Dissolve 2.0 g poly (vinyl alcohol) in 200 ml distilled water in the round bottom flask by beating to 90 ° C with a constant stirring. During this beating up dissolve 1.0g (damp weight) benzoyl peroxide (see Note I) in. 50 ml styrene.
When poly(vinyl alcohol in the reaction flask has completely dissolved,start to add the styrene /benzoyl peroxide. solution dropwise from the funnel. Carefully adjust the stirrer speed so that the styrene is dispersed into tiny droplets. With continuous stirring, allow the polymerization to proceed for a further 2 hours while maintaining the temperature at 90-95°c. The polymer synthesized is filtered, washed with water and dried.