Since, as we have seen v =
If the monomer concentration is kept constant then the kinetic chain length relationship is;
As the rate of polymerisation increases with increase in temperature the molecular weight will decrease:
and
Consider the case of termination by combination.
The degree of polymerisation will be given by:
і = 2v:
2fkd [I]
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Examples for styrene in xylene using AZDN at 50°C and assuming f=l. [I] = 1 x 10"3 mole1 [M] = 1 mole litre"1
і = 17C (D1/2___________ (D1/2 ^
(1.2 x 1 (Г5 x 7.2 x 107)1/2 (1×10“3)’/2 [1] [2]
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