NDLI: Theoretical study of the scattering efficiency of rutile titanium dioxide pigments as a function of their spatial dispersion

Content Provider	Springer Nature Link
Author	Auger, Jean Claude Martinez, Vincent Arnaud Stout, Brian
Copyright Year	2008
Abstract	We propose an original theoretical framework to model the scattering efficiency of white paint films as a function of the volume fraction and spatial state of dispersion of rutile titanium dioxide pigments, taking into account electromagnetic couplings. Numerical calculations are performed using a multiple T matrix formalism on an “elemental” volume extracted from the bulk of the paint and which we model as pigments and fillers in a polymer matrix. Qualitative studies show that, due to the dependent scattering phenomenon, the size of fillers can modulate the magnitude of loss in scattering efficiency by modifying the spatial state of dispersion of the pigments in the polymer matrix. In particular, fillers whose size is comparable to the dimension of the pigments improve the scattering efficiency by impeding crowding. It is also shown that the optical properties of the bulk material at arbitrary concentration can be approximated by extrapolating the optical properties calculated on a limited number of scatterers.
Starting Page	89
Ending Page	97
Page Count	9
File Format	PDF
ISSN	15470091
Journal	JCT Research
Volume Number	6
Issue Number	1
e-ISSN	19353804
Language	English
Publisher	Springer US
Publisher Date	2008-06-28
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical property Opacity Rutile titanium dioxide pigment Dependent scattering Multiple scattering Spatial dispersion T-matrix formalism Materials Science Industrial Chemistry/Chemical Engineering Polymer Sciences Surfaces and Interfaces, Thin Films Tribology, Corrosion and Coatings
Content Type	Text
Resource Type	Article
Subject	Chemistry Surfaces, Coatings and Films Colloid and Surface Chemistry Surfaces and Interfaces

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