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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)

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Laupretre, F Legras, Roger [UCL] Bebelman, Sabine [UCL] Daoust, Daniel [UCL] Devaux, Jacques [UCL] Costa, JL.

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.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 1999
Language Anglais
Journal information "Journal of Applied Polymer Science" - Vol. 74, no. 13, p. 3165-3172 (1999)
Peer reviewed yes
Publisher John Wiley & Sons Inc (New York)
issn 0021-8995
e-issn 1097-4628
Publication status Publié
Affiliation UCL - FSA/MAPR - Département des sciences des matériaux et des procédés
Keywords ethylene-propylene copolymer ; isotactic polypropylene ; blends ; infrared spectroscopy ; solid-state NMR ; crystallinity
Links
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Bibliographic reference Laupretre, F ; Legras, Roger ; Bebelman, Sabine ; Daoust, Daniel ; Devaux, Jacques ; et. al. 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). In: Journal of Applied Polymer Science, Vol. 74, no. 13, p. 3165-3172 (1999)
Permanent URL http://hdl.handle.net/2078.1/44064