10 molecules of ARB initially
MWR = 100 , Meg ~ 18, we neglect MWeg wrt MWR.
At time t we have 5 polymer molecules with the following distribution
MW* |
Species |
By product |
Conversion of monomer
|
||
100 |
ARB |
||||
100 |
ARB |
||||
200 |
AR2B |
+ AB |
|||
300 |
AR3B |
+ 2AB |
|||
300 |
AR3B |
+ 2AB |
*Neglecting Meg
p = fraction of functional groups of A that have reacted.
There are 5 molecules of polymer that remain: 2 of ARB, 1 of AR2B, and 2 of AR3B.
We are giving to calculate
by three different methods, all of which yield the same result.