Preparation and Properties of Paraffine-Acrylic Acid Hybrid Emulsion

With nonionic OP-10 as emulsifier,potassium persulfate (K_2S_2O_8) as initiator,acrylic acid(AA) modified paraffine(PF) hybrid emulsion was synthesized by seed emulsion polymerization.With the stability of the emulsion as assessment indices,the optimum process conditions for preparing paraffine-acrylic acid (PFAA) hybrid emulsion were determined by orthogonal design method as follows.Reaction temperature was 70~75 ℃,reaction time was 2 h,amounts of initiator and monomer were w(K_2S_2O_8)=0.16%～0.20% and w(AA)=16.5%～18.0%.FTIR analysis indicates that in the macromolecules PF is copolymerized with AA monomers thoroughly.SEM photographs illustrate that the surface properties of PFAA hybrid emulsion are efficiently improved.