Tissue conditionerの流動性に関する研究

抄録

The tissue conditioner changes in its viscoelastic properties with time lapse after mixing. The purpose of this study was to investigate the flow of six commercial tissue conditioners (Coe-comfort, Hydro-cast, Shofu tissue conditioner, Soft-liner, Softone, Visco-gel) at 22±1°C by the parallel plate viscometer. The viscometer is to measure the spread radius of samples (a volume of 0.5cm³) between two parallel flat plates loaded by 1 kgf weight at 1, 10, 60, 100 seconds after loading had begun. Two types of measurements were taken. The first measurement consisted of mixing powder and liquid according to the manufacture's recommendations, loading the sample on the viscometer, and measurements taken at 3, 5, 7 minutes after mixing had begun. The second measurement consisted of mixing powder and liquid in three varieties of powder-liquid ratios, loading the sample on the viscometer, and measurements taken at 3 minutes after mixing had begun.
The findings were as follows;
1. Mixing powder and liquid according to the manufacture's recommendations, the spread radius decreased at 3 minutes in the following order: Hydro-cast, Shofu tissue conditioner, Viscogel, Coe-comfort, Soft-liner and Softone. The spread radius decreased at 5, 7 minutes in the following order: Hydro-cast, Visco-gel, Coe-comfort, Shofu tissue conditioner, Soft-liner and Softone.
2. As the powder-liquid ratio increased, all materials were more viscous. As the powderliquid ratio decreased, all materials were more fluid.