Fabrication and Characteristics of a Nano-TiO₂Concentrated Dispersion

Abstract

A high-concentration dispersion with nanometer TiO 2 particles has been fabricated by a hyperdispersant. The particle distribution, composition, viscosity, thermal stability were investigated by transmission electron microscopy, and laser size analyzer, x-ray diffraction, rheometer, differential thermal analysis, and thermogravimetry, respectively. The mean particle size of the nano-TiO 2 concentrated dispersion was 72 nm with an especially narrow distribution, and near to monodispersion. The viscosity of 55 wt% nano-TiO 2 dispersion is 30 mPa Á s at 344 s À1 . The dried dispersion composition made from the nano-TiO 2 and the hyperdispersant has good thermal stability.

Effect of Colloidal Dispersion of Clay on Some Properties of Wool Fiber

“…Other authors have confirmed this phenomenon in cases where nanoparticles were incorporated into multilayer organic coatings. [52][53][54][55] FIG. 5.…”

Acetylated Distarch Phosphate/Chitosan Films Reinforced with Sodium Laurate‐Modified Nano‐TiO2: Effects of Sodium Laurate Concentration

“…The XRD profiles of all the TiO 2 ‐SLx samples were very similar to that of unmodified nano‐TiO 2 . Together with the FTIR data, it could be inferred that the anionic surfactant SL reacts only with the hydroxyl groups on the surface of nano‐TiO 2 , and the crystalline phase does not change during the modification process (Liu et al., ).…”

“…Furthermore, TiO 2 has long‐lasting broad‐spectrum bacteriostasis properties, which can effectively increase the shelf life of fruits and meat products (Alizadeh Sani, Ehsani, & Hashemi, ; Jiang, Huang, Yu, Sun, & Cui, ). However, TiO 2 nanoparticles easily aggregate into micron‐sized particles (Liu, Han, & Ke, ), thus exhibiting poor compatibility with many materials and even causing phase separation. This greatly limits the practical application of TiO 2 nanoparticles.…”