Crystalinity
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. In vitro biomineralization of a novel hydroxyapatite/superhydrophilic multiwalled carbon nanotube nanocomposite using simulated body fluids
Nanobiomaterials based on superhydrophilic vertically-aligned multi-walled carbon nanotubes (VAMWCNT-O2) are promising for their properties and bone tissue biocompatibility. VAMWCNT-O2 films with nanohydroxyapatite (nHAp) aim to improve mechanical properties and biocompatibility of this new nanocomposite due to its resemblance to bone matrix structure. This
Mat. Res.. Publicado em: 08/03/2013
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2. Intersalação de caulinitas separadas de latossolos.
1984
Belém. Publicado em: 2011
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3. Synthesis and characterization of Eu3+ and Er3+ doped SiO2-ZrO2 based transparent glass ceramic nanocomposites via sol-gel process / Síntese e caracterização de nanocompósitos vitrocerâmicos transparentes a base de SiO2-ZrO2 dopados com íons Eu3+ e Er3+ via processo sol-gel
The preparation of transparent glass-ceramic based on the SiO2-ZrO2 doped with Eu3+ and Er3+ ions by the sol-gel methodology was the aim of this work. The structural and optical properties of the systems as a function of the time and temperature of annealing and also zirconium concentration are presented. The sol was prepared in acid solution and left in res
Publicado em: 2008
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4. Estudo da síntese da zeólita ZSM-5 a partir de argilas naturais
The synthesis of ZSM-5 zeolite was studied by three synthesis methods: standard synthesis, three day synthesis and synthesis employing clays (kaolin and montmorillonite). The raw materials and prepared materials were characterized by Chemical Analysis by X-Ray Fluorescence (XRF) and X-Ray Diffraction (XRD). The results show that it is possible to synthesized
Química Nova. Publicado em: 2007-02
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5. Preparation of spray dried chitosan microspheres with differents kinds of crosslinking agents useful in genic vaccination / Preparação de microesferas de quitosana por spray drying com diferentes tipos de reticulação para uso na vacinação genica
In recent years, chitosan, a natural cationic polysaccharide, has attracted considerable attention as a new non-toxic polymer having favourable characteristics such as biocompatibility, biodegradability and mucoadhesiveness. Chitosan has found several applications as a biomaterial in tissue engineering as well in controlling drug release by various routes of
Publicado em: 2005
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6. Caracterização de revestimentos de hidroxiapatia depositados por aspersão termica a plasma sobre a liga Ti-13Nb-13Zr para aplicação em implantes dentarios
The Ti-13Nb-13Zr alloy has been proposed as a new metallic biomaterials wich stands out for introducing in its fonnulation three of the four metallic elements of larger biocompatibility (Ti, Nb, Zr, Ta), besides introducing, low elasticity modulus and excellent corrosion resistance. The Ti-13Nb-13Zr alloy was obtained from powder metallurgy. Substrates of th
Publicado em: 2004
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7. "Películas Espessas de Carbeto de Silício, SiC, sobre Mulita" / Silicon carbide, SiC, thick films over mullite.
Crystalline silicon carbide, SiC, films were deposited on mullite by atmospheric pressure chemical vapor deposition (CVD) method. The characteristic of substrate surface determinate if the film will be dense or porous, while the deposition temperature defines its crystalinity and nucleation rate in film formation. During the mullite substrate preparation pro
Publicado em: 2001
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8. "Blendas de poli(alcool vinilico) e poli(vinil pirrolidona) : estudo do comportamento de fases"
The phase behavior of the blends of poly(vinyl alcohol). PVAI, and poly(vinyl pirrolidone), PVP, were studied by differential scanning calorimetry, DSC, infrared spectroscopy using Fourier transform-attenuated transmission reflectance, FTIR-ATR and dynamic-mechanical analyser, DMA. The molecular weight influence of PVP and hydrolysjs degree of PVAI were stud
Publicado em: 1995