Navegação Ciências Exatas e da Terra por Assunto "Nanocompósitos"
Resultados 1-20 de 21
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Adsorption of ionic liquid onto halloysite nanotubes : thermal and mechanical properties of heterophasic PE-PP copolymer nanocomposites
(2016) [Artigo de periódico]The surface adsorption of inorganic clays with ionic liquids has attracted much attention due to improve the interaction of hydrophilic clay with the hydrophobic polymers. However, successful organic adsorption strongly ... -
Caracterização viscosimétrica de nanocompósitos híbridos PS/POSS
(2012) [Artigo de periódico]Nanocompósitos híbridos de poliestireno (PS) e poliedros oligoméricos silsesquioxanos (POSS) com diferentes composições e graus de hibridização foram obtidos por processamento reativo no estado fundido utilizando-se peróxido ... -
Characterization of metal oxide-based gas nanosensors and microsensors fabricated via local anodic oxidation using atomic force microscopy
(2013) [Artigo de periódico]Thiswork reports on nanoscale and microscalemetal oxide gas sensors, consisting ofmetal-semiconductor-metal barriers designed via scanning probe microscopy. Two distinctmetal oxides, molybdenum and titaniumoxides, were ... -
Chitosan nanocomposites with graphene-based filler
(2019) [Artigo de periódico]This study evaluates the properties of chitosan (CS) membranes modified with different percentages (0.5%, 3%, and 5% w/w) of a graphene-based material. Graphene oxide (GO) and reduced graphene oxide (RGO) were obtained by ... -
Comment on “Superspin glass mediated giant spontaneous exchange bias in a nanocomposite of BiFeO3-Bi2Fe4O9”
(2015) [Artigo de periódico] -
Comparação entre nanocompósitos de polietileno/nanotubos de carbono e polietileno/nanolâminas de grafeno obtidos por polimerização in situ
(2014) [Artigo de periódico]Nanocompósitos de polietileno/nanotubos de carbono foram sintetizados através da polimerização in situ para serem comparados com nanocompósitos de polietileno/nanolâminas de grafeno, obtidos nas mesmas condições. Os ... -
Efeito do SBS epoxidado como um agente compatibilizante para obtenção de nanocompósitos de SBS/argila cloisite 10A
(2014) [Artigo de periódico]Atualmente, cargas nanométricas são utilizadas para desenvolver novos materiais poliméricos com melhor desempenho mecânico. Neste trabalho, foi empregada uma mistura de borracha termoplástica de poli(estireno-b-butadieno ... -
Estudo da dispersão de argilas organofílicas em nanocompósitos de prolipropileno obtidos pelo método em solução com auxílio de ultrassom
(2013) [Artigo de periódico]Nanocompósitos de polipropileno PP/OMMT foram preparados com o uso de duas argilas modificadas organofilicamente (C-15A e I-44P) e de um compatibilizante (PP-g-MA) pelo método em solução utilizando-se um banho de ultrassom. ... -
Evaluation of surfactants addition as compatibilizers for halloysite nanotubes filled polypropylene nanocomposites
(2014) [Artigo de periódico]PP nanocomposites were obtained with halloysite nanotubes (HNT) by melting blending using a twin screw extrusion. Some additives were used for obtaining good mechanical and thermal properties, such as PP-g-MA and nonionic ... -
Experimental and DFT study of GO-decorated CaO quantum dots for catalytic dye degradation and bactericidal potential
(2023) [Artigo de periódico]This research lays the groundwork for preparing graphene oxide (GO)-doped CaO nanocomposites for efficient antibacterial potential and dye degradation. The study aimed to reduce the recombination rate of the electron hole ... -
Hybrid polythiophene–clay exfoliated nanocomposites for ultracapacitor devices
(2012) [Artigo de periódico]Exfoliated nanocomposites of poly(3,4-ethylenedioxythiophene) (PEDOT) and montmorillonite (MMT) have been prepared by in situ anodic polymerization, concentrations of clay ranging from 5% w/w to 50% w/w being included in ... -
Influence of the polyhedral oligomeric silsesquioxane n-phenylaminopropyl - POSS in the thermal stability and the glass transition temperature of epoxy resin
(2013) [Artigo de periódico]In this study, epoxy nanocomposites containing different fractions of n-phenylaminopropyl (POSS) were prepared. The nanocomposites were studied by transmission electron microscopy (TEM), gel content, dynamicmechanical ... -
Magnetically stimulable graphene oxide/polypropylene nanocomposites
(2023) [Artigo de periódico]Core–shell magnetic air-stable nanoparticles have attracted increasing interest in recent years. Attaining a satisfactory distribution of magnetic nanoparticles (MNPs) in polymeric matrices is difficult due to magnetically ... -
Metal activated carbon as an efficient filler for high‐density polyethylene nanocomposites
(2020) [Artigo de periódico]interesting properties of magnetic nanocomposites have attracted attention of both academic and industrial researchers. In this work, thermal, mechanical, morphological, and magnetic properties of polyethylene (PE) ... -
Morphological, viscoelastic and mechanical characterization of polypropylene/exfoliated graphite nanocomposites
(2013) [Artigo de periódico]The viscoelastic, mechanical and morphological properties of polypropylene/exfoliated graphite nanocomposites with different contents of nanofiller were investigated. According to transmission electron microscopy results, ... -
Photocatalytic studies of tio2/sio2 nanocomposite xerogels
(2017) [Artigo de periódico]The use of titania-silica materials in photocatalytic processes has been proposed as an alternative to the conventional TiO2 catalysts, in order to facilitate the separation of products after the reaction. However, despite ... -
Polysulfone metal-activated carbon magnetic nanocomposites with enhanced CO2 capture
(2020) [Artigo de periódico]In the present study, polysulfone (PSF)-activated carbon nanocomposites were synthesized by a melt mixing technique. Here, 2 wt% activated carbon (CA, CA–Ni, and CA–Co) was used as filler, and effects on thermal, mechanical, ... -
Simple one-step method to synthesize polypyrrole-indigo carmine-silver nanocomposite
(2016) [Artigo de periódico]A nanocomposite of indigo carmine doped polypyrrole/silver nanoparticles was obtained by a one-step electrochemical process. The nanocomposite was characterized by scanning electron microscopy, infrared spectroscopy, ... -
Structural and Mössbauer characterization of the ball-milled Fe/sub x/(Al/sub 2/O/sub 3)/sub 100-x/ system
(2004) [Artigo de periódico]Metal-oxide composites were synthesized by high-energy ball milling of metallic iron (α-Fe) and alumina (α-Al2O3) powders, varying the starting relative concentration and the milling time. The samples were characterized ... -
Tunable reinforcement of epoxy-silica nanocomposites with ionic liquids
(2012) [Artigo de periódico]Imidazolium ionic liquids (ILs) have the capacity to exert multiple functions as additives for the formation of epoxy-silica nanocomposites, via the simultaneous sol–gel process and epoxy network build-up. This study ...