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Analysis of a living polymer mixture by use of small-molecule gel permeation chromatography

✍ Scribed by James H. Cox Jr.; Rayford G. Anthony

Publisher
John Wiley and Sons
Year
1975
Tongue
English
Weight
412 KB
Volume
19
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

A procedure is presented for determining the concentration of polymer lithium, alkyllithium, and monomer by use of small‐molecule GPC. The system poly(styryllithium), butyllithium, styrene, and benzene are used to illustrate the method. The method as presented has a lower limit on the direct measurement of butyllithium concentration of 0.00005 molar. If the total carbon‐bound lithium is to be determined, the limit can be appreciably lowered. The styrenebenzene separation was obtained for concentration ratios of 1:5 or greater. Several suggestions are presented for improving these analyses.

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