Synthesis and characterization of pyridine and anthracene containing bismaleimides,bisnadimides and polyaspartimides |
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Authors: | N Amutha M Sarojadevi |
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Affiliation: | (1) Department of Chemistry, Anna University, Chennai, 600 025, India |
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Abstract: | Three different novel diamines containing pyridine and anthracene moiety were prepared and subsequently converted into bismaleimides
(BMI) and bisnadimides (BNI) and their structure was confirmed by elemental analysis, FT-IR, 1H-NMR and 13C-NMR techniques. Chain extension of bismaleimides and bisnadimides was accomplished by incorporating various ether or ester
groups. Owing to pendant anthracene moiety, pyridine unit and flexible linkages, the bismaleimides and bisnadimides were found
to possess an excellent balance of properties; solubility and thermal stability and the curing behaviour was investigated
by differential scanning calorimeter. In addition, a series of polyaspartimides containing anthracene and pyridine unit was
prepared by the polyaddition of bismaleimides with various diamines via a Michael-type addition. The thermal stability of
bismaleimides, bisnadimides and polyaspartimides was evaluated by thermo gravimetric analysis. All the polyaspartimides are
soluble in many organic solvents and exhibit T
g in the range of 189–242 °C and 10% weight loss (T
10) takes place in the range of 389–487 °C in N2. |
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Keywords: | Pyridine moiety Anthracene Ether and ester linkages Thermal properties Molecular weight |
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