Titanium dioxide monodisperse particles

In 1970 Slepetys and Sullivan (77) computed the theoretical light scattering of rutile titanium dioxide as a function of particle size and particle size distribution. All previous work had been done upon monodispersed systems. 

As model samples for the verification of the PBFFF as a separation technique, colloidal samples of hematite and titanium dioxide with submicron monodisperse spherical particles were used. In the first example, the fractionation of titanium dioxide [Ti02 with the nominal diameter obtained by a transmission electron microscope (TEM) of 0.298 jLm] and hematite-I [a-Fe203(I) with nominal diameter obtained by TEM of 0.148 xm] spherical particles was succeeded by the PBSdFFF technique. Fig. la shows the fractionation of the Ti02 and a-Fe203(I) particles by the normal SdFFF mode of operation, and Fig. lb shows the fractionation of the same particles by the potential barrier mode of SdFFF. The latter is based on the difference of the total potential energy of interaction between the colloidal particles and the channel wall due to the variation of the ionic strength of the suspending medium. 

Monodisperse vinyl acetate/butyl acrylate latices were prepared with particle sizes between 200 and 1200 nm. They were used in a simple paint formulation with titanium dioxide as the only pigment Two optical methods were used for determination of the CPVC of these paints,... 

---