牛乳カゼインの酸化チタンによる表面改質および混合の改良

Abstract

With the use of a newly developed air-type surface treatment and blending system, milk casein particles were surface-treated, blended and matured with titanium oxide. The physical properties such as whiteness, compression strenght and dyeability of the resulting product were carefully evaluated from the point of view of future practical applications as a fibrous composite material. It was found that the new treatment/blending system could solve the problem of the thermal deterioration of milk casein which was caused by the sliding heat generated during blending and the heat generated during maturing in a container in a conventional mechanical treatment/blending system. Intimate treatment and blending with titanium oxide could produce fine tissures with a 4.4% or so rise in compressive yield strenght. In this way, a reliable manufacturing method was established in order to produce high-performance fibrous composite material from milk casein and a correlation was obtained between the process conditions, on one hand and the varying properties of treated powder and resulting material, on the other.Furthermore, a simulation of particle behavior in the air blending field was analyzed to compare with and study the blending behavior of the actual system through high-speed image processing as well as fluorescent X-ray analysis. It was confirmed that the simulation analysis results and the actual behavior study results match each other well. This study will help in the application of simulation microanalysis to material and system design.