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Cationic Surfactants - Europe PMC

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Last Updated: 02 August 2022

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Imparting pH and temperature dual-responsiveness in a micellar solution of cationic surfactants by introducing a hydrotrope.

Nevertheless, the construction of such systems with self-assembly is both experimentally and theoretically, and it is still in the nascent stage. A novel dual-stimuli triggered wormlike micellar solution is made by mixing cationic surfactants 3-hexadecyloxy-3-hydroxypropyltrimonium bromide and sodium hydrogen phthalate. By adjusting the pH and temperature, a dual-sensitive fluid can be switched from a water-like state to a gel-like state. The variation in the flowing behavior is attributed to the microstructural transition between wormlike micelles, short cylindrical micelles, and spherical micelles, according to spherical micelles. In addition, dual-responsive behavior of the mixed solution is attributed to the fact that the pH and temperature are different. We hope that the new approach for manufacturing multi-stimuli-responsive materials that are capable of adapting to local environmental conditions.

Source link: https://europepmc.org/article/MED/35775594


Emulsion Stabilization by Cationic Lignin Surfactants Derived from Bioethanol Production and Kraft Pulping Processes.

Bitumen emulsions stabilized by biobased surfactants such as lignin are in keeping with the latest sustainable asphalt industry's new sustainable strategies, which include bitumen emulsions for reduced temperature asphalt technologies. The kraft sample results in a higher lignin content and lower molecular mass, according to a comprehensive chemical analysis. At pH = 10 and 13, tetraethylene pentamine and formaldehyde were used as reagents in three different stoichiometric molar ratios at three separate stoichiometric molar ratios. Among the synthetized surfactants, cationic kraft lignin has had the highest emulsification results, being used for the production of bitumen emulsions. In this regard, cationic kraft lignin has successfully emulsions of 60% bitumen in small surfactant ratios between 1/7/7 and 1/28/28, which was obtained at pH = 13 and reagent molar ratios between 1/7/7 and 1/28/28.

Source link: https://europepmc.org/article/MED/35890655


Enhancement of the Transdermal Delivery of Nonsteroidal Anti-inflammatory Drugs Using Liposomes Containing Cationic Surfactants.

For transdermal delivery of nonsteroidal anti-inflammatory drugs, different head group's structures were created. Transdermal penetration was tested for transdermal penetration by Liposomal diclofenac sodium and ketoprofen. respectively, 255 b1 2 and 186 b1 3 u00b1 3 pc2 were found that the maximum DS and KP penetration through the synthetic membranes is determined by values of 255 00b1 2 and 186 b1 3 / cm 2. For the first time, the influence of the surfactant head group on the chemistry of cationic liposomes was shown. In vivo, the Rat paw edema model was used to determine the anti-inflammatory properties of the IA-16/PC leader formulation in vivo. It was discovered that liposomal DS and KP are both highly absorbed at relieving rat paw edema. It should be noted that DS-loaded hybrid liposomes had the highest therapeutic efficiency compared to conventional vesicles.

Source link: https://europepmc.org/article/MED/35910111


Enhancement of the Transdermal Delivery of Nonsteroidal Anti-inflammatory Drugs Using Liposomes Containing Cationic Surfactants

For transdermal administration of nonsteroidal anti-inflammatory drugs, two different head group's formulated hybrid liposomes based on cationic amphiphiles with different cellular structures were designed. Transdermal penetration of Liposomal diclofenac sodium and ketoprofen was tested for transdermal penetration. The maximum DS and KP penetration through the synthetic membranes was found by measurements of 255 b1 2 and 186 b3-3, respectively, according to drug diffusion experiments for 48 hours. For the first time, the influence of the surfactant head group on the chemistry of cationic liposomes was displayed. In vivo, the rat paw edema model was used to determine the anti-inflammatory effects of the IA-16/PC leader formulation in vivo. It was found that liposomal DS and KP are both safe for relieving rat paw edema. DS-loaded hybrid liposomes had the highest therapeutic efficiencies in comparison to conventional vesicles, according to it should be noted.

Source link: https://europepmc.org/article/MED/PMC9330268


Cationic Surfactants as Disinfectants against SARS-CoV-2.

An increase in the length and number of hydrophobic tails, as well as the presence of a benzene ring in the surfactant molecule, all contributed to the virucidal activity of the surfactant against SARS-CoV-2. Didodecyldimethylammonium bromide was the most effective as a disinfectant among the cationic surfactants tested, with a 50% effective concentration equal to 0. 016 mM.

Source link: https://europepmc.org/article/MED/35743090


Appraisal of synthetic cationic Gemini surfactants as highly efficient inhibitors for carbon steel in the acidization of oil and gas wells: an experimental and computational approach.

By chemical, electrochemical, and theoretical studies such as DFT and MDS approaches, new cationic Gemini surfactant molecules were synthesized and tested as anticorrosive materials for carbon steel in a 1 million HCl solution. According to PDP reports, the CGS molecule behaves as a mixed inhibitor. The EIS results were presented by a more readable representation of the experimental findings than a double-layer capacitance circuit in which a constant phase element rather than a double-layer capacitance was used to create an equivalent circuit. The CGS molecule adheres to Langmuir isotherm as it is chemically adsorbed onto the surface of CS.

Source link: https://europepmc.org/article/MED/35755599


Hyaluronan interactions with cationic surfactants - Insights from fluorescence resonance energy transfer and anisotropy techniques.

By the time-resolved measurement of fluorescence resonance energy transfer using perylene and fluorescein as probes, Interactions of hyaluronan micelles created by cationic surfactants had been investigated. Both surfactants had similar FRET efficiency values, but test results for the probe pair's binding were lower for Septonex micelles than in the case of CTAB. All results showed that cationic micelles bind to hyaluronan, resulting in a pearl necklace structure with micelles of smaller size compared to pure surfactant.

Source link: https://europepmc.org/article/MED/35568147

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions