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...
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| Format: | Article |
| Language: | English |
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De Gruyter
2013-02-01
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| Series: | High Temperature Materials and Processes |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/htmp-2012-0059 |
| _version_ | 1818390502051938304 |
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| author | Faghihi Khalil Hajibeygi Mohsen |
| author_facet | Faghihi Khalil Hajibeygi Mohsen |
| author_sort | Faghihi Khalil |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-14T04:58:38Z |
| format | Article |
| id | doaj.art-3177767c789d434c99f37619d02ee952 |
| institution | Directory Open Access Journal |
| issn | 0334-6455 2191-0324 |
| language | English |
| last_indexed | 2024-12-14T04:58:38Z |
| publishDate | 2013-02-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | High Temperature Materials and Processes |
| spelling | doaj.art-3177767c789d434c99f37619d02ee9522022-12-21T23:16:17ZengDe 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 |
| 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 |
| 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_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_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_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 |
| topic | heat resistant optically active poly(amide-imide) aromatic diamines |
| url | https://doi.org/10.1515/htmp-2012-0059 |
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