On the molecular weight determination of a poly(aryl-ether-ether-ketone) (PEEK)

Attempts have been made to determine the weight average molecular weight ( M ̄ W ), the radius of gyration ( R ̄ G ) and the second virial coefficient ( A 2) of five samples of poly(ether-ether-ketone) (PEEK) by light scattering (LS) in concentrated sulphuric acid. Account has been taken of the sulp...

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Veröffentlicht in:	Polymer (Guilford) 1985-12, Vol.26 (13), p.1994-2000
Hauptverfasser:	Devaux, J., Delimoy, D., Daoust, D., Legras, R., Mercier, J.P., Strazielle, C., Nield, E.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Exact sciences and technology gel permeation chromatography light scattering molecular weight determination Organic polymers Physicochemistry of polymers poly(ether-ether-ketone) poly(ether-ether-ketone) solvent Properties and characterization Structure, morphology and analysis viscometry
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Zusammenfassung:	Attempts have been made to determine the weight average molecular weight ( M ̄ W ), the radius of gyration ( R ̄ G ) and the second virial coefficient ( A 2) of five samples of poly(ether-ether-ketone) (PEEK) by light scattering (LS) in concentrated sulphuric acid. Account has been taken of the sulphonation of the polymer. Correlations between LS-molecular weights, melt viscosities and intrinsic viscosities in sulphuric acid or in a 50 50 phenol-trichlorobenzene mixture have been established. Gel permeation chromatography (g.p.c.) analyses at 115°C have been performed in this latter solvent and two calibration methods were compared.
ISSN:	0032-3861 1873-2291
DOI:	10.1016/0032-3861(85)90179-X