Published December 1986
| public
Journal Article
Model copolymerization reactions. Determination of the relative rates of addition of styrene and acrylonitrile to the 1-phenylethyl radical
- Creators
- Cywar, Douglas A.
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Tirrell, David A.
Abstract
1,1'-Azobis(1-phenyl[1-^(13)C]ethane) (1) was prepared in 15% overall yield, starting from [1-^(13)C]acetic acid (99 atom %). Analysis of end-group concentrations in styrene-acrylonitrile copolymers prepared with 1 as initiator allows accurate determination of the relative rates of addition of these monomers to the 1-phenylethyl radical. We obtain k_s/k_A = 0.20 ± 0.02, a result consistent with the penultimate model treatment of the styrene-acrylonitrile copolymerization by Hill, O'Donnell, and O'Sullivan.
Additional Information
© 1986 American Chemical Society. Received June 23, 1986. Acknowledgment is made to the donors of the Petroleum Research Fund, administered by the American Chemical Society, for partial support of this work. Support of our research by a Presidential Young Investigator Award of the National Science Foundation (to D.A.T.) is also gratefully acknowledged. NMR spectra were recorded in the University of Massachusetts NMR Laboratory, which is supported in part by the NSF Materials Research Laboratory at the University. We thank Craig Woolley for valuable assistance in obtaining quantitative NMR spectra.Additional details
- Eprint ID
- 53597
- Resolver ID
- CaltechAUTHORS:CYWm1986
- American Chemical Society Petroleum Research Fund
- NSF
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