Effect of operation parameters on temperature rising elution fractionation and crystallization analysis fractionation

Authors

  • Siripon Anantawaraskul,

    1. Department of Chemical Engineering, McGill University, 3610 University Street, Montreal, Canada H3A 2B2
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  • João B. P. Soares,

    Corresponding author
    1. Institute for Polymer Research, Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
    • Institute for Polymer Research, Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1
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  • Paula M. Wood-Adams

    1. Department of Mechanical and Industrial Engineering, Concordia University, Room H 549, 1455 de Maisonneuve Boulevard West, Montreal, Canada H3G 1M8
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Abstract

Crystallization analysis fractionation and temperature rising elution fractionation are two techniques used to estimate the chemical composition distributions of semicrystalline copolymers. This study investigates the cooling rate and cocrystallization effects for both techniques with a series of ethylene/1-olefin copolymers and their blends. Ideally, both techniques should operate in the vicinity of thermodynamic equilibrium so that crystallization kinetic effects are avoided. The results show that, in fact, crystallization kinetic effects play an important role at the typical cooling rate used with both techniques. Cocrystallization is significant when fast cooling rates are used. © 2003 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 41: 1762–1778, 2003

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