Abstract
A novel of cross-linkable copolymerization poly (Arlene ether sulfonic) end-capped with phthalonitrile had been firstly synthesized by nucleophile substitution reaction. The effects of crosslink reaction on thermal property of PES films were studied. The 1H NMR spectroscopy spectra have confirmed that the phthalonitrile group was connected to PES chain terminal. The fracture morphology was observed by SEM, the results suggested that the crosslink reaction of the films occurred during the heat treatment. DSC, TGA and gel content testing indicated the thermal stability getting better after high temperature treatment. The Tag and T5% reach 221.7 co. and 546.6 co. after the PES films treatment at 340 co. for 6 h.
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