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http://nopr.niscpr.res.in/handle/123456789/29798| Title: | Phosphorus containing nadicimide oligomers: Synthesis and characterization |
| Authors: | Alama, Sarfaraz Jayakumari, V G Kandpala, L D Varma, I K |
| Issue Date: | Aug-1996 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | The paper describes the synthesis and characterization of several nadicimide oligomers derived from tris [3-(4-aminobenzamido) phenyl] phosphine oxide (TABP), pyromellitic dianhydride (PMDA)/3,3',4,4'-benzophenone tracarboxylic acid dianhydride (BTDA). Structural characterization of the resins has been done by elemental analysis, IR and 1H NMR spectroscopy Curing behaviour of these oligomers depends on the structure. Exothermic transitions due to curing have been observed in the temperature range of 250 ± 20 to 295 ± 25°C. Isothermal curing of the resins has been done at 340°C for 1h in air atmosphere. The cured resins are stable up to 300°C and decompose in a single step above this temperature. |
| Page(s): | 158-162 |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Appears in Collections: | IJEMS Vol.03(4) [August 1996] |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| IJEMS 3(4) 158-162.pdf | 339.87 kB | Adobe PDF | View/Open |
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