A Protons Exchanged Montmorillonite Clay as an Efficient Catalyst for the Reaction of Isobutylene Polymerization

International Journal of Molecular Sciences

Amine Harrane¹  Rachid Meghabar¹ 

[1] Laboratoire de Chimie des Polymères, Département de Chimie, Faculté des Sciences, Université d’Oran Es-Senia BP N° 1524 El M’Naouar, 31000 Oran ALGERIEFax: [phone]. E-Mail

关键词: Maghnite;    Montmorillonite;    Catalyst;    Isobutylene;    Polyisobutylene.;   

DOI  :  10.3390/i3070790

来源: mdpi

【 摘 要 】

“Maghnite” a montmorillonite sheet silicate clay, exchanged with protons to produce “H Maghnite” is an efficient catalyst for cationic polymerization of many vinylic and heterocyclic monomers (Belbachir, M. U.S. Patent. 066969.0101 –2001). The structure compositions of both “Maghnite” and “H Maghnite” have been developed. Isobutylene monomer, wich is polymerizable only by cationic process (Odian,G. La Polymerisation :principes et Applications; Ed.Technica: New York, 1994; pp 222-226), was used to elucidate the cationic character of polymerization

The polymerization was performed under suitable conditions at isobutylene vaporization temperature (–7°C). Experiments revealed that polymerization induced by “H-Maghnite” proceed in bulk and in solution. In contrast to findings with methylene chloride CH₂Cl₂ as a polar solvent, polymerization yields with hexane C₆H₁₄ non-polar solvent is very significant. In bulk polymerization, Isobutylene conversion increases with increasing “H-Maghnite” proportion.

【 授权许可】

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© 2002 by MDPI (http://www.mdpi.org).