Summary
The determination of the chemical heterogeneity of copolymers has been carried out by means of gel-permeation chromatography (GPC). Consequently mixtures of different homopolymers with the same relative molecular masses have been fractionated. Although maximum chemical non-uniformity appears, non-uniform effects obtained from the GPC are negligible. It is seen that for copolymers a GPC separation only occurs when the chemical composition of the copolymer changes simultaneously with the degree of polymerisation. We have established that, in a few cases, minute chemical heterogeneity is evident from the GPC curves, but not in the bulk which obeys the kinetics of copolymerisation.
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Stojanov, C., Shirazi, Z.H. & Audu, T.O.K. Determination of chemical heterogeneity of copolymers by gel-permeation chromatography. Chromatographia 11, 63–69 (1978). https://doi.org/10.1007/BF02261765
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DOI: https://doi.org/10.1007/BF02261765