Preparation of silica-containing poly (ether imide)s PI-0, PI-10, PI-20, and PI-30.

The thermal properties of samples PI-0, PI-10, PI-20, and PI-30.

Figure 5a and b illustrates E' and tan [delta]) versus temperature, respectively, for the samples PI-0, PI-10, PI-20, and Pl-30.

The main parameters of DMA analyses for samples PI-0, PI-10, PI-20, and PI-30.

Figure 8 presents the dependence of real and imaginary parts of complex permittivity on frequency, for samples PI-0, PI-10, PI-20, and PI-30, at three chosen temperatures, in the second scan of measurements.

Dielectric constant at selected frequency, at 20[degrees]C, and activation energies of relaxation phenomena for samples PI-0, PI-10, PI-20, and PI-30 for First and Second scans.

Preparation of polyimide PI-0 and hybrid polyimides PI-10, PI-20, and PI-40.

PI-10: FT-IR ([cm.sup.-1]): 3478, 1776, 1716, 1591, 1505, 1371, 1262, 744.

Values obtained for advancing and receding contact angles with water for the samples PI-0, PI-10, PI-20, and PI-40 are presented in Table 2.

Water dynamic contact angles ([degrees]) Sample [[theta].sub.a] (a) [[theta].sub.r] (b) H (c) PI-0 82.86 34.13 48.74 PI-10 85.57 39.55 46.02 PI-20 86.99 49.64 37.35 PI-40 88.79 44.22 44.57 (a) Maximum advancing contact angle value, determined as average of the three measurements.

Sample Weight change, % (Total water adsorption at RH = 90%, T = 25[degrees]C) PI-0 1.97 PI-10 1.94 PI-20 1.80 PI-40 1.82 Thermal Characterization of Hybrid Polyimide Films

The thermal properties for samples PI-0, PI-10, PI-20, and PI-40.