Wettability Contact Angle
Mostrando 13-24 de 44 artigos, teses e dissertações.
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13. Improved Thermal Stability and Wettability Behavior of Thermoplastic Polyurethane / Barium Metaborate Composites
In this paper, it was targeted to the enhance thermal stability and wettability behavior of thermoplastic polyurethane (TPU) by adding barium metaborate. TPU-Barium metaborate composites were prepared by adding various proportions of barium metaborate to TPU. The chemical structures of the composites were characterised by fourier transform infrared spectrosc
Mat. Res.. Publicado em: 26/02/2016
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14. Wettability and Morphological Characterization of a Polymeric Bacterial Cellulose / corn Starch Membrane
The uses of polymer blends have stimulated research to promote a better performance of existing raw materials. The implementation of blends in the production of polymeric membranes has shown great results in regenerative medicine and consequently it has improved the application of biomaterials in this area. This study aimed to evaluate the morphology and wet
Mat. Res.. Publicado em: 04/12/2015
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15. Early osseointegration driven by the surface chemistry and wettability of dental implants
Objective The objective of this study was to investigate the impact of two different commercially available dental implants on osseointegration. The surfaces were sandblasting and acid etching (Group 1) and sandblasting and acid etching, then maintained in an isotonic solution of 0.9% sodium chloride (Group 2). Material and Methods X-ray photoelectron spect
J. Appl. Oral Sci.. Publicado em: 2015-06
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16. Feasibility of RF Sputtering and PIIID for production of thin films from red mud
During the extraction of aluminum from bauxite, a waste of oxides containing traces of heavy metals in a highly alkaline matrix, called Red Mud (RM), is produced. In this study RM is characterized and the feasibility of using it as a precursor for the production of thin films by Plasma Sputtering and by Plasma Immersion Ion Implantation and Deposition (PIIID
Mat. Res.. Publicado em: 26/10/2014
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17. Direct-write assembly of 3D scaffolds using colloidal calcium phosphates inks
Additive manufacture techniques using concentrated colloidal inks are a promising approach for creating three-dimensional (3D) calcium phosphates scaffolds for bone repair and regeneration. Among those, the direct-write assembly allows building scaffolds with precise size and geometry. In the present work, commercial β-TCP and HA were used to produce two t
Matéria (Rio J.). Publicado em: 2014-03
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18. Benefits of oxygen and nitrogen plasma treatment in Vero cell affinity to poly(lactide-co-glycolide acid)
Cell adhesion on materials surface is critical because this phenomenon occurs before other events, as cell spreading, cell migration and cell differentiation. it is commonly accepted that the adhesion of cells on solid substrate is influenced by several substratum surface properties, such as wettability, surface charge, roughness and topography. plasma techn
Mat. Res.. Publicado em: 23/04/2013
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19. Characterization of the thermal conductivity, dynamic viscosity and contact angle of nanofluids based on gama-alumina nanoparticles in water / Caracterização da condutividade térmica, viscosidade dinâmica e ângulo de contato para nanofluidos baseados em partículas de alumina-gama em água
Este trabalho trata da caracterização de propriedades termodinâmicas e de transporte de nanofluidos baseados em nanopartículas de alumina em água para diferentes concentrações. Suspensões estáveis foram elaboradas por meio de um agitador ultrassônico. As seguintes propriedades foram analisadas: i) condutividade térmica com o método da sonda-linea
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/04/2012
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20. Addition of silver nanoparticles reduces the wettability of methacrylate and silorane-based composites
Incorporation of silver nanoparticles into composite resins is recommended for their reported antibacterial properties, but this incorporation can affect the wettability of such materials. Therefore, this study evaluated the effect of nano-silver addition to silorane-based and methacrylate-based composites on their contact angle. Nano-silver particles were a
Braz. oral res.. Publicado em: 2012-12
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21. Obtenção e caracterização de revestimentos híbridos à base de precursores alcoóxidos sobre o aço galvanizado
Galvanized steel presents a protective layer of Zn and Zn-Fe, obtained by hot dipping, which promotes the steel protection. However, the presence of this layer decreases the adhesion of paint systems and reduces the corrosion resistance. A very efficient method used to protect against the substrate corrosion is chromate layers, which provide excellent antico
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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22. Modificação de membranas de quitosana por plasma para uso biológico
Chitosan membranes have been modified by plasma, utilizing the following gases: nitrogen (N2), methane (CH4), argon (Ar), oxygen (O2) and hydrogen. The modified membranes by plasma were compared to the unmodified ones. The membranes were characterized by absorption assay, contact angle, atomic force microscopy (AFM). Also, permeability assay of sodium sulfam
Publicado em: 2009
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23. Análise do aparelho mucociliar e das propriedades reológicas do muco respiratório em portadores de câncer pulmonar e extra-pulmonar / Analysis of the respiratory mucus properties in cancer patients concerning the primary site of the disease: pulmonary or extra pulmonary tumors
Previous study (Zayas 1990) has suggested the existence of a better transportability by cilia in respiratory mucus of smoking patients who did not present lung cancer in comparison to lung cancer patients smoking similar packages/year. Our aim was to verify this hypothesis. We studied 16 smoking patients with lung cancer (mean packages/year = 58,78), 16 smok
Publicado em: 2009
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24. Avaliação da molhabilidade de soluções de tensoativos em aço inoxidável / Evaluation of wetting of surfactant solutions in Stainless steel
Com o crescente aumento da industrialização, provocado pela globalização do planeta, tornou-se cada vez mais comum a busca por materiais de alta resistência e durabilidade para os mais diversificados ramos de atividades. Assim, a produção e procura por materiais que atendam estas exigências tornou-se cada vez maior com o passar dos anos. Logo, um dos
Publicado em: 2009