Synthesis and study of some newer polyamides for semipermeable membrane

✍ Scribed by J. S. Shukla; S. K. Dixit

• Publisher: John Wiley and Sons
• Year: 1992
• Tongue: English
• Weight: 346 KB
• Volume: 44
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1992.070440810

✦ Synopsis

A series of novel polyamides was prepared by low temperature solution polycondensation of N-(p/rn-aminobenzoyl aminoacetyl) -N'-(4/3-aminobenzoyl) hydrazine with different diacid chlorides in dry N,N-Dimethylacetamide (DMAC) . The properties of the polyamides for membrane processing were studied with the help of infrared spectra, inherent viscosity, differential thermal, and thermogravimetric analysis. The inherent viscosities were measured in concentrated sulfuric acid at 25 k 5°C and were in the range of 0.35-0.89 dL/g. The thermogravimetric data in air indicate that the initial decomposition temperature was in the range of 175-200°C. The polymer melt temperature ( T , ) and glass transition temperature (T,) were in the range of 230-450°C and 153.3-300°C, respectively.