摘要
应用KSVLB - 50 0 0型Langmuir膜天平的VISCOS模式 ,对硬脂酸和 19,2 1-二炔廿二碳酸 (DDA)单分子膜在有无亚相离子、不同目标膜压、不同膜障振动频率和不同温度下的动态稳定性作了研究。实验表明 ,单分子膜的目标膜压越低 ,膜障交变振动的频率越低 ,单分子膜越稳定 ,亚相中加有金属正离子对单分子膜的动态稳定性也有利。
The dynamic stability of Langmuir monolayers of stearic acid and 19,21- docosadiynoic acid (DDA) on different subphases at different surface pressure, oscillating frequency or temperature was instigated respectively by applying the VISCOS model on KSV LB-5000 Langmuir balance. It was showed that the lower the surface pressure or the oscillating frequency was, the more stable the monolayer was. Adding some metal ion into the subphase could also strengthen the stability of the monlayer.
基金
国家自然科学基金资助项目 ( 2 9974 0 2 8)&&
