The direct syntheses of poly(p-phenyleneterephthalamide) in presence o
f poly(vinylpyrrolidone) and poly(4-vinylpyridine) as matrices have be
en carried out following the so-called Yamazaki's and Higashi's method
s. The intrinsic viscosity data of the resulting polyamide were found
to be strongly dependent on the matrix used as well as on its molecula
r weight.