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Journal articles on the topic 'Micellar properties'

Author: Grafiati

Published: 18 May 2024

Last updated: 26 July 2025

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1

Alopaeus, Julia F., Ellen Hagesæther, and Ingunn Tho. "Micellisation Mechanism and Behaviour of Soluplus®–Furosemide Micelles: Preformulation Studies of an Oral Nanocarrier-Based System." Pharmaceuticals 12, no. 1 (2019): 15. http://dx.doi.org/10.3390/ph12010015.

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: In this study, self-assembling Soluplus® micelles were examined for inherent properties. Through calorimetric analysis, the critical micelle concentration (CMC) could be determined at 25 and 37 °C, and the influence of three media (Milli-Q water, phosphate-buffered saline (PBS) with a pH of 7.4 and 0.1 M HCl) on the lower critical solution temperature (LCST) was detected. Furthermore, the solubilisation of a poorly soluble drug, furosemide, into the Soluplus® micelles was studied. The concentration-dependent properties of the micellar system were assessed through an examination of the micell

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Nguyen, Hau Thi, Wen-Shing Chang, Nguyen Cong Nguyen, Shiao-Shing Chen, and Hau-Ming Chang. "Influence of micelle properties on micellar-enhanced ultrafiltration for chromium recovery." Water Science and Technology 72, no. 11 (2015): 2045–51. http://dx.doi.org/10.2166/wst.2015.370.

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An investigation of micelle properties on the recovery of chromium for micellar enhanced ultrafiltration (MEUF) process was conducted using cationic surfactant of cetyltrimethylammonium bromide (CTAB). The relationship between degree of ionization, micellar sizes and chromium removal were determined in this study. The results showed that the complete ionization for CTA+ and Br− was observed for CTAB lower than 0.72 mM and aggregation initiated at concentration of CTAB higher than 0.72 mM to yield attraction of counterion. The micellar sizes increased with increase in concentration of CTAB (hig

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3

MacInnis, Judith A., Greg D. Boucher, R. Palepu, and D. Gerrard Marangoni. "The properties of a family of two-headed surfactant systems: the 4-alkyl-3-sulfosuccinates 2. Surface properties of alkyl sulfosuccinate micelles." Canadian Journal of Chemistry 77, no. 3 (1999): 340–47. http://dx.doi.org/10.1139/v99-008.

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The micellar properties of a family of two-headed surfactants, the alkyl sulfosuccinates, were investigated employing fluorescence, ultra-violet spectroscopy, and acid-base titrations, as a function of the chain length of the surfactant. Polarity of the micellar interior was investigated using pyrene and the ionic probe 8-anilino-1-naphthalensulfonic acid ammonium salt (ANS). Pyrene I1/I3 ratios were used to probe the microenvironment of the probe in the palisade layer of the micelle. The pKa values of both of the anionic head groups were determined using acid-base titrations. Surface potentia

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4

Wen, Shan-Ni, Chih-Hang Chu, Yu-Chao Wang, et al. "Polymer-Stabilized Micelles Reduce the Drug Rapid Clearance In Vivo." Journal of Nanomaterials 2018 (2018): 1–7. http://dx.doi.org/10.1155/2018/5818592.

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Micelles are self-assembled nanoscaled aggregates from amphiphilic unimers and can be used to encapsulate hydrophobic drugs. However, the dynamic exchanging of unimers between micelles and bulk solution often leads to micelle destabilization and subsequent leaking of the encapsulated substances. Thus, we incorporated a hydrophobic polymer into the micellar core for interlacing the unimers and stabilizing the micelle structure. The polymer-stabilized and non-polymer-stabilized micelles have similar physicochemical properties including small sizes (~35 nm), negative surface charges (~−35 mV), an

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5

Ezhilrani, V. C., Vigneshwari R, and Sasmita Dash. "Comparison Between Interaction of Hydrophobic-anionic and Hydrophobic-cationic Mixed Micellar System with Drug Ciprofloxacin." Oriental Journal Of Chemistry 37, no. 6 (2021): 1376–86. http://dx.doi.org/10.13005/ojc/370616.

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The interaction studies of drug ciprofloxacin with two mixed micellar systems are reported. The mixed micelles comprise a nonionic hydrophobic surfactant, pluronic L-81, an anionic surfactant, Ammonium dodecyl sulfate (ADS); and a cationic surfactant, Cetylpyridinium bromide (CPB). The various combinations chosen were L-81-ADS and L-81-CPB. The properties of both the mixed micelles were compared. Spectrophotometric, conductometric, co-solvent effect, and Infrared studies were used for the investigations. The studies were carried out in a wide range of mixed micellar concentrations in the post

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Sandeep, R. Patil, та Kumar Rakshit Animesh. "Physicochemical properties of anionic-nonionic surfactant mixture : α-sulfonatomyristic acid methyl ester (MES) - nonaoxyethylene monododecyl ether (C12E9)". Journal of Indian Chemical Society Vol. 80, Apr 2003 (2003): 345–50. https://doi.org/10.5281/zenodo.5839634.

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Department of Chemistry, Faculty of Science, The Maharaja Sayajirao University of Baroda, Vadodara-390 002, India <em>E-mail :</em> rakshitak@indiatimes.com akrakshit@yahoo.co. in <em>Manuscript received 20 September 2002</em> We report the interfacial, thermodynamic and performance properties of the binary mixture of α-sulfonatomyristic acid methyl ester (<strong>MES</strong>) and nonaoxyethylene monododecyl ether (<strong>C<sub>12</sub> E<sub>9)</sub></strong>. The critical micelle concentration (cmc), thermodynamics of micellization and adsorption, and minimum area occupied by the sur

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7

Dzhangiryan, N. A., and V. I. Shipulin. "PROPERTIES OF MICELLAR CASEIN AND APPLICATION IN FOOD INDUSTRY." Sovremennaya nauka i innovatsii, no. 1 (41) (2023): 56–64. http://dx.doi.org/10.37493/2307-910x.2023.1.5.

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Milk casein has important properties that ensure the widespread use of this protein in industry and increased interest in its study by researchers. Studies of the structure of casein in its native state have revealed its micellar structure. The presence of large ions leads to an increase in the volume of micelles, while acidification results in a decrease. During storage, the ability of MCC to rehydrate and dissolve reduces, aggregation and degradation of the structure are observed, with an increase in storage temperature, these indicators noticeably decrease. Thermal stability is greatest nea

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8

Elistratova, Anastasiia A., Alexander S. Gubarev, Alexey A. Lezov, et al. "Amphiphilic Diblock Copolymers Bearing Poly(Ethylene Glycol) Block: Hydrodynamic Properties in Organic Solvents and Water Micellar Dispersions, Effect of Hydrophobic Block Chemistry on Dispersion Stability and Cytotoxicity." Polymers 14, no. 20 (2022): 4361. http://dx.doi.org/10.3390/polym14204361.

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Despite the fact that amphiphilic block copolymers have been studied in detail by various methods both in common solvents and aqueous dispersions, their hydrodynamic description is still incomplete. In this paper, we present a detailed hydrodynamic study of six commercial diblock copolymers featuring the same hydrophilic block (poly(ethylene glycol), PEG; degree of polymerization is ca. 110 ± 25) and the following hydrophobic blocks: polystyrene, PS35-b-PEG115; poly(methyl methacrylate), PMMA55-b-PEG95; poly(1,4-butadyene), PBd90-b-PEG130; polyethylene PE40-b-PEG85; poly(dimethylsiloxane), PDM

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Mullally, Maria K., and D. Gerrard Marangoni. "Micellar properties of zwitterionic surfactant - alkoxyethanol mixed micelles." Canadian Journal of Chemistry 82, no. 7 (2004): 1223–29. http://dx.doi.org/10.1139/v04-022.

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The micelle formation process for a zwitterionic surfactant, N-dodecyl-N,N-dimethyl-3-ammonio-1-propanesulfonate (ZW3-12), has been investigated in a series of mixed solvents consisting of different concentrations of ethoxylated alcohols and polymers. The critical micelle concentrations (cmc values) of the aggregates were determined by fluorescence spectroscopy, and the surfactant aggregation numbers were obtained from luminescence probing experiments. The cmc values for ZW3-12 changed very little in the presence of increasing amounts of poly(ethyleneoxide) (PEO) in the mixed solvent. In the c

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Biasutti, M. A., and Juana J. Silber. "Interaction between tetracyanoethylene and naphthalene in reverse micelles of AOT in n-hexane. The electron-donor properties of AOT." Canadian Journal of Chemistry 74, no. 9 (1996): 1603–8. http://dx.doi.org/10.1139/v96-177.

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The electron donor–acceptor (EDA) interaction between TCNE and naphthalene (Naph) in n-hexane and reverse micelles of AOT in n-hexane was studied by UV–visible spectroscopy with the aim of determining the influence of the micellar media on the EDA interaction. The spectra of the mixtures of TCNE–Naph in n-hexane show two typical maxima at 418 and 534 nm, assigned to the formation of a π–π EDA complex. In the micellar media a new band is observed at 398 nm. When the spectra of TCNE in n-hexane are studied in the presence of AOT two new bands at 398 and 418 nm are detected. These bands are consi

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Liu, Rui, WanFen Pu, Hu Jia, XiaoPei Shang, Yue Pan, and ZhaoPeng Yan. "Rheological Properties of Hydrophobically Associative Copolymers Prepared in a Mixed Micellar Method Based on Methacryloxyethyl-dimethyl Cetyl Ammonium Chloride as Surfmer." International Journal of Polymer Science 2014 (2014): 1–14. http://dx.doi.org/10.1155/2014/875637.

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A novel cationic surfmer, methacryloxyethyl-dimethyl cetyl ammonium chloride (DMDCC), is synthesized. The micellar properties, including critical micelle concentration and aggregation number, of DMDCC-SDS mixed micelle system are studied using conductivity measurement and a steady-state fluorescence technique. A series of water-soluble associative copolymers with acrylamide and DMDCC are prepared using the mixed micellar polymerization. Compared to conventional micellar polymerization, this new method could not only reasonably adjust the length of the hydrophobic microblock, that is,NH, but al

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Munir, Muhammad, Arsani Salib, Lok Shu Hui, and Ayse Turak. "Unusual Phase Behaviour for Organo-Halide Perovskite Nanoparticles Synthesized via Reverse Micelle Templating." Chemistry 5, no. 4 (2023): 2490–512. http://dx.doi.org/10.3390/chemistry5040163.

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Micelle templating has emerged as a powerful method to produce monodisperse nanoparticles. Herein, we explore unconventional phase transformations in the synthesis of organo-halide perovskite nanoparticles utilizing reverse micelle templates. We employ diblock-copolymer reverse micelles to fabricate these nanoparticles, which confines ions within micellar nanoreactors, retarding reaction kinetics and facilitating perovskite cage manipulation. The confined micellar environment exerts pressure on both precursors and perovskite crystals formed inside, enabling stable phases not typically observed

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13

Banshoya, Kengo, Tetsuya Nakamura, Tetsuro Tanaka, and Yoshiharu Kaneo. "Coenzyme Q10-Polyethylene Glycol Monostearate Nanoparticles: An Injectable Water-Soluble Formulation." Antioxidants 9, no. 1 (2020): 86. http://dx.doi.org/10.3390/antiox9010086.

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Therapeutic applications of coenzyme Q10 (CoQ10) are greatly limited by its lack of solubility in aqueous media. In this study, polyethylene glycol monostearate (stPEG) was used to construct micelles containing CoQ10 as a new formulation. The micellar formulations (stPEG/CoQ10) were prepared using five types of stPEG with 10, 25, 40, 55, and 140 PEG repeat units, respectively. The micellar preparation was simple, consisting of only stPEG and CoQ10. Next, we compared the physical properties and blood circulation of these micelles. The CoQ10 load of this formulation was approximately 15 w/w%. Ba

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14

Xiong, Di, Liyang Wen, Shiyuan Peng, Jianchang Xu, and Lijuan Zhang. "Reversible Cross-Linked Mixed Micelles for pH Triggered Swelling and Redox Triggered Degradation for Enhanced and Controlled Drug Release." Pharmaceutics 12, no. 3 (2020): 258. http://dx.doi.org/10.3390/pharmaceutics12030258.

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Good stability and controlled drug release are important properties of polymeric micelles for drug delivery. A good candidate for drug delivery must have outstanding stability in a normal physiological environment, followed with low drug leakage and side effects. Moreover, the chemotherapeutic drug in the micellar core should also be quickly and “on-demand” released in the intracellular microenvironment at the tumor site, which is in favor of overcoming multidrug resistance (MDR) effects of tumor cells. In this work, a mixed micelle was prepared by the simple mix of two amphiphilic copolymers,

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Klyachko, Natalia L., Natalia G. Bogdanova, Andrei V. Levashov, and Karel Martinek. "Micellar Enzymology: Superactivity of Enzymes in Reversed Micelles of Surfactants Solvated by Water/Organic Cosolvent Mixtures." Collection of Czechoslovak Chemical Communications 57, no. 3 (1992): 625–40. http://dx.doi.org/10.1135/cccc19920625.

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Catalytic properties of α-chymotrypsin, peroxidase and laccase, dissolved in water-immiscible organic solvents by entrapping them into the reversed micelles of surfactants solvated by water/organic cosolvent (glycerol or 1,4- or 2,3-butanediol or dimethyl sulfoxide) mixtures, are studied. As micelle-forming surfactants, sodium salt of bis(2-ethylhexyl)sulfosuccinate (Aerosol OT) in n-octane or cetyltrimethylammonium bromide in n-octane/chloroform (1 : 1 by volume) mixture are used. The dependences of the catalytic activity on the surfactant solvation degree are bell-shaped. Maxima of the catal

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MacInnis, Judith A., R. Palepu, and D. Gerrard Marangoni. "A nuclear magnetic resonance investigation of the micellar properties of a series of sodium cyclohexylalkanoates." Canadian Journal of Chemistry 77, no. 11 (1999): 1994–2000. http://dx.doi.org/10.1139/v99-211.

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The micellar properties of a family of surfactants, the sodium cyclohexylalkanoates, have been investigated in aqueous solution using multinuclear NMR spectroscopy. C-13 chemical shift measurements have been used to determine both the cmc values and the micellar aggregation numbers (Ns values) of these surfactants. The cmc values and the degrees of counterion binding were estimated from 23Na chemical shift measurements. The critical micelle concentrations (cmc's) and the aggregation numbers determined from the NMR experiments indicate that these amphiphiles have high cmc's and low aggregation

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Groult, Hugo, Isabel García-Álvarez, Lorenzo Romero-Ramírez, et al. "Micellar Iron Oxide Nanoparticles Coated with Anti-Tumor Glycosides." Nanomaterials 8, no. 8 (2018): 567. http://dx.doi.org/10.3390/nano8080567.

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The synthesis procedure of nanoparticles based on thermal degradation produces organic solvent dispersible iron oxide nanoparticles (OA-IONP) with oleic acid coating and unique physicochemical properties of the core. Some glycosides with hydrophilic sugar moieties bound to oleyl hydrophobic chains have antimitotic activity on cancer cells but reduced in vivo applications because of the intrinsic low solubility in physiological media, and are prone to enzymatic hydrolysis. In this manuscript, we have synthetized and characterized OA-IONP-based micelles encapsulated within amphiphilic bioactive

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18

Tănase, Maria Antonia, Adina Raducan, Petruţa Oancea, et al. "Mixed Pluronic—Cremophor Polymeric Micelles as Nanocarriers for Poorly Soluble Antibiotics—The Influence on the Antibacterial Activity." Pharmaceutics 13, no. 4 (2021): 435. http://dx.doi.org/10.3390/pharmaceutics13040435.

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In this work, novel polymeric mixed micelles from Pluronic F127 and Cremophor EL were investigated as drug delivery systems for Norfloxacin as model antibiotic drug. The optimal molar ratio of surfactants was determined, in order to decrease critical micellar concentration (CMC) and prepare carriers with minimal surfactant concentrations. The particle size, zeta potential, and encapsulation efficiency were determined for both pure and mixed micelles with selected composition. In vitro release kinetics of Norfloxacin from micelles show that the composition of surfactant mixture generates tunabl

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Mirgorod, Yu A., N. A. Borsch, A. M. Storozhenko, and L. S. Ageeva. "Emergent properties of magnetic ions and nanoparticles in micellar solutions of surfactants: Use in fine technologies." Fine Chemical Technologies 18, no. 5 (2023): 471–81. http://dx.doi.org/10.32362/2410-6593-2023-18-5-471-481.

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Objectives. To establish expected emergent (unexpected) properties of magnetic materials when obtained in aqueous micellar solutions of surfactants (aqueous quantum materials), and their use in fine technologies.Methods. Chemical synthesis of magnetic nanoparticles in aqueous micellar solutions of surfactants of various nature. Characterization of magnetic solutions and nanoparticles by magnetic measurements, spectroscopy, diffractometry, small-angle X-ray diffraction, scanning probe microscopy, and others.Results. The term “water quantum material” refers to materials (micellar solutions) whos

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Li, Jian Ping, Lian Lai Cui, Xin Tan, and Ling Zhang. "Preparation of Interface-Cross-Linked Micelles as Drug Delivery via RAFT Polymerization." Advanced Materials Research 716 (July 2013): 147–52. http://dx.doi.org/10.4028/www.scientific.net/amr.716.147.

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Block copolymer PLA200-b-PPEGMEMA225 were prepared via ring-open polymerization and RAFT process. Further stabilization of the micellar system was performed in water using a dimethacrylate (EDGMA), and the RAFT to cross-link the interface. The interface-cross-linked micelle was found to present better properties than the uncross-linked block copolymer micelle during the drug loading and releasing experiment. Both block copolymers and cross-linked micelles show no toxicity on COS-7 cell line.

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Greencorn, David J., Victoria M. Sandre, Emily K. Piggott, et al. "Asymmetric cationic gemini surfactants: an improved synthetic procedure and the micellar and surface properties of a homologous series in the presence of simple salts." Canadian Journal of Chemistry 96, no. 7 (2018): 672–80. http://dx.doi.org/10.1139/cjc-2017-0676.

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The micellar and morphological properties of symmetric, cationic gemini surfactants have been well studied in the literature as a function of nature and type of the spacer group and the length and type of hydrophobic chain. In this paper, we have examined the effects of tail asymmetry on the properties of a series of cationic surfactants, the N-alkyl-1-N′-alkyl-2-N,N,N′,N′-tetramethyldiammonium dibromide. A novel synthetic method is used to prepare a series of these surfactants and the consequences of asymmetry on micellar properties are presented. This new method has been shown to be more eff

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Malkawi, Ahmad, Nasr Alrabadi, and Ross Allan Kennedy. "Dual-Acting Zeta-Potential-Changing Micelles for Optimal Mucus Diffusion and Enhanced Cellular Uptake after Oral Delivery." Pharmaceutics 13, no. 7 (2021): 974. http://dx.doi.org/10.3390/pharmaceutics13070974.

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Context: Overcoming the intestinal mucosal barrier can be a challenge in drug delivery. Nanoemulsions with negative zeta potentials can effectively permeate the mucus layer, but those with positive zeta potentials are better taken up by cells; a nanoemulsion with capricious zeta potential from negative to positive can achieve both good permeation and high uptake. Objective: This study aimed to develop dual-acting zeta-potential-amphoteric micelles enabling optimal muco-permeation and enhancement of cellular uptake. Methods: A micellar pre-concentrate was prepared from 15% Labrasol, 15% Kolliph

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Mwalupindi, Averrin G., Rezik A. Agbaria, and Isiah M. Warner. "Synthesis and Characterization of the Surfactant Terbium 3-[[1,2-Bis-[[(2-Ethylhexyl)Oxy]Carbonyl]Ethyl]Thio]Succinate as a Reagent for Determining Organic Analytes." Applied Spectroscopy 48, no. 9 (1994): 1132–37. http://dx.doi.org/10.1366/0003702944029497.

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The surfactant terbium 3-[[1,2-bis[[(2-ethylhexyl)oxy]carbonyl]ethyl]thio]succinate has been synthesized and characterized by use of its absorption, luminescence, and microviscosity properties. In the presence of small amounts of water, this surfactant aggregates in cyclohexane to form reversed micelles containing Tb(III) counterions. The critical reverse micelle concentration has been determined to be 5.7 × 10−5 M with the use of an optical probe. Organic analytes solubilized in reverse micelles have been detected indirectly with the use of the luminescence characteristics of Tb(III) counteri

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Lebedeva, Inna O., Ekaterina B. Zhulina, and Oleg V. Borisov. "Self-Assembly of Bottlebrush Block Copolymers in Selective Solvent: Micellar Structures." Polymers 13, no. 9 (2021): 1351. http://dx.doi.org/10.3390/polym13091351.

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Block copolymers comprising chemically different bottlebrush blocks can self-assemble in selective solvents giving rise to micellar-like solution nanostructures. The self-consistent field theoretical approach is used for predicting relation between architectural parameters of both bottlebrush blocks (polymerization degrees of the main and side chains, density of grafting of the side chains to the backbone) and structural properties of micelles as well as critical micelle concentration (CMC). As predicted by the theory, replacement of linear blocks by bottlebrush ones with the same degrees of p

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Georges, Joseph, and Jean-Michel Mermet. "Investigation of Micellar Effects in Thermal Lens Spectrophotometry." Applied Spectroscopy 44, no. 1 (1990): 122–27. http://dx.doi.org/10.1366/0003702904086010.

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The effect of micellar solutions in thermal lens spectrophotometry was investigated. Several aspects of the thermal lens signal including the formation rate and the relaxation of the thermal lens were compared in various neat solvents and in aqueous micellar solutions. The experiments were performed with a double-beam thermal lens apparatus based upon a pulsed-dye laser as the excitation beam and a He-Ne laser as the probe beam. The results show that, if micellar solutions can be used to solubilize hydrophilic species in solvents having better thermo-optical properties than water, they do not

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Tian, Maozhang, Xi Chen, Xinyuan Zou, Yuchen Qian, Zhang Liu, and Yaxun Fan. "pH-Responsive Rheological Properties and Microstructure Transition in Mixture of Anionic Gemini/Cationic Monomeric Surfactants." Molecules 26, no. 16 (2021): 5013. http://dx.doi.org/10.3390/molecules26165013.

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Surfactant aggregates have long been considered as a tool to improve drug delivery and have been widely used in medical products. The pH-responsive aggregation behavior in anionic gemini surfactant 1,3-bis(N-dodecyl-N-propanesulfonate sodium)-propane (C12C3C12(SO3)2) and its mixture with a cationic monomeric surfactant cetyltrimethylammonium bromide (CTAB) have been investigated. The spherical-to-wormlike micelle transition was successfully realized in C12C3C12(SO3)2 through decreasing the pH, while the rheological properties were perfectly enhanced for the formation of wormlike micelles. Espe

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Singh Rajput, Koushlendra, Ram Krishna Shrivastava, and L. K. Tiwary. "IMPACT OF MICELLAR CHARACTERISTICS ON THE DISSOLUTION AND EFFICACY OF ANTICANCER AGENTS: A REVIEW." International Journal of Advanced Research 13, no. 03 (2025): 138–45. https://doi.org/10.21474/ijar01/20546.

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Micellar drug delivery system is one of the potentially efficient approaches for increasing the solubility, stability, and bioavailability of hydrophobic anticancer agents. This review study investigates the effects of major micellar properties on the solubility and therapeutic effectiveness of anticancer medications, including size, shape, surface charge, and stability. The non-spherical micelles may increase cellular uptake and lengthen circulation time, while smaller micelles may improve drug solubility and tumor penetration as various studies suggest. The surface charge of particles is als

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Jeyarajan, Helen Ratna Monica. "PHOTOPHYSICAL ASPECTS OF POLARITY SENSITIVE FLUOROPHORE IN CATIONIC REVERSE MICELLES." Journal of Advanced Scientific Research 13, no. 01 (2022): 340–47. http://dx.doi.org/10.55218/jasr.202213140.

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In recent years, the field of reverse micelles has witnessed a significant growth of interest, partly due to the finding that proteins, other biopolymers, and even bacterial cells can be solubilized in the reverse micellar systems. Among surfactants capable of forming water in oil microemulsion, the cationic surfactant cetyltrimethylammonium bromide (CTAB) has received particular attention because of its ability to solubilize relatively large amount of water in a variety of hydrophobic organic solvents. Due to versatile photochemical and photophysical properties of Ru(II) complexes, Ru(II)- ph

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Streltsova, E. A., O. V. Voliuvach, and A. F. Tymchuk. "SURFACE PROPERTIES AND MICELLIZATION OF SODIUM ALKYLSULPHATES IN THE PRESENCE OF LOW-MOLECULAR ALCOHOLS." Odesa National University Herald. Chemistry 29, no. 1(87) (2024): 78–90. http://dx.doi.org/10.18524/2304-0947.2024.1(87).307867.

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The process of micellization of sodium alkyl sulfates (SAS : sodium decyl- (SDS) and dodecylsulfate (SDDS)) of formation in aqueous solution without or with alcohols including propanol-1, propanol-2 and butanol-1 and their adsorption behavior at air-liquid interface were investigated with both the tensiometry and the conductometry at 298 K. The effect of chain length of alcohol on micellar and interfacial properties were discussed. Some parameters including surface excess concentration (Γmax), minimum area per surfactant molecule (Smin) at air-liquid interface, degree of ionization of micelle,

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Albano, Juan, Damian Grillo, Julio Facelli, Marta Ferraro, and Mónica Pickholz. "Study of the Lamellar and Micellar Phases of Pluronic F127: A Molecular Dynamics Approach." Processes 7, no. 9 (2019): 606. http://dx.doi.org/10.3390/pr7090606.

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In this work, we analyzed the behavior of Pluronic F127 through molecular dynamics simulations at the coarse-grain level, focusing on the micellar and lamellar phases. To this aim, two initial polymer conformations were considered, S-shape and U-shape, for both simulated phases. Through the simulations, we were able to examine the structural and mechanical properties that are difficult to access through experiments. Since no transition between S and U shapes was observed in our simulations, we inferred that all single co-polymers had memory of their initial configuration. Nevertheless, most co

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Janosevic-Lezaic, Aleksandra, Nikola Paunovic, and Natasa Pejic. "Thermodynamics of micellization of hexadecyltrimethylammonium bromide in propylene glycol-water mixture: A conductivity study." Facta universitatis - series: Physics, Chemistry and Technology 12, no. 1 (2014): 17–26. http://dx.doi.org/10.2298/fupct1401017j.

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Micellization of hexadecyltrimethylammonium bromide (syn. cetyltrimethylammonium bromide, CTAB) in propylene glycol-water (30% v/v) binary mixture, as well as the thermodynamic properties of the resulting micelles, were investigated by electrical conductivity measurements. The conductivity data were used to determine both the critical micellar concentration (CMC) and the micellar ionization degree (?) of CTin the temperature range 298.2-310.2 K. The equilibrium model of micelle formation was applied in order to obtain the thermodynamic parameters (the standard molar Gibbs free energy, ?Gm0, en

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Ferreira, William T., Huynh A. Hong, Mateusz Hess, et al. "Micellar Antibiotics of Bacillus." Pharmaceutics 13, no. 8 (2021): 1296. http://dx.doi.org/10.3390/pharmaceutics13081296.

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Members of the Bacillus genus, particularly the “Bacillus subtilis group”, are known to produce amphipathic lipopeptides with biosurfactant activity. This includes the surfactins, fengycins and iturins that have been associated with antibacterial, antifungal, and anti-viral properties. We have screened a large collection of Bacillus, isolated from human, animal, estuarine water and soil samples and found that the most potent lipopeptide producers are members of the species Bacillus velezensis. B. velezensis lipopeptides exhibited anti-bacterial activity which was localised on the surface of bo

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Hussein A. Abdul Hussein and Nidhal K. Maraie. "Highlights on polymeric micelles as versatile nanocarriers for drug transporting." Al Mustansiriyah Journal of Pharmaceutical Sciences 21, no. 2 (2022): 21–30. http://dx.doi.org/10.32947/ajps.v21i2.806.

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Polymeric micelles are nanoscale core-shell structures formed by amphiphilic (block or graft) copolymers, that can self-aggregate in an aqueous medium. PMs characterized by small size, spherical shape, lower critical micellar concentration, which gave higher stability for PMs over conventional surfactant micelles. The core/shell structure permits polymeric micelle to entrap poor soluble drugs and can improve their solubility and permeability. The preparation of PMs tends to be relatively easy as compared to other novel drug delivery systems. This review focus on the general properties, t

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Cid, Antonio, Oscar Moldes, Juan Mejuto, and Jesus Simal-Gandara. "Interaction of Caffeic Acid with SDS Micellar Aggregates." Molecules 24, no. 7 (2019): 1204. http://dx.doi.org/10.3390/molecules24071204.

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Micellar systems consisting of a surfactant and an additive such as an organic salt or an acid usually self-organize as a series of worm-like micelles that ultimately form a micellar network. The nature of the additive influences micellar structure and properties such as aggregate lifetime. For ionic surfactants such as sodium dodecyl sulfate (SDS), CMC decreases with increasing temperature to a minimum in the low-temperature region beyond which it exhibits the opposite trend. The presence of additives in a surfactant micellar system also modifies monomer interactions in aggregates, thereby al

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Wen, Xin, Lei Wang, Xiaojuan Lai, et al. "Polymerization Behavior and Rheological Properties of a Surfactant-Modified Reactive Hydrophobic Monomer." Chemistry 5, no. 4 (2023): 2598–612. http://dx.doi.org/10.3390/chemistry5040168.

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The structures and properties of hydrophobic association polymers can be controlled using micelles. In this work, we synthesize a reactive hydrophobic surfactant monomer, KS-3, from oleic acid, N,N-dimethylpropylenediamine, and allyl chloride. A strong synergistic effect between KS-3 and cocamidopropyl betaine in aqueous solution enhances the hydrophilic dispersibility of KS-3, thereby transforming spherical micelles into cylindrical micelles. KS-3 was grafted onto a polyacrylamide chain via aqueous free-radical polymerization to obtain RES, a hydrophobic association polymer. Structural analys

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Liu, Haipeng, and Darrell Irvine. "Immunostimulatory properties of dynamic oligonucleotide micelles (53.9)." Journal of Immunology 188, no. 1_Supplement (2012): 53.9. http://dx.doi.org/10.4049/jimmunol.188.supp.53.9.

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Abstract Synthetic immunostimulatory oligonucleotides such as double-stranded RNA or unmethylated cytosine-guanosine motifs (CpG-ODNs) mimic molecular signatures of pathogens and trigger an immunostimulatory cascade; as a result, these synthetic ODNs have been extensively studied as therapeutic agents for cancer and as vaccine adjuvants. Using a self-assembly approach, we designed lipo-CpG-ODN molecules composed of CpG oligos conjugated with diacyl lipid tails. These dynamic amphiphiles form compact micelles ~20 nm in diam. in water but can also disassemble and insert their acyl tails into the

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Gracie, Kim, Dale Turner, and R. Palepu. "Thermodynamic properties of micellization of sodium dodecyl sulfate in binary mixtures of ethylene glycol with water." Canadian Journal of Chemistry 74, no. 9 (1996): 1616–25. http://dx.doi.org/10.1139/v96-179.

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Micellar properties of sodium dodecyl sulfate (SDS) in aqueous mixtures of ethylene glycol (EG) were determined using techniques such as conductivity, density, EMF, surface tension, viscosity, ultrasonic velocity, and spectroscopy (fluorescence). The effective degree of disssociation of micelles (α) was determined using three different methods. Thermodynamics of micellization were obtained from the temperature dependence of critical micelle concentrations (cmc) values. The difference in Gibbs energies of micellization [Formula: see text] of SDS, between water and mixed solvent systems, was cal

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JAMES, Stephen R., Sheila SMITH, Andrew PATERSON, T. Kendall HARDEN та C. Peter DOWNES. "Time-dependent inhibition of phospholipase Cβ-catalysed phosphoinositide hydrolysis: a comparison of different assays". Biochemical Journal 314, № 3 (1996): 917–21. http://dx.doi.org/10.1042/bj3140917.

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The properties of three different β-isoforms of phospholipase C (PLC) were analysed using substrate lipids dispersed in phospholipid vesicles, phospholipid–detergent mixed micelles and phospholipid monolayers spread at an air–water interface. Phosphatidylinositol 4,5-bisphosphate hydrolysis went virtually to completion in monolayers, but inositol trisphosphate production was curtailed prematurely in vesicular and micellar assays. Assays were linear for less than 2 min with vesicles; the linear portion could be significantly extended in micelles by increasing the ratio of micelles to enzyme mol

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Zlotnikov, Igor D., Dmitriy A. Streltsov, Natalya Georgievna Belogurova, and Elena Vadimovna Kudryashova. "Chitosan or Cyclodextrin Grafted with Oleic Acid Self-Assemble into Stabilized Polymeric Micelles with Potential of Drug Carriers." Life 13, no. 2 (2023): 446. http://dx.doi.org/10.3390/life13020446.

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Polymeric micelles combining the advantages of biocompatible poly- and oligosaccharides with classical micellar amphiphilic systems represent a promising class of drug carriers. In this work, micelles based on chitosan (or cyclodextrin) and oleic acid with various modification degrees were synthesized—the most optimal grafting degree is 15–30% in terms of CMC. According to NTA data, micelles have a hydrodynamic diameter of the main fraction of 60–100 nm. The inclusion of the antibacterial agents: moxifloxacin or rifampicin in micelles was studied by FTIR spectroscopy and fluorescence spectrosc

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Kahana, Amit, Doron Lancet, and Zoltan Palmai. "Micellar Composition Affects Lipid Accretion Kinetics in Molecular Dynamics Simulations: Support for Lipid Network Reproduction." Life 12, no. 7 (2022): 955. http://dx.doi.org/10.3390/life12070955.

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Mixed lipid micelles were proposed to facilitate life through their documented growth dynamics and catalytic properties. Our previous research predicted that micellar self-reproduction involves catalyzed accretion of lipid molecules by the residing lipids, leading to compositional homeostasis. Here, we employ atomistic Molecular Dynamics simulations, beginning with 54 lipid monomers, tracking an entire course of micellar accretion. This was done to examine the self-assembly of variegated lipid clusters, allowing us to measure entry and exit rates of monomeric lipids into pre-micelles with diff

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Majumder, Nairrita, Nandita G Das, and Sudip K. Das. "Polymeric micelles for anticancer drug delivery." Therapeutic Delivery 11, no. 10 (2020): 613–35. http://dx.doi.org/10.4155/tde-2020-0008.

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Polymeric micelles have gained interest as novel drug delivery systems for the treatment and diagnosis of cancer, as they offer several advantages over conventional drug therapies. This includes drug targeting to tumor tissue, in vivo biocompatibility and biodegradability, prolonged circulation time, enhanced accumulation, retention of the drug loaded micelle in the tumor and decreased side effects. This article provides an overview on the current state of micellar formulations as nanocarriers for anticancer drugs and their effectiveness in cancer therapeutics, including their clinical status.

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Kumar, Naveen, Rashmi Tyagi, and V. K. Tyagi. "Efficiency of single and mixed dimeric surfactants micelles on solubil-ization of polycyclic aromatic hydrocarbons." Applied Chemical Engineering 3, no. 1 (2020): 8. http://dx.doi.org/10.24294/ace.v3i1.545.

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The solubilization of polycyclic aromatic hydrocarbons (PAHs) such as naphthalene, phenanthrene and pyrene by single and mixed anionic dimeric surfactants was investigated and correlated with micellar properties of these surfactants. The surface and micellar properties of single and binary mixed combinations of anionic dimeric surfactants have been studied through surface tension as well as conductivity measurements at 300 K. The associations between their micelle properties and solubilizing efficiency towards PAHs have been quantified and discussed in terms of the molar solubilization ratio (

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Hils, Christian, Ian Manners, Judith Schöbel, and Holger Schmalz. "Patchy Micelles with a Crystalline Core: Self-Assembly Concepts, Properties, and Applications." Polymers 13, no. 9 (2021): 1481. http://dx.doi.org/10.3390/polym13091481.

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Crystallization-driven self-assembly (CDSA) of block copolymers bearing one crystallizable block has emerged to be a powerful and highly relevant method for the production of one- and two-dimensional micellar assemblies with controlled length, shape, and corona chemistries. This gives access to a multitude of potential applications, from hierarchical self-assembly to complex superstructures, catalysis, sensing, nanomedicine, nanoelectronics, and surface functionalization. Related to these applications, patchy crystalline-core micelles, with their unique, nanometer-sized, alternating corona seg

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Brito, Mariano E., Sofia E. Mikhtaniuk, Igor M. Neelov, Oleg V. Borisov, and Christian Holm. "Implicit-Solvent Coarse-Grained Simulations of Linear–Dendritic Block Copolymer Micelles." International Journal of Molecular Sciences 24, no. 3 (2023): 2763. http://dx.doi.org/10.3390/ijms24032763.

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The design of nanoassemblies can be conveniently achieved by tuning the strength of the hydrophobic interactions of block copolymers in selective solvents. These block copolymer micelles form supramolecular aggregates, which have attracted great attention in the area of drug delivery and imaging in biomedicine due to their easy-to-tune properties and straightforward large-scale production. In the present work, we have investigated the micellization process of linear–dendritic block copolymers in order to elucidate the effect of branching on the micellar properties. We focus on block copolymers

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Jurok, Radek, Eva Svobodová, Radek Cibulka, and František Hampl. "Reactivity in Micelles - Are We Really Able to Design Micellar Catalysts?" Collection of Czechoslovak Chemical Communications 73, no. 2 (2008): 127–46. http://dx.doi.org/10.1135/cccc20080127.

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Coordination of lipophilic alkyl pyridin-2-yl ketoximes 1 to Ni2+ ions, reduction of lipophilic 3-alkoxyacetophenones 2 with sodium borohydride, and alkaline hydrolysis of 4-nitrophenyl diphenyl phosphate (PNPDPP) were employed as probes in the investigation which factors may influence the reactivity of organic compounds in micellar systems. In all these reactions, a lipophilic substrate solubilized in micellar core was attacked by a hydrophilic reagent from the bulk aqueous phase. To evaluate the contribution of electrostatic interactions between the micellar surface charge and the reagent to

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Zlotnikov, Igor D., Natalya G. Belogurova, and Elena V. Kudryashova. "Targeted Delivery Inside the Cells Directly Visualized with Förster Resonance Energy Transfer (FRET)." Polymers 17, no. 6 (2025): 790. https://doi.org/10.3390/polym17060790.

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We established a real-time Förster resonance energy transfer (FRET) based assay to evaluate targeted drug delivery using polymeric micelles. Red fluorescent protein (RFP)-expressing E. coli cells were used as a test system to monitor the delivery of drug-fluorophore such as curcumin and umbelliferones (MUmb and AMC) encapsulated in the polymeric micellar formulations. The efficiency of the drug delivery was quantified using the FRET efficiency, measured as the degree of energy transfer from the drug to the RFP. FRET efficiency directly provides the determination of the delivery efficacy, offer

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Hossain, M. A., M. A. Rahman, and M. A. Subhan. "Diffusion Interactions of Some Biologically Important Transition Metal Complexes on Micellar Properties of Sodium Dodecyl Sulphate." Journal of Scientific Research 4, no. 1 (2011): 135. http://dx.doi.org/10.3329/jsr.v4i1.7989.

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The specific conductance of aqueous solutions of sodium dodecyl sulphate (SDS) was measured from 20 to 35 ºC with an interval of 5 °C in the absence and presence of metal complexes such as [Cr(acac)2(H2O)2]Cl, K3[Fe(C2O4)3] and (NH4)4[Co(C6H5O7)2] at concentrations ranging from 2.0 × 10-4 to 8.0 x 10-4 M. The specific conductance rapidly increased at the pre-micellar region with increasing of temperature and concentration of SDS, but after critical micelle concentration (CMC) the rate of increase was slower. As the concentrations of metal complexes [Cr(acac)2(H2O)2]Cl, K3[Fe(C2O4)3] and (NH4)4

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Numin, Mohd Sofi, Khairulazhar Jumbri, Anita Ramli, and Noorazlenawati Borhan. "Microemulsion Rheological Analysis of Alkaline, Surfactant, and Polymer in Oil-Water Interface." Processes 8, no. 7 (2020): 762. http://dx.doi.org/10.3390/pr8070762.

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Injection of alkaline (A), polymer (P), and surfactant (S) chemicals in enhanced oil recovery (cEOR) processes increases output by changing the properties of the injected fluid. In this work, micellar fluid interactions were studied via microemulsion rheological analysis. Crude oil and stimulated brine with ASP or SP was used for bottle testing. The results revealed that no microemulsion was produced when ASP (Alkaline, Surfactant, and Polymer) or SP (Surfactant and Polymer) was left out during the bottle testing phase. The addition of ASP and SP led to the formation of microemulsions—up to 29

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Gudelj, Martina, Paola Šurina, Lucija Jurko, Ante Prkić, and Perica Bošković. "The Additive Influence of Propane-1,2-Diol on SDS Micellar Structure and Properties." Molecules 26, no. 12 (2021): 3773. http://dx.doi.org/10.3390/molecules26123773.

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Micellar systems are colloids with significant properties for pharmaceutical and food applications. They can be used to formulate thermodynamically stable mixtures to solubilize hydrophobic food-related substances. Furthermore, micellar formation is a complex process in which a variety of intermolecular interactions determine the course of formation and most important are the hydrophobic and hydrophilic interactions between surfactant–solvent and solvent–solvent. Glycols are organic compounds that belong to the group of alcohols. Among them, propane-1,2-diol (PG) is a substance commonly used a

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Zueva, Olga S., Mariia A. Kazantseva, and Yuriy F. Zuev. "Nanosized Being of Ionic Surfactant Micelles: An Advanced View on Micellization Process." Colloids and Interfaces 9, no. 2 (2025): 15. https://doi.org/10.3390/colloids9020015.

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An advanced model of ionic surfactant micellization has been developed. The structural and kinetic properties of micelles were analyzed in parallel from a universally accepted point of view and taking into account the principles of quantum mechanics, the phenomenon of ion pairing in the Stern layer, the symmetry considerations, and the chaos theory. It was shown that a micelle can be considered as a layered fullerene-like structure with a cavity in its center, possessing the solid-like properties of micelles in radial directions and the liquid-like properties in the perpendicular ones, allowin

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