"Maghnite", a montmorillonite sheet silicate clay, exchanged with protons to produce "H-Maghnite" is an efficient catalyst for cationic polymerisation of many
ABSTRACT:The polymerization of styrene oxide was carried out at 20°C in chloroform with an acid-exchanged montmorillonite as acid solid ecocatalyst (Mag-H ϩ ). The effect of the amount of catalyst, solvent, and concentration of monomer on yield and molecular weight of polymer was studied. A typical reaction product (PSTO) was analyzed by infrared and nuclear magnetic resonance spectroscopy, as well as by gel-permeation chromatography and MALDI-TOFMS. The mechanism of the polymerization appears to be cationic.
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