Reliability of Chromatographic Results in Determination of Narrow Molecular Weight Distributions of Polymers

摘要

The influence of the procedure for numerical evaluation of chromatograms on the precision of the calculated molecular parameters of chromatographed polymers and the effect of the precision of the measured physical parameters that determine the resulting chromatogram are studied theoretically in this paper. It is shown by using model log-normal and Poisson molecular weight distributions that molecular parameters and polydispersity of polymers with narrow and ultra-narrow molecular weight distributions in particular can be determined by chromatographic separation methods with high reliability which cannot be obtained when other methods are used.