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Model copolymerization reactions. Determination of the relative rates of addition of styrene and acrylonitrile to the 1-phenylethyl radical

Cywar, Douglas A. and Tirrell, David A. (1986) Model copolymerization reactions. Determination of the relative rates of addition of styrene and acrylonitrile to the 1-phenylethyl radical. Macromolecules, 19 (12). pp. 2908-2911. ISSN 0024-9297. http://resolver.caltech.edu/CaltechAUTHORS:CYWm1986

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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.


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http://dx.doi.org/10.1021/ma00166a005DOIArticle
http://pubs.acs.org/doi/abs/10.1021/ma00166a005PublisherArticle
ORCID:
AuthorORCID
Tirrell, David A.0000-0003-3175-4596
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.
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American Chemical Society Petroleum Research FundUNSPECIFIED
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Record Number:CaltechAUTHORS:CYWm1986
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:CYWm1986
Official Citation:Model copolymerization reactions. Determination of the relative rates of addition of styrene and acrylonitrile to the 1-phenylethyl radical Douglas A. Cywar and David A. Tirrell Macromolecules 1986 19 (12), 2908-2911
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:53597
Collection:CaltechAUTHORS
Deposited By: Anne Hormann
Deposited On:22 Jan 2015 00:41
Last Modified:22 Jan 2015 00:41

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