Effects of addition of potassium chloride and ethylene glycol on nanofluidic behaviors

摘要

Infiltration and defiltration behaviors of liquids modified by potassium chloride and ethylene glycol in a nanoporous silica are investigated through a high-pressure experiment. At the first loading, infiltration can always take place quite smoothly no matter how viscous the liquid is. The infiltration pressure can be well described by linear superposition of the contributions of liquid components. At the second loading, however, only the potassium chloride modified system exhibits a considerable compressibility, suggesting that the effects of the two admixtures on defiltration are different. The irreversibility of the liquid motion may be attributed to the unique liquid structures in nanoenvironment.