A silicone-containing polymer was synthesized by addition polymerization between 1,12-bis(3-methyl-3-oxetanyl)-2,5,8,11-tetraoxadodecane and dichloride dimethylsdane catalyzed by tetrabutylammonium bromide and was characterized by Fourier transform infrared spectroscopy, H-1-NMR, gel permeation chromatography, and differential scanning calorimetry analyses. To manufacture a tough solid electrolyte membrane, various amounts of a poly(vinylidene fluoride-co-hexafluoropropene) copolymer was used to reinforce this silicone-containing polymer. The mechanical properties and compatibility of the resulting membranes were assessed by mechanical testing and scanning electron microscopy observation. The ionic conductivity was assayed from an alternating-current impedance spectrum. The results reveal that the maximum ionic conductivity reached 7.4 x 10(-5) S/cm at 30 degrees C and 2.6 x 10(-4) S/cm at 80 degrees C, respectively. Additionally, the linear sweep voltammetry tests showed that this kind of the blended polymer electrolyte was electrochemical stable until 4.3 V. The thermogravimetric analysis measurements also implied its good thermal stability. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 114:1086-1093, 2009