The Structural Parameters of P507(K)-alcohol-heptane-water Microemulsions
Shen Xinghai; Wang Wenqing Wang Shuang; Li Geiling; Gao Hongcheng (Department of Technical Physics, Peking University Beijing 100871)
The structural parameters of microemulstions composed of P507(K)-alcohol(pentanol, hexanol, iso-pentanol, 2-ethyl butanol-1) were calculated based on sphere model and dilution method. The structural parameters include irmer water radius Rw, effective radius of particle Re, length of interface l, average aggergation number n, total number of particles Nd and total interfacial area of dispersed phase Ad. The results show that Rw has linear relationship with ω (the molax ratio of water to surfactant).According to the intercept, the water solvation thickness of the polar head of P57(K) wascalculated to be about 5.8A. The maximum unmbers of water molecules associating with K+ in pentanol、 hexanol、 isopentanol and 2-ethyl butanol-1 containing microemulstions were estimated to be about 5.83 、5.31、 4.95 and 4.28, respectively.
【CateGory Index】： O642