Comparison of DSC curves Copolymerization of vinyl acetate- butyl acrylate with different initiators

In this study, the DSC (Differential scanning calorimetry) curves of copolymerization of vinyl acetate- butyl acrylate in the presence of different initiators investigated. Avinyl acetate- butyl acrylate Copolymer was prepared by aqueous emulsion polymerization which contained 57 to 43 % of monomers in the presence of anionic surfactants and Potassium Persulfate (KPS), Ammonium Persulfate (APS) and AIBN initiators at 65 ° C and at 3 hours. Results show that the Tg value in different initiators are similar (Fig. 1) and copolymerization has taken place between vinyl acetate and butyl acrylate. Therefore, it is possible to use any of the initiators in this type of emulsion copolymerization.