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Mostrando ítems 11401-11410 de 24444
Tratamento eletroquímico e físico-químico para efluente de lavanderia industrial têxtil
(Universidade Tecnológica Federal do ParanáLondrinaPrograma de Pós-Graduação em Engenharia Ambiental, 2015-03-26)
The textile industrial laundry is characterized by the variety of existing processes, the large volume of wastewater and high polluting load. Physical and chemical characterization of these effluents is important to determine ...
Caracterização e modelagem do comportamento mecânico de poliuretana enriquecida com carbonato de cálcio
(Universidade Tecnológica Federal do ParanáCornelio ProcopioBrasilPrograma de Pós-Graduação em Engenharia MecânicaUTFPR, 2015-05-11)
The biopolymers can be an alternative to petroleum-derived polymers, because they have the advantage of being obtained from a renewable carbon source. In this way the polyurethane (PU) derived from castor oil becomes a ...
Investigação da viabilidade técnica da utilização do ozônio para a polimerização da anilina
(Universidade Tecnológica Federal do ParanáFrancisco BeltraoBrasilEngenharia QuímicaUTFPR, 2021-12-10)
Polymers are macromolecules derived from the joining of many small molecule units, the monomers. A widely used and famous polymer is polyaniline (PAni). The present study aimed to evaluate the possibility of polymerizing ...
Estudo da obtenção e caracterização de micro/nanopartículas de acetato de celulose para liberação controlada de substâncias bioativas de administração oral
(Universidade Tecnológica Federal do ParanáCampo MouraoBrasilDepartamento Acadêmico de QuímicaLicenciatura em QuímicaUTFPR, 2019-07-09)
In the search for new transport media and drugs and bioactives that target only a quanty of administred substance, stand out the promising as forms of micro/nanoparticles. These machines can be used as biodegradable or ...
Obtenção e caracterização de filmes de amido termoplástico (TPS) adicionado de nanocelulose pela técnica casting film utilizando natural deep eutectic solvents (NADES)
(Universidade Tecnológica Federal do ParanáCampo MouraoBrasilDepartamento Acadêmico de Alimentos e Engenharia QuímicaEngenharia de AlimentosUTFPR, 2022-06-10)
Biopolymers are an alternative to polymers produced from petroleum in the packaging manufacture because they are generated from renewable sources and degrade faster. Starch has been considered very promising for the biofilms ...
Avaliação tribológica de compósitos de PTFE em ensaios tipo pino sobre disco
(Universidade Tecnológica Federal do ParanáCuritibaBrasilGraduação em Engenharia MecânicaUTFPR, 2016-11-29)
Recent studies in the laboratory of Surface and Contact Analysis in the UTFPR evaluated the tribological properties of pure polytetrafluoroethylene (PTFE) versus stainless steel, without lubrication, on pin-on-disc tests. ...
Caracterização microestrutural e análise de descarbonetação da rosca do grampo de mola do aço 4140M
(Universidade Tecnológica Federal do ParanáLondrinaBrasilEngenharia de MateriaisUTFPR, 2019-06-12)
The present work aims analyze the decarburization and the microstrucutre obtained in thread of the clamps for leaf spring suspension. The clamp is considered a safety item and as such needs special procedures to guarantee ...
Study of different chitosan/sodium carboxymethyl cellulose proportions in the development of polyelectrolyte complexes for the sustained release of clarithromycin from matrix tablets
(MDPI, 2021)
This study investigated the combination of different proportions of cationic chitosan
and anionic carboxymethyl cellulose (CMC) for the development of polyelectrolyte complexes
to be used as a carrier in a sustained-release ...
Brapecan: indústria de polietileno verde
(Universidade Tecnológica Federal do ParanáApucaranaBrasilEngenharia QuímicaUTFPR, 2021-05-11)
The use of plastics is highlighted in numerous industrial sectors, since they have properties that favor its use when compared to other materials. However, plastic resins, in general, originate from petroleum naphtha, a ...
Estudo da utilização da goma xantana como auxiliar no processo de floculação em tratamento de água para abastecimento
(Universidade Tecnológica Federal do ParanáCampo Mourao, 2013-09-09)
The conventional water treatment involves the addition of chemicals to the water in order to remove impurities and maintain the quality parameters according to the required law. Aluminum sulfate is the most commonly used ...