INTERACTIONS OF WATER-SOLUBLE POLYMERS WITH SODIUM DODECYL SULFATE IN AQUEOUS SOLUTION STUDIED BY 1H NMR

Abstract

Abstract:

Aqueous solutions of sodium dodecyl sulfate (SDS) at various concentrations in 2 g/L polyvinylpyrrolidone (PVP) and 2 g/L polyvinyl alcohol (PVA), respectively, were studied by ¹H NMR. Two-dimensional nuclear Overhauser enhancement spectroscopy (NOESY) experiments show that SDS starts to micellize at a concentration of 2.5 mmol/L, with PVP solubilized in the interior of the micelles. At
SDS concentrations lower than 2.5 mmol/L, no significant interaction could be detected. Spin-spin relaxation measurements support this conclusion. The interaction between PVA and SDS was hardly detected.

Key words: ¹H NMR, polyvinylpyrrolidone, polyvinyl alcohol, sodium dodecyl sulfate, interaction

CLC Number:

O641

FENG Yang, FANG Xiao-Wen, MAO Shi-Zhen, ZHAO Sui, YUAN Han-Zhen, YU Jia-Yong, DU You-Ru. INTERACTIONS OF WATER-SOLUBLE POLYMERS WITH SODIUM DODECYL SULFATE IN AQUEOUS SOLUTION STUDIED BY ¹H NMR[J]. Chinese Journal of Magnetic Resonance, 2004, 21(1): 49-55.

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INTERACTIONS OF WATER-SOLUBLE POLYMERS WITH SODIUM DODECYL SULFATE IN AQUEOUS SOLUTION STUDIED BY ¹H NMR

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