Preparation of Transparent PVC-Titanosilicate Nanocomposites by Interlamellar Silylation of Layered Titanosilicate

Abstract

The preparation and structural characterization of a transparent poly(vinyl chloride)-octyltriethoxysilane-Jilin Davy Faraday-Layered solid #1 nanocomposite is reported. H+-Jilin Davy Faraday-Layered solid #1 (H4Ti2Si8O22) was prepared by proton exchange of layered Na+-Jilin Davy Faraday-Layered solid #1 (Na4Ti2Si8O22). The octyltriethoxysilane-Jilin Davy Faraday-Layered solid #1, in a siloxane-pillared form, was obtained by hydrolysis of the H+-Jilin Davy Faraday-Layered solid #1-dodecylamine-octyltriethoxysilane in pure water. In addition, the poly(vinyl chloride)-octyltriethoxysilane-Jilin Davy Faraday-Layered #1, as an organic-inorganic nanocomposite, was prepared using a poly(vinyl chloride) resin and Na+-Jilin Davy Faraday-Layered solid #1, H+-Jilin Davy Faraday-Layered solid #1 or octyltriethoxysilane-Jilin Davy Faraday-Layered #1 in tetrahydrofuran. The prepared organic-inorganic nanocomposite, as an interlayer space expander, was confirmed by XRD, SEM, EDS, TGA and TEM. The poly(vinyl chloride)-octyltriethoxysilane-Jilin Davy Faraday-Layered #1 nanocomposite showed a larger interlayer distance (similar to 6.74 nm) than octyltriethoxysilane-Jilin Davy Faraday-Layered solid #1 (2.95 nm), H+-Jilin Davy Faraday-Layered solid #1 (0.92 nm) and Na+-Jilin Davy Faraday-Layered solid #1 (1.08 nm).