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• Belbachir, M
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Int. J. Mol. Sci. 2003, 4(11), 572-585; doi:10.3390/i4110572

Article

Cationic Polymerization of 1,2-Epoxypropane by an Acid Exchanged Montmorillonite Clay in the Presence of Ethylene Glycol

Ahmed Yahiaoui, Mohammed Belbachir*  and Aïcha Hachemaoui

Laboratoire de chimie des polymères, Département de Chimie, Faculté des Sciences, Université d’Oran, BP 1524 El’Menouer Oran 31000 Algérie

* Author to whom correspondence should be addressed.

Received: 7 May 2003 / Accepted: 14 October 2003 / Published: 27 October 2003

Download PDF Full-Text [290 KB, uploaded 28 August 2008 16:06 CEST]

Abstract: The polymerization of propylene oxide (PO) catalysed by maghnite-H⁺ (mag-H⁺) in the presence of ethylene glycol was investigated. Mag-H⁺ is a montmorillonite silicate sheet clay was prepared through a straight forward proton exchange process. It was found that the cationic polymerization of PO was initiated by mag-H⁺ at 20 °C both in bulk and in solution. The effect of the amount of mag-H⁺ and solvent was studied. These results indicated the cationic nature of the polymerization A possible initiation pathway, via the transfer of protons from mag-H⁺ to the monomer, is proposed.

Keywords: maghnite; montmorillonite; catalyst; epoxides; propylene oxide; ring opening polymerization

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