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5696964 
Journal Article 
Characterization of styrene-butadiene block copolymers by gel permeation chromatography 
Boborodea, AG; Clemens, M; Albu, AM; Vasilescu, DS 
1999 
1 
LCGC North America
ISSN: 1527-5949
EISSN: 1939-1889 
ADVANSTAR COMMUNICATIONS 
DULUTH 
17 
12 
1110-+ 
English 
WOS:000085464800005 
An important feature of linear and star-like styrene-butadiene block copolymers obtained by anionic polymerization is their composition. Pyrolysis gas chromatography and Fourier transform-infrared spectroscopy are reliable tools to ascertain the content of styrene and butadiene, respectively. The authors of this article propose a new way of determining the composition of styrene-butadiene copolymer samples using only gel permeation chromatography. They were able to obtain the molecular mass and composition by accounting for the corrections imposed by the different hydrodynamic volumes.