Problem 2.2 Styrene is polymerized by free-radical mechanism in solution. The in

Question

Problem 2.2 Styrene is polymerized by free-radical mechanism in solution. The initial monomer and initiator concentrations are 1 M (molar) and 0.001 M, respectively. At the polymerization temperature of 60 degrees celius, the initiator efficiency is 0.30. The rate constants at the polymerization temperature are as follows:

Given this information, determine the following:

a) Rate of initiation at 1 min and at 16.6 h

b) Steady-state free-radical concentration at 1 min

c) Rate of polymerization at 1 min

e) Number-average degree of polymerization at 1 min.

This is chemical engineering

From the book Polymer Science and Technology second edition Joel R. Fried

Explanation / Answer

a) dI/dt = kd x t

= 1.2 x 10-5 x 1= 1.2 x 10-5

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