Abstract
For the first time, stereoregular poly(methyl methacrylates) (PMMAs) were separated according to tacticity on a carbon-based stationary phase using solvent gradient interaction chromatography (SGIC). This stationary phase provides superior separation capabilities, enabling the baseline separation of highly isotactic and syndiotactic PMMAs of different molar masses. Two-dimensional liquid chromatography was performed with the SGIC method separating, according to tacticity 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.
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