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Syntheses and properties of aromatic polyamides derived from 4,4′-oxydibenzoic acid and aromatic diamines

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Abstract

A series of aromatic polyamides were synthesized by direct polycondensation of 4,4′-oxydibenzoic acid with various aromatic diamines inN-methyl-2-pyrrolidone (NMP) solution containing dissolved calcium chloride, using triphenyl phosphite and pyridine as condensing agents. The resultant polyamides had inherent viscosities of 0.21-1.48 dL/g. Most of the polymers were organo-soluble and could be solution-cast into flexible and strong films. The glass transition temperatures (Tgs) of most polyamides could be determined with the help of differential scanning calorimetry (DSC) traces, which were recorded in the range of 170–275 °C. Thermogravi metric data of these polymers indicated that most of the polyamides showed no significant weight loss before 450 °C in either air or nitrogen atmospheres.

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Authors and Affiliations

  1. Department of Chemical Engineering, Tatung Institute of Technology, 40 Chungshan North Rd., Sec. 3, 104, Taipei, Taiwan, Republic of China

    Sheng-Huei Hsiao & Chou-Huan Yu

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  1. Sheng-Huei Hsiao
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  2. Chou-Huan Yu
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Hsiao, SH., Yu, CH. Syntheses and properties of aromatic polyamides derived from 4,4′-oxydibenzoic acid and aromatic diamines. J Polym Res 3, 239–245 (1996). https://doi.org/10.1007/BF01493494

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