Marcio Rodrigo Loos
Universidade Federal de Santa Catarina
Ultimate tensile strengthComposite materialFourier transform infrared spectroscopyEpoxyPolymer chemistryMaterials scienceModulusPhosphoric acidDicarboxylic acidPolyvinyl butyralIn situ polymerizationFiller (packaging)GrapheneChemical engineeringCarbon nanotubePolymerThermal stabilityThermogravimetric analysisDynamic mechanical analysisNanocomposite
31Publications
12H-index
574Citations
Publications 30
Newest
#1Jean Carlos Hoepfner (UDESC: Universidade do Estado de Santa Catarina)
Last. Sérgio Henrique PezzinH-Index: 19
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In this work, polyvinyl butyral (PVB) nanocomposites reinforced with 0.5 to 2.5 wt% of graphene oxide (GO) were synthesized via „in situ‟ polymerization. PVB was obtained by condensation of hydroxyl groups of polyvinyl alcohol (PVA) with butyraldehyde (BU) Thermogravimetric analyzes (TGA) showed the increase in the thermal conductivity of the nanocomposites compared to PVB. FTIR results showed the conversion of PVA to PVB, but no changes in the spectrum were observed for nanocomposites. Nuclear ...
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4 CitationsSource
#1Fernando F. Dall'Agnol (UFSC: Universidade Federal de Santa Catarina)H-Index: 11
#2Rodrigo A. Antunes (UFSC: Universidade Federal de Santa Catarina)
Last. Daniel den Engelsen (Brunel University London)H-Index: 16
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Heating a fluid causes a local expansion and the resulting buoyance of the rarefied fluid drives it upward. This phenomenon roughly defines heat convection. Convection is fairly well known due to our familiarity with a large number of convection systems in open air like candles, bonfires, barbecue grills, boiling pans, hot air balloons, etc. Most heat sources generate convection that can be seen or felt. Therefore, our common sense may trick us to conclude that heat sources will always drive flu...
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8 CitationsSource
#1Emerson Avelino Medeiros (UFSC: Universidade Federal de Santa Catarina)
#2Fabio Rafael Segundo (UFSC: Universidade Federal de Santa Catarina)H-Index: 3
Last. Marcio Rodrigo Loos (UFSC: Universidade Federal de Santa Catarina)H-Index: 12
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O presente trabalho tem por objetivo comparar duas atividades, uma elaborada na forma de experimentacao convencional e outra na forma de experimentacao em laboratorio virtual, para o ensino de Momento de uma Forca nas aulas de Fisica dos estudantes do 9° ano do Ensino Fundamental II. Para tanto, foi confeccionado um roteiro experimental para cada uma das atividades e discutidas vantagens e desvantagens na preparacao das mesmas, na execucao pelo professor e pelo aluno. Os resultados das comparaco...
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#1Emerson Avelino Medeiros (UDESC: Universidade do Estado de Santa Catarina)
#2Marcio Rodrigo Loos (UFSC: Universidade Federal de Santa Catarina)H-Index: 12
O presente trabalho tem por objetivo verificar e relatar o que os Parâmetros Curriculares Nacionais (PCNs) sugerem a respeito de temas de Fisica nos Ensino Fundamental I e II na area de Ciencias Naturais e comparar com o que os livros didaticos de Ciencias analisados pelo Programa Nacional do Livro Didatico (PNLD) 2016 e 2017 trazem a respeito. A comparacao mostra que, apesar de conteudos de Fisica serem contemplados nos PCNs desde os primeiros anos do Ensino Fundamental I, poucos destes conteud...
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#1Nayandeep K. Mahanta (Case Western Reserve University)H-Index: 7
#2Marcio Rodrigo Loos (UFSC: Universidade Federal de Santa Catarina)H-Index: 12
Last. Alexis R. Abramson (Case Western Reserve University)H-Index: 16
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The thermal conductivities of epoxy composites of mixtures of graphite and graphene in varying ratios were measured. Thermal characterization results showed unexpectedly high conductivities at a certain ratio filler ratio. This phenomenon was exhibited by samples with three different overall filler concentrations (graphene + graphite) of 7, 14, and 35 wt%. The highest thermal conductivity of 42.4 ± 4.8 W/m K (nearly 250 times the thermal conductivity of pristine epoxy) was seen for a sample with...
33 CitationsSource
#1Marcio Rodrigo LoosH-Index: 12
#1Marcio LoosH-Index: 3
In our daily life, we are surrounded by products, utensils, and equipment. To manufacture these things, materials are required. These materials have to withstand loads, insulate or conduct heat and electricity, accept or reject magnetic flux, transmit or reflect light, be stable in hostile environments, and perform all these functions without damaging the environment or costing too much. Moreover, after choosing the right material, there is a need to choose the best process for manufacture. The ...
7 CitationsSource
#1Marcio Rodrigo LoosH-Index: 12
#1Marcio LoosH-Index: 3
Carbon nanotubes exhibit extraordinary mechanical properties: the Young's modulus can be greater than one TPA. They are as stiff as diamond. The maximum strength can reach 200 GPa. These properties make nanotubes ideal for the manufacture of reinforced composites and nano-electromechanical systems.
4 CitationsSource
10 CitationsSource