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Title: Characterization of novel modified amorphous poly(ether sulphone)s
Authors: Maes, C
Devaux, Jacques
Legras, Roger
Parsons, Iw
Mcgrail, Pt
Issue Date: Dec-1994
Publisher: John wiley & sons inc
Series Title: Journal of polymer science part a-polymer chemistry vol:32 issue:16 pages:3171-3182
Abstract: New high-temperature amorphous polymers with chlorine, amine, and maleimide chain-ends have been synthesized by nucleophilic polycondensation and fully characterized by C-13-NMR,H-1-NMR, and potentiometric titration. From chain-end determination, number average molecular masses were calculated. It was confirmed that transetherification during the synthesis led to a randomized polymer of the monomer residues. For nominally amine-ended polymers obtained by addition of m-aminophenol at the end of the synthesis, a small amount of hydroxyl chain-ends was observed. This is ascribed also to transetherification. Complete reaction of the amine chain-ends with maleic anhydride was demonstrated. Reaction of hydroxyl chain-ends with acetic anhydride was also observed. The thermal stability of these different polymers was investigated; lower thermal stability was observed for amine and maleimide-ended polymers. By two different methods, a T-g around 270 degrees C was determined for these novel amorphous aromatic polymers. (C) 1994 John Wiley & Sons, Inc.
ISSN: 0887-624X
Publication status: published
KU Leuven publication type: DI
Appears in Collections:Department of Materials Engineering - miscellaneous

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