This proceeds in accordance with the equation
Mx + My^MxMy (combination)
or
M x + M у Mx + My (disproportionation)
Rate of termination Rt = 2k, [M ]2 which apphes to termination by combination or disproportionation.
Thus an overall equation for acrylic polymerisation can be written as
Rp = kp[M]( ^ )1/2 = кр[М]ф-
concentration of initiator concentration of monomer
frequency and decomposition constants for the initiator rate coefficient of chain termination
that is: Rp a [M] and Rp a [l]1/2
Plots of Rp against [M] for various monomers produce a straight line graph of the type illustrated below