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Synthesis and characterization of poly benzoylpropionamides

✍ Scribed by S. Padma; V. Mahadevan; M. Srinivasan

Book ID
103076065
Publisher
Elsevier Science
Year
1982
Tongue
English
Weight
191 KB
Volume
18
Category
Article
ISSN
0014-3057

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✦ Synopsis

Linear polyamides having viscosities in the range of 0.12-0.41 dl/g have been prepared from bisbenzoyl propionic acids and aromatic diamines by low temperature solution polycondensation in 80-85". yield. Their solubility characteristics were studied in various solvents e.g. DMF, DMAC, HMPT, H2SO4. These polyamides are amorphous in nature; their densities range from 1.2 to 1.8 g/cm 3. Their thermal properties were examined by TGA and DTA. The two stage decomposition phenomenon observed in TGA is in agreement with the DTA results. The integral procedural decomposition temperatures were calculated and found to exceed 250 in almost all cases.

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## Abstract The synthesis and characterization of poly(LysAla~3~) are described. The polytetrapeptide is a model for short sequences found in proelastin, and is presumably involved in desmosine or isodesmosine cross‐link formation in the native protein. Poly(LysAla~3~) is found to possess a mixture