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Synthesis and properties of new poly(ether sulfone)amides

✍ Scribed by Francesco A. Bottino; Giovanna Di Pasquale; Nicoletta Leonardi; Antonino Pollicino

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 433 KB
Volume: 34
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(199605)34:7<1305::aid-pola17>3.0.co;2-d

No coin nor oath required. For personal study only.

✦ Synopsis

High molecular-weight aromatic polyamides were obtained from 1,5-and 2,6-bis-(4'-carboxy-4-phenylenoxy-sulfony1)naphthalene by direct polycondensation reaction in N-methyl-2pyrrolidone with various aromatic diamines, using triphenyl phosphite and pyridine as condensing agents. The polymers were characterized by elemental analysis, thermogravimetric analysis, differential scanning calorimetry, and infrared analysis. The polyamides, obtained in quantitative yield, possessed inherent viscosities in the range 0.42-1.70 dL/g, glass transition temperatures between 245-31OoC, and 10% weight loss temperatures in nitrogen and air above 435 and 424"C, respectively. Most of the polymers were soluble in aprotic solvents. The effect of the structure on properties, such as solubility, Tg, and thermal behavior, were also studied. 0

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