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Automated batch characterization of polymer solutions by static light scattering and viscometry
Author(s) -
Strelitzki Roland,
Reed Wayne F.
Publication year - 1999
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19990919)73:12<2359::aid-app5>3.0.co;2-h
Subject(s) - viscometer , virial coefficient , radius of gyration , static light scattering , polymer , polymer chemistry , materials science , molar mass , light scattering , intrinsic viscosity , molar mass distribution , capillary action , gyration , viscosity , analytical chemistry (journal) , scattering , chemistry , thermodynamics , chromatography , composite material , optics , physics , mathematics , geometry
Using a programmable mixing pump, light scattering flow chamber, refractive index detector, and single capillary viscometer, the batch (unfractionated) characterization of polymers in solution has been automated. Three different schemes to produce polymer concentration gradients were used, and values for weight average mass M w , root mean square radius of gyration 〈 S 2 〉 1/2 , second virial coefficient A 2 , and intrinsic viscosity [η] were determined for a broad distribution sample of poly(vinyl pyrrolidone) (PVP) and a narrow fraction of poly(ethylene oxide) (PEO). High concentration experiments on the PVP also allowed determination of the third virial coefficient A 3 . The method has several advantages over traditional manual methods in terms of accuracy, sample preparation, and amount of labor required. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 2359–2368, 1999