caracterização de filme de PVA/Quitosana/Colágeno visando a aplicação como curativo cutâneo
(Universidade Federal de São Carlos, 2017-06-28)
One of strong associations between polymers as biomaterials are in field of skin reparation. Polymers are utilized for this purpose, some such as poly (vynil alcohol) (PVA) are used due to characteristics such as ...
Termogravimetria aplicada para caracterização da biomassa
(Universidade Federal de São Carlos, 2018-03-02)
Issues related to renewable energy have been increasingly addressed and discussed. In this
context, biomass is an alternative for the generation of renewable and available energy. Its
use, instead of fossil fuels, helps ...
Desenvolvimento de filmes finos de organosilicone depositados a plasma para fotoproteção do polipropileno
(Universidade Federal de São Carlos, 2019-02-26)
Polypropylene (PP) is a polymer used industrially on a large scale. However, the PP has limitations in external use due to its sensitivity to photodegradation, when exposed to the elements. This limits the options of use ...
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 ...
Desenvolvimento e caracterização de filmes poliméricos de amido de milho com incorporação de fibras de bagaço de cevada
(Universidade Federal de São Carlos, 2020-03-25)
Interest in the use of starch for biodegradable films is growing due to being a natural, renewable, abundant and low cost source. However, starch films generally have low values of mechanical properties. Thus, this work ...
Aproveitamento de resíduos agroindustriais: caracterização físico–química e produção de carvão para energia
(Universidade Federal de São Carlos, 2018-02-23)
El carbón vegetal tiene gran participación en el mercado brasileño y es consumido actualmente en su mayoría por la industria de hierro fundido. Aunque su producción tradicional es a partir de madera, otras fuentes como la ...