Die Fraktionierung von Polymethylmethacrylaten nach dem Molekulargewicht durch Gegenstromverteilung

Authors

  • P. von Tavel Theodor-Kocher-Institut der Universität, Freiestraße 1, 3012 Bern
  • J. Wälchli Theodor-Kocher-Institut der Universität, Freiestraße 1, 3012 Bern
  • H. Rüfenacht Theodor-Kocher-Institut der Universität, Freiestraße 1, 3012 Bern

DOI:

https://doi.org/10.2533/chimia.1973.86

Abstract

A polydisperse sample of polymethylmethacrylate with an average molecular weight of 168000 has been fractionated by countercurrent distribution into fractions of different molecular weight using a phase pair prepared from acetone, n-hexane and water. A special automatic countercurrent distribution centrifuge was used. The method gives the molecular weight distribution. The resolution of the method is discussed. The average molecular weight calculated from the distribution curve corresponds to the weight average measured in the unfractionated methacrylate.

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Published

1973-02-28

Issue

Vol. 27 No. 2 (1973): Forschung/Research

Section

Articles

License

Copyright (c) 1973 P. v. Tavel

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

[1]
P. von Tavel, J. Wälchli, H. Rüfenacht, Chimia 1973, 27, 86, DOI: 10.2533/chimia.1973.86.