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Analysis of a living polymer mixture by use of small‐molecule gel permeation chromatography
Author(s) -
Cox James H.,
Anthony Rayford G.
Publication year - 1975
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1975.070190318
Subject(s) - gel permeation chromatography , benzene , polymer , lithium (medication) , monomer , butyllithium , molecule , size exclusion chromatography , styrene , permeation , chemistry , chromatography , carbon fibers , polymer chemistry , materials science , organic chemistry , copolymer , membrane , composite number , medicine , biochemistry , enzyme , endocrinology , composite material
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.