Articles with "gemini" as a keyword



Synthesis and application of novel Gemini esterquats in fabric softeners: Role of spacer chain length on surfactant properties

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Published in 2024 at "Journal of Surfactants and Detergents"

DOI: 10.1002/jsde.12740

Abstract: Gemini surfactants are dimeric molecules having two monomeric units connected by a spacer. Gemini surfactants, owing to their molecular structure have better surfactant properties than other monomeric surfactants. Esterquat class gemini surfactants can be synthesized… read more here.

Keywords: gemini; surfactant properties; chain length; spacer ... See more keywords

Activity of gemini quaternary ammonium salts against microorganisms

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Published in 2018 at "Applied Microbiology and Biotechnology"

DOI: 10.1007/s00253-018-9523-2

Abstract: Quaternary ammonium salts (QAS), as the surface active compounds, are widely used in medicine and industry. Their common application is responsible for the development of microbial resistance to QAS. To overcome, this issue novel surfactants,… read more here.

Keywords: gemini; ammonium salts; gemini qas; quaternary ammonium ... See more keywords

Physicochemical properties and effect of organic and inorganic electrolytes on surface properties of C12 and C16 alcohol-based bis-sulfosuccinate anionic gemini surfactants

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Published in 2017 at "Colloid and Polymer Science"

DOI: 10.1007/s00396-017-4040-x

Abstract: Current communication reports the inorganic and organic salt behavior towards the surface active properties of lauryl and cetyl alcohol-based bis-sulfosuccinate anionic gemini surfactant (BSGSLA’s and BSGSCA’s) having different spacer and alkyl chain lengths by means… read more here.

Keywords: gemini; sulfosuccinate anionic; gemini surfactants; bis sulfosuccinate ... See more keywords

Self-assembly and rheological behavior of novel anionic and cationic gemini surfactants

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Published in 2020 at "Colloid and Polymer Science"

DOI: 10.1007/s00396-020-04743-z

Abstract: A series of novel carboxylate anionic gemini surfactants SL-n-SL (n = 3, 6, 10) were synthesized, and their rheological properties with a cationic gemini surfactant (12-3(OH)-12) were investigated in this paper. The surface-active properties of… read more here.

Keywords: novel; gemini; cationic gemini; self assembly ... See more keywords

Syntheses and properties of new photo-responsive gemini surfactants containing azobenzene group

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Published in 2021 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"

DOI: 10.1016/j.colsurfa.2021.127149

Abstract: Abstract A new asymmetric gemini type of photo-responsive cationic surfactants, N,N,N-(azobenzene-4-oxy-2-hydroxypropyl)dimethyl-N′,N′,N′-(alkyloxy-2-hydroxypropyl) dimethylethylene diammonium methylsulphate (GnAZ0DA, n = 4, 8, and 12), were synthesized. The surfactants had ammoniums in both head groups, two carbons as a spacer, azobenzene… read more here.

Keywords: properties new; gemini; photo responsive; syntheses properties ... See more keywords

Adsorption of tungstate using cationic gemini surfactant-modified montmorillonite: Influence of alkyl chain length

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Published in 2021 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"

DOI: 10.1016/j.colsurfa.2021.127484

Abstract: Abstract Influence of alkyl chain length on the adsorption characteristics of organic pollutants by conventional cationic surfactant-modified montmorillonite (Mt) has been well explored. However, applying different cationic gemini surfactants to modify Mt for the adsorption… read more here.

Keywords: chain length; adsorption; alkyl chain; gemini ... See more keywords

Design of a Salt-tolerant Gemini viscoelastic surfactant and the study of Construction of Wormlike Micelle structure in High-salinity aqueous environment

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Published in 2021 at "Colloids and Surfaces A: Physicochemical and Engineering Aspects"

DOI: 10.1016/j.colsurfa.2021.127653

Abstract: Abstract Herein, a zwitterionic Gemini VES (named VES-C) with double ultra-long hydrophobic tails was designed and synthesized which aimed to construct WLM net-structures in high-salinity aqueous solution. Due to the carboxylic group on the spacer,… read more here.

Keywords: structure high; environment; gemini; salinity ... See more keywords

Biotoxicity and tissue-specific oxidative stress induced by Gemini surfactant as a protocol on fingerlings of Cirrhinus mrigala (Ham.): An integrated experimental and theoretical methodology.

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Published in 2019 at "Ecotoxicology and environmental safety"

DOI: 10.1016/j.ecoenv.2019.109478

Abstract: An increasing concern for Gemini surfactants (GS) based on the class alkanediyl-α-ω-bis (dimethylalkylammonium bromide) has been reported in ecotoxicological researchbecause of their estrogenic properties causing an alarm to aquatic life. In this study, we analyzed… read more here.

Keywords: biotoxicity tissue; methodology; tissue specific; gemini ... See more keywords

The development of simple flow injection analysis tandem mass spectrometric methods for the cutaneous determination of peptide‐modified cationic gemini surfactants used as gene delivery vectors

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Published in 2018 at "Journal of Pharmaceutical and Biomedical Analysis"

DOI: 10.1016/j.jpba.2018.06.063

Abstract: Graphical abstract Figure. No caption available. HighlightsNovel FIA‐MS/MS methods were developed for peptide‐modified gemini surfactants.Extraction of gemini surfactants was systematically evaluated using five different liquid‐liquid extraction methods.Weak cationic exchange solid phase extraction was also used… read more here.

Keywords: peptide modified; gemini; extraction; analysis ... See more keywords

Interaction of ninhydrin with chromium-glycylglycine complex in the presence of dimeric gemini surfactants

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Published in 2018 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2017.11.172

Abstract: Abstract Studies of interaction between chromium-glycylglycine complex ([Cr(III)-Gly-Gly]2 +) and ninhydrin in 16-s-16 gemini surfactants were executed at various composition of substrates and temperatures. The effect of pH was also performed on the title reaction. The… read more here.

Keywords: gemini; presence; chromium glycylglycine; gemini surfactants ... See more keywords

Three tetrasiloxane-tailed cationic gemini surfactants: The effect of different spacer rigidity on surface properties and aggregation behaviors

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Published in 2018 at "Journal of Molecular Liquids"

DOI: 10.1016/j.molliq.2018.06.112

Abstract: Abstract Gemini cationic surfactant with tetrasiloxane-tailed has potential to improve performance and biocompatibility in a range of applications. With different rigidity spacers, structure effects on their self-assembling behavior and interface properties are obvious. Hence, it… read more here.

Keywords: gemini; spacer; surface; tetrasiloxane tailed ... See more keywords