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Fractionation of moderate molecular weight polysiloxanes by centrifugal TLC
S K Gupta1, J R Sargent, W P Weber
1KB and DP Loker Hydrocarbon Institute, Department of Chemistry, University of Southern California, Los Angeles 90089-1661, USA.
Analytical Chemistry
|August 21, 2001
Abstract:
Fractionation of polydispersed polysiloxanes (1-2 g) into narrow molecular weight fractions has been achieved by a rapid (30-60 min) convenient process, using the Cyclograph Centrifugal Chromatography System. These narrow molecular weight poly(dimethylsiloxane) fractions can be used as secondary standards for GPC.