Search
Now showing items 21-30 of 33
Estudo da atividade eletrocatalítica de multicamadas metálicas de Ir/Pt e Cu/Pt eletrodepositadas sobre Pt(policristalina) para eletrooxidação de moléculas orgânicas pequenas
(Universidade Federal de São Carlos, 2013-09-26)
The search for alternative energy sources stead fossil fuel has driven the development of new energy generating devices. Among these, the Direct Alcohol Fuel Cells are a kind of device that directly convert chemical energy ...
Estudo do efeito do envelhecimento eletroquímico em filmes de poli(3-hexiltiofeno)
(Universidade Federal de São Carlos, 2014-10-24)
The study of the electrochemical aging of conductive polymers, including of polythiophenes, has been described in the literature. However, this paper proposed study, in addition to electrochemical aging of polyethylene ...
Modificação das propriedades dos polímeros de NBR carboxilado comerciais a partir da incorporação de nanopartículas sintéticas
(Universidade Federal de São Carlos, 2014-02-21)
Aiming to overcome the performance of polymers, a new class of hybrid materials has emerged by the fillers insertion into polymeric matrices. In this sense, silica nanoparticles with a diameter of 250 nm were modified by ...
Nanocompósitos para a liberação controlada de compostos triazínicos aplicados como defensivos agrícolas
(Universidade Federal de São Carlos, 2013-08-02)
This research proposed a preparation method for a nanocomposite, able to control the delivery of high quantities of an active compound, inserted on its matrix, in order to prospect an application for the controlled delivery ...
Síntese de nanopartículas semicondutoras de seleneto de zinco (ZnSe) aquoso e análise dos subprodutos decorrentes dessa síntese
(Universidade Federal de São Carlos, 2012-07-20)
Zinc selenide (ZnSe) is a semiconductor material, which band gap is about 2.7 eV. It has many applications as blue light emission diode, data storage devices, laser diodes and waveguides optical fibers. Despite these several ...
Confinamento de líquidos em nanoescala
(Universidade Federal de São Carlos, 2012-02-27)
The effects on the reduction of space on the structural properties of two liquids and a mixture thereof were analyzed with a definition of nanoscale confinement, based on carbon nanotubes. The methodology involves the use ...
Efeito de diferentes solventes nas propriedades fotoluminescentes do CaMoO4
(Universidade Federal de São Carlos, 2013-08-02)
The CaMoO4 has been extensively studied due to its luminescent emissions in the visible region of the electromagnetic spectrum at room temperature, presenting potential for technological applications including lasers, light ...
Desenvolvimento e estudo da estabilidade de nanoemulsões do tipo óleo em água com óleos vegetais
(Universidade Federal de São Carlos, 2011-10-11)
A low energy emulsification method was used to prepare o/w emulsions of sweet almond or Brazil nut oils stabilized by Tween 80 and Span 80. Stable nano emulsions with droplet size of 160 nm and 270 nm were obtained for ...
Estudo da estrutura de complexos de polieletrólitos sobre as propriedades de transporte de água e sais
(Universidade Federal de São Carlos, 2015-03-25)
Polyelectrolytes complexes (PECs) are defined as materials formed by combining oppositely charged polyelectrolytes together via ionic interaction. PECs have some unique physical properties such as non-solubility in common ...
Crescimento anódico e caracterização de óxidos coloridos de titânio em eletrólitos alternativos
(Universidade Federal de São Carlos, 2015-01-23)
A Studies on the anodic growth of oxides that passivate the biomaterial titanium, and their electrochemical, morphological and structural parameters were carried out in this work. The oxides were obtained galvanostatically ...