Article

Elementary Steps of Initiation and Termination Processes in Radical Polymerization

  1. Michael Buback

Article first published online: 20 JUN 2005

DOI: 10.1002/masy.200550812

Issue

Macromolecular Symposia

Macromolecular Symposia

Special Issue: Polymer Chemistry, Reactions and Processes

Volume 226, Issue 1, pages 121–132, May 2005

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How to Cite

Buback, M. (2005), Elementary Steps of Initiation and Termination Processes in Radical Polymerization. Macromol. Symp., 226: 121–132. doi: 10.1002/masy.200550812

Author Information

  1. Institut für Physikalische Chemie der Georg-August-Universität Göttingen Tammannstraße 6, 37077 Göttingen, Germany

Publication History

  1. Issue published online: 20 JUN 2005
  2. Article first published online: 20 JUN 2005

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Keywords:

  • initiator efficiency;
  • kinetics (radical polym.);
  • peroxides;
  • pulsed laser polymerization;
  • termination

Abstract

Investigations into the kinetics of primary radicals produced in photochemically and thermally induced decomposition of peroxides of type R1C(O)O-OR2 are presented. The correlation of peroxide structure with decomposition rate and with initiator efficiency in radical polymerizations is discussed. Termination rate coefficients, kt, as a function of temperature, pressure, polymer content, and of chain length may be deduced from two types of time-resolved experiments in which, after applying an excimer laser pulse, either monomer conversion is measured via near-infrared spectroscopy or the decay in radical concentration is monitored via electron spin resonance.

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