Synthesis and Characterization of a New poly (-Amino Acid) Derived from Polysalicylaldehyde
Publish place: سومین کنفرانس بین المللی علوم و مهندسی
Publish Year: 1395
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICESCON03_372
تاریخ نمایه سازی: 16 شهریور 1395
Abstract:
Due to biological and physicochemical properties of poly (-amino acid)s interest in synthesis of their novel derivatives was recently increased. As a new and simple approach, an aromatic poly (-amino acid), poly (AA), was prepared from poly salicylaldehyde (PSA) as a precursor which -amino acid groups formed as pendant groups on the PSA framework. PSA was prepared by a poly condensation reaction, after treatment of salicylaldehyde with chloromethylene group. Transformation of PSA to poly (AA) was done through Strecker synthesis with a cyanide salt. The final step includes hydrolysis of nitrile groups to carboxylic acid through a simple one step reaction. Poly (AA) and PSA were characterized by FTIR, 1H NMR instruments and elemental analysis. Both of PSA and poly (AA) had the melting point above 400 C. Also the number-average molecular weight (Mn) of PSA was 2190 that measured by Warly titration method where polymer was dissolved in pyridine/acetic anhydride mixture and titrated with NaOH 0.5 N as a titrant
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Authors
Milad Kazemnejadi
Department of Chemistry, College of Science, Shiraz University, Shiraz ۷۱۴۵۴, Iran
Alireza Sardarian
Department of Chemistry, College of Science, Shiraz University, Shiraz ۷۱۴۵۴, Iran
Hassan Eslahi
Department of Chemistry, College of Science, Shiraz University, Shiraz ۷۱۴۵۴, Iran
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