KINETIC ASPECT OF THE EMULSION POLYMERIZATION OF CYCLOHEXYL METHACRYLATE

The emulsion polymerization kinetics of cyclohexyl methacrylate (CHMA) at 50 degrees C using a mixture of anionic and nonionic surfactants w as investigated. The product of the propagation rate constant (k(p)) a nd the number of radicals per particle (($) over bar n) increased mono tonously with the volume-average particle diameter (D-v). The value of k(p) was estimated to be 260 L/(mol . s). Changing the monomer mass f raction in the recipe (from 0,14 to 0,40), the value of ($) over bar n remained constant and close to 0,5. On the other hand, increasing the initiator concentration ([I]), the value of ($) over bar n increased rapidly and then leveled off.