Molekulargewichtsbestimmung durch Gelchromatographie von Oligoimidophosphorsäureamiden |
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| Authors: | Manfred Wlke Werner Tpelmann Hans-Albert Lehmann |
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| Institution: | Manfred Wölke,Werner Töpelmann,Hans-Albert Lehmann |
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| Abstract: | Determination of Molecular Weights by Gel Chromatography of Oligoimidoamides of Phosphoric Acid. Oligoimidoamides of phosphoric acid were eluted with nonionic water on a Sephadex LH-20 column. The measured distribution coefficient of the oligoimidoamides of phosphoric acid was independent of sample concentration and pH of the eluent. Andrews equation was obeyed: a linear relation exist between elution volume and logarithm of molecular weight both cyclic and acyclic oligoimidoamides of phosphoric acid. |
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