Chapter 24. Unusual Kinetics in Aqueous Heterophase Polymerizations

  1. Prof. Dr. Michael Buback2 and
  2. A. M. van Herk3
  1. Klaus Tauer,
  2. Muyassar Mukhamedjanova,
  3. Christian Holtze,
  4. Pantea Nazaran and
  5. Jeongwoo Lee

Published Online: 31 MAY 2007

DOI: 10.1002/9783527610860.ch24

Radical Polymerization: Kinetics and Mechanism, Volume 248

Radical Polymerization: Kinetics and Mechanism, Volume 248

How to Cite

Tauer, K., Mukhamedjanova, M., Holtze, C., Nazaran, P. and Lee, J. (2007) Unusual Kinetics in Aqueous Heterophase Polymerizations, 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.ch24

Editor Information

  1. 2

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

  2. 3

    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. Max Plank Institute of Colloids and Interfaces, Am Mühlenberg, D 14476 Golm, Germany

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:

  • radical polymerization;
  • kinetics;
  • mechanism;
  • polymerization in heterogeneous systems;
  • 2,2′-azobisisobutyronitrile;
  • block copolymers;
  • unusual kinetics;
  • aqueous heterophase polymerization;
  • microwave heating;
  • particle nucleation

Summary

The heterogeneous nature of aqueous heterophase polymerizations is the base for an easy route to unique block copolymers, for the development of new and more effective polymerization strategies, and the abilities to unique studies of radical polymerization kinetics. Thermo-sensitive double hydrophilic block copolymers and micro- or nano-gel particles of poly(N-isopropyl acrylamide) as thermo-responsible block and charged or uncharged hydrophilic polymers can easily be prepared if the polymerization of N-isopropyl acrylamide is started with the corresponding polymeric radicals. The application of extremely fast microwave heating allows the development of highly effective pulsed thermal polymerization strategies and the production of polymers with desired molecular weight distributions over wide ranges. 2,2′-azobisisobutyronitrile simultaneously initiates the polymerization in both the monomer and the aqueous phase and leads, even under surfactant-free conditions, to stable latex particles.