N-bromo-poly(styrene-co-divinylbenzene) sulphonamide metal salts. Synthesis and basic properties |
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Authors: | Romuald Bogoczek,El bieta Kocio ek-Balawejder |
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Affiliation: | Romuald Bogoczek,Elżbieta Kociołek-Balawejder |
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Abstract: | Macromolecular pendant group N-monobromosulphonamide metal salts ? SO2NBr?M+ having a macroporous styrene-divinylbenzene matrix structure have been obtained by two methods: (a) by the action of aqueous metal hypobromites on the appropriate macromolecular pendant group sulphonamide, and (b) by the action of an aqueous metal bromide on the appropriate macromolecular N-chlorosulphonamide metal salt. In each case the sodium salt product was obtained with a 100% functional yield and it contained 2.1 mmol.g?1 ? SO2NBr?Na+ groups, i. e., 4.2 meq · g?1 of active bromine. The stability of the resin was investigated in the range 20–100°C in the dry state as well as in aqueous media. A thermoanalysis (TG, DTG, and DTA curves) was carried out up to 1000°C and its course was interpreted. The resin has brominating, oxidative, microbiocidic, and ionexchanging properties. It reacts in a reversible way: after the loss of the active bromine, it can be reactivated again. |
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