# Preparation and characterization of an aromatic imidefunctionalized polysilsesquioxane via the sol-gel route

> Title: Preparation and characterization of an aromatic imidefunctionalized polysilsesquioxane via the sol-gel route Page Range: p.621-626 Author(s): Schramm C; Rinderer B; Tessadri R Click Here to Download Now! - File size: (subscribers only) Journal: Polymers and Polymer Composites Issue Year: ppc Volume:...

Canonical URL: https://polymerjournals.com/preparation-and-characterization-of-an-aromatic-imidefunctionalized-polysilsesquioxane-via-the-sol-gel-route/
Published: 2015-09-01T00:00:00+00:00
Categories: Polymers and Polymer Composites

**Title: Preparation and characterization of an aromatic imidefunctionalized polysilsesquioxane via the sol-gel route**
 ![](http://ppc.jpg)Page Range: p.621-626
 Author(s): Schramm C; Rinderer B; Tessadri R
 ![](http://dload.gif)Click Here to Download Now! - File size: (subscribers only)![](http://pdf.gif)
 Journal: Polymers and Polymer Composites
 Issue Year: ppc
 Volume: 23
 Issue No: No.9

**Abstract**
 Phthalic acid (benzene-1,2-dicarboxylic acid, PA) and trimesic acid (benzene-1,3,5-tricarboxylic acid, TA) have been reacted with 3-aminopropyltriethoxysilane (APTES) at 110 deg C and 220 deg C (molar ratios 1:1 and 1:2). The reaction at 110 deg C resulted in the formation of the corresponding poly(amic acid), whereas the thermal imidisation at 220 deg C gives rise to the formation of a cyclic polyimide moiety as shown by means of Fourier transform infrared spectroscopy (FT-IR). X-ray powder diffraction (XRPD) measurements revealed that a specific periodic arrangement in the as-prepared materials had been formed. Thermogravimetric analysis (TGA) made evident that the organic-inorganic nanocomposite materials showed improved thermal properties. The reaction of PA with APTES (1:1) at 220 deg C is assumed to yield a ladder-like polysilsesquioxane. 25 Refs.