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New optically active poly (amide-imide)s from N-trimellitylimido-l-amino acid and 1,2-bis [4-aminophenoxy] ethane in the main chain : synthesis and characterization
Joint Authors
Hajibeygi, Muhsin
Faghihi, Khalil
Nourbakhsh, Mahdi
Source
Journal of Saudi Chemical Society
Issue
Vol. 18, Issue 6 (31 Dec. 2014), pp.783-791, 9 p.
Publisher
Publication Date
2014-12-31
Country of Publication
Saudi Arabia
No. of Pages
9
Main Subjects
Topics
Abstract EN
Six new optically active poly(amide-imide)s (PAIs) with good inherent viscosities were synthesized from the direct polycondensation reaction of N-trimellitylimido-L-amino acids with 1,2-bis [4-aminophenoxy] ethane by direct polycondensation in a medium consisting of N-methyl-2-pyrrolidone (NMP) / triphenyl phosphite (TPP) / calcium chloride (CaCl2) / pyridine (py).
Diamine was synthesized by using a two-step reaction.
At first 1,2-bis [4-nitrophenoxy] ethane was prepared from the reaction of two equimolars 4-nitrophenol and one equimolar 1,2-dibromo ethane and the dinitro compound was reduced by using Pd / C.
Also N-trimellitylimido-L-amino acids were synthesized by the condensation reaction of trimellitic anhydride with two equimolars of various L-amino acids in acetic acid solution.
The polymerization reactions produced a series of optically active PAIs with a high yield and good inherent viscosity.
The resulted polymers were fully characterized by means of FTIR and 1H NMR spectroscopy, elemental analyses, inherent viscosity, specific rotation, solubility tests, thermogravimetric analysis (TGA), and a derivative of thermogravimetric (DTG) analysis.
American Psychological Association (APA)
Faghihi, Khalil& Nourbakhsh, Mahdi& Hajibeygi, Muhsin. 2014. New optically active poly (amide-imide)s from N-trimellitylimido-l-amino acid and 1,2-bis [4-aminophenoxy] ethane in the main chain : synthesis and characterization. Journal of Saudi Chemical Society،Vol. 18, no. 6, pp.783-791.
https://search.emarefa.net/detail/BIM-426817
Modern Language Association (MLA)
Faghihi, Khalil…[et al.]. New optically active poly (amide-imide)s from N-trimellitylimido-l-amino acid and 1,2-bis [4-aminophenoxy] ethane in the main chain : synthesis and characterization. Journal of Saudi Chemical Society Vol. 18, no. 6 (2014), pp.783-791.
https://search.emarefa.net/detail/BIM-426817
American Medical Association (AMA)
Faghihi, Khalil& Nourbakhsh, Mahdi& Hajibeygi, Muhsin. New optically active poly (amide-imide)s from N-trimellitylimido-l-amino acid and 1,2-bis [4-aminophenoxy] ethane in the main chain : synthesis and characterization. Journal of Saudi Chemical Society. 2014. Vol. 18, no. 6, pp.783-791.
https://search.emarefa.net/detail/BIM-426817
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 790-791
Record ID
BIM-426817