Investigation of the Interactions of Polyvinylpyrrolidone with Mixtures of Anionic and Nonionic Surfactants or Anionic and Zwitterionic Surfactants by Pulsed Field Gradient NMR

Abstract

The interaction of polyvinylpyrrolidone (PVP) with an anionic surfactant (sodium dodecyl sulfate, SDS), a nonionic surfactant (pentaethylene glycol monodecyl ether, C 10 E 5 ), and a zwitterionic surfactant (lauryl amido propyl betaine, LAPB) has been investigated by means of pulsed gradient spin-echo NMR (FT-PGSE NMR), allowing self-diffusion coefficients to be determined. The results confirm the strong interaction prevailing in the PVP/SDS system, whereas no association has been observed in the PVP/C 10 E 5 and PVP/LAPB systems. Mixing PVP with two surfactants, namely SDS and C 10 E 5 or SDS and LAPB, results in the formation of ternary aggregates between the polymer and the mixed micelles.

Synergistic Behavior and Microstructure Transition in Mixture of Zwitterionic Surfactant, Anionic Surfactant, and Salts in Sorbitol/H2O Solvent: 1. Effect of Surfactant Compositions

“…Mixtures of zwitterionic and anionic surfactants often exhibit significant synergism in aqueous solutions, and are widely used in formulations of various personal and home care products because of their superior properties [1][2][3][4][5]. In the case of single ionic surfactant, the area per polar headgroup in the aggregates strongly depends on the nature of the headgroup, its counterions, and the strength of intermolecular interactions.…”

Effect of Additives on the Dynamic Behavior of Surfactants in Solution

“…Surface viscosity of SLS-CAPB mixture is low compared to other mixtures [9] and CAPB has a higherer diffusivity compared to SLS. [19] Stronger attractive interaction, lower surface viscosity, and higher diffusivity explain the faster adsorption and hence faster dynamics of SLS-CAPB mixtures compared to other surfactant-additive mixtures used for the study.…”

Interaction between poly(vinylimidazole) and sodium dodecyl sulfate: Binding and adsorption properties at the silica/water interface

“…This study was complemented by small-angle X-ray scattering and electron microscopy [20] and more recently by investigations on the dependence of viscosity [21] and elongational flow [22] of the solutions on the relative concentrations of PEO and SDS. Critical concentrations of a similar type were also identified from the self-diffusion coefficients determined by pulsed NMR in the system SDS/poly(vinylpyrrolidone) [23]. A thermodynamic model was presented by Nagarajan to describe the competition between the formation of free micelles and of the POE/SDS complex [24].…”