Determination of chemical composition distribution of poly(methyl methacrylate)-graft-polystyrene by adsorption high-performance liquid chromatography

Abstract

Three poly(methylmethacrylate)-graft-polystyrene samples of different compositions at low conversions and four samples obtained at different conversions from the same monomer feed compositions were separated and analyzed by HPLC using reversed-phase combination of an octadecyl-modified silica gel column and a linear gradient of THF and acetonitrile. The samples were eluted from components of high MMA content to components of low MMA content. The chromatograms were converted to chemical composition distributions using three samples of different compositions as standards by the optimization method