Solvent effects on the propagation rate coefficient for free radical polymerization

Morrison, B.R., Piton, M.C., Winnik, M.A., Gilbert, R.G. and Napper, D.H. (1993) Solvent effects on the propagation rate coefficient for free radical polymerization. Macromolecules, 26 16: 4368-4372. doi:10.1021/ma00068a046


Author Morrison, B.R.
Piton, M.C.
Winnik, M.A.
Gilbert, R.G.
Napper, D.H.
Title Solvent effects on the propagation rate coefficient for free radical polymerization
Journal name Macromolecules   Check publisher's open access policy
ISSN 0024-9297
1520-5835
Publication date 1993-08-01
Sub-type Article (original research)
DOI 10.1021/ma00068a046
Volume 26
Issue 16
Start page 4368
End page 4372
Total pages 5
Place of publication Washington, DC, United States
Publisher American Chemical Society
Language eng
Formatted abstract
The effect of solvent on the propagation rate coefficient (kp) for styrene and methyl methacrylate was examined using pulsed laser polymerization. Solvents used were ethanol and methanol over the range 25-50°C. Solvent:monomer ratios were increased until phase separation of the polymer was observed during the polymerization. A block copolymer was also used to stabilize the formed particle phase, thereby simulating the early-time nucleation behavior of dispersion polymerization systems. There were no observable solvent effects on kp. This can be rationalized in terms of the transition state for propagation, where the reaction coordinate comprises the incipient bond in a configuration such that solvent molecules can play no direct role in the reaction dynamics.
Keyword Flash-initiated Polymerization
Individual Kinetic Constants
Pulsed Laser Technique
Emulsion Polymerization
Methyl-methacrylate
Dynamics
Friction
Tool
Parameters
Dependence
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Nutrition and Food Sciences Publications
School of Chemistry and Molecular Biosciences
 
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Created: Tue, 08 Mar 2011, 01:53:45 EST