MICELLIZATION OF SODIUM DODECYL SULFATE IN POLYACRYLAMIDE AQUEOUS SOLUTION STUDIED  BY 1H NMR

Abstract

Abstract:

Using nuclear magnetic resonance spin-lattice relaxation time (T₁), spin-spin relaxation time (T₂), self-diffusion coefficient (D) and 2D NOESY techni
ques, the micellization process of sodium dodecyl sulfate (SDS) in polyacrylamide (PAM) aqueous solutions was studied. The molecular dynamic behaviors of SDS in the presence of PAM were compared with those in a PAM-free aqueous solution. These results suggest that: (1) the critical micelle concentration of SDS is lowered in the presence of PAM; (2) both the translational mobility and the chain plasticity of PAM decrease with the increase in SDS concentration; (3) the direct congregation between PAM and SDS can not be observed using the contour plot of 2D NOESY.

Key words: NMR, interaction, NOEY, sodium dodecyl sulfate (SDS), polyacrylamide (PAM)

CLC Number:

O482.53

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MICELLIZATION OF SODIUM DODECYL SULFATE IN POLYACRYLAMIDE AQUEOUS SOLUTION STUDIED BY ¹H NMR

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