Description of the publication:

Authors:

Zaręba–GrodĽ, I., Mi¶ta, W., Sikora, A., Gotszalk, T., Str±k, W., Hermanoicz, K., Maruszewski, K.

Title:

Textural properties of silica–based organic–inorganic polymer hybrid xerogels

Journal:

Materials Science– Poland

Year:

2005

Vol:

23 (1)

Pages:

147–158

ISSN/ISBN:

01371339

DOI:

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Link:

http://materialsscience.pwr.wroc.pl/index.php?id=5&vol=vol23no1&abst=20

Keywords:

Organic–inorganic polymer hybrid materials; Organically modified silicates; Photo–polymerisation; Porosity; Roughness; Sol–gel process

Abstract:

Samples of xerogels containing organic polymers were prepared by the sol–gel method via the reaction of tetraethoxysilane (TEOS) and organic monomers with an acidic catalyst. These materials were obtained as transparent and homogeneous bulk materials. The samples were characterized by Raman and IR spectroscopies, N2–adsorption (77 K), and atomic force microscopy (AFM). Specific surface areas and porosities of the samples were estimated from nitrogen adsorption–desorption isotherms at 77 K. Textural properties such as specific surface areas (SBET), Pore volume (Vp). average pore sizes (Rp), and micropore volume (FDA) were obtained. The complete adsorption–desorption isotherms and pore size distributions were analysed following the Dollimore–Heal method. Atomic force microscopy was used to investigate the morphology and roughness of the samples.

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Example figure:

3D topography view of the polymer hybrid xerogel.