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Please use this identifier to cite or link to this item: http://hdl.handle.net/10092/7179

Title: Recent Advances in the Understanding of Termination in Radical Polymerization from Using the SP-PLP-EPR Technique
Authors: Barth, J.
Buback, M.
Russell, G.T.
Issue Date: 2012
Citation: Barth, J., Buback, M., Russell, G.T. (2012) Recent Advances in the Understanding of Termination in Radical Polymerization from Using the SP-PLP-EPR Technique. Blacksburg, VA, USA: World Polymer Congress (MACRO2012), 24-29 Jun 2012.
Abstract: Since at least the 1940s, workers have been seeking to understand the kinetics of the fundamental radical-polymerization reaction of termination. This quest has not proven to be easy. Just under a decade ago, two game-changing advances were made that have unleashed rapid progress in the field: (1) The so-called ‘composite model’ was proposed: short radicals and long radicals are characterized by different scaling-law behavior in their rate of termination. (2) Single-pulse pulsed-laser polymerization (SP PLP) was coupled with electron paramagnetic resonance (EPR) spectroscopy to produce a remarkably potent new method for measuring chain-length-dependent termination (CLDT) rate coefficients, in particular those of short radicals. Essentially without exception, the SP-PLP-EPR method has revealed termination behavior in accord with the composite model. Here we summarize three recent SP-PLP-EPR studies, all involving new directions for the application of this technique.
Publisher: University of Canterbury. Chemistry
Research Fields: Field of Research::03 - Chemical Sciences::0303 - Macromolecular and Materials Chemistry::030305 - Polymerisation Mechanisms
Field of Research::03 - Chemical Sciences::0301 - Analytical Chemistry::030101 - Analytical Spectrometry
URI: http://hdl.handle.net/10092/7179
Rights URI: http://library.canterbury.ac.nz/ir/rights.shtml
Appears in Collections:Science: Conference Contributions

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