Wholly aromatic polyamides were synthesized by the low temperature polycondensation and the factors which affect the polycondensation were studied. A relatively high molecular weight poly(m-phenyleneisophthalamide) [MPD-I] was obtained by the interfacial polycondensation when 5 mol % excess of isophthaloyl dichloride was used, but it was very difficult to obtain a high molecular weight poly(p- phenyleneterephthalamide) (PPD-T). In case of the solution polycondensation, relatively high molecular weight wholly aromatic polyamides [PPD-T and MPD-I) could be obtained by the use of a polar amide solvent. In the solution polycondensation of PPD-T, the optimum mononomer concentration was about 7 wt % and, as an acid acceptor, pyridine was more effective than triethylamine.

고강도·고탄성율을 갖는 전방향족 polyamide를 저온축합중합법으로 중합하고 고중합도의 고분자를 합성하기 위한 주요인자를 고찰하였다. 계면축합중합의 경우, acid chloride를 약 5% 과량으로 사용할 때 고분자량의 poly(m-phenyleneisophthalamide) [MPD-Ⅰ]가 얻어졌으나 poly(p-phenyleneterephthalamide) [PPD-T]의 중합은 어려웠다. 용액축합중합의 경우에는, 극성 amide류의 용액에서 비교적 고중합도의 전방향족 polyamide가 얻어졌으며 PPD-T의 중합에 있어서는 단량체의 농도가 7wt%일 때가 가장 좋았으며 산포착제로서는 pyridine이 triethylamine보다 더 효과적이었다.

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