Detergents

Landeck, Lilla; Baden, Lynn A.; John, Swen Malte

doi:10.1007/978-3-319-68617-2_75

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…When the quaternized nitrogen atom group is pendant to the diamide backbone, the active groups may have had more access to the cell membrane. The same behavior has been observed in other large QACs known as “esterquats”, compounds that are commonly used as emulsifiers in cosmetics and detergents . For example, an N -hexyl, N -methyl N , N -diundecanoyl methyl ester QAC, which may be considered as possessing a pendant C 8 alkyl chain, was reported to exhibit a potent antimicrobial effect.…”

Section: Resultssupporting

confidence: 58%

“…The same behavior has been observed in other large QACs known as "esterquats", compounds that are commonly used as emulsifiers in cosmetics and detergents. 27 For example, an N-hexyl,N-methyl N,N-diundecanoyl methyl ester QAC, which may be considered as possessing a pendant C 8 alkyl chain, was reported to exhibit a potent antimicrobial effect. This positioning may have resulted in facile access to the cell membrane by the "pendant" alkyl chain.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

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Synthesis and Evaluation of Antimicrobial Biobased Waxes as Coating Materials

Metzcar

Gutierrez

Ownley

et al. 2023

ACS Appl. Bio Mater.

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The objective of this study was to synthesize and evaluate the efficacy of antimicrobial waxes to be used as both physical and biological protection to perishable fruits and vegetables. The existing wax materials used in postharvest coating applications do not provide this antimicrobial functionality. One class of such waxes was obtained by covalently linking quaternary ammonium compounds (QACs) featuring alkyl, benzyl, and stearyl ester hydrophobic side groups to the terminal position of a bromo stearyl ester. A second class was obtained by linking these QACs to the pendant hydroxyl group of an aliphatic diamide made of 12-hydroxystearic acid, stearic acid, and ethylene diamine. In total, six distinct structures having three different QAC groups were synthesized. Compounds containing QACs with C 8 alkyl groups exhibited potent inhibition toward the growth of both bacteria and fungi. Notably, the complete inhibition of Penicillium italicum and Geotrichum candidum, two fungi detrimental to the postharvest quality of fruits, as well as the complete destruction of viable cells for Gram-positive and Gram-negative bacteria was observed when these organisms were incubated in contact with QAC waxes or dispersed in an aqueous system at a concentration of 1.0 mM. Comparatively, benzalkonium chloride with an alkyl chain length of 10 carbon can completely inhibit Staphylococcus aureus at a concentration of 1.44 mM. The properties of the attached hydrophobic groups appeared to exert a strong influence on antimicrobial activity presumably due to differences in molecular orientation, size, and differences among microbial cellular structures.

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Section: Resultssupporting

confidence: 58%

Section: ■ Results and Discussionmentioning

confidence: 99%

Synthesis and Evaluation of Antimicrobial Biobased Waxes as Coating Materials

Metzcar

Gutierrez

Ownley

et al. 2023

ACS Appl. Bio Mater.

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“…The concentration of DS ions is taken close to the critical micelle concentration (CMC) because of the relevance of CMC in applications like detergency. 1,44,45 The number of DS ions is 5, 9, and 17 for the simulation box having sides 10, 12, and 15 nm, respectively. The number of sodium ions is such that negative charges on PSS and DS ions are compensated.…”

Section: Computational Detailsmentioning

confidence: 99%

Studying the Effect of Cross-Linking and Sulfonation on the Calcium-Binding Ability of Polystyrene Sulfonate in the Presence of Dodecyl Sulfate

Gore

Rane

2023

Ind. Eng. Chem. Res.

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Calcium ions in hard water deteriorate the cleaning performance of detergents by interacting with the anionic surfactants and inducing their precipitation. Polystyrene sulfonate is a common component of cation-exchange resins that adsorb hard ions such as Ca+2 and Mg+2, which adhere to the sulfonate groups. Therefore, understanding the calcium-binding ability of polystyrene sulfonate in the presence of dodecyl sulfate can help in designing novel water-softening agents for applications related to detergency. Studying the association between polystyrene sulfonate and dodecyl sulfate via calcium ion bridges is also important. Since resins contain cross-linked polystyrene sulfonate, degrees of cross-linking and sulfonation are two important parameters. We use molecular dynamics simulations to study the effect of the above parameters on the calcium-binding ability of isotactic polystyrene sulfonate in the presence of dodecyl sulfate. We observe negligible dependence of calcium-ion binding of polystyrene sulfonate on the degrees of cross-linking and sulfonation. The formation of calcium ion bridges between cross-linked polystyrene sulfonate and dodecyl sulfate is strongly affected by the degree of sulfonation. Such bridges are observed more for the intermediate degrees of sulfonation. This is because, at a very low degree of sulfonation, dodecyl sulfate ions align closer to the cross-linking aromatic groups than the sulfonated ones. On the other hand, at high degrees of sulfonation, stronger electrostatic repulsion disfavors the proximity between dodecyl sulfate and polystyrene sulfonate.

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Surface Cleaning of Oil Contaminants Using Bulk Nanobubbles

Hansen,

Ouyang,

Cha

et al. 2024

ChemSusChem

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The removal of oil from solid surfaces, such as textiles and plates, remains a challenge due to the strong binding affinity of the oil. Conventional methods for surface cleaning often require surfactants and mechanical abrasion to enhance the cleaning process. However, in excess, these can pose adverse effects on the environment and to the material. This study investigated how bulk nanobubble water can clean oil microdroplets deposited on surfaces like glass coverslips and dishes. Microscopy imaging and further image analysis clearly revealed that these microdroplets detached from both hydrophobic and hydrophilic surfaces when washed with bulk nanobubble water within a fluidic microchannel. Oil contaminant cleaning was also conducted in water as mobile phase to mimic the circumstances that occur in a dishwasher and washing machine. Cleaning on a larger scale also proved very successful in the removal of oil from a porcelain bowl. These results indicate that nanobubble water can easily remove oil contaminants from glass and porcelain surfaces without the assistance of surfactants. This is in stark contrast to negligible results obtained with a control solution without nanobubbles. This study indicates that nanobubble technology is an innovative, low‐cost, eco‐friendly approach for oil removal, demonstrating its potential for broad practical applications.

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Detergents

Cited by 4 publications

References 22 publications

Synthesis and Evaluation of Antimicrobial Biobased Waxes as Coating Materials

Synthesis and Evaluation of Antimicrobial Biobased Waxes as Coating Materials

Studying the Effect of Cross-Linking and Sulfonation on the Calcium-Binding Ability of Polystyrene Sulfonate in the Presence of Dodecyl Sulfate

Surface Cleaning of Oil Contaminants Using Bulk Nanobubbles

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