Study of lecithin reverse micelles by FT-IR spectroscopy

被引:9
作者
Arcoleo, V [1 ]
Goffredi, M [1 ]
LaManna, G [1 ]
Liveri, VT [1 ]
Aliotta, F [1 ]
机构
[1] UNIV PALERMO,DEPT PHYS CHEM,I-90123 PALERMO,ITALY
来源
TRENDS IN COLLOID AND INTERFACE SCIENCE XI | 1997年 / 105卷
关键词
lecithin; giant micelles; organogels; FT-IR spectroscopy;
D O I
10.1007/BF01188954
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
FT-IR spectra of water/lecithin/deuterated cyclohexane microemulsions as a function of water/lecithin molar ratio R (R = [water]/[lecithin]) at various lecithin volume fractions (phi) have been recorded. After elimination of the spectral contributions due to the deuterated cyclohexane and normalization, the band parameters of the CO and PO4 vibrational modes due to lecithin have been found dependent only upon R. This behaviour has been interpreted in terms of a progressive structural modification of the water/lecithin interface superimposed to the progressive hydration of CO and PO4 groups. Moreover, no correlation between the CO and PO4 band parameters and the formation of gel-like micellar solutions has been found. This and other spectral features allow us to raise some doubts on the current structural picture of gel-like micellar solutions.
引用
收藏
页码:220 / 223
页数:4
相关论文
共 15 条
[1]  
Scartazzini R., Luisi P.L., J Phys Chem, 92, pp. 829-833, (1988)
[2]  
Luisi P.L., Scartazzini R., Haering G., Schurtenberger P., Colloid Polym Sci, 268, pp. 356-374, (1990)
[3]  
Schurtenberger P., Peng Q., Leser M.E., Luisi P., Colloid Interface Sci, 156, pp. 43-51, (1993)
[4]  
Aliotta F., Fontanella M.E., Sacchi M., Vasi C., La Manna G., Turco Liveri V., Colloid Polym Sci, 274, pp. 1-10, (1996)
[5]  
Cavallaro G., La Manna G., Turco Liveri V., Aliotta F., Fontanella M.E., J Colloid Interface Sci, 176, pp. 281-285, (1995)
[6]  
Baer E., J Am Chem Soc, 75, pp. 621-623, (1953)
[7]  
Parker F.S., Applications of Infrared Spectroscopy, pp. 145-164, (1971)
[8]  
Levin I.W., Advances in Infrared and Raman Spectroscopy, pp. 1-48, (1984)
[9]  
Aliotta F., Fontanella M.E., Squadrito G., Migliardo P., La Manna G., Turco Liveri V., J Phys Chem, 97, pp. 6541-6545, (1993)
[10]  
Lamba P., Borchman D., O'Brien P.J., Biochemistry, 33, pp. 1704-1712, (1994)