MICROEMULSION POLYMERIZATION OF STYRENE INITIATED WITH POTASSIUM PERSULFATE

The monomer content and the ratio of monomer to emulsifier in styrene microemulsion were greatly uplifted when it was stabilized with an emu lsifier with Y structure, The microemulsion was polymerized in dilatom eter with potassium persulfate as an initiator, The change of polymeri zation rate with conversion was recorded, and the plateau of polymeriz ation rate in microemulsion polymerization of styrene was first observ ed. The length of the plateau was shortened with the increase of KPS c oncentration and emulsifier concentration, or with the decrease of mon omer concentration, The polymerization kinetics and the polymerization mechanisms were also discussed.