Microemulsion and Conventional Emulsion Copolymerizations of Styrene with Methyl Methacrylate

摘要

The microemulsion (M.E.) and conventional emulsion (C.E.) copolymerizations of styrene (STY) with methylmethacrylate (MMA) are carried out at 70°C by employing n-pentanol (PA) and n-octanol (OA),respectively,as cosurfactants along with sodium la uryl sulpha te (SLS) as surfactant in the reaction media,and potassium persulphate (KPS) as initiator.The copolymers are characterized by FTIR,NMR,TG/DTA and GPC techniques.The reactivity ratios are evaluated by employing Fineman-Ross (F-R),Kellen-Tudos(K-T) and Mayo-Lewis integration (M-L-l) methods.