高級アルコールで安定化したO/Wエマルションの特殊なレオロジー的性質
1992 年 41 巻 2 号 p. 161-165
詳細
1992 年 41 巻 2 号 p. 161-165
The unique rheological property, rheopexy, of O/W emulsions stabilized with fatty alcohol was investigated.
A cone-and-plate viscometer, differential scanning calorimeter (DSC) and optical microscope were used to characterize the O/W emulsions.
Flow curves of each emulsion sample were obtained using a cone-and-plate viscometer. Flow hysteresis curves for the emulsions could be distinguished on the basis of the four following patterns : (1) no hysteresis, (2) rheopexy, (3) mixed patterns of rheopexy and thixotropy, and (4) thixotropy. The flow curve of each emulsion showed transition from pattern (1) to (4) with increase in the fatty alcohol/surface active agent ratio.
