Abstract
Ormosils are well-known organic-inorganic sol-gel derived materials also called heteropolysiloxanes. This paper presents two basic heteropolysiloxane structures where the organic part is either a short organic chain bridging two silicon atoms for the first material or an organic polymer backbone for the second. Their synthesis is detailed and a variety of experimental techniques (IR, 13C and 29Si NMR and CP-MAS NMR, GPC) have been employed to investigate the chemical structure of these new materials. Their mechanical properties, more precisely their viscoelastic behaviour, have been evaluated using dynamic rheological techniques. The storage and loss moduli have been followed during the sol-gel transition at fixed and variable oscillation frequencies. The results have been correlated to the 29Si CP-MAS NMR informations concerning the network polycondensation and compared to a pure inorganic sol-gel material prepared from tetraethoxysilane.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
S.A. Khan, R.K. Prud'Homme, E.M. Rabinovich, and M.J. Sammon, J. Non-Cryst. Solids, 110, 153 (1989).
J.C. Ro and I.J. Chung, J. Non-Cryst. Solids, 126, 259 (1990).
J.K. Bailey, T. Nagase, S.M. Broberg, and M.L. Mecartney, J. Non-Cryst. Solids, 109, 198 (1989).
A.H. Boonstra, T.P.M. Meeuwsen, J.M.E. Baken, and G.V.A. Aben, J. Non-Cryst. Solids, 109, 153 (1989).
M. Djabourov, Polymer International, 25, 135 (1991).
H.H. Winter, Master. Res. Soc. Bull., XVI-8, 44 (1991).
M. Adam, M. Delsanti, J.P. Munch, and D. Durand, Physical Review Letters, 61–6, 706 (1988).
C.J. Brinker and G.W. Scherer, Sol-Gel Science: The Physics and Chemistry of Sol-Gel Processing (Academic Press, San Diego, 1990), p. 303.
D.F. Hodgson and E.J. Amis, Physical Review A, 41–2, 1182 (1990).
L. Matejka, Polymer Bulletin, 26, 109 (1991).
R. Muller, E. Gerard, P. Dugand, P. Rempp, and Y. Gnagnou, Macromolecules, 24, 1321 (1991).
Y.G. Lin, D.T. Mallin, J.C.W. Chien, and H.H. Winter, Macromolecules, 24, 850 (1991).
D.F. Hodgson and E.J. Amis, Macromolecules, 23, 2512 (1990).
R. Winter, D.W. Hua, X. Song, W. Mantulin, and J. Jonas, J. Phys. Chem., 94, 2706 (1990).
P.R. Soskey, R.E. Nikles, D.A. Gerenza, T. Fech, and T.M. Che, in Chemical Processing of Advanced Materials, edited by L.L. Hench and J.K. West (J. Willey and Sons, New York, 1992), p. 51.
C. Guizard, J.C. Achddou, A. Larbot, and L. Cot, J. Non-Cryst. Solids, 147–148, 681 (1992).
J.P. Kintzinger and H. Marsmann, in Oxygen-17 and Silicon-29 NMR Basic Principles and Progress Vol. 17, edited by P. Diehl, E. Fluck, and R. Kosfeld (Springer-Verlag, Berlin-Heidelberg-New York, 1981), p. 65.
C. Guizard, N. Ajaka, M.P. Besland, A. Larbot, and L. Cot, in Polymides and other High-Temperature Polymers, edited by M.J.M. Abadie and B. Sillion (Elsevier Publishers B.V., Amsterdam, 1991), p. 537.
P. Lacan, P. Le Gall, J. Rigola, C. Lurin, D. Wettling, C. Guizard, and L. Cot, in Sol-Gel Optics II Proc. SPIE 1758, edited by J.D. Mackenzie (SPIE, Bellingham, 1992), p. 464.
C. Guizard, P. Lacan, J.M. Saurel, F. Hajoub, and L. Cot, in Mat. Res. Soc. Symp. Proc. Vol. 271, edited by M.J. Hampden-Smith, W.G. Klemperer and C.J. Brinker (Materials Research Society, Pittsburg, 1992), p. 687.
M.D. Sacks and R.S. Sheu, J. Non-Cryst. Solids, 92, 383 (1987).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Lacan, P., Guizard, C. & Cot, L. Chemical and rheological investigations of the sol-gel transition in organically-modified siloxanes. J Sol-Gel Sci Technol 4, 151–162 (1995). https://doi.org/10.1007/BF00491681
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00491681