Comprehensive Microstructure and Molar Mass Analysis of Polybutadiene by Multidimensional Liquid Chromatography

Abstract

For the first time, polybutadiene is separated according to microstructure using solvent gradient interaction chromatography (SGIC). Superior separation of polybutadienes having different microstructures is obtained on a silica-based reversed stationary phase and a mobile phase of acetone-hexane. This SGIC system enables the baseline separation of 1,2-polybutadienes and 1,4-polybutadienes even in cases where the samples have similar molar masses. 2D liquid chromatography is performed with the SGIC method separating according to microstructure in the first dimension coupled to size exclusion chromatography separating according to molar mass in the second dimension, thus providing comprehensive information on both microstructure and molar mass.

Two‐dimensional liquid chromatography with active solvent modulation for studying monomer incorporation in copolymer dispersants

“…. A number of 2D‐LC applications on polymer analysis have been reported in recent years covering a broad range of polymer types and compositions using different combinations of separation mechanisms in the first and second dimensions . Pirok et al.…”