Abstract
Dynamic and static light scattering techniques were used to study the droplet size and the interdroplet interaction of w/o microemulsions consisting of cetyltrimethyl-ammonium bromide (CTAB), hexyl carbitol, toluene, water and poly(ethylene glycol). The results were analyzed in terms of a hard-sphere model with a perturbation. For the microemulsions without polymer, their droplet sizes increased only slightly (R=10.1 to 11.0 nm) and the perturbation became more attractive as the molar ratio of H2O/CTAB was raised from 50 to 82. In contrast, an increase in polymer concentration or polymer molecular weight not only increased the droplet sizes but also changed the perturbation to become more repulsive. In addition, it is envisaged that the interactions between the cationic groups of CTAB and the ether linkages of the poly(ethylene glycol) may also enhance the rigidity of the interfaces, hence the stability of the microemulsions.
Similar content being viewed by others
References
Cazabat AM, Chatenay D, Guering P, Langevin D, Meunier J, Sorba O (1984) In: Luisi PL, Straub BE (eds) Reverse Micelles. New York, p 21
Schulman JH, Friend JA (1949) J Colloid Interface Sci 4:497
Eicke HF, Shepherd JCW, Steinman A (1976) J Colloid Interface Sci 56:168
Scriven LE (1976) Nature 263:123
Friberg S, Lapczynska I, Gillberg G (1976) J Colloid Interface Sci 56:19
Cazabat AM, Langevin D (1981) J Chem Phys 74(6):3148
Brunetti S, Roux D, Bellocq AM, Fourche G, Bothorel P (1983) J Phys Chem 87:1028
Roux D, Bellocq AM, Bothorel P (1984) In: Mittal KL, Lindman B (eds) Surfactants in Solution. Plenum, New York, Vol 3, p 1843
Hou MJ, Kim M, Shah DO (1988) J Colloid Interface Sci 123:398
Nicholson JD, Clarke JHR (1984) In: Mittal KL, Lindman B (eds) Surfactants in Solution. Plenum, New York, Vol 3, p 1663
Bedwell B, Gulari E (1984) J Colloid Interface Sci 102:88
Gulari E, Bedwell B, Alkhafajis (1980) J Colloid Interface Sci 77:202
Cazabat AM, Langevin D, Pouchelon A (1980) J Colloid Interface Sci 73:1
Calje AA, Agterof WGM, Vrij A (1977) In: Mittal KL (ed) Micellization, Solubilization and Microemulsions. Plenum, New York, Vol 2, p 779
Graciaa A, Lachaise J, Martinez A, Bourrel M, Chambu C (1976) CR Acad Sci Ser B282:547
Carnahan NF, Starling KE (1969) J Chem Phys 51:635
Feldherof BU (1978) J Phys A11:929
Cazabat AM (1983) J Physique-Lett 44:593
Dvolaitzky M, Guyot M, Lagues M, Le Pesant JP, Ober R, Sauterey C, Taupin C (1978) J Chem Phys 69:3279
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gan, L.M., Ng, S.C., Ong, S.P. et al. A light scattering study of the influence of poly(ethylene glycol) on the droplet size and the interdroplet interaction in a water-in-oil-microemulsion. Colloid & Polymer Sci 267, 1087–1095 (1989). https://doi.org/10.1007/BF01496928
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF01496928