STRUCTURE AND PROPERTIES OF THE DISPERSIONS OF SILICA IN POLYETHYLENE GLYCOL-400
Abstract
The possibility of hydrogen bond formation between the silanol group and the oxygen atom of the ether group or the terminal hydroxyl group of polyethylene glycol (Mn = 400 g · mol–1, PEG-400) in the silica (aerosil) dispersions in PEG-400 was proved by quantum chemical simulation and IR-spectroscopy. The silica dispersions in PEG-400 over the concentration range of 0.5–3 % were found to be sols, but with increasing the silica concentration the sol–gel transition was shown to occur that yields different thermocoagulation stability of the dispersions depending on the silica concentration.
About the Authors
T. V. PLISKO
Институт физико-органической химии НАН Беларуси, Минск
Belarus
Belarus
A. V. BILDYUKEVICH
Институт физико-органической химии НАН Беларуси, Минск
Belarus
Belarus
V. M. ZELENKOVSKY
Институт физико-органической химии НАН Беларуси, Минск
Belarus
Belarus
References
1. Raghavan S. R. et al. // Langmuir. 2000. Vol. 16. P. 7920–7930.
2. Jun Hou et al. // Langmuir. 2000. Vol. 16. P. 1066–1077.
3. Walls H. J. et al. // J. of Power Sources. 2000. Vol. 89. P. 156–162.
4. Zheng Q.-Zh., Wang P., Yang Y.-N. // J. Memb. Sci. 2006. Vol. 279. P. 230–237.
5. Kawaguchi M., Yamamoto T., Kato T. // J. Colloid Interface Sci. 2001. Vol. 241. P. 293–295.
6. Voronin E. F. et al. // J. Colloid Interface Sci. 2004. Vol. 279. P. 326–340.
7. Esumi K., Iitaka M., Koide Y. // J. Colloid Interface Sci. 1998. Vol. 208. P. 178–182.
8. Wisniewska M., Szewczuk-Karpisz K., Ostolska I. // Fluid Phase Equilibria. 2013. Vol. 360. P. 10–15.
9. Khavryuchenko D., Sheka E. F. // J. of Structural Chemistry. 1994. Vol. 35, N 3. P. 291–298.
10. Schmidt M. W. et al. // J. Comp. Chem. 1993. Vol. 14. P. 1347–1363.
11. Немухин А. В., Григоренко Б. Л., Грановский А. А. // Вестн. Моск. гос. ун-та. Химия. 2004. Т. 45. С. 75–102.
12. Suenaga M. // J. of Computer Chemistry, Japan. 2005. Vol. 4, N 1. P. 25–32.
13. Suenaga M. // J. of Computer Chemistry, Japan. 2008. Vol. 7, N 1. P. 33–53.
Review
Views: 937
Email this article 