Cinétique de polymérisation d’un phosphonate méthylique de sodium en milieu aqueux (Polymerization kinetics of a sodium methylphosphonate in an aqueous medium)

The aim of this work is to prepare polystyrene latex functionalized with phosphonate groups using the surfactant methacrylic monomer, sodium methyl-11-methacryloyloxyundecylphosphonate (mp11). to assess the possibility of incorporation of the mp11 in polystyrene, we determined its report kp2/kte. the kinetics were performed under the same conditions as those with styrene that is to say, taking potassium persulfate (k2s2o8) as initiator and a temperature t = 70 °c. the kinetics of disappearance of monomer mp11 was developed. the evolution of monomer concentration versus time allowed to access the value of kp2/kte = 0,261 l. mol-1.s-1. this value is quite comparable to those of similar structures monomers. lauryl and cetylmethacrylate have values kp2/kte equal to 0,353 and 0,563 l. mol-1.s-1 respectively. the results show that our mp11 can be used for the preparation of latex of polystyrene functionalized with phosphonate groups.