title: Preparation of poly(oxybutyleneoxymaleoyl) catalyzed by a proton exchanged montmorillonite clay.
abstract: The polycondensation of tetrahydrofuran with maleic anhydride catalyzed by Maghnite-H+ (Mag-H) was investigated. Maghnite is a montmorillonite sheet silicate clay that is exchanged with protons to produce Maghnite-H [1]. It was found that the polymerization in bulk is initiated by Mag-H in the presence of acetic anhydride at 40 degrees C. The effects of the amounts of Mag-H and acetic anhydride were studied. The polymerization yield increased as the proportions of catalyst and acetic anhydride were increased.
authors.affiliation: Laboratoire de Chimie des Polymères, Département de Chimie, Faculté des Sciences, Université d'Oran Es-Sènia BP No 1524 El M'Naouar, 31000 Oran, Algeria. mohammed.ferrahi@caramail.com
authors.forename: Mohammed Issam
authors.initials: MI
authors.lastname: Ferrahi
authors.forename: Mohammed
authors.initials: M
authors.lastname: Belbachir
mesh_terms: D000089:Acetic Anhydrides / Q000737:chemistry; D000538:Aluminum Silicates / Q000737:chemistry*; D001546:Bentonite / Q000737:chemistry*; D002384:Catalysis; D000077215:Clay; D005663:Furans / Q000737:chemistry*; D008299:Maleic Anhydrides / Q000737:chemistry*; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D011522:Protons
chemical_list: D000089:Acetic Anhydrides; D000538:Aluminum Silicates; D005663:Furans; D008299:Maleic Anhydrides; D011108:Polymers; D011522:Protons; D001546:Bentonite; C018674:tetrahydrofuran; D000077215:Clay