Oligoimides of N,iV',-4,4'-bismaleimidodiphenyl ether (DDEBM) and 4,4'-diaminodiphenylmethane (DDM) were prepared by the Michael addition reaction. The synthesized oligoimides (DDEBM-DDM) were characterized for their molecular structure by elemental analysis and IR spectroscopy. The number-average m
Amine-terminated polysulfone as modifier for epoxy resin
β Scribed by D. Ratna; M. Patri; B.C. Chakraborty; P.C. Deb
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 166 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0021-8995
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β¦ Synopsis
The synthesis of carboxyl-terminated poly(ethylene glycol adipate) (CTPA) and amine-terminated poly(amide sulfone) (ATPS) based on the CTPA and 4,4 -diaminodiphenyl sulfone (DDS) is described. The products were characterized by IR and 13 C-NMR spectroscopic analysis, nonaqueous titration, viscosity measurement, and solubility characteristics. The developed ATPS was incorporated as a modifier into the epoxy matrix and its effect was studied by DSC and DMTA. It was found that ATPS forms a compatible blend with epoxy and imparts flexibility to the epoxy matrix.
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