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The effect of different cross-linking agents on the properties of hybrid films

V. PURCAR1,* , D. DONESCU1, M. GHIUREA1, S. SERBAN1, C. PETCU1, T. PAGNIER2, C. PODINA3

Affiliation

  1. National Institute for Chemistry and Petrochemistry ICECHIM- Polymer Department,Splaiul Independentei 202-6, PO Box 174/35 Bucharest, Romania
  2. Grenoble Institute of Technology (INPG), 46, Avenue Felix Viallet 38031 Grenoble, France
  3. University of Bucharest, Bld. Regina Elisabeta 4-12, Bucharest, Romania

Abstract

Organic-inorganic hybrid films were prepared by sol-gel method, using different alkoxysilanes. All formulations were enriched with tetraisopropyl orthotitanate (TIP) or aluminium sec-butoxide (ASB), used as cross-linking agent. Thermal stabilities of the final hybrid films were evaluated and it was observed that the films with ASB, present a temperatures at which the maximum degradation rate (TVmax) is much lower than films with TIP. This effect is probably due to the presence of AlOH groups, which can play a role of catalyst over organic chains degradation.

Keywords

Sol-gel process, Hybrid films, Cross-linking agents.

Citation

V. PURCAR, D. DONESCU, M. GHIUREA, S. SERBAN, C. PETCU, T. PAGNIER, C. PODINA, The effect of different cross-linking agents on the properties of hybrid films, Optoelectronics and Advanced Materials - Rapid Communications, 3, 3, March 2009, pp.204-208 (2009).

Submitted at: Jan. 25, 2009

Accepted at: March 19, 2009