Abstract
Synthesis of the aromatic polyamide with a narrow molecular weight distribution (M w /M n ) was investigated via polycondensation. The new monomers, metal amide anions of 4-(N-octylamino)benzoylbenzoxazolin-2-thione (2) was prepared to prevent conventional polycondensation. The number average molecular weights (M n )s of the resulting polymer could be controlled varying the feed ratio of 2 and p-nitrobenzoyl chloride in the range of 10 3 -10 4 maintaining narrow M w /M n s (∼ 1.15), The kinetic plots of the polymerization gave a linear relationship between polymerization time and -(1/[I] 0 ) ln([M]/[M] 0 ), and the rate of the polymerization was estimated as 116.4 mol -1 h -1 .
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