Polyurethane coatings based on star polymers prepared by ionic polymerization

摘要

This work is focused on the preparation of star polymers by ionic polymerization.Star polymers with different arm numbers were prepared from different ratio of arm forming chemicals.Trimethylol propane,Pentaerythritol and Dipentaerythrythol were used as core forming chemicals.￡-Caprolactame and lactic acid were used for arm forming with different ratio of both.The yeld of all synthesis was about 99 %.The prepared polymers were characterized by Size Exclusion Chromatography coupled with static Multi Angle Light Scattering(SEC-MALS).