Search
Now showing items 1-10 of 18
Obtenção de nanofibras de celulose a partir de resíduos da indústria fumageira
(2016-02-25)
In the 2013/14 harvest, Brazil produced 751,000 tons of tobacco leaves. Tobacco industry employs tobacco leaves for cigarette and cigar production. About 4% of the tobacco leaves processed become a waste, which is basically ...
Conversão termoquímica de capim-elefante em reator rotativo
(2016-07-25)
In recent years, renewable energy has received increased importance due to increased anthropogenic emissions of greenhouse gases to the atmosphere. Biomass is a promising renewable resource for the production of energy. ...
Avaliação da transferência de oxigênio em biorreatores de agitação mecânica e airlift visando à produção de pectinases por Aspergillus oryzae
(2016-04-29)
In stirred tank reactors (STR), circulation and mixing of fluid are influenced by the reactor configuration and by how the impellers and the gas spargers are arranged in them. On the other hand, in airlift bioreactors, ...
Influência da adição de diferentes oligômeros poliédricos de silsesquioxano (POSS) incorporados na resina epóxi no desempenho à corrosão em substrato de aço de baixa liga
(2016-07-05)
The epoxy resin is one of the matrices most used in manufacturing composites and coatings. It is highlighted in the group of thermosetting materials due to good processability, mechanic behavior and thermal stability. ...
Obtenção e caracterização de tintas em pó base epóxi/poliéster com incorporação de argilominerais : montmorilonita (MMT) e mica muscovita
(2016-06-20)
One of metallic substrates protection systems most commonly used in the industry is the paint. Factors favorable to the use of powder coatings include non-use of solvents, processing facilities/application and the possibility ...
Aerogéis hidrofóbicos de nanofibras de celulose
(2016-07-05)
Desenvolvimento e construção de sensor magnetoelástico de pH com eletrônica portátil
(2016-08-09)
Sensors with magnetoelastic materials are being developed for possible wireless measurements. They show variation of the resonance frequency (decrease) when subjected to a loading mass. May be employed for detection and ...
Mistura polimérica de poli(ácido lático)/poli(etileno-co-acetato de vinila) com incorporação de polietilenoglicol e quitosana como agentes modificadores de propriedades
(2016-06-21)
Poly (lactic acid) (PLA) has been employed in the packaging area, however, in order to improve its processing features and tenacity. Polymer blends of PLA with poly(ethylene-co-vinyl-acetate) (EVA), polyethylene glycol ...
Produção bacteriana de poli(3-hidroxibutirato) a partir de lactose e soro de leite
(2016-07-01)
Polyhydroxyalkanoates are 100% biodegradable polymers produced intracellularly by bacteria, and have characteristics similar to petroleum-based polymers. They emerge as an alternative to recalcitrant polymers, that because ...