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http://nopr.niscpr.res.in/handle/123456789/32953| Title: | Synthesis and Characterization of Polyarylenepyromellitimides and Mechanical and Thermal Properties of Their Fibres |
| Authors: | Rao, B S Varma, Indra K |
| Keywords: | Fibre properties;Poly(arylenepyromellitimide) fibres;Polyimide fibres;Polypyromellitimides;Wet spinning |
| Issue Date: | Dec-1985 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Polypyromellitimides based on 4, 4'-diaminobenzanilide (DAB), 2, 5-bis (p-aminophenyl)-1, 3, 4-oxadiazole (ODZ), 4, 4'diaminodiphenyl ether (E) and bis(3-aminophenyl) methylphosphine oxide (DAP) were synthesized and characterized by IR spectroscopy. Fibres were spun from a DMF solution of the corresponding polyamide-acid by wet spinning and cyclodehydrated to polyimide by chemical means. The 'as-spun' fibres had low tenacity and modulus. Fibres based on DAB and ODZ diamines had higher modulus than those based on E. A decrease in the mechanical properties of fibres was observed by heat-ageing at 200°C for several hours or on UV irradiation. |
| Page(s): | 171-174 |
| ISSN: | 0975-1025 (Online); 0971-0426 (Print) |
| Appears in Collections: | IJFTR Vol.10(4) [December 1985] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJFTR 10(4) 171-174.pdf | 2.01 MB | Adobe PDF | View/Open |
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