NMR, differential scanning calorimetry, and Fourier transform infrared characterization of the crystalline degree and crystallite dimensions of ethylene runs in isotactic polypropylene/ethylene-propylene copolymer blends (iPP/EP)

Laupretre, F;Legras, Roger;Bebelman, Sabine;Daoust, Daniel;Costa, JL.;et.al.
(1999) Journal of Applied Polymer Science — Vol. 74, n° 13, p. 3165-3172 (1999)

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  • Laupretre, F
    Author
  • Legras, RogerUCLouvain
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  • Bebelman, SabineUCLouvain
    Author
  • Daoust, DanielUCLouvain
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  • Devaux, JacquesUCLouvain
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  • Costa, JL.
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Abstract
High-resolution solid-state C-13-NMR, differential scanning calorimetry, and Fourier transform infrared spectroscopy were used to compare the very low crystalline degree and crystallite dimensions of ethylene runs in a series of isotactic polypropylene/ethylene-propylene copolymer blends exhibiting a range of properties. Results obtained from the three techniques on samples with the same thermal history are in a satisfying qualitative agreement. They show that the morphology of the polyethylene domains is only very slightly dependent on the viscosity ratio of the two blend components. On the opposite, it is largely governed by the ethylene content of the ethylene-propylene copolymer. (C) 1999 John Wiley & Sons, Inc.
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Laupretre, F., Legras, R., Bebelman, S., Daoust, D., Devaux, J., & Costa, JL. (1999). NMR, differential scanning calorimetry, and Fourier transform infrared characterization of the crystalline degree and crystallite dimensions of ethylene runs in isotactic polypropylene/ethylene-propylene copolymer blends (iPP/EP). Journal of Applied Polymer Science, 74(13), 3165-3172. https://doi.org/10.1002/(SICI)1097-4628(19991220)74:13<3165::AID-APP20>3.0.CO;2-A (Original work published 1999)