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Colour predictions in particulate matter from size and refractive index of particles / H. S. Shah in PAINTINDIA, Vol. L, N° 4 (04/2000)
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Titre : Colour predictions in particulate matter from size and refractive index of particles Type de document : texte imprimé Auteurs : H. S. Shah, Auteur ; M. S. Roy, Auteur Année de publication : 2000 Article en page(s) : p. 43-52 Note générale : Bibliogr. Langues : Anglais (eng) Tags : 'Etude théorique' Colorimétrie 'Indice réfraction' 'Dimension particule' 'Réflexion diffuse' expérimentale' Poudre 'Mélange binaire' ternaire' Pigment Index. décimale : 667.9 Revêtements et enduits Résumé : A theoretical relation correlating particle size and refractive index with diffuse reflectance of particulate system is proposed. Fundamental optical and morphological parameters of particulate systems are determined. Colourimetric curves of seven single component and fifteen binary/ternary mixtures are experimentally measured and compared with predicted curves determined using proposed relation. Overall performance evaluation of the theoretical formulation is made by determining colour difference between measured and calculated curves. Results show that the proposed method satisfactorily work to assess the colourimetric curves of particulate matter. The theoretical technique will be useful to study the colour change due to variation in size in pigment dispersions or chemical powders. Note de contenu : - Experimental : Preparation of samples - Methods of measurements
- Optical and morphological characterstics of particle : Particle size measurement - Determination of absorption index k - Results - Lambert-Beer absorption coefiecient of powdered samples - Reflectance spectra of single component system - Reflectance spectra of binary and ternary powdered mixturesPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12724
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