Effect of water content on structural and phase behavior of water-in-oil (n-decane) microemulsion system stabilized by mixed nonionic surfactants SPAN 80/TWEEN 80

被引:43
作者
Koneva, A. S. [1 ]
Safonova, E. A. [1 ]
Kondrakhina, P. S. [1 ]
Vovk, M. A. [2 ]
Lezov, A. A. [3 ]
Chernyshev, Yu. S. [3 ]
Smirnova, N. A. [1 ]
机构
[1] St Petersburg State Univ, Inst Chem, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia
[2] St Petersburg State Univ, Ctr Magnet Resonance, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia
[3] St Petersburg State Univ, Fac Phys, 7-9 Univ Skaya Nab, St Petersburg 199034, Russia
基金
俄罗斯科学基金会;
关键词
Food-grade microemulsions; Phase behaviour; Mixed surfactant systems; Diffusion coefficients; W/O NANO-EMULSIONS; REVERSE MICELLES; TRANSDERMAL DELIVERY; MOLECULAR-DYNAMICS; SELF-DIFFUSION; NMR; SOLUBILIZATION; SIZE; TEMPERATURE; TRANSFORMATIONS;
D O I
10.1016/j.colsurfa.2017.01.020
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
For the search of effective microemulsion systems with the properties demanded for various applications the knowledge of structural properties of the reverse microemulsions for various compositions and temperatures is of high value. In the present study, the microstructure and diffusion of the components of water-in-n-decane Winsor IV microemulsions stabilized by a mixture of nonionic surfactants Span 80 (sorbitane monooleate, HLB 4.9) and Tween 80 (polyoxyethylene sorbitan monooleate, HLB 15.0) at the weight ratios 49:51 (i.e. at the maximal ability to solubilize water) were investigated by viscosimetry, PGSTE NMR and DLS. The system phase diagram obtained at 298.2 K includes the intermediate heterogeneous region between the reverse micelles region and the microemulsions. The water-to-surfactant molar ratio was changed up to 15.5 (13 wt.% of water) at the weight ratios n-decane: surfactants 65:35 and 85:15. The microemulsion droplets are spherical (that is corresponded also to the cryo-TEM data) and grow with the increase of water content. The temperature effect on the aggregates diffusion (and on the aggregates size) in the range 298.2-318.2 K is not pronounced. The bimodal distributions of the diffusion coefficients determined using both DLS and PGSTE NMR methods are specific for the system. The slower diffusion mode relates to the diffusion of mixed microemulsion droplets with the radii Rh similar to 10-20 nm. The second stable form of nanoaggregates are "dry" micelles with Rh similar to 1-2 nm. The data on the diffusion coefficients are of special interest in particular for the molecular dynamic simulation of the reverse micelles or of the microemulsion droplets.
引用
收藏
页码:273 / 282
页数:10
相关论文
共 50 条
[1]   Phase behavior, topology, and growth of neutral catanionic reverse micelles [J].
Abecassis, Benjamin ;
Testard, Fabienne ;
Arleth, Lise ;
Hansen, Steen ;
Grillo, Isabelle ;
Zemb, Thomas .
LANGMUIR, 2006, 22 (19) :8017-8028
[2]   Micelle structure and molecular self-diffusion in isononylphenol ethoxylate-water systems [J].
Arkhipov, Victor P. ;
Potapova, Elisaveta F. ;
Antzutkin, Oleg N. ;
Filippov, Andrei V. .
MAGNETIC RESONANCE IN CHEMISTRY, 2013, 51 (07) :424-430
[3]  
Arkhipov VP, 2000, COLLOID J+, V62, P407
[4]   Inverse Nonionic Microemulsion Studied by Means of 1H, 13C, and PGSTE NMR during Silica Nanoparticle Synthesis [J].
Asaro, Fioretta ;
Benedetti, Alvise ;
Savko, Nina ;
Pellizer, Giorgio .
LANGMUIR, 2009, 25 (05) :3224-3231
[5]  
AVEYARD R, 1992, J CHEM TECHNOL BIOT, V54, P231
[6]   Temperature structural transformations of reverse micelles of oxyethylated surfactants [J].
Bulavchenko, A. I. ;
Podlipskaya, T. Yu. ;
Arymbaeva, A. T. ;
Demidova, M. G. .
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A, 2011, 85 (05) :866-870
[7]  
Callaghan Paul T., 1993, Principles of Nuclear Magnetic Resonance Microscopy
[8]   Formulation and characterization of food-grade microemulsions as carriers of natural phenolic antioxidants [J].
Chatzidaki, Maria D. ;
Mitsou, Evgenia ;
Yaghmur, Anan ;
Xenakis, Aristotelis ;
Papadimitriou, Vassiliki .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2015, 483 :130-136
[9]   A new method of extraction of amoxicillin using mixed reverse micelles [J].
Chuo, Sing C. ;
Mohd-Setapar, Siti H. ;
Mohamad-Aziz, Siti N. ;
Starov, Victor M. .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2014, 460 :137-144
[10]  
Dantas TND, 2001, FUEL, V80, P75