Spontaneous copolymerization of maleic anhydride and N-vinylimidazole in 1,4-dioxane. I. Charge transfer complexation and kinetics of the copolymerization

• Published in: Journal of polymer science. Part A, Polymer chemistry Vol. 35; no. 17; pp. 3735 - 3743
• Main Authors: Göksel, C., Hacioğlu, B., Akbulut, U.
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 01-12-1997; Wiley
• Subjects: Applied sciences; charge transfer complex; Copolymerization; Exact sciences and technology; kinetics; maleic anhydride; N-vinylimidazole; Organic polymers; Physicochemistry of polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; spontaneous copolymerization; Equilibrium constant; Imidazole(vinyl) copolymer; Reaction order; Alternating copolymer; Alternating copolymerization; Solution copolymerization; Maleic anhydride copolymer; Kinetics; Experimental study; Charge transfer; Activation energy; Reactivity ratio
• ISSN: 0887-624X; 1099-0518
• DOI: 10.1002/(SICI)1099-0518(199712)35:17<3735::AID-POLA13>3.0.CO;2-E

Maleic anhydride (MAH) and N‐vinylimidazole (NVIM) were found to form a charge transfer complex in 1,4‐dioxane. The equilibrium constant, K, of the complex and its composition were calculated from the modified Benesi–Hildebrand equation by using UV spectrophotometry. Spontaneous copolymerization of MAH and NVIM has been studied in the range from 20 to 80 mol % MAH in the feed. The effects of the polymerization temperature, monomer feed composition, and total monomer concentration on the initial rate of polymerization were investigated. The values of overall activation energy, Ea, and overall order with respect to total monomer concentration were calculated. Copolymer compositions were found from the elemental analysis data. Reactivity ratios were calculated by the extended Kelen—Tüdos method. © 1997 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 35: 3735–3743, 1997