Polymerization of methyl methacrylate in the presence of a nonpolar hydrocarbon solvent. I. Construction of a complete ternary phase diagram through an in situ polymerization

Authors

  • Yunju Jung,

    1. Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742
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    • The first two authors contributed equally to this article.

  • Carla Vanesa Luciani,

    1. Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742
    2. INTEC (Universidad Nacional del Litoral—CONICET), Güemes 3450, Santa Fe S3000GLN, Argentina
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    • The first two authors contributed equally to this article.

  • Joong Jin Han,

    1. Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742
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  • Kyu Yong Choi

    Corresponding author
    1. Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742
    • Department of Chemical and Biomolecular Engineering, University of Maryland, College Park, Maryland 20742
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Abstract

This article presents the ternary phase diagram for methyl methacrylate (MMA), poly(methyl methacrylate) (PMMA), and n-hexane system at 70°C. It was constructed by both theoretical calculations and online laser light scattering (LLS) technique. In situ polymerization of MMA in a nonpolar nonsolvent carried out in a LLS cell provides a new means for the accurate detection of the cloud points of highly viscous polymer mixtures, with polymer weight fractions over 0.6. The ternary phase diagram measured in this study can be used to design the reaction conditions for the precipitation and/or dispersion polymerization in a nonpolar nonsolvent medium where polymerization kinetics as well as polymer particle morphologies are strongly affected by thermodynamic phase separation phenomena. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2010

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