Chapter 4. Investigation of the Chain Length Dependence of kp: New Results Obtained with Homogeneous and Heterogeneous Polymerization

  1. Prof. Dr. Michael Buback3 and
  2. A. M. van Herk4
  1. Irene Schnöll-Bitai1 and
  2. Christoph Mader2

Published Online: 31 MAY 2007

DOI: 10.1002/9783527610860.ch4

Radical Polymerization: Kinetics and Mechanism, Volume 248

Radical Polymerization: Kinetics and Mechanism, Volume 248

How to Cite

Schnöll-Bitai, I. and Mader, C. (2007) Investigation of the Chain Length Dependence of kp: New Results Obtained with Homogeneous and Heterogeneous Polymerization, in Radical Polymerization: Kinetics and Mechanism, Volume 248 (eds M. Buback and A. M. van Herk), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany. doi: 10.1002/9783527610860.ch4

Editor Information

  1. 3

    Institute of Physical Chemistry, Georg-August-University Göttingen, Tammannstrasse 6, D-37077 Göttingen, Germany

  2. 4

    Laboratory for Polymer Chemistry, Department of Chemical Engineering and Chemistry, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, The Netherlands

Author Information

  1. 1

    Institute of physical chemistry, University of Vienna, Währinger Straße 42, A-1090 Vienna, Austria

  2. 2

    Isovolta AG, Industriezentrum NÖ Süd, Straße 3, A-2355 Wiener Neudorf, Austria

Publication History

  1. Published Online: 31 MAY 2007
  2. Published Print: 13 APR 2007

ISBN Information

Print ISBN: 9783527320561

Online ISBN: 9783527610860

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Keywords:

  • gel permeation chromatography;
  • kinetics (polym.);
  • polystyrene;
  • radical polymerization

Summary

New experimental results were collected for the free radical polymerization of styrene by pulsed laser polymerization in solution or in microemulsion. The location of the point of inflection (on the low molecular weight side) and the maximum of the first peak in the chromatograms (measured by size-exclusion chromatography) was used to extract kp data. The extent of band broadening was determined with narrow polystyrene standards with an assumed Poisson chain length distribution. For a given experiment both kp values (obtained via the point of inflection and the maximum) were corrected and thus became identical in most cases. Even after the correction, the effect of chain length dependence persists to a higher chain length.