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Digitale Medien

Chromatographic fractionation of polyolefins (1962)

Guillet, J. E. ; Combs, R. L. ; Slonaker, D. F. ; [weitere]

Stamford, Conn. [u.a.] : Wiley-Blackwell

Polymer Engineering and Science 2 (1962), S. 164-169

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Details

ISSN: 0032-3888

Schlagwort(e): Chemistry ; Chemical Engineering

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Chemie und Pharmazie , Maschinenbau , Physik

Notizen: The results compare favorably with those obtained by careful refractionation of fractions isolated by the precipitation method. A convenient parameter, U, related to the breadth of the molecular weight distribution can be calculated from the slope of the log-probability plot. When the plot is linear, U, is numerically equal to the ratio Mw/Mn. Values of U obtained for a number of commercial and experimental polypropylenes indicate that, with a given type of polypropylene, the breadth of the distribution increases as the average molecular weight of the sample increases, and that wide differences in distribution can be expected from polymers made by different processes.

Zusätzliches Material: 7 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/pen.760020229

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