Dynamic simulation and experimental evaluation of EPDM terpolymerization with vanadium-based catalyst

• Published in: Journal of applied polymer science Vol. 70; no. 6; pp. 1173 - 1189
• Main Authors: Haag, Mônica Carcuchinski, dos Santos, João Henrique Zimnoch, Dupont, Jairton, Secchi, Argimiro Resende
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 07.11.1998; Wiley
• Subjects: Applied sciences; Copolymerization; EPDM; Exact sciences and technology; modeling; olefin terpolymerization; Organic polymers; Physicochemistry of polymers; Preparation, kinetics, thermodynamics, mechanism and catalysts; vanadium catalysts; Kinetic model; Terpolymerization; EPDM rubber; Experimental test; Ziegler Natta catalyst; Vanadium Chlorides; Aluminium Organic compounds; Kinetic parameter; Catalyst activity; Complex catalyst copolymerization
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/(SICI)1097-4628(19981107)70:6<1173::AID-APP15>3.0.CO;2-0

The development of a simplified kinetic model describing some effects observed in catalyzed olefin terpolymerization is presented. Based on the method of moments, the model describes the influence of Al/V ratio and diene concentration on reaction yield and on polymer characteristics such as molecular weight, ethylene incorporation, and polydispersity. In order to verify the model validity, the terpolymerization reactions were performed using VOCl3–Al2Et3Cl3 systems and 2‐ethylidenebi‐cyclo[2.2.1]hept‐5‐ene (ENB) as diene. The results of dynamic simulation fit well the experimental data for Al/V up to 15, but the model fails under high diene concentration, where branching reactions, neglected by reason of simplification, become significant. © 1998 John Wiley & Sons, Inc. J. Appl. Polym. Sci. 70: 1173–1189, 1998