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Polymer characterization by thermal field flow fractionation with a continuous viscosity detector
Author(s) -
Kirkland J. J.,
Rementer S. W.,
Yau W. W.
Publication year - 1989
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/app.1989.070380717
Subject(s) - viscometer , polymer , calibration , field flow fractionation , viscosity , intrinsic viscosity , materials science , characterization (materials science) , polymer characterization , detector , analytical chemistry (journal) , chemistry , fractionation , optics , chromatography , nanotechnology , composite material , physics , scanning transmission electron microscopy , quantum mechanics , transmission electron microscopy , energy filtered transmission electron microscopy
A sensitive flow viscometer detector has been successfully used with time‐delay, exponential‐decay thermal field flow fractionation (TDE‐TFFF) to produce unique information on polymers. TFFF with a concentration‐dependent detector (e.g., refractometer) and a differential capillary viscometer is unable to produce a universal calibration plot that eliminates the necessity of polymer standards for accurate molecular‐weight calibration. However, this system directly provides valuable information on the inherent (or intrinsic) viscosity distribution of polymers. Absolute intrinsic viscosity values are measured by TFFF without the need of calibration. Detailed TFFF/inherent‐viscosity distribution profiles uniquely describe individual sample differences and are not affected by the experimental conditions used in TFFF separations. These viscosity distributions should be very useful in polymer characterization, since they are closely correlated with polymer end‐use and solution properties, as well as to polymer molecule weight.