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

Negm, Nabel A.; Mohamed, A. S.; Ahmed, Sahar M.; El-Raouf, Mohamed Abd

doi:10.1007/s11743-014-1665-3

Cited by 23 publications

(8 citation statements)

References 16 publications

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“…8 Furthermore, these structures are also used as model systems for the study of intermolecular interactions and hydrophobic aggregation phenomena. 9 The major challenge of recent works in this research field is to understand the nature of the interactions involved in the polymer/surfactant association (hydrophobic, electrostatic, hydrogen bond, and van der Waals); in the organization of surfactant into polymer (monomers or aggregates); in the thermodynamic stability; and in the rheological properties. 10,11 In recent years, research involving surfactant ionic liquids has drawn attention to their self-assembly capacity in aqueous solution.…”

Section: ■ Introductionmentioning

confidence: 99%

“…The suitable properties of the polymer solutions may be achieved by the addition of a surfactant. , Polymer/surfactant systems are of great interest in colloid science, since their mixtures lead to the formation of complex structures that are employed in several industrial products such as cosmetics, pharmaceutical formulations, and food additives . Furthermore, these structures are also used as model systems for the study of intermolecular interactions and hydrophobic aggregation phenomena …”

Section: Introductionmentioning

confidence: 99%

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Thermodynamic Insights into the Binding of Mono- and Dicationic Imidazolium Surfactant Ionic Liquids with Methylcellulose in the Diluted Regime

et al. 2017

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Alkylimidazolium salts are an important class of ionic liquids (ILs) due to their self-assembly capacity when in solution and due to their potential applications in chemistry and materials science. Therefore, detailed knowledge of the physicochemical properties of this class of ILs and their mixtures with natural polymers is highly desired. This work describes the interactions between a homologous series of mono- (CMIMBr) and dicationic imidazolium (C(MIM)Br) ILs with cellulose ethers in aqueous medium. The effects of the alkyl chain length (n = 10, 12, 14, and 16), type, and concentration range of ILs (below and above their cmc) on the binding to methylcellulose (MC) were evaluated. The thermodynamic parameters showed that the interactions are favored by the increase of the IL hydrocarbon chain length, and that the binding of monocationic ILs to MC is driven by entropy. The monocationic ILs bind more effectively on the methoxyl group of MC when compared to dicationic ILs, and this outcome may be rationalized by considering the structural difference between the conventional (CMIMBr) and the bolaform (C(MIM)Br) surfactant ILs. The CMIMBr interacts more strongly with hydroxypropylcellulose when compared to methylcellulose, indicating that the strength of the interaction also depends on the hydrophobicity of the cellulose ethers. Our findings highlight that several parameters should be taken into account when designing new complex formulations.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermodynamic Insights into the Binding of Mono- and Dicationic Imidazolium Surfactant Ionic Liquids with Methylcellulose in the Diluted Regime

et al. 2017

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“…Negm et al [113] studied the surface properties of the individual cationic surfactants, S-alkyl isothiouronium bromide (n = 10, 12, 14), and their mixture with the nonionic polymer, PVA, and have proposed that the mixed systems have improved surface properties over the individual cationic surfactants (Fig. 3).…”

Section: Polymer-amphiphile Interactionsmentioning

confidence: 99%

Polymer-Amphiphile Interactions: An Overview

Panda

Kamil

2017

Eurasian Chem. Tech. J.

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Interactions between the polymers and amphiphiles in aqueous solutions have generated considerable interest among researchers because of the widespread applications, relatively complex behavior and improved physicochemical properties of the mixtures. Numerous studies on the surfactant-polymer systems have been carried out in recent years and the number of scientific reports has considerably increased. Various applications of polymers in different areas and many works concerning the amphiphiles are being published every year. Usually, the mixed systems containing polymers and amphiphiles show solution properties different from those of individual solutions due to interaction between the components. The present review article mainly focuses on the behaviour of polymers in aqueous solutions, in the absence or presence of amphiphiles, such as surfactants, drugs, etc. It also summarizes effect of the nature of amphiphiles on aggregation properties of polymers in aqueous solution, and interaction of conventional as well as gemini surfactants with polymers.

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“…Surfactants are being one of the most usage and powerful class of materials used in the chemical industry [33,34]. Polymeric surfactants may be used as an alternative to classical surfactants in many applications including detergents, coatings, inks, pharmaceuticals, personal care products, and advanced materials such as Nanocomposites [35,36]. Polymerizable surfactants have reactive functionalities that can exist in the hydrophobic tail or the polar head group [37,38].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and evaluation of new cationic polymeric surfactant based on N-phthalimidomethyl methacrylate

et al. 2021

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In our previous work N-phthalimidomethyl methacrylate (NPMMA) monomer was prepared through the reaction of Nhydroxymethyl phthalimide with methacrylic acid in the presence of N, N-dicyclohexylcarbodiimide (DCCI) as a condensing agent. Then a new series of copolymers containing imidazole have been synthesized through the reaction of NPMMA monomer with 1-vinylimidazole (VIM) in the presence of benzoyl peroxide as initiator. The copolymer composition was determined by 1 H NMR spectroscopy and the values of monomer reactivity ratio (r1= 0.756, r2= 1.033, and r1r2= 0.781) were calculated through Fineman Ross and Kelen-Tüdös methods. Conversion of copolymers to surfactants was achieved through quaternization of the imidazole nitrogen with dimethyl sulphate. The chemical structure of the produced monomer, copolymers, co-polymeric surfactants was confirmed by spectroscopic tools. The surface properties included surface tension, foaming power, emulsion stability, critical micelle concentration (CMC) have been measured in aqueous medium by traditional procedures. Also the different air/ water interface parameters including effectiveness (πcmc), efficiency (Pc20), maximum surface excess (Γmax) and minimum surface area (Amin) were also recorded. Moreover, the biodegradability for these cationic surfactants has been investigated and their D % was ranged from 67 to 100 %.

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

Cited by 23 publications

References 16 publications

Thermodynamic Insights into the Binding of Mono- and Dicationic Imidazolium Surfactant Ionic Liquids with Methylcellulose in the Diluted Regime

Thermodynamic Insights into the Binding of Mono- and Dicationic Imidazolium Surfactant Ionic Liquids with Methylcellulose in the Diluted Regime

Polymer-Amphiphile Interactions: An Overview

Synthesis and evaluation of new cationic polymeric surfactant based on N-phthalimidomethyl methacrylate

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