eco-catalyst

Telechelic poly(3-glycidoxypropyltrimethoxysilane) (PGPTMS) with acetate and methacrylate end groups was successfully synthesized by an efficient and solvent-free approach, with anhydrides (acetic anhydride (AA) and methacrylic anhydride (MA)), by cationic ring-opening polymerization of 3 glycidoxypropyltrimetho-xysilane (GPTMS), using an ecologic solid catalyst Maghnite-H⁺ (Mag-H⁺), instead of electrophilic catalysts, such as, Bronsted and Lewis acids which are very noxious and corrosive.

In the present work we have explored a new catalyst prepared with Algerian clay and a new method to synthesise polystyrene and poly(1,3-dioxolane). This technique consists of using Algerian modified clay (Kaolinite-H⁺) as a green catalyst. Kaolinite-H⁺ is a proton exchanged clay which is prepared through a simple exchange process. Synthesis experiments are performed in bulk. The polymerization of styrene in bulk leads to the yield of 83 % at room temperature with the reaction time of 3 h.