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Showing 1 to 20 of 28 for “"FTIR-ATR"”.
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FTIR-ATR Characterization of Hydrogel, Polymer Films, Protein Immobilization and Benzotriazole Adsorption on Copper Surface
… (2EAE) to produce polymer films deposited on Si ATR crystal. Their moisture uptake property was tested using FTIR-ATR technique. This was evident by the decrease in -OH band in increasing N2 purging time of the films. Secondly, two monomer compounds namely vinyl acetic acid and glycidyl …
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Vibrational Spectroscopy and Atomic Force Microscopy Studies of Silane Adsorption onto Silicon and Glass.
… transform infrared attenuated total reflection, (FTIR-ATR), spectroscopy and by atomic force microscopy, (AFM). The rate of formation of the monolayers and the effect of surface coverage on the packing of these long-chain molecules was studied by both methods and the results compared. The silica …
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Utilización de técnicas termogravimétricas como herramienta de control de contaminación de sedimentos
… (TG) acoplados con espectrometría de infrarrojo (FTIR) están teniendo mucho éxito como herramienta predictiva y alternativa a la caracterización mediante métodos estandarizados de sustratos sólidos, como pueden ser los sedimentos de zonas de estuarios con mayor influencia de contaminación …
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Characterizaton of Triethoxyfluorosilane and Tetraethoxysilane Based Aerogels
… Methods of analysis for this study include FTIR-ATR, TEM, RBS, EDS, SEM, dielectric constant determination by impedance and surface area by gas adsorption. Si-F bonds were determined to be present in both acid- and base-catalyzed TEFS as well as HF-catalyzed TEOS. Fluorine promotes a fractal …
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Mid-Infrared Spectral Characterization of Aflatoxin Contamination in Peanuts
… in terms of spectral characteristics using FTIR-ATR. The effects of spectral pre-processing steps such as mean-centering, smoothing the 1st derivative and normalizing were studied. Logarithmic method was the best normalization technique describing the exponentially distributed spectral data. …
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Admicellar Polymerization to Compatibilize Calcium Carbonate With Oil-Based Drilling Mud
… transform infrared-attenuated total reflectance (FTIR-ATR) spectra analysis, and thermogravimetric analysis (TGA) of the treated CC and polymer extract confirmed the production of a successful thin film polystyrene-coated CC. The coarse CC size grade had the most polymer. Consequently, OBM …
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Improving Fried Product and Frying Oil Quality Using Nitrogen Gas in A Pressure Frying System
… or Fourier transform infrared spectroscopy (FTIR-ATR). Frying temperature and pressure affected fried food quality. An increase in frying pressure resulted in tender, juicier products with less oil uptake due to high moisture retention. An increase in frying oil temperature resulted in an …
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Characterisation of the cross-linking and calcification associated with glutaraldehyde-treated cardic bioprostheses.
… Techniques such as MALDI-TOF MS, ESI MS, NMR, FTIR-ATR and Raman spectroscopy were utilised to study the products of the glutaraldehyde reaction and their relationship with the calcification process. Data obtained from the products of the reactions between glutaraldehyde and model compounds …
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UV curable powder coatings for the finishing of leather
… to break have been studied by DSC, SEM, FTIR-ATR and DMTA methods. It was found that the polyurethane acrylate binders (made from DHBA, BEP, DEG and HDI etc.) are potentially useful for formulating novel powder coatings. The properties of the developed powder coating finished leather have …
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Effect of the Incorporation of Antiviral Fillers into 3D-Printing Resin
… thin films of these mixtures was measured using FTIR-ATR. The depth of cure was measured using the ISO4049 method. Flexural strength was assessed using specimens with a 2mm x 2mm x 20mm geometry in 3-point bend. Inclusion of up to 10 wt% of the fillers did not significantly affect the rate of …
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Partial discharge ageing of polymer insulation under combined AC and DC stress at elevated temperatures
… Infrared - Attenuated Total Reflection (FTIR-ATR) Spectroscopy and Dielectric Spectroscopy (DS) measurements were carried out. The performance of HDPE and PP were compared.
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In vivo and in vitro applications of biospectroscopy : potential use as a diagnostic tool which can provide insights into cell cycle dependent proliferation
… Infrared Attenuated Total Reflectance (FTIR-ATR) and Raman Spectroscopy as a novel approach for early identification and in depth classification of Endometriosis. An implementation of a non-invasive and high-throughput screening method would eliminate bias and thus reduce screening …
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The Role of Penetrant Structure on the Transport and Mechanical Properties of a Thermoset Adhesive
… on the mechanical properties of a polymer matrix were investigated. Although there is a vast amount of data on the diffusion of low molecular weight molecules into polymeric materials and on the mechanical properties of various polymer-penetrant systems, no attempts have been made to …
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DNA based biosensors for environmental and medical applications
… the sensor surface was also investigated through FTIR and FTIR-ATR spectroscopy respectively. The second kind of biosensor studied was a Genosensor, that is an analytical device where the biological recognition element is a single strand oligonucleotide sequence. These sequences referred as …
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Granulação do superfosfato triplo com biocarvão: cinética de liberação de P e eficiência agronômica
… X (DRX) e por espectroscopia no infravermelho (FTIR/ATR), respectivamente. Os elementos constituintes do BC e ST foram dosados por espectrometria de emissão óptica (ICP- OES). Os grânulos foram submetidos a ensaio de cinética de liberação de P sob fluxo contínuo de água. O ST liberou 94 % do …
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Síntese e caracterização de microesferas de alginato e caulinita incorporadas com agroquímicos para o controle de formigas cortadeiras do gênero Atta spp.
… de Infravermelho com Transformada de Fourier (FTIR-ATR) e Análise Termogravimétrica Acoplada a Análise Termica Diferencial (TGA-DTA), forneceram informações caracteríticas dos materiais precursores da síntese, confirmando a presença dos mesmos após a fabricação das íscas. Os testes de liberação …
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Spectroscopic Characterization of Molecular Interdiffusion at a Poly(Vinyl Pyrrolidone) / Vinyl Ester Interface
… properties of (woven carbon fiber / vinyl ester matrix) composites can be greatly improved if the interphase between the reinforcing high-strength low-weight fiber and the thermoset resin is made more compliant. In order to improve the adhesion of the vinyl ester matrix to the carbon fiber, a …
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Development of Catalyst on Polymer Support for Organic Compounds Destruction
… fibres, is one of the most often used polymer matrix for production of ion-exchange, chelating and redox fibres as well as catalysts (Ishtchenko V.V., 2000, Petrov S.V., 2000) or fibres with some specific properties, for example anesthetic fibres (Shkhundrich P. et al, 1995). An advantage of PAN …
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Síntesis de nanopartículas de litio y evaluación de su citocompatibilidad y capacidad para estimular la diferenciación osteogénica in vitro de células madre de la pulpa dental
… de Fourier de reflexión total atenuada (FTIR-ATR) y espectrofotometría. La bioactividad in vitro se evaluó mediante la capacidad para inducir la formación de apatita tipo ósea en fluido fisiológico simulado (SBF). Se evaluó citocompatibilidad de las nanopartículas y su capacidad para …
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Vibrational spectroscopy studies of interdiffusion in polymer laminates and diffusion of water into polymer membranes.
… transform infrared-attenuated total reflectance, FTIR-ATR spectroscopy. The effects of sulphonation level, annealing temperature, ionic concentration, and presence of some ionic species on diffusion of water into SPEES/PES has been examined. In addition the sorption and desorption processes, and …
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