The role of Zirconium as thermal stabilizer of PDMS-TEOS hybrids

abstract

Hybrid materials were prepared by sol-gel method using Tetraethylortosilicate and Polydimethylsiloxane silanol terminated with the addition of small contents of Zirconium Propoxide a parts per thousand currency sign5 wt%. The thermal stability of the prepared samples was studied by Infra-red spectroscopy, (29)Si Nuclear Magnetic Resonance, Thermal Analysis and Scanning Electron Microscopy. All samples were monolithic after drying at 120 A degrees C. After heat treatment at 400 A degrees C the samples prepared with 0 wt% in Zirconium Propoxide present high porosity. It was found that the content in Zirconium Propoxide is directly related with the thermal stability of the hybrid materials prepared in this study.

keywords

SOL-GEL; ORMOSILS

subject category

Thermodynamics; Chemistry

authors

Marques, MMP; Salvado, IMM; Margaca, FMA; Ferreira, LM

our authors

Share this project:

Related Publications

We use cookies for marketing activities and to offer you a better experience. By clicking “Accept Cookies” you agree with our cookie policy. Read about how we use cookies by clicking "Privacy and Cookie Policy".