Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and Properties

Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and Properties

Six new heat resistant and optically active poly(amide-imide)s 5a–f were prepared by the direct polycondensation reaction of N,N′-(4,4′-pyromellitoyl)-bis-L-phenyl acetic acid 3 with various different diamines 4a–f in a medium consisting of triphenyl phosphite, N-methyl-2-pyrrolidone, pyridine and c...

Full description

Bibliographic Details
Main Authors: Faghihi Khalil, Hajibeygi Mohsen
Format: Article
Language:English
Published: De Gruyter 2013-02-01
Series:High Temperature Materials and Processes
Subjects:
heat resistant
optically active
poly(amide-imide)
aromatic diamines
Online Access:https://doi.org/10.1515/htmp-2012-0059
id doaj-3177767c789d434c99f37619d02ee952
record_format Article
spelling doaj-3177767c789d434c99f37619d02ee9522021-09-06T19:19:51ZengDe GruyterHigh Temperature Materials and Processes0334-64552191-03242013-02-01321515710.1515/htmp-2012-0059Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and PropertiesFaghihi KhalilHajibeygi Mohsen0Department of Chemistry, Varamin Pishva Branch, Islamic Azad University, Varamin, IranSix new heat resistant and optically active poly(amide-imide)s 5a–f were prepared by the direct polycondensation reaction of N,N′-(4,4′-pyromellitoyl)-bis-L-phenyl acetic acid 3 with various different diamines 4a–f in a medium consisting of triphenyl phosphite, N-methyl-2-pyrrolidone, pyridine and calcium chloride. These polymers were obtained in high yields and had inherent viscosities between 0.35–0.50 dL/g. The resulting polymers were characterized by viscosity measurements, thermal gravimetric analysis (TGA and DTG), differential scanning calorimeter (DSC), solubility test, specific rotation, FT-IR and 1H NMR spectroscopy. N,N′-(4,4′-pyromellitoyl)-bis-L-phenyl acetic acid 3 was prepared by an one-stop reaction of pyromellitic anhydride 1 with L-phenyl acetic acid 3 in acetic acid solution in quantitative yield.https://doi.org/10.1515/htmp-2012-0059heat resistantoptically activepoly(amide-imide)aromatic diamines
collection DOAJ
language English
format Article
sources DOAJ
author Faghihi Khalil
Hajibeygi Mohsen
spellingShingle Faghihi Khalil
Hajibeygi Mohsen
Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and Properties
High Temperature Materials and Processes
heat resistant
optically active
poly(amide-imide)
aromatic diamines
author_facet Faghihi Khalil
Hajibeygi Mohsen
author_sort Faghihi Khalil
title Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and Properties
title_short Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and Properties
title_full Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and Properties
title_fullStr Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and Properties
title_full_unstemmed Heat Resistant Poly(amide-imide)s Derived from N,N′-(4,4′-Pyromellitoyl)-bis-L-phenyl Acetic Acid and Aromatic Diamines: Synthesis and Properties
title_sort heat resistant poly(amide-imide)s derived from n,n′-(4,4′-pyromellitoyl)-bis-l-phenyl acetic acid and aromatic diamines: synthesis and properties
publisher De Gruyter
series High Temperature Materials and Processes
issn 0334-6455
2191-0324
publishDate 2013-02-01
description Six new heat resistant and optically active poly(amide-imide)s 5a–f were prepared by the direct polycondensation reaction of N,N′-(4,4′-pyromellitoyl)-bis-L-phenyl acetic acid 3 with various different diamines 4a–f in a medium consisting of triphenyl phosphite, N-methyl-2-pyrrolidone, pyridine and calcium chloride. These polymers were obtained in high yields and had inherent viscosities between 0.35–0.50 dL/g. The resulting polymers were characterized by viscosity measurements, thermal gravimetric analysis (TGA and DTG), differential scanning calorimeter (DSC), solubility test, specific rotation, FT-IR and 1H NMR spectroscopy. N,N′-(4,4′-pyromellitoyl)-bis-L-phenyl acetic acid 3 was prepared by an one-stop reaction of pyromellitic anhydride 1 with L-phenyl acetic acid 3 in acetic acid solution in quantitative yield.
topic heat resistant
optically active
poly(amide-imide)
aromatic diamines
url https://doi.org/10.1515/htmp-2012-0059
work_keys_str_mv AT faghihikhalil heatresistantpolyamideimidesderivedfromnn44pyromellitoylbislphenylaceticacidandaromaticdiaminessynthesisandproperties
AT hajibeygimohsen heatresistantpolyamideimidesderivedfromnn44pyromellitoylbislphenylaceticacidandaromaticdiaminessynthesisandproperties
_version_ 1717777705022259200

Similar Items