ISSN:
0887-624X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Mass spectral analysis of the gas-chromatography-separated pyrolysis products of the solid polymer formed in a toluene plasma has shown the presence of a number of phenyl-containing structures. Of particular interest is the biphenyl product, whose isotopic distribution patterns are very different for the polymers prepared from natural 13C abundance and 13CH3-labeled toluene. This result is interpreted in terms of carbon atom scrambling via seven-membered-ring intermediates in the gas phase during plasma polymerization. A comparison of measured isotopic patterns with calculated patterns reveals that 34 ± 10% of the toluene molecules scramble prior to polymer formation. This value is similar to an upper bound on scrambling determined here but based on earlier NMR results1 and reinforces a model for the structure of plasma-polymerized toluene established in that work.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/pola.1986.080240607
