Initiator lj häs hålf the izes 4 times as fast as monomer M2 at 80°C, when initiator I is used for both and all the concentrations are the same. What is the ratio of degree of polymerization for M1 and M2 if they are polymerized with initiator I1 and I2, respectively, the ratio of monomer concentrations being 1:2 and that of initiator concentrations being 1:5? It can be assumed that both polymers terminate exclusively by coupling and that the initiator efficiencies are equal.

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> 6.9 Initiator I has half the half-life that initiator I2 has at 80°C. Monomer Mi polymer-
izes 4 times as fast as monomer M2 at 80°C, when initiator I is used for both and
all the concentrations are the same. What is the ratio of degree of polymerization for
M1 and M2 if they are polymerized with initiator I1 and I2, respectively, the ratio of
monomer concentrations being 1:2 and that of initiator concentrations being 1:5? It
can be assumed that both polymers terminate exclusively by coupling and that the
initiator efficiencies are equal.
[Ans. 3.16]
Transcribed Image Text:> 6.9 Initiator I has half the half-life that initiator I2 has at 80°C. Monomer Mi polymer- izes 4 times as fast as monomer M2 at 80°C, when initiator I is used for both and all the concentrations are the same. What is the ratio of degree of polymerization for M1 and M2 if they are polymerized with initiator I1 and I2, respectively, the ratio of monomer concentrations being 1:2 and that of initiator concentrations being 1:5? It can be assumed that both polymers terminate exclusively by coupling and that the initiator efficiencies are equal. [Ans. 3.16]
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