Redox initiators from benzoyl peroxide and aromatic amines, study of the mechanism of interaction between benzoyl peroxide and dimethy aniline,study of the rate of decomposition of the complex between benzoyl peroxide and dimethyl aniline,study of the kinetics of redox polymerisation initiated by benzol peroxide and dimethyl aniline,FTIR of Polyvinyl acetate ,saponification of polyvinyl acetate,FTIR of polyvinyl alcohol,determination of molecular weights of polyvinyl acetate and polyvinyl alcohol at 30 degrés C by viscometry ,