Influence of the Hydro/Fluorocarbon Chain Length on CMC and HLB of Surface-Active Nonionic Surfactants Containing Polyethylene Glycol Groups

Khalfallah, Ali; Kriaa, A.; Hedhli, A.

doi:10.3139/113.110560

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…It means that their collective contributions due to both hydrophilic and hydrophobic interactions to interact with the SDS-stabilized Au NPs remain the same despite the presence of diverse molecular structures. Its origin could be best related to the closeness among the hydrophile–lipophile balance (HLB) , values, that is, CTAB (7.6) ≈ 12-4-12 (7.7) > 16-3-16 (6.7). On the other hand, the HLB value for 16- n -16 decreases with the increase in n of 16-2-16 (6.8) > 16-3-16 (6.7) > 16-4-16 (6.6) > 16-5-16 (6.4) > 16-6-16 (6.3).…”

Section: Resultsmentioning

confidence: 99%

Distinguishing Nanoparticle–Nanoparticle Interactions between Gold and Silver Nanoparticles Controlled by Gemini Surfactants: Stability of Nanocolloids

2021

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Nanoparticle–nanoparticle (NP–NP) interactions were studied by choosing oppositely charged colloidal suspensions of Au and Ag NPs. For this purpose, sodium dodecyl sulfate-stabilized Au NPs were titrated with a series of Gemini surfactant (i.e., 12-n-12 and 16-n-16)-stabilized Ag NPs to demonstrate the effect of head group and hydrophobic tail modifications on the Au–Ag NP interactions. The purpose of selecting Au and Ag NPs was to monitor and differentiate among their individual colloidal behaviors in the course of NP–NP interactions by simultaneously conducting UV–visible, size, and ζ potential measurements. All colloidal properties demonstrated a significant change in the event of Au–Ag NP complex formation during NP–NP interactions. Nanomaterial analysis indicated a high degree of inter-particle fusion among Au and Ag NPs with a high Au–Ag mole ratio for strongly interacting Au–Ag NPs systems but a low Au–Ag mole ratio for the systems where interactions were screened by modifying the molecular structure of Gemini surfactants. Results concluded that it is possible to screen or delay the NP–NP interactions even for strongly interacting systems simply by incorporating a non-polar spacer in the head group region or by increasing the length of hydrocarbon chains of the Gemini surfactant, thus producing colloidal suspensions with a longer shelf life and better industrial applicability.

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Section: Resultsmentioning

confidence: 99%

Distinguishing Nanoparticle–Nanoparticle Interactions between Gold and Silver Nanoparticles Controlled by Gemini Surfactants: Stability of Nanocolloids

2021

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Synthesis and Determination of Critical Micelle Concentration of Betainthioates Surfactants

Khalfallah¹,

Mazzouzi²

2020

J Surfact & Detergents

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Two series of monotailed and bolaphiles surfactants having quaternary ammonium bromide polar head have been synthesized and characterized. The critical micelle concentration (CMC) of the synthesized cationic surfactants was determined by conductimetric method. According to CMC values, the increase in alkyl chain length leads to a decrease in CMC and the bola‐type exhibits a higher CMC than their counterpart's monotailed.

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Rigid polyurethane foam with durable hydrophobicity and flame retardancy endowed by novel functional surfactants

Wang,

Li,

et al. 2024

Construction and Building Materials

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Influence of the Hydro/Fluorocarbon Chain Length on CMC and HLB of Surface-Active Nonionic Surfactants Containing Polyethylene Glycol Groups

Cited by 4 publications

References 20 publications

Distinguishing Nanoparticle–Nanoparticle Interactions between Gold and Silver Nanoparticles Controlled by Gemini Surfactants: Stability of Nanocolloids

Distinguishing Nanoparticle–Nanoparticle Interactions between Gold and Silver Nanoparticles Controlled by Gemini Surfactants: Stability of Nanocolloids

Synthesis and Determination of Critical Micelle Concentration of Betainthioates Surfactants

Rigid polyurethane foam with durable hydrophobicity and flame retardancy endowed by novel functional surfactants

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