Macromolecular Research

The Polymer Society of Korea (한국고분자학회)
권호 표지

Rheology of Decamethylceclopentasiloxane (cyclomethicone) W/O Emulsion System

  • Choi, Min-Hyung (Department of Chemical Engineering, Inha University) ;
  • Jeong, So-Ra (Department of Chemical Engineering, Inha University) ;
  • Nam, Sang-In (Department of Chemical Engineering, Inha University) ;
  • Shim, Sang-Eun (Department of Chemical Engineering, Inha University) ;
  • Chang, Yoon-Ho (Department of Chemical Engineering, Inha University)
  • Published : 2009.12.25
Download PDF
⟨ Previous Next ⟩

Abstract

A highly dispersed W/O emulsion of silicone oil (cyclomethicone)/water system was prepared with a nonionic surfactant. The surface and interfacial tension between the oil and water were characterized in terms of the droplet size distribution and viscosity change of the emulsion. When the dispersed phase concentration was relatively high, the viscosity of the emulsion was rapidly increased and the droplet size of the emulsion was decreased. The rheological behavior of the emulsion system showed non-Newtonian and shear thinning phenomena depending upon the content of the dispersed phase. The droplet size of the emulsion was decreased with increasing surfactant content and water concentration. The relative viscosity of the emulsion was better predicted with the Choi-Schowalter model than with the Taylor model. The value of the complex modulus increased with increasing surfactant concentration. The linear viscoelastic region was expanded with a dispersed phase concentration. According to the change in the viscosity, the behavior was classified into three distinct regions: [I] linear viscoelastic, [II] partially viscoelastic, and [III] viscous. The creep/recovery behaviors in each region were characterized.

Keywords

References

  1. S. J. Clarson, Science and technology of silicones and silicone-modified materials, Oxford University Press, London, 2007
  2. S. M. Lee, D. C. Shim, and J. W. Lee, Macromol. Res., 16, 6 (2008) https://doi.org/10.1007/BF03218954
  3. H. A. Barnes, Colloid Surf. A, 91, 89 (1994) https://doi.org/10.1016/0927-7757(93)02719-U
  4. Th. F. Tadros, Colloid Surf. A, 91, 39 (1994) https://doi.org/10.1016/0927-7757(93)02709-N
  5. C. I. Zoldesi, P. Steegstra, and A. Imhof, J. Colloid Interf. Sci., 308, 121 (2007) https://doi.org/10.1016/j.jcis.2006.12.072
  6. B. Neumann, B. Vincent, R. Krustev, and H. J. Mueller, Langmuir, 20, 4336 (2004) https://doi.org/10.1021/la035517d
  7. R. U. Wahl, J. R. Nicholson, and J. L. Kerschner, Silicones in personal care applications, ACS Symposium Series, New York, 2007
  8. D. Y. Kim and W. S. Shin, Macromol. Res., 17, 128 (2009) https://doi.org/10.1007/BF03218666
  9. A. S. Patole, S. P. Patole, M. H. Song, Y. J. Yoon, J. Kim, and T. H. Kim, Elastom. Compos., 44, 34 (2009)
  10. M. Mill, Silicone surfactants, Marcel Dekker, New York, 1999
  11. Z. L. Peng, Q. Wu, Y. L. Wang, and S. T. Yang, J. Surf. Deterg., 7, 277 (2004) https://doi.org/10.1007/s11743-004-0312-z
  12. E. Hatschek, Foundation of colloid chemistry, London, 1925
  13. R. B. Dean, Modern colloid, Van Nostrand Reinhold, New York, 1948
  14. J. H. Schulman, W. Stoeckenius, and L. M. Prince, J. Phys. Chem., 63, 1977 (1959) https://doi.org/10.1021/j150581a047
  15. R. Pal, in Encyclopedia of Emulsion Technology, P. Becher, Ed., Dekker, New York, 1996, Vol. 4
  16. J. Robert, D. Stokes, and E. Fennell, Fundamentals of interfacial engineering, Wiley-VCh, Inc., U.S.A, 1997, p 212
  17. Y. Chen and H. Conrad, ASME FED., 249, 105 (1999)
  18. K. Shinoda, H. Saito, and H. Arai, J. Colloid Interface Sci., 35, 624 (1971) https://doi.org/10.1016/0021-9797(71)90220-7
  19. G. M. Eccleston, J. Soc. Cosmet. Chem., 41, 1 (1990)
  20. J. C. Hyun, Rheology and Its Applications, The Korean Society of Rheology, Korea, 2001
  21. G. I. Taylor, Proc. R. Soc. A, 138, 41 (1932) https://doi.org/10.1098/rspa.1932.0169
  22. S. J. Choi and W. R. Schowalter, Phys. Fluids, 18, 420 (1975) https://doi.org/10.1063/1.861167