Determination of monomer reactivity ratios in styrene/2-ethylhexylacrylate copolymer

• Published in: Journal of applied polymer science Vol. 92; no. 5; pp. 3368 - 3370
• Main Authors: Kavousian, A., Ziaee, F., Nekoomanesh, M. H., Leamen, M. J., Penlidis, A.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 05.06.2004; Wiley
• Subjects: 2-ethylhexylacrylate; Applied sciences; copolymerization; Exact sciences and technology; modeling; Physicochemistry of polymers; Polymer industry, paints, wood; radical polymerization; styrene; Technology of polymers; Free radical polymerization; Polymer; Copolymerization; Copolymer; 2-ethylhexylacrylate; Modeling; Reactivity ratio; radical polymerization; Styrene copolymer; styrene
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.20338

The monomer reactivity ratios for styrene/2‐ethylhexylacrylate in bulk at 80°C were investigated by studying the resulting copolymer composition via 1H‐NMR. Composition results were summarized and various methods were employed to estimate the reactivity ratios including the use of the Error‐in‐Variables‐Model (EVM) approach by using the Mayo–Lewis model. The estimates of the reactivity ratios from the EVM method are found to be rs = 0.979 and rEHA = 0.292. The resulting copolymer has a tendency toward alternation with an azeotrope of f(styrene) = 0.972. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 3368–3370, 2004