Austin JC, Challis RE
School of Chemistry and Physics, Keele University, Keele, ST5 5BG, United Kingdom
J Colloid Interface Sci. 1999 Dec 1;220(1):6-12. doi: 10.1006/jcis.1999.6488.
Thefractal dimension of kaolin flocs suspended in water was increased by the addition of potassium chloride and indirectly monitored by low-power ultrasonic pulses in a test cell with a "pitch-catch" configuration. The results from these measurements were compared with fractal dimensions obtained from quasi-elastic light-scattering measurements in a kaolin suspension of a much lower solid volume fraction. Further comparison with a coupled phase theory of ultrasound propagation, utilizing measured slope viscosity and particle size distribution, revealed that the observed changes in the ultrasound signature were commensurate with changes in the fractal dimension observed by light scattering over a potassium chloride concentration range of approximately 0-1 mM. Copyright 1999 Academic Press.
通过添加氯化钾增加了悬浮在水中的高岭土絮体的分形维数，并在具有“收发”配置的测试池中通过低功率超声脉冲进行间接监测。将这些测量结果与在固体体积分数低得多的高岭土悬浮液中通过准弹性光散射测量获得的分形维数进行了比较。利用测得的斜率粘度和粒度分布，与超声传播的耦合相理论进行进一步比较，结果表明，在约0-1 mM的氯化钾浓度范围内，观察到的超声特征变化与光散射观察到的分形维数变化相当。版权所有1999年学术出版社。
