A Comparison of Methods for Determining Macromolecular Polydispersity from Dynamic Laser Light Scattering Data

Document Type

Article

Publication Date

2-12-1987

Department

Polymers and High Performance Materials

Abstract

Several different methods for extracting macromolecular polydispersity information from normalized intensity correlation functions obtained from dynamic light scattering have been proposed. However, detailed comparisons of these methods are lacking. We have proposed a new analysis method involving the GEX function in conjunction with function fitting. Computer simulated data, convoluted with noise, was used to compare our method with Constrained Regularization and the Subdistribution technique. In general our method yielded results at least as good as those from constrained regularization and is more operator independent. The subdistribution method yielded the poorest results.

Publication Title

ACS Symposium Series

Volume

332

First Page

62

Last Page

73

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