Study on Water Evaporation Retardants with Abilities of Anti-environmental Interference

In order to investigate abilities of anti-environmental interference of water evaporation retardants, a new kind of water evaporation retardants composed of 1-hexadecanol and nonionic surfactants was prepared in this paper, and effects of environmental factors on retardation of water evaporation of mixed monolayers were studied. The results showed that in comparison with monolayers of single component, mixed monolayers not only had a considerably better effect on retardation of water evaporation, but also had anti-environmental interference abilities, better automatic restoration capacities and fewer defects. During the temperature range of (25~40)degC, the percentage resistance(X) of mixed monolayers could still remain about 90% after 30 days using the tap water as subphase. Furthermore, mixed insoluble monolayers did not hinder the exchange of oxygen between the air and water interface.