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Journal articles on the topic 'Surfactant Interaction'

Author: Grafiati

Published: 7 September 2023

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1

Cheng, Chao, and Shi-Yong Ran. "Interaction between DNA and Trimethyl-Ammonium Bromides with Different Alkyl Chain Lengths." Scientific World Journal 2014 (2014): 1–9. http://dx.doi.org/10.1155/2014/863049.

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The interaction betweenλ—DNA and cationic surfactants with varying alkyl chain lengths was investigated. By dynamic light scattering method, the trimethyl-ammonium bromides-DNA complex formation was shown to be dependent on the length of the surfactant’s alkyl chain. For surfactants with sufficient long alkyl chain (CTAB, TTAB, DTAB), the compacted particles exist with a size of ~60–110 nm at low surfactant concentrations. In contrast, high concentration of surfactants leads to aggregates with increased sizes. Atomic force microscope scanning also supports the above observation. Zeta potential

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2

Taba, Paulina, Russell F. Howe, and Graine Moran. "FTIR AND NMR STUDIES OF ADSORBED CETHYLTRIMETHYLAMMONIUM CHLORIDE IN MCM-41 MATERIALS." Indonesian Journal of Chemistry 8, no. 1 (2010): 1–6. http://dx.doi.org/10.22146/ijc.21639.

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The high use of surface-active agents (surfactants) by industry and households today leads to environmental pollution, therefore treatments are required to remove such substances from the environment. One of the important and widely used methods for removal of substances from solution is adsorption. In this research, MCM-41 and its modified product of MCM41-TMCS were used to adsorb cationic surfactants, cethyltrimethylammonium chloride, CTAC. FTIR and NMR methods were used to study the interaction between the surfactants and the adsorbents. MCM-41 was synthesized hydrothermally at 100 oC and i

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3

Yang, Jia, and Rajinder Pal. "Investigation of Surfactant-Polymer Interactions Using Rheology and Surface Tension Measurements." Polymers 12, no. 10 (2020): 2302. http://dx.doi.org/10.3390/polym12102302.

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The interactions between surfactants and a drag-reducing polymer were investigated at a low polymer concentration of 500 ppm, using measurements of the rheology and surface activity of surfactant-polymer solutions. A well-known drag-reducing polymer (anionic sodium carboxymethyl cellulose) and five different surfactants (two anionic, two non-ionic, and one zwitterionic) were selected for the interaction studies. The surfactant-polymer solutions were shear thinning in nature, and they followed the power law model. The interaction between the surfactant and polymer had a strong effect on the con

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4

Lai, Chiu-Chun, Kuo-Shien Huang, Po-Wei Su, Chang-Mou Wu, and Ching-Nan Huang. "Interactions of modified Gemini surfactants: Interactions with direct dyes and dyeing properties in cotton fabrics." Modern Physics Letters B 33, no. 14n15 (2019): 1940002. http://dx.doi.org/10.1142/s0217984919400025.

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This study investigated dye–surfactant interactions between a series of modified Gemini surfactants and commercial direct dyes in aqueous solution and their corresponding effects on cotton fabric dyeing. A surface tension meter was also used to measure surface activities of compounds containing electrolyte under conditions similar to those in dyeing processes. The surface tension measurements showed lower than normal surface tension in surfactant solutions containing electrolyte. From the UV-Vis spectra, the isosbestic point indicated that dye–surfactant complexes had formed and existed as hyd

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5

Ostos, Francisco José, José Antonio Lebrón, María Luisa Moyá, et al. "Potentiometric Study of Carbon Nanotube/Surfactant Interactions by Ion-Selective Electrodes. Driving Forces in the Adsorption and Dispersion Processes." International Journal of Molecular Sciences 22, no. 2 (2021): 826. http://dx.doi.org/10.3390/ijms22020826.

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The interaction (adsorption process) of commercial ionic surfactants with non-functionalized and functionalized carbon nanotubes (CNTs) has been studied by potentiometric measurements based on the use of ion-selective electrodes. The goal of this work was to investigate the role of the CNTs’ charge and structure in the CNT/surfactant interactions. Non-functionalized single- (SWCNT) and multi-walled carbon nanotubes (MWCNT), and amine functionalized SWCNT were used. The influence of the surfactant architecture on the CNT/surfactant interactions was also studied. Surfactants with different charg

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6

LIU, HAO-YANG, XIAN-WU ZOU, YIN-QUAN YUAN, and ZHUN-ZHI JIN. "EFFECTS OF INTERACTION WITH SOLVENT AND CHAIN CONFORMATION OF SURFACTANTS ON EMULSIFICATION." Modern Physics Letters B 15, no. 24 (2001): 1061–68. http://dx.doi.org/10.1142/s0217984901002853.

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The details of the emulsification process has been investigated by discontinuous molecular dynamic simulation. The surfactants help to bring about emulsification. The emulsification can be divided crudely into two stages: splitting and uniting process. The splitting and uniting of oil droplets occurs in this position, where surfactants at the interface is rather scarce. The effects of the conformation of surfactant chain and the strength of surfactant–water and surfactant–oil interactions on emulsification were also studied. The surfactants with longer tail and stronger surfactant–water and su

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7

Hosseinzadeh, Reza, Mohammad Gheshlagi, Rahele Tahmasebi, and Farnaz Hojjati. "Spectrophotometric study of interaction and solubilization of procaine hydrochloride in micellar systems." Open Chemistry 7, no. 1 (2009): 90–95. http://dx.doi.org/10.2478/s11532-008-0078-4.

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AbstractThe interaction of Procaine hydrochloride (PC) with cationic, anionic and non-ionic surfactants; cetyltrimethylammonium bromide (CTAB), sodium dodecyl sulfate (SDS) and triton X-100, were investigated. The effect of ionic and non-ionic micelles on solubilization of Procaine in aqueous micellar solution of SDS, CTAB and triton X-100 were studied at pH 6.8 and 29°C using absorption spectrophotometry. By using pseudo-phase model, the partition coefficient between the bulk water and micelles, Kx, was calculated. The results showed that the micelles of CTAB enhanced the solubility of Procai

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8

Tazhibayeva, Sagdat, Kuanyshbek Musabekov, Zhenis Kusainova, Ardak Sapieva, and Nurlan Musabekov. "Complex Formation of Polyacrylic Acid with Surfactants of Different Hydrophobicity." Applied Mechanics and Materials 752-753 (April 2015): 212–16. http://dx.doi.org/10.4028/www.scientific.net/amm.752-753.212.

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Complex formation processes of polyelectrolytes with surfactant ions are close model to protein - lipid interactions in living organisms. Furthermore, polymer – surfactant complexes are widely used as stabilizers of industrial dispersions and structurants of soil. When using the polymer-surfactant complexes the hydrophilic-lipophilic balance has the great importance. The interaction of polyacrylic acid with alkylammonium salts of different hydrophobicity: cetyltrimethylammonium bromide, dilaurildimethylammonium bromide and dioctadecyldimethylammonium chloride was studied by potentiometry, spec

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9

Reddy, M. C. Somasekhara, S. M. Sarvar Jahan, K. Sridevi, and G. V. Subba Reddy. "Investigations on Natural Surfactant obtained from Soap-Nuts through Spectrophotometric Interactions with Congo Red and Comparison with Commercial Surfactants." Asian Journal of Chemistry 31, no. 4 (2019): 907–16. http://dx.doi.org/10.14233/ajchem.2019.21849.

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A natural surfactant (NS) of plant-base was obtained from the fruit pericarp of soapnuts by using a simple and economical method. The interaction of this natural surfactant with direct dye, anionic dye, Congo red (CR) was studied spectrophotometrically in sub-micellar and micelle concentration range in aqueous solution. These interactions (CR-NS) were compared with that of CR-CTAB (cationic surfactant-cetyl trimethylammonium bromide, CTAB), CR-SDS (anionic surfactant-sodium dodecyl sulphate, SDS) and CR-TX 100 (neutral surfactant - Triton X-100, TX 100) and were useful to understand the nature

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10

Nazarova, Anastasia, Arthur Khannanov, Artur Boldyrev, Luidmila Yakimova, and Ivan Stoikov. "Self-Assembling Systems Based on Pillar[5]arenes and Surfactants for Encapsulation of Diagnostic Dye DAPI." International Journal of Molecular Sciences 22, no. 11 (2021): 6038. http://dx.doi.org/10.3390/ijms22116038.

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In this paper, we report the development of the novel self-assembling systems based on oppositely charged Pillar[5]arenes and surfactants for encapsulation of diagnostic dye DAPI. For this purpose, the aggregation behavior of synthesized macrocycles and surfactants in the presence of Pillar[5]arenes functionalized by carboxy and ammonium terminal groups was studied. It has been demonstrated that by varying the molar ratio in Pillar[5]arene-surfactant systems, it is possible to obtain various types of supramolecular systems: host–guest complexes at equimolar ratio of Pillar[5]arene-surfactant a

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11

Acharya, Shveta, and Arun Kumar Sharma. "Spectrometric, Thermodynamic, pH Metric and Viscometric Studies on the Binding of TEALS as Surfactant with Albumin as Biopolymer." Current Physical Chemistry 10, no. 1 (2020): 47–64. http://dx.doi.org/10.2174/1877946809666190913182152.

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Background:: Since the interactions of small anions with protein are very important in their transportation and distribution processes in biological systems, it is helpful to study these interactions to understand the nature of the transportation and distribution processes. Therefore, it is aimed to study the interaction of albumin with surfactant molecule by different physical methods. Objective:: Present work attempts to work on assessing the structure, characterization of the surfactants as TEALS (tri-ethanalamine lauryl sulphate) binding sites, with albumin involved in various process of l

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12

Perron, Gérald, Josée Francoeur, Jacques E. Desnoyers, and Jan C. T. Kwak. "Heat capacities and volumes in aqueous polymer and polymer–surfactant solutions." Canadian Journal of Chemistry 65, no. 5 (1987): 990–95. http://dx.doi.org/10.1139/v87-169.

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The apparent molar volumes and heat capacities of aqueous mixtures of neutral polymers and ionic surfactants were measured at 25 °C. The polymers chosen were poly(vinylpyrrolidone) (PVP) and poly(ethyleneoxide) (PEO) and the surfactants were the C8, C10, and C12 homologs of sodium alkylsulfates and the C10, C12, and C16 homologs of alkyltrimethylammonium bromides. The polymer–surfactant interactions depend on the nature of both components and on the chain length of the surfactant. The thermodynamic properties of the cationic surfactants are essentially the same in the absence and presence of p

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13

Akanno, Andrew, Eduardo Guzmán, Laura Fernández-Peña, Francisco Ortega, and Ramón G. Rubio. "Surfactant-Like Behavior for the Adsorption of Mixtures of a Polycation and Two Different Zwitterionic Surfactants at the Water/Vapor Interface." Molecules 24, no. 19 (2019): 3442. http://dx.doi.org/10.3390/molecules24193442.

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The bulk and interfacial properties of solutions formed by a polycation (i.e., poly(diallyl-dimethylammonium chloride), PDADMAC) and two different zwitterionic surfactants (i.e., coco-betaine (CB) and cocoamidopropyl-betaine (CAPB)) have been studied. The bulk aggregation of the polyelectrolyte and the two surfactants was analyzed by turbidity and electrophoretic mobility measurements, and the adsorption of the solutions at the fluid interface was studied by surface tension and interfacial dilational rheology measurements. Evidence of polymer–surfactant complex formation in bulk was only found

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14

Mohanty, Sagarika, Jublee Jasmine, and Suparna Mukherji. "Practical Considerations and Challenges Involved in Surfactant Enhanced Bioremediation of Oil." BioMed Research International 2013 (2013): 1–16. http://dx.doi.org/10.1155/2013/328608.

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Surfactant enhanced bioremediation (SEB) of oil is an approach adopted to overcome the bioavailability constraints encountered in biotransformation of nonaqueous phase liquid (NAPL) pollutants. Fuel oils containn-alkanes and other aliphatic hydrocarbons, monoaromatics, and polynuclear aromatic hydrocarbons (PAHs). Although hydrocarbon degrading cultures are abundant in nature, complete biodegradation of oil is rarely achieved even under favorable environmental conditions due to the structural complexity of oil and culture specificities. Moreover, the interaction among cultures in a consortium,

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15

Grotberg, J. B., D. Halpern, and O. E. Jensen. "Interaction of exogenous and endogenous surfactant: spreading-rate effects." Journal of Applied Physiology 78, no. 2 (1995): 750–56. http://dx.doi.org/10.1152/jappl.1995.78.2.750.

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The spreading rate of an exogenous surfactant monolayer due to surface tension gradients is examined by using our previously reported theoretical analysis, with particular attention given to the effects of endogenous surfactant. It is found that the presence of an endogenous surfactant reduces the spreading rate of exogenous surfactant and that, in certain circumstances, the spreading may be halted. A recently published paper (F. F. Espinosa, A. H. Shapiro, J. J. Fredberg, and R. D. Kamm. J. Appl. Physiol. 75: 2028–2039, 1993) reaches the opposite conclusion about the effect of endogenous surf

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16

Bezuglaya, Elena, Nikolay Lyapunov, Valentyn Chebanov, and Oleksii Liapunov. "Study of the formation of micelles and their structure by the spin probe method." ScienceRise: Pharmaceutical Science, no. 4 (38) (August 31, 2022): 4–18. http://dx.doi.org/10.15587/2519-4852.2022.263054.

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The aim. To study the surfactant solutions depending on the type and concentration of surfactants as well as their interaction with some excipients by spin probe method. Materials and methods. Solutions of ionic and nonionic surfactants containing 4 spin probes differing in molecular structure and solubility were studied. Electronic paramagnetic resonance (EPR) spectra were obtained and their type and parameters were determined. The critical micelle concentration (CMC) was determined from the surface tension isotherm, and the rheological parameters were studied by rotational viscometry.&

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17

Moater, Elena Irina, Cristiana Radulescu, and Ionica Ionita. "The Spectrophotometric and Tensiometric Study of Interaction Between Nonionic Surfactants with Acid Dye." Revista de Chimie 68, no. 5 (2017): 1010–13. http://dx.doi.org/10.37358/rc.17.5.5600.

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The study of the interaction between nonionic surfactants and acid dyes is very important in clarifying the mechanism of wool dyeing and colors preservation and also for the washing conditions determination. This paper presents the spectrophotometric and tensiometric data of the interaction between the alkyl polyglucosides surfactants class with new synthesized dye, from the class of azoic dyes derived from 3H-aza-1-oxa-2H-tioxo-5,8-fenalendisulfonic acid. A multiplicity of transitions is observed, when the surface tension of aqueous solutions of nonionic surfactant (APG) in the presence of th

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18

Zhang, Zhi-guo, and Hong Yin. "Interaction of nonionic surfactant AEO9with ionic surfactants." Journal of Zhejiang University SCIENCE 6B, no. 6 (2005): 597–601. http://dx.doi.org/10.1631/jzus.2005.b0597.

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19

Abdel-Rahem, Rami A., Sana Niaz, Abdelmnim M. Altwaiq, Muayad Esaifan, Mohammad Bassam Al Bitar, and Abeer Al Bawab. "Synergistic interaction between sodium dodecyl benzene sulfonate (SDBS) and N,N-dimethyldodecan-1-amine oxide (DDAO) and their adsorption onto activated charcoal and Jordanian natural clay." Tenside Surfactants Detergents 59, no. 2 (2022): 144–58. http://dx.doi.org/10.1515/tsd-2021-2395.

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Abstract Solutions of sodium dodecyl benzene sulfonate (SDBS) and N,N-dimethyldodecan-1-amine oxide (DDAO) with mole fractions of 0.00, 0.25, 0.50, 0.75 and 1.00 were prepared and their surface tension was measured as a function of total surfactant concentration. The critical micelle concentration (CMC) values of these mixed solutions were also determined. The minimum area occupied by a surfactant molecule at air/water interface was calculated for single and binary surfactant mixtures. A pronounced synergistic interaction between SDBS and DDAO was detected. The surface tension and CMC-values o

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20

Oszwałdowski, Sławomir, Katarzyna Zawistowska, Laura Grigsby, and Kenneth Roberts. "Capillary electrophoretic separation and characterizations of CdSe quantum dots." Open Chemistry 8, no. 4 (2010): 806–19. http://dx.doi.org/10.2478/s11532-010-0052-9.

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AbstractWe have developed a capillary electrophoresis method to characterize the QD surface ligand interactions with various surfactant systems. The method was demonstrated with 2–5 nm CdSe nanoparticles surface-passivated with trioctylphosphine oxide (TOPO). Water solubility was accomplished by surfactant-assisted phase transfer via an oil-in-water microemulsion using either cationic, anionic, or non-ionic surfactants. Interaction between the QD surface ligand (TOPO) and the alkyl chain of the surfactant molecule produces a complex and dynamic surface coating that can be characterized through

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21

Azum, Naved, Malik Abdul Rub, Anish Khan, Maha M. Alotaibi, Abdullah M. Asiri, and Mohammed M. Rahman. "Mixed Micellization, Thermodynamic and Adsorption Behavior of Tetracaine Hydrochloride in the Presence of Cationic Gemini/Conventional Surfactants." Gels 8, no. 2 (2022): 128. http://dx.doi.org/10.3390/gels8020128.

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In this approach, tensiometry and UV-visible techniques are used to determine the effect of cationic gemini and conventional surfactants on tetracaine hydrochloride (TCH), an anesthetic drug. We have estimated micellar, interfacial, and energetic constraints. To gain a deep understanding of their mixed association behavior, the outputs were examined using different theoretical models. The critical micelle concentration for single and mixed amphiphiles was estimated. The cmc values of mixed amphiphiles were found between the individual amphiphiles due to strong attractive interaction (synergism

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22

Ghosh, Soumen, Arpan Mal, Tanushree Chakraborty, Gobinda Chandra De, and Daniel Gerrard Marangoni. "Interaction of a Cationic Surfactant with an Oppositely Charged Polymer." Journal of Surface Science and Technology 32, no. 3-4 (2017): 107. http://dx.doi.org/10.18311/jsst/2016/14746.

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The interactions between the cationic surfactant Dodecyltrimethylammonium Bromide (DTAB) and anionic polymer sodium carboxymethyl cellulose (Na-CMC) in aqueous medium were studied at 300K over different concentrations of Na-CMC by tensiometry, conductometry, viscometry, turbidimetry and fluorimetry. Aggregation of surfactant was attained in two steps, the first being the monomeric adsorption of surfactants on anionic sites of the polymer saturating at lower concentrations of surfactant and the second one being the formation of micelles by surfactants at higher concentrations. Mainly, two types

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23

Seng, Lee Yeh, and Berna Hascakir. "Role of Intermolecular Forces on Surfactant-Steam Performance into Heavy Oil Reservoirs." SPE Journal 26, no. 04 (2021): 2318–23. http://dx.doi.org/10.2118/201513-pa.

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Summary This study investigates the role of polar fractions of heavy oil in the surfactant-steamflooding process. Performance analyses of this process were done by examination of the dipole-dipole and ion-ion interactions between the polar head group of surfactants and the charged polar fraction of crude oil, namely, asphaltenes. Surfactants are designed to reduce the interfacial tension (IFT) between two immiscible fluids (such as oil and water) and effectively used for oil recovery. They reduce the IFT by aligning themselves at the interface of these two immiscible fluids; this way, their po

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24

Friedl, Julian David, Christian Steinbring, Sergey Zaichik, Nguyet-Minh Nguyen Le, and Andreas Bernkop-Schnürch. "Cellular uptake of self-emulsifying drug-delivery systems: polyethylene glycol versus polyglycerol surface." Nanomedicine 15, no. 19 (2020): 1829–41. http://dx.doi.org/10.2217/nnm-2020-0127.

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Aim: Comparison of the impact of polyethylene glycol (PEG) and polyglycerol (PG) surface decoration on self-emulsifying drug delivery system (SEDDS)-membrane interaction and cellular uptake. Materials & methods: PEG-, PEG/PG- and PG-SEDDS were assessed regarding their self-emulsifying properties, surface charge, bile salt fusibility, cellular uptake and interaction with endosome-mimicking membranes. Results: SEDDS exhibited droplet sizes between 150 and 175 nm, a narrow size distribution and self-emulsified within 7 min. Higher PEG-surfactant amounts in SEDDS resulted in charge-shielding a

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25

Harrison, S. Kent, and Sandra M. Thomas. "Interaction of Surfactants and Reaction Media on Photolysis of Chlorimuron and Metsulfuron." Weed Science 38, no. 6 (1990): 620–24. http://dx.doi.org/10.1017/s0043174500051596.

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Laboratory experiments were conducted to determine the effects of nonionic surfactants and reaction media (water, glass, and corn leaf residue) on photolysis and subsequent phytotoxicity of chlorimuron and metsulfuron residues. Oxysorbic and octoxynol enhanced rates of chlorimuron and metsulfuron photolysis in aqueous solution and on glass slides compared to controls with no surfactant. Enhanced photolysis of chlorimuron by surfactants was greatest on glass, where 93 and 89% loss occurred after 48 h exposure to ultraviolet light in the presence of oxysorbic and octoxynol, respectively, compare

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26

Song, Yongbo, Yulan Niu, Hongyan Zheng, and Ying Yao. "Interaction of Bis-Guanidinium Acetates Surfactants with Bovine Serum Albumin Evaluated by Spectroscopy." Tenside Surfactants Detergents 58, no. 3 (2021): 187–94. http://dx.doi.org/10.1515/tsd-2020-2283.

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Abstract The interactions between cocopropane bis-guanidinium acetates, tallowpropane bis-guanidinium acetates with bovine serum albumin (BSA) in an aqueous solution were studied by fluorescence and circular dichroic spectroscopy measurements. The aim of the study was to elucidate the influence of the hydrophilic group and the length of the hydrophobic chain of these surfactants on the mechanism of binding to BSA. The results revealed that for both surfactants, at low concentrations, the Stern–Volmer plots had an upward curvature and at high concentrations, the quenching efficiency was decreas

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Uznanski, P., J. Pecherz, and M. Kryszewski. "Photophysical studies of hydrophobically functionalized polyionene systems in aqueous solutions." Canadian Journal of Chemistry 73, no. 11 (1995): 2041–46. http://dx.doi.org/10.1139/v95-252.

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Complexes of polyionene and anionic dyes and surfactant were prepared by exchange reaction of counterions in the parent polymer. Fluorescence studies were conducted to observe some characteristic behaviour of these complexes in water Polyionenes with aromatic hydrocarbons adopt an open conformation and there is no evidence for interpolymer interactions. On the contrary, polyionenes with long aliphatic counterions easily form microdomains in aqueous solution due to hydrophobic interaction as evidenced by an increase in excimer emission. Microdomains have an interpolymer nature, as confirmed by

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Opanasenko, O. N., N. P. Krutko, O. L. Zhigalova, O. V. Luksha, and T. A. Kozinets. "Adsorption capacity of binary surfactants mixtures at solution/air and solution/mineral material interfaces." Proceedings of the National Academy of Sciences of Belarus, Chemical Series 54, no. 4 (2019): 399–405. http://dx.doi.org/10.29235/1561-8331-2018-54-4-399-405.

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The adsorption capacity on the interphase surfaces of solution / air and solution / mineral material of binary mixtures of anionic (alkylbenzenesulfonic acid and its sodium salt (ABSCNa)) and nonionic surfactants (Tween-80) was studied. It has been established that the adsorption interaction of binary mixtures of surfactants with the surface of quartz and dolomite is affected by the presence of potential-determining ions that activate the surface of mineral materials, the charge and hydration of the anionic antagonists, the nature of the intermolecular interactions between the surfactant-compo

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Klovak, Viktoriia, Sergey Kulichenko, and Serhii Lelyushok. "Matching Effects in the Interaction of Ionic Surfactants with Fluorescent Reagents in Micellar Solutions of Triton X-100." Methods and Objects of Chemical Analysis 16, no. 3 (2021): 117–26. http://dx.doi.org/10.17721/moca.2021.117-126.

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The influence of cationic and anionic surfactant solutions on the character of the fluorescence spectra of reagents of different charge and hydrophobicity in aqueous solutions of nonionic surfactant Triton X-100 has been studied. An increase in the fluorescence intensity and a shift in the position of the fluorescence maximum with increasing hydrophobicity of reagents and ionic surfactants have been shown. The analytical signal of the surfactant is further amplified in the proximity of the charge values of the reagent and the counterion of the surfactant. The non-monotonic nature of the hydrop

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Walters, Russel M., Guangru Mao, Euen T. Gunn, and Sidney Hornby. "Cleansing Formulations That Respect Skin Barrier Integrity." Dermatology Research and Practice 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/495917.

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Surfactants in skin cleansers interact with the skin in several manners. In addition to the desired benefit of providing skin hygiene, surfactants also extract skin components during cleansing and remain in the stratum corneum (SC) after rinsing. These side effects disrupt SC structure and degrade its barrier properties. Recent applications of vibrational spectroscopy and two-photon microscopy in skin research have provided molecular-level information to facilitate our understanding of the interaction between skin and surfactant. In the arena of commercial skin cleansers, technologies have bee

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McLachlan, Aleisha A., and D. Gerrard Marangoni. "1D and 2D NMR investigations of the interaction between oppositely charged polymers and surfactants." Canadian Journal of Chemistry 88, no. 2 (2010): 124–34. http://dx.doi.org/10.1139/v09-039.

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Proton chemical shifts and two-dimensional COSY and NOE spectroscopy (NOESY) experiments have been used to examine the interaction of various oppositely charged surfactant and polyelectrolyte systems, namely, the cationic surfactant dodecyltrimethyammonium bromide (DTAB) and a series of alkanediyl-α,ω-bis(alkyldimethylammonium bromide) surfactants (Gem 12-s-12, where s is the length of the methylene spacer group) with the anionic polyelectrolyte poly(styrene sulfonate) or PSS. In all cases, we observe substantial aromatic-solute-induced chemical shifts (ASIS) in the surfactant peaks of the pol

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Zheng, Jiaojiao, Jing Zhang, Fengniu Lu, et al. "Visualization of Polymer–Surfactant Interaction by Dual-Emissive Gold Nanocluster Labeling." Biosensors 12, no. 9 (2022): 686. http://dx.doi.org/10.3390/bios12090686.

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Polymer-surfactant interaction decides the performance of corresponding complexes, making its rapid and intuitionistic visualization important for enhancing the performance of products and/or processing in related fields. In this study, the fluorescence visualization of the interaction between cationic hyperbranched polyethyleneimine and anionic sodium dodecyl sulfonate surfactant was realized by dual-emissive gold nanocluster labeling. The sensing mechanism was due to the interaction-induced polymer conformation change, which regulated the molecular structure and subsequent photoradiation pro

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Maikokera, Raymond, and Habauka M. Kwaambwa. "Use of Viscosity to Probe the Interaction of Anionic Surfactants with a Coagulant Protein from Moringa oleifera Seeds." Research Letters in Physical Chemistry 2009 (May 24, 2009): 1–5. http://dx.doi.org/10.1155/2009/927329.

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The intrinsic viscosity of the coagulant protein was evaluated from the flow times of the protein solutions through a capillary viscometer, and the results suggested the coagulant protein to be globular. The interactions of the coagulant protein with anionic surfactant sodium dodecyl sulphate (SDS) and sodium dodecyl benzene sulfonate (SDBS) were also investigated by capillary viscometry. We conclude that there is strong protein-surfactant interaction at very low surfactant concentrations, and the behavior of the anionic surfactants in solutions containing coagulant protein is very similar. Th

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Khan, Nasreen, and Blair Brettmann. "Intermolecular Interactions in Polyelectrolyte and Surfactant Complexes in Solution." Polymers 11, no. 1 (2018): 51. http://dx.doi.org/10.3390/polym11010051.

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Polyelectrolytes are an important class of polymeric materials and are increasingly used in complex industrial formulations. A core use of these materials is in mixtures with surfactants, where a combination of hydrophobic and electrostatic interactions drives unique solution behavior and structure formation. In this review, we apply a molecular level perspective to the broad literature on polyelectrolyte-surfactant complexes, discussing explicitly the hydrophobic and electrostatic interaction contributions to polyelectrolyte surfactant complexes (PESCs), as well as the interplay between the t

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Petrovic, Lidija, Jelena Milinkovic, Jadranka Fraj, Sandra Bucko, and Jaroslav Katona. "An investigation of chitosan and sodium dodecyl sulfate interactions in acetic media." Journal of the Serbian Chemical Society 81, no. 5 (2016): 575–87. http://dx.doi.org/10.2298/jsc151119024p.

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Polymer/surfactant association is a cooperative phenomenon where surfactant binds to the polymer in the form of aggregates, usually through electrostatic or hydrophobic forces. As already known, polyelectrolytes may interact with oppositely charged surfactants through electrostatic attraction that results in polymer/surfactant complex formation. This behavior could be desirable in wide range of application of polymer/surfactant mixtures, such as improving colloid stability, gelling, emulsification and microencapsulation. In the present study surface tension, turbidity, viscosity and electropho

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Khan, Iftheker A., Joseph R. V. Flora, A. R. M. Nabiul Afrooz, et al. "Change in chirality of semiconducting single-walled carbon nanotubes can overcome anionic surfactant stabilisation: a systematic study of aggregation kinetics." Environmental Chemistry 12, no. 6 (2015): 652. http://dx.doi.org/10.1071/en14176.

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Environmental context Chirally enriched semiconducting single-walled carbon nanotubes (SWNTs) are some of the most utilised nanomaterials. Although chirality of SWNTs is known to influence their electronic properties and interfacial interaction, the interplay between chirality and surfactant structure in SWNT stability is not well understood. This study investigates these interactions, providing data to better assess the environmental fate of SWNTs. Abstract Single-walled carbon nanotubes’ (SWNT) effectiveness in applications is enhanced by debundling or stabilisation. Anionic surfactants are

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Chandravanshi, Shalini, and Santosh K. Upadhyay. "Interaction of Natural Dye (Allium cepa) with Ionic Surfactants." Journal of Chemistry 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/685679.

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Allium cepais a natural dye that has been extracted from onion skin with the help of soxhlet apparatus. The pigment in the dye pelargonidin was found to be 2.25%. The interaction of the dye with ionic surfactants, namely, cationic surfactant (cetyltrimethylammonium bromide) and anionic (sodium lauryl sulphate) has been studied by spectrophotometrically, conductivity, and surface tension measurements. The thermodynamic and surface parameters have been evaluated for the interaction process. The results indicate{surfactant-dye}complex formation and domination of adsorption in comparison to micell

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Liu, Jianfei, Yuru Wang, and Huifang Li. "Synergistic Solubilization of Phenanthrene by Mixed Micelles Composed of Biosurfactants and a Conventional Non-Ionic Surfactant." Molecules 25, no. 18 (2020): 4327. http://dx.doi.org/10.3390/molecules25184327.

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This study investigated the solubilization capabilities of rhamnolipids biosurfactant and synthetic surfactant mixtures for the application of a mixed surfactant in surfactant-enhanced remediation. The mass ratios between Triton X-100 and rhamnolipids were set at 1:0, 9:1, 3:1, 1:1, 1:3, and 0:1. The ideal critical micelle concentration values of the Triton X-100/rhamnolipids mixture system were higher than that of the theoretical predicted value suggesting the existence of interactions between the two surfactants. Solubilization capabilities were quantified in term of weight solubilization ra

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Singh, Himanshi, Sugam Kumar, and Vinod K. Aswal. "Interplay of interactions in nanoparticle–surfactant complexes in aqueous salt solution." Journal of Applied Physics 132, no. 22 (2022): 224701. http://dx.doi.org/10.1063/5.0118615.

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The evolution of phase behavior and interactions in anionic silica nanoparticles (Ludox HS40), surfactants [non-ionic decaethylene glycol mono-dodecyl ether (C12E10) and anionic sodium dodecyl sulfate (SDS)], and nanoparticle–surfactant solutions in the presence of salt (NaCl) has been studied using small-angle neutron scattering and dynamic light scattering. In an anionic silica nanoparticle solution (1 wt. %), the phase behavior is controlled by salt concentrations (0–1 M) through screening electrostatic interactions. In the case of 1 wt. % surfactant solutions, the anionic SDS surfactant mi

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Moater, Irina, Mihaela Olteanu, Otilia Cinteza, Cristiana Radulescu, and Ionica Ionita. "Adsorption of Some Alkyloxyethylene Pyridinium Chlorides at Solid-Water Interface." Revista de Chimie 59, no. 2 (2008): 168–72. http://dx.doi.org/10.37358/rc.08.2.1727.

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The adsorption of cetylalkyl pyridinium and alkyloxyethylene pyridinium chlorides at the silica-alumina water interface at ph =7 and 25 0C was analyzed to determine the type of interaction between surfactant molecules and solid substrat between adsorbed adiacent molecules and with the surfactant molecules in the equilibrium water solution. The experimental adsorption isotherm for the entire concentration range consists of four regions with the maximum adsorption attained at the critical micelle concentration of each surfactant in aqueous solutions. Different models and equations of adsorption

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Moreno-Velarde, Francisco, Elisa I. Martín, José Hidalgo Toledo, and Antonio Sánchez-Coronilla. "DFT Study on the Enhancement of Isobaric Specific Heat of GaN and InN Nanosheets for Use as Nanofluids in Solar Energy Plants." Materials 16, no. 3 (2023): 915. http://dx.doi.org/10.3390/ma16030915.

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In this work, GaN and InN nanosheets with dodecylamine (DDA) as surfactant have been studied as nanofluids to be used in solar plants. The interactions between the sheets and the surfactants have been performed using density functional theory. The most favorable interaction site on the surface corresponds to the metallic atom of the sheet with the N atom of the surfactant. In this interaction, the pair of electrons of N from the surfactant with the metal atom of the sheet play a stabilizing role, which is corroborated by electron localization function (ELF), quantum theory of atoms in molecule

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Journal, Baghdad Science. "Synergistic Interaction in the adsorbed mixed surfactants film of Sodium Dodecyl Sulfate and Cocamidopropyl Betaine on Liquid – Air Interfacial." Baghdad Science Journal 13, no. 2 (2016): 1–9. http://dx.doi.org/10.21123/bsj.13.2.1-9.

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In the present work, the critical micelle concentration (CMC) of the solution of Sodium dodecyl sulfate (SDS) as anionic surfactant, Cocamidopropyl Betaine (CAPB) as amphoteric surfactant, and their mixture have been determined using surface tension and conductivity measurements at a temperature range 293 -323 K. The adsorption and thermodynamic micellization parameters (?G?m, ?G?ads, ?max ,Amin,?cmc ) for individual surfactants was calculated. Rosen model which is focuses on the adsorbed mixed surfactant film at the air/solution interface was used to calculate the interaction parameter ( ?? )

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Zhang, Na, Ruilian Qi, Haofei Li, et al. "Interaction of phospholipid vesicles with gemini surfactants of different lysine spacer lengths." Soft Matter 15, no. 46 (2019): 9458–67. http://dx.doi.org/10.1039/c9sm02040c.

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Akbar, Javed R., Rubena Deubry, D. Gerrard Marangoni, and Shawn D. Wettig. "Interactions between gemini and nonionic pharmaceutical surfactants." Canadian Journal of Chemistry 88, no. 12 (2010): 1262–70. http://dx.doi.org/10.1139/v10-135.

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The nature and strength of the interactions between the 1,3-bis(dimethylhexadecyl)propanediammonium dibromide (16-3-16) gemini surfactant and a homologous series of nonionic polyoxyethylene (20) sorbitan ester surfactants having laurate (Tween 20), stearate (Tween 60), or oleate (Tween 80) alkyl tails has been investigated. The critical micelle concentration (cmc) values of the mixed gemini–tween systems were determined using the du Noüy ring surface tension method, and the results have been analyzed using Clint’s, Rubingh’s, Motomura’s, and Maeda’s theories for mixed micellar systems. The res

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Abdullahi, Wasiu, Martin Crossman, and Peter Charles Griffiths. "Surfactant-Modulation of the Cationic-Polymer-Induced Aggregation of Anionic Particulate Dispersions." Polymers 12, no. 2 (2020): 287. http://dx.doi.org/10.3390/polym12020287.

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Commodity formulations contain many chemically distinct components and their mutual interactions define the beneficial characteristics of the formulation. Mixing oppositely charged polymers and surfactants invariably induces macroscopic phase separation, to a degree dependent on the prevailing polymer and surface charge densities, and the interaction can be modulated by added ionic surfactants. Here, it is shown that a general universality exists between the charge present on a series of cationic-modified cellulose polymers—the charge being controlled either by the degree of cationic modificat

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Lu, Run-Chao, Ao-Neng Cao, Lu-Hua Lai, and Jin-Xin Xiao. "Protein–surfactant interaction: Differences between fluorinated and hydrogenated surfactants." Colloids and Surfaces B: Biointerfaces 64, no. 1 (2008): 98–103. http://dx.doi.org/10.1016/j.colsurfb.2008.01.009.

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Quanten, Thomas, Pavletta Shestakova, Aleksandar Kondinski та Tatjana Parac-Vogt. "Effect of [Zr(α-PW11O39)2]10− Polyoxometalate on the Self-Assembly of Surfactant Molecules in Water Studied by Fluorescence and DOSY NMR Spectroscopy". Inorganics 6, № 4 (2018): 112. http://dx.doi.org/10.3390/inorganics6040112.

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The catalytic fragmentation of hydrophobic proteins by polyoxometalates (POMs) requires the presence of surfactants in order to increase the solubility of the protein. Depending on the nature of the surfactant, different effects on the kinetics of protein hydrolysis are observed. As the molecular interactions between the POMs and surfactants in solutions have been scarcely explored, in this study, the interaction between the catalytically active Keggin polyoxometalate [Zr(α-PW11O39)2]10− and four different surfactants—sodium dodecyl sulfate (SDS), dodecyldimethyl(3-sulfopropyl)ammonium (Zw3-12

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Azum, Naved, Malik Abdul Rub, Sulaiman Yahya Alfaifi, and Abdullah M. Asiri. "Interaction of Diphenhydramine Hydrochloride with Cationic and Anionic Surfactants: Mixed Micellization and Binding Studies." Polymers 13, no. 8 (2021): 1214. http://dx.doi.org/10.3390/polym13081214.

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The focus of the present work is to evaluate the interactions of an anti-allergic drug (diphenhydramine hydrochloride, DPH) with anionic (sodium dodecyl sulfate, SDS) and cationic (cetylpyridinium chloride, CPC) surfactants in the aqueous medium. The mixed micellization behavior and surface properties of drug-surfactant mixtures have been examined by surface tension measurements. Various theoretical approaches were applied to explore the synergistic or non-ideal behavior of the current mixed systems. Furthermore, the binding studies of drug with surfactants have been elaborated by UV–visible s

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Liu, Qi, Zhitao Chen, and Yingzi Yang. "Study of the Air-Entraining Behavior Based on the Interactions between Cement Particles and Selected Cationic, Anionic and Nonionic Surfactants." Materials 13, no. 16 (2020): 3514. http://dx.doi.org/10.3390/ma13163514.

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The essential role of the air void size distribution in air-entrained cementitious materials is widely accepted. However, how the air-entraining behavior is affected by features such as the molecular structure of air-entraining agents (AEAs), the type of solid particles, or the chemical environment of the pore solution in fresh mortars is still not well understood. Besides, methods to assess the interaction between AEAs and cement particles are limited. Thus, in this study, the air-entraining behaviors of three kinds of surfactant (cationic, anionic, and nonionic) were examined. The general wo

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Parsi, Kurosh. "Interaction of detergent sclerosants with cell membranes." Phlebology: The Journal of Venous Disease 30, no. 5 (2014): 306–15. http://dx.doi.org/10.1177/0268355514534648.

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Commonly used detergent sclerosants including sodium tetradecyl sulphate (STS) and polidocanol (POL) are clinically used to induce endovascular fibrosis and vessel occlusion. They achieve this by lysing the endothelial lining of target vessels. These agents are surface active (surfactant) molecules that interfere with cell membranes. Surfactants have a striking similarity to the phospholipid molecules of the membrane lipid bilayer. By adsorbing at the cell membrane, surfactants disrupt the normal architecture of the lipid bilayer and reduce the surface tension. The outcome of this interaction

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