Interactions of polyethers with a cationic surfactant

Benkhira, A.; Lachhab, T.; Bagassi, M.; François, Jeanne

doi:10.1016/s0032-3861(99)00390-0

Cited by 6 publications

(4 citation statements)

References 19 publications

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“…In addition, the other surface properties of the synthesized cationic surfactants were gradually changed by their hydrophobic chain length, as reported in the previous work [13]. Figures 2,3,and 4 show the variation of surface tensions of PVA-S-alkyl isothiouronium bromide surfactant complexes at 25°C. The CMC values of the different mixed systems are listed in Table 2.…”

Section: Surface Activitysupporting

confidence: 60%

“…Surfactant-polymer systems are important in various industrial and technological fields such as cosmetics and pharmaceutical products, paints and coatings, adhesives, and many other applications [1,2]. An enormous amount of work has been done on the characterization and properties of surfactant and polymer solutions because of the broad range of applications of surfactants and polymers [3][4][5]. The aggregation of surfactant molecules in aqueous solution depends on hydrophobic, hydrophilic and ionic interactions.…”

Section: Introductionmentioning

confidence: 99%

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Polymer‐Cationic Surfactant Interaction: 1. Surface and Physicochemical Properties of Polyvinyl Alcohol (PVA)‐S‐Alkyl Isothiouronium Bromide Surfactant Mixed Systems

Negm

Mohamed

Ahmed

et al. 2015

J Surfact & Detergents

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Surface properties of polyvinyl alcohol (nonionic polymer) and three synthesized cationic surfactants, namely, S-alkyl isothiouronium bromide at different mole fractions of 1:9, 3:7, 5:5, 7:3, and 9:1, were investigated. The values of the surface parameters were discussed according to the type of interaction between the cationic surfactant and type of polymer studied. The S-alkyl isothiouronium bromide surfactant molecules are positively charged molecules, and the PVA chains contain hydroxyl groups that are partially negatively charged centers. The comparison between the surface properties of the individual cationic surfactants and their mixture with PVA polymer showed that the mixed systems have some advantages over the individual cationic surfactants.

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Section: Surface Activitysupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

Polymer‐Cationic Surfactant Interaction: 1. Surface and Physicochemical Properties of Polyvinyl Alcohol (PVA)‐S‐Alkyl Isothiouronium Bromide Surfactant Mixed Systems

Negm

Mohamed

Ahmed

et al. 2015

J Surfact & Detergents

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“…It is well-known that polyethers and surfactants strongly interact in aqueous solution. It is the case for anionic surfactant and POE. ,,,− The surfactant is fixed on polymer under the form of micelles rather as isolated molecules to form a “pearl necklace”, and the aggregation numbers are similar or slightly lower than they are without polymer. Consequently, the phase diagram of the SDS−PPO system should be comparable to those described for other polymer−surfactant mixture, with three domains: the first one where SDS remains free in solution, the second one which correspond to SDS at cmc in equilibrium with SDS−PPO complexes, and the third one where PPO is saturated and free SDS micelles are formed.…”

Section: Resultsmentioning

confidence: 99%

Study of Sodium Dodecyl Sulfate−Poly(propylene oxide) Methacrylate Mixed Micelles

et al. 2004

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Sodium dodecyl sulfate (SDS)-poly(propylene oxide) methacrylate (PPOMA) (of molecular weight Mw ) 434 g‚mol -1 ) mixtures have been studied using conductimetry, static light scattering, fluorescence spectroscopy, and 1 H NMR. It has been shown that SDS and PPOMA form mixed micelles, and SDS and PPOMA aggregation numbers, Nag SDS and Nag PPOMA, have been determined. Total aggregation numbers of the micelles (Nag SDS + Nag PPOMA) and those of SDS decrease upon increasing the weight ratio R ) PPOMA/SDS. Localization of PPOMA inside the mixed micelles is considered (i) using 1 H NMR to localize the methacrylate function at the hydrophobic core-water interface and (ii) by studying the SDS-PPO micellar system (whose Mw ) 400 g‚mol -1 ). Both methods have indicated that the PPO chain of the macromonomer is localized at the SDS micelle surface. Models based on the theorical prediction of the critical micellar concentration of mixed micelles and structural model of swollen micelles are used to confirm the particular structure proposed for the SDS-PPOMA system, i.e., the micelle hydrophobic core is primarily composed of the C 12 chains of the sodium dodecyl sulfate, the hydrophobic core-water interface is made up of the SDS polar heads as well as methacrylate functions of the PPOMA, the PPO chains of the macromonomer are adsorbed preferentially on the surface, i.e., on the polar heads of the SDS.

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“…At very low concentration, the sorption enthalpies increase from phenol to dichlorophenol in the same order as hydrophobicity. It means that the interaction between the confined surfactant and the organic molecule in the mesostructure depends on their hydrophobicity as observed in solution for various systems (23,24). This interaction will be compared afterward with that in solution.…”

Section: Fig 4 Sorption Enthalpies Of Hydrophobic Molecules In Mscmentioning

confidence: 99%

Sorption of Hydrophobic Molecules by Organic/Inorganic Mesostructures

Hanna

Beurroies

Denoyel

et al. 2002

Journal of Colloid and Interface Science

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Interactions of polyethers with a cationic surfactant

Cited by 6 publications

References 19 publications

Polymer‐Cationic Surfactant Interaction: 1. Surface and Physicochemical Properties of Polyvinyl Alcohol (PVA)‐S‐Alkyl Isothiouronium Bromide Surfactant Mixed Systems

Polymer‐Cationic Surfactant Interaction: 1. Surface and Physicochemical Properties of Polyvinyl Alcohol (PVA)‐S‐Alkyl Isothiouronium Bromide Surfactant Mixed Systems

Study of Sodium Dodecyl Sulfate−Poly(propylene oxide) Methacrylate Mixed Micelles

Sorption of Hydrophobic Molecules by Organic/Inorganic Mesostructures

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