Question

If an initiator has a halt-life of 4h, what percentage of this initiator will remain after 12 h? Which is the better way to increase polymer production rates for free-radical reactions in general (a) increasing temperature or (b) increasing the initiator concentration and why? What is the limiting step in free-radical chain polymerization? What is the advantage of producing free-radicals by UV radiation instead of thermal energy? If [M] = 1 Times 10^-11 mol/L under steady-state conditions, what will [M] equal after (a) 30. (b) 60. and (c) 90 min? In free-radical polymerization, name two steady-state approximations. Calculate the half-life of benzoyl peroxide in benzene at 66 degrees C given that the rate coefficient k_d for dissociation of this initiator under these conditions is 8 Times 10^-6 s^-1. What will be the change in initiator concentration after 1h at 66 degrees C?
Polymer chemistry

Answer 1