Ravan A. Rahimov, Shafiga M. Nasibova, Inara V. Amirova, Gulnara A. Ahmadova, Sahil Z. Hamidov, Sevda A. Muradova
Quaternary ammonium-type surfactants were synthesized by N-alkylation reaction of ethanolamines with 1-iododecane. These resulting cationic surfactants were subsequently converted into ionic liquid-type cationic surfactants by replacing the iodide counterion with an acetate ion. The surface activities of those surfactants were determined using the droplet-breaking method, while their specific electrical conductivities were measured by the conductometric method. Based on these measurements, the surface activity parameters of both surfactant classes were calculated and compared. The biocidal properties of the ionic liquid cationic surfactants against various bacteria and fungi were assessed using the disk diffusion method. Additionally, the petroleum-collecting and petroleum-dispersing abilities of the ionic liquid surfactants, containing acetate counterions, were evaluated by analyzing their efficiency in collecting a thin petroleum layer on the water surface.
{"title":"Ionic Liquid Cationic Surfactants With a Decyl Hydrophobic Chain: Effects of Head Group and Counterion","authors":"Ravan A. Rahimov, Shafiga M. Nasibova, Inara V. Amirova, Gulnara A. Ahmadova, Sahil Z. Hamidov, Sevda A. Muradova","doi":"10.1002/jsde.12879","DOIUrl":"https://doi.org/10.1002/jsde.12879","url":null,"abstract":"<div>\u0000 \u0000 <p>Quaternary ammonium-type surfactants were synthesized by N-alkylation reaction of ethanolamines with 1-iododecane. These resulting cationic surfactants were subsequently converted into ionic liquid-type cationic surfactants by replacing the iodide counterion with an acetate ion. The surface activities of those surfactants were determined using the droplet-breaking method, while their specific electrical conductivities were measured by the conductometric method. Based on these measurements, the surface activity parameters of both surfactant classes were calculated and compared. The biocidal properties of the ionic liquid cationic surfactants against various bacteria and fungi were assessed using the disk diffusion method. Additionally, the petroleum-collecting and petroleum-dispersing abilities of the ionic liquid surfactants, containing acetate counterions, were evaluated by analyzing their efficiency in collecting a thin petroleum layer on the water surface.</p>\u0000 </div>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 6","pages":"1259-1269"},"PeriodicalIF":1.8,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145442948","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
CO2-responsive switchable microemulsions have attracted significant attention due to their substantial potential in organic synthesis, drug delivery, and nanomaterial preparation. This study presents a microemulsion system composed of N′-dodecyl-N,N-dimethyl acetamidine, 1-hexanol, brine, and tetradecane. The phase behavior of the microemulsion system was systematically investigated through a salinity scan to access its salinity dependence, while the solubilization ratios were also evaluated. Furthermore, the microstructural characteristics of the microemulsion system were examined using dynamic light scattering, small-angle X-ray scattering, and interfacial tension measurements. A transition from Winsor I to Winsor III, and subsequently to Winsor II, was observed in the alkyl acetamidine surfactant-based microemulsion as salinity increased, with the smallest domain size and most ordered microstructure occurring near the optimal salinity. Notably, the three-phase microemulsion system demonstrated the ability to reversibly switch between emulsification and demulsification upon CO2 or N2 injection, showcasing its dynamic responsiveness. This study enhances the understanding of CO2-responsive microemulsions and offers potential pathways for sustainable chemical processes.
{"title":"Alkyl Acetamidine Surfactant-Based Microemulsion and Its CO2-Responsive Reversible Switching Properties","authors":"Sihang Ma, Yuanyuan Wang, Qingfeng Hou, Yifeng Liu, Xiaoling Yi, Zhuoyan Zhu, Zhidong Chang","doi":"10.1002/jsde.12878","DOIUrl":"https://doi.org/10.1002/jsde.12878","url":null,"abstract":"<div>\u0000 \u0000 <p>CO<sub>2</sub>-responsive switchable microemulsions have attracted significant attention due to their substantial potential in organic synthesis, drug delivery, and nanomaterial preparation. This study presents a microemulsion system composed of <i>N</i>′-dodecyl-<i>N</i>,<i>N</i>-dimethyl acetamidine, 1-hexanol, brine, and tetradecane. The phase behavior of the microemulsion system was systematically investigated through a salinity scan to access its salinity dependence, while the solubilization ratios were also evaluated. Furthermore, the microstructural characteristics of the microemulsion system were examined using dynamic light scattering, small-angle X-ray scattering, and interfacial tension measurements. A transition from Winsor I to Winsor III, and subsequently to Winsor II, was observed in the alkyl acetamidine surfactant-based microemulsion as salinity increased, with the smallest domain size and most ordered microstructure occurring near the optimal salinity. Notably, the three-phase microemulsion system demonstrated the ability to reversibly switch between emulsification and demulsification upon CO<sub>2</sub> or N<sub>2</sub> injection, showcasing its dynamic responsiveness. This study enhances the understanding of CO<sub>2</sub>-responsive microemulsions and offers potential pathways for sustainable chemical processes.</p>\u0000 </div>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 6","pages":"1247-1257"},"PeriodicalIF":1.8,"publicationDate":"2025-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145442982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
RETRACTION:A.M. Atta and H.A. Al-Lohedan, “ Influence of Nonionic Rosin Surfactants on Surface Activity of Silica Particles and Stability of Oil in Water Emulsions,” Journal of Surfactants and Detergents17, no. 5 (2014): 1043–1053, https://doi.org/10.1007/s11743-014-1589-y.
The above article, published online on 1 May 2014 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Douglas G. Hayes; American Oil Chemists' Society; and Wiley Periodicals LLC. The retraction has been agreed because Figure 6D was first published as Figure 4B in an earlier article by two of the authors, but with a completely different description (Atta et al., 2013; https://doi.org/10.1155/2013/580607). The authors were not able to provide an explanation for this duplication. Therefore, the journal and publisher agree that the article must be retracted. The author Ayman M. Atta disagrees with this decision.
声明:点Atta和H.A. Al-Lohedan，“非离子型松香表面活性剂对二氧化硅颗粒表面活性和水乳状液中油稳定性的影响”，《表面活性剂与洗涤剂杂志》，第17期。5 (2014): 1043-1053, https://doi.org/10.1007/s11743-014-1589-y。上述文章于2014年5月1日在Wiley在线图书馆（wileyonlinelibrary.com）上发表，经期刊主编Douglas G. Hayes；美国石油化学家学会；和Wiley期刊有限责任公司。由于图6D最初以图4B的形式发表在两位作者较早的文章中，但描述完全不同(Atta et al., 2013；https://doi.org/10.1155/2013/580607)。作者无法对这种重复提供解释。因此，期刊和出版商一致认为这篇文章必须撤回。作者艾曼·阿塔（Ayman M. Atta）不同意这一决定。
{"title":"RETRACTION: Influence of Nonionic Rosin Surfactants on Surface Activity of Silica Particles and Stability of Oil in Water Emulsions","authors":"","doi":"10.1002/jsde.12858","DOIUrl":"10.1002/jsde.12858","url":null,"abstract":"<p>\u0000 <b>RETRACTION:</b> <span>A.M. Atta</span> and <span>H.A. Al-Lohedan</span>, “ <span>Influence of Nonionic Rosin Surfactants on Surface Activity of Silica Particles and Stability of Oil in Water Emulsions</span>,” <i>Journal of Surfactants and Detergents</i> <span>17</span>, no. <span>5</span> (<span>2014</span>): <span>1043</span>–<span>1053</span>, https://doi.org/10.1007/s11743-014-1589-y.\u0000 </p><p>The above article, published online on 1 May 2014 in Wiley Online Library (wileyonlinelibrary.com), has been retracted by agreement between the journal Editor-in-Chief, Douglas G. Hayes; American Oil Chemists' Society; and Wiley Periodicals LLC. The retraction has been agreed because Figure 6D was first published as Figure 4B in an earlier article by two of the authors, but with a completely different description (Atta et al., 2013; https://doi.org/10.1155/2013/580607). The authors were not able to provide an explanation for this duplication. Therefore, the journal and publisher agree that the article must be retracted. The author Ayman M. Atta disagrees with this decision.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 4","pages":""},"PeriodicalIF":1.8,"publicationDate":"2025-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsde.12858","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144524930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Isothermal titration calorimetric (ITC) study can probe critical micelle concentration (CMC) as well as the associated thermodynamics of surfactant aggregation. Micellization behavior of two bile salts, sodium cholate (NaC) and sodium deoxycholate (NaDC) were evaluated through ITC studies; subsequently the enthalpy change (), Gibbs free energy change () and entropy change () of demicellization processes were also evaluated in the presence of varied concentration of an ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim]BF4) and at different temperatures at ascertain concentration of IL (1.0 mM). In order to distinguish the effect of IL from the corresponding common salt, studies were also carried out in aqueous sodium tetrafluoroborate (NaBF4) medium. CMC values decrease with increasing IL/NaBF4 concentration and increase with increasing temperature. CMC reduction in case of NaDC-NaBF4 system is more prominent, while considering temperature variation, the CMC rise in NaC-[bmim]BF4 system is more significant.
等温滴定量热法（ITC）研究可以探测临界胶束浓度（CMC）以及与之相关的表面活性剂聚集热力学。通过ITC研究评价了胆酸钠（NaC）和去氧胆酸钠（NaDC）两种胆盐的胶束行为；随后是焓变（Δ H demic 0）；吉布斯自由能变化（Δ G demic 0）和熵变(Δ S demic 0)在不同浓度离子液体（IL）的存在下，也评估了半胶化过程。1-丁基-3-甲基咪唑四氟硼酸盐（[bmim]BF4）和不同温度下确定浓度的IL （1.0 mM）。为了区分IL与相应的普通盐的作用，还在四氟硼酸钠（NaBF4）水溶液中进行了研究。CMC值随IL/NaBF4浓度的升高而降低，随温度的升高而升高。NaC- nabf4体系中CMC的降低更为显著，而考虑温度变化，NaC-[bmim]BF4体系中CMC的升高更为显著。Δ H值在很大程度上取决于温度。温度升高导致Δ G值升高。但NaC和NaDC均随IL/NaBF4浓度的增加而降低。温度对Δ G值变化的影响不太显著过程是由熵驱动的过程。温度变化对Δ H demic 0的影响大于添加剂浓度。除了对IL诱导胶束化的基本认识外，这些全面的研究还有望在多种科学和工业应用中得到应用。
{"title":"Thermodynamic Analysis on Ionic Liquid Induced Aggregation Behavior of Bile Salts: An Isothermal Titration Calorimetric Approach","authors":"Habiba Sultana, Maitreyee Mitra, Sahadeb Panja, Maidul Hossain, Amiya Kumar Panda","doi":"10.1002/jsde.12875","DOIUrl":"https://doi.org/10.1002/jsde.12875","url":null,"abstract":"<div>\u0000 \u0000 <p>Isothermal titration calorimetric (ITC) study can probe critical micelle concentration (<i>CMC</i>) as well as the associated thermodynamics of surfactant aggregation. Micellization behavior of two bile salts, sodium cholate (NaC) and sodium deoxycholate (NaDC) were evaluated through ITC studies; subsequently the enthalpy change (<span></span><math>\u0000 \u0000 <semantics>\u0000 \u0000 <mrow>\u0000 \u0000 <msubsup>\u0000 \u0000 <mrow>\u0000 \u0000 <mi>Δ</mi>\u0000 \u0000 <mi>H</mi>\u0000 </mrow>\u0000 \u0000 <mtext>demic</mtext>\u0000 \u0000 <mn>0</mn>\u0000 </msubsup>\u0000 </mrow>\u0000 </semantics>\u0000 </math>), Gibbs free energy change (<span></span><math>\u0000 \u0000 <semantics>\u0000 \u0000 <mrow>\u0000 \u0000 <msubsup>\u0000 \u0000 <mrow>\u0000 \u0000 <mi>Δ</mi>\u0000 \u0000 <mi>G</mi>\u0000 </mrow>\u0000 \u0000 <mtext>demic</mtext>\u0000 \u0000 <mn>0</mn>\u0000 </msubsup>\u0000 </mrow>\u0000 </semantics>\u0000 </math>) and entropy change (<span></span><math>\u0000 \u0000 <semantics>\u0000 \u0000 <mrow>\u0000 \u0000 <msubsup>\u0000 \u0000 <mrow>\u0000 \u0000 <mi>Δ</mi>\u0000 \u0000 <mi>S</mi>\u0000 </mrow>\u0000 \u0000 <mtext>demic</mtext>\u0000 \u0000 <mn>0</mn>\u0000 </msubsup>\u0000 </mrow>\u0000 </semantics>\u0000 </math>) of demicellization processes were also evaluated in the presence of varied concentration of an ionic liquid (IL) 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim]BF<sub>4</sub>) and at different temperatures at ascertain concentration of IL (1.0 mM). In order to distinguish the effect of IL from the corresponding common salt, studies were also carried out in aqueous sodium tetrafluoroborate (NaBF<sub>4</sub>) medium. <i>CMC</i> values decrease with increasing IL/NaBF<sub>4</sub> concentration and increase with increasing temperature. <i>CMC</i> reduction in case of NaDC-NaBF<sub>4</sub> system is more prominent, while considering temperature variation, the <i>CMC</i> rise in NaC-[bmim]BF<sub>4</sub> system is more significant. <span></span><math>\u0000 \u0000 <semantics>\u0000 \u0000 <mrow>\u0000 \u0000 <msubsup>\u0000 ","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 6","pages":"1235-1245"},"PeriodicalIF":1.8,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145443317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Lucas R. Moore, Christian Kemefa, Jordan Taylor, Gavin Erickson
Selecting the correct surfactant for gas injection enhanced oil recovery is essential for optimal yield during the extraction. The surfactants assist in the retention and effectiveness of the gas being injected by manipulating volume and viscosity through the foam properties being generated. Selection of the right surfactant will determine the foam volume, bubble size, and overall rate of foam deterioration. Unfortunately, not every enhanced oil recovery (EOR) site around the world has access to the same water quality; thus, each site must face the challenges of varying water chemistry. This article presents the experimental work done to screen and rank three zwitterionic surfactant families by evaluating the foam properties and impact on interfacial tension with crude oil in varying water sources.
{"title":"Impact of Water Chemistry on Zwitterionic Foamers for Enhanced Oil Recovery","authors":"Lucas R. Moore, Christian Kemefa, Jordan Taylor, Gavin Erickson","doi":"10.1002/jsde.12874","DOIUrl":"https://doi.org/10.1002/jsde.12874","url":null,"abstract":"<div>\u0000 \u0000 <p>Selecting the correct surfactant for gas injection enhanced oil recovery is essential for optimal yield during the extraction. The surfactants assist in the retention and effectiveness of the gas being injected by manipulating volume and viscosity through the foam properties being generated. Selection of the right surfactant will determine the foam volume, bubble size, and overall rate of foam deterioration. Unfortunately, not every enhanced oil recovery (EOR) site around the world has access to the same water quality; thus, each site must face the challenges of varying water chemistry. This article presents the experimental work done to screen and rank three zwitterionic surfactant families by evaluating the foam properties and impact on interfacial tension with crude oil in varying water sources.</p>\u0000 </div>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 6","pages":"1225-1234"},"PeriodicalIF":1.8,"publicationDate":"2025-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145443326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tingli Que, Dan Guan, Huoxin Luan, Patiguli Maimaiti, Hongzhi Shao, Keer Liu, Mingmin Zhang, Xin Su
Wormlike micelles are dynamic, self-assembled structures formed by surfactants in aqueous solutions, characterized by their unique viscoelastic properties and potential applications in fields such as enhanced oil recovery, drag reduction, and personal care products. This study focuses on the rheological behavior of wormlike micellar systems formed by anionic double-tailed surfactants (DTS2-6, DTS2-8, and DTS2-10) with varying hydrophobic chain lengths. Longer hydrophobic chains, such as DTS2-10, were found to significantly enhance the viscoelasticity and promote the formation of wormlike micelles at lower concentrations. Rheological experiments revealed that DTS2-8 and DTS2-10 solutions exhibited shear-thinning behavior and viscoelastic fluid properties, conforming to the Maxwell fluid model at low to moderate frequencies. The Cole-Cole plots confirmed a fast-breaking regime, while increasing KCl concentrations initially promoted micelle elongation but led to branching and reduced viscosity at higher concentrations. These findings highlight the critical role of hydrophobic chain length and salt concentration in influencing micellar structure and rheological properties, offering valuable insights for optimizing their industrial and commercial applications.
{"title":"Rheological Properties of Wormlike Micelles Formed by Anionic Double-Tailed Surfactants With Varying Hydrophobic Chain Lengths","authors":"Tingli Que, Dan Guan, Huoxin Luan, Patiguli Maimaiti, Hongzhi Shao, Keer Liu, Mingmin Zhang, Xin Su","doi":"10.1002/jsde.12873","DOIUrl":"10.1002/jsde.12873","url":null,"abstract":"<div>\u0000 \u0000 <p>Wormlike micelles are dynamic, self-assembled structures formed by surfactants in aqueous solutions, characterized by their unique viscoelastic properties and potential applications in fields such as enhanced oil recovery, drag reduction, and personal care products. This study focuses on the rheological behavior of wormlike micellar systems formed by anionic double-tailed surfactants (DTS2-6, DTS2-8, and DTS2-10) with varying hydrophobic chain lengths. Longer hydrophobic chains, such as DTS2-10, were found to significantly enhance the viscoelasticity and promote the formation of wormlike micelles at lower concentrations. Rheological experiments revealed that DTS2-8 and DTS2-10 solutions exhibited shear-thinning behavior and viscoelastic fluid properties, conforming to the Maxwell fluid model at low to moderate frequencies. The Cole-Cole plots confirmed a fast-breaking regime, while increasing KCl concentrations initially promoted micelle elongation but led to branching and reduced viscosity at higher concentrations. These findings highlight the critical role of hydrophobic chain length and salt concentration in influencing micellar structure and rheological properties, offering valuable insights for optimizing their industrial and commercial applications.</p>\u0000 </div>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 5","pages":"1213-1221"},"PeriodicalIF":1.8,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Carolina Sousa Ponciano, Fernanda Brito Leite, Carine Cassimiro Cedrola, Julliana da Fonseca Alves, Ana Cláudia Chagas de Paula, Luiz Fernando Cappa de Oliveira, Thais Nogueira Barradas, Fernanda Maria Pinto Vilela
Alkyl polyglucosides (APG) are biodegradable, non-ionic surfactants from renewable sources with low ecotoxicity. This study developed a novel PEG-free nanoemulsion (NE) using APG to encapsulate Baccharis dracunculifolia essential oil (BDO) for skin repair. Cytotoxicity tests suggested no toxicity for BDO up to 500 μg/mL, and BDO significantly enhanced skin cell migration, indicating potential for skin repair. NEs (1:1 surfactant:BDO) had droplets < 60 nm and low polydispersity (PdI < 0.2). Preliminary NEs had pH > 11, attributed to APG, but adjusting to 6.5 increased droplet size (78 nm) and PdI to 0.3 due to APG interfacial activity changes. After 90 days, NE at pH 6.5 stabilized (~120 nm, PdI < 0.3), indicating a monodisperse system. Conversely, NE at pH 11.5 had a PdI > 0.3 after 21 days, suggesting coalescence. Spectroscopic analyses revealed structural changes in APG and BDO linked to pH variations, supporting the hypothesis of pH-dependent conformational changes in APG. The HET-CAM test indicated a lower irritation score (IS 3.0 ± 0.0) for NE at pH 6.5 vs. 11.5 (IS 3.6 ± 1.15), corroborating the importance of pH adjustment for safe topical applications. This study highlights APG-based NEs as promising for pharmaceuticals and cosmetics, emphasizing the need to further explore APG's pH-sensitive behavior.
{"title":"PEG-Free Nanoemulsions With Alkyl Polyglucoside and Baccharis dracunculifolia Essential Oil: Physicochemical Behavior, pH Dependence and Skin Repair Properties","authors":"Carolina Sousa Ponciano, Fernanda Brito Leite, Carine Cassimiro Cedrola, Julliana da Fonseca Alves, Ana Cláudia Chagas de Paula, Luiz Fernando Cappa de Oliveira, Thais Nogueira Barradas, Fernanda Maria Pinto Vilela","doi":"10.1002/jsde.12870","DOIUrl":"10.1002/jsde.12870","url":null,"abstract":"<p>Alkyl polyglucosides (APG) are biodegradable, non-ionic surfactants from renewable sources with low ecotoxicity. This study developed a novel PEG-free nanoemulsion (NE) using APG to encapsulate <i>Baccharis dracunculifolia</i> essential oil (BDO) for skin repair. Cytotoxicity tests suggested no toxicity for BDO up to 500 μg/mL, and BDO significantly enhanced skin cell migration, indicating potential for skin repair. NEs (1:1 surfactant:BDO) had droplets < 60 nm and low polydispersity (PdI < 0.2). Preliminary NEs had pH > 11, attributed to APG, but adjusting to 6.5 increased droplet size (78 nm) and PdI to 0.3 due to APG interfacial activity changes. After 90 days, NE at pH 6.5 stabilized (~120 nm, PdI < 0.3), indicating a monodisperse system. Conversely, NE at pH 11.5 had a PdI > 0.3 after 21 days, suggesting coalescence. Spectroscopic analyses revealed structural changes in APG and BDO linked to pH variations, supporting the hypothesis of pH-dependent conformational changes in APG. The HET-CAM test indicated a lower irritation score (IS 3.0 ± 0.0) for NE at pH 6.5 vs. 11.5 (IS 3.6 ± 1.15), corroborating the importance of pH adjustment for safe topical applications. This study highlights APG-based NEs as promising for pharmaceuticals and cosmetics, emphasizing the need to further explore APG's pH-sensitive behavior.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 5","pages":"1191-1211"},"PeriodicalIF":1.8,"publicationDate":"2025-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://aocs.onlinelibrary.wiley.com/doi/epdf/10.1002/jsde.12870","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013134","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tingli Que, Dan Guan, Hongzhi Shao, Keer Liu, Mingmin Zhang, Xin Su
This study investigates the solubility, phase behavior, and rheological properties of double-tailed surfactant (DTS-12) systems in the presence of hydrotropes, specifically BTAB and TMAB. The results show that the Krafft temperature of DTS-12 decreased significantly from over 70°C to below 30°C with increasing BTAB concentration, highlighting its superior “salting-in” effect compared to TMAB. The rheological analysis revealed that at a surfactant concentration of 50 mM and a BTAB concentration of 60 mM, the zero-shear viscosity reached approximately 103 mPa · s. Moreover, the DTS-12/BTAB formulation demonstrated good thermal resilience, retaining a viscosity exceeding 103 mPa · s even at a temperature of 90°C. These findings demonstrate the potential of DTS-12/BTAB systems for forming thermally stable and highly tunable wormlike micelles, which could be applied in advanced material development.
{"title":"Wormlike micelles containing hydrotrope and anionic double-tailed surfactants","authors":"Tingli Que, Dan Guan, Hongzhi Shao, Keer Liu, Mingmin Zhang, Xin Su","doi":"10.1002/jsde.12865","DOIUrl":"10.1002/jsde.12865","url":null,"abstract":"<p>This study investigates the solubility, phase behavior, and rheological properties of double-tailed surfactant (DTS-12) systems in the presence of hydrotropes, specifically BTAB and TMAB. The results show that the Krafft temperature of DTS-12 decreased significantly from over 70°C to below 30°C with increasing BTAB concentration, highlighting its superior “salting-in” effect compared to TMAB. The rheological analysis revealed that at a surfactant concentration of 50 mM and a BTAB concentration of 60 mM, the zero-shear viscosity reached approximately 10<sup>3</sup> mPa · s. Moreover, the DTS-12/BTAB formulation demonstrated good thermal resilience, retaining a viscosity exceeding 10<sup>3</sup> mPa · s even at a temperature of 90°C. These findings demonstrate the potential of DTS-12/BTAB systems for forming thermally stable and highly tunable wormlike micelles, which could be applied in advanced material development.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 5","pages":"1183-1189"},"PeriodicalIF":1.8,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Corosolic acid is receiving continued attention in medical therapy because of feasible antioxidant, anti-tumor, and anti-inflammatory activity. It is found naturally in several plant species, specifically Lagerstroemia speciosa (Banaba). However, its therapeutic activity is affected due to its poor solubility and absorption. The purpose of this research was to develop a nanoemulsion of corosolic acid to improve its poor water solubility and its therapeutic activity against the MCF-7 cell line. The nanoemulsion was formulated using the surfactants (Lemongrass oil and Cremophor EL) and the co-surfactant (Transcutol HP). The optimized formulation of the Corosolic acid nanoemulsion was characterized to evaluate its bioavailability and therapeutic efficacy. The MTT assay was conducted on the MCF-7 cell line to evaluate its anticancer efficacy. The average particle size of the optimized nanoemulsion formulation was 91.73 nm, with a Polydispersity Index of 0.229, indicating a monodispersed system. Transmission electron microscopy confirmed the spherical droplet shape. Additionally, the optimized corosolic acid nanoemulsion displayed a zeta potential of −4.91 mV, and the IC50 for the corosolic acid nanoemulsion was 76.1 ± 2.52 μg/mL. These findings demonstrate that the nanoemulsion form of Corosolic acid improves its poor water solubility, thereby improving its bioavailability and therapeutic efficacy.
{"title":"Development and Evaluation of Corosolic Acid Nanoemulsion for Potentiation Activity Against MCF-7 Breast Cancer Cells","authors":"Praveen Kumar Gaur, Vivek Chauhan, Shubra Chaturvedi, Ramza Hashmi, Preeti Sharma, Rosaline Mishra","doi":"10.1002/jsde.12866","DOIUrl":"10.1002/jsde.12866","url":null,"abstract":"<div>\u0000 \u0000 <p>Corosolic acid is receiving continued attention in medical therapy because of feasible antioxidant, anti-tumor, and anti-inflammatory activity. It is found naturally in several plant species, specifically \u0000 <i>Lagerstroemia speciosa</i>\u0000 (Banaba). However, its therapeutic activity is affected due to its poor solubility and absorption. The purpose of this research was to develop a nanoemulsion of corosolic acid to improve its poor water solubility and its therapeutic activity against the MCF-7 cell line. The nanoemulsion was formulated using the surfactants (Lemongrass oil and Cremophor EL) and the co-surfactant (Transcutol HP). The optimized formulation of the Corosolic acid nanoemulsion was characterized to evaluate its bioavailability and therapeutic efficacy. The MTT assay was conducted on the MCF-7 cell line to evaluate its anticancer efficacy. The average particle size of the optimized nanoemulsion formulation was 91.73 nm, with a Polydispersity Index of 0.229, indicating a monodispersed system. Transmission electron microscopy confirmed the spherical droplet shape. Additionally, the optimized corosolic acid nanoemulsion displayed a zeta potential of −4.91 mV, and the IC50 for the corosolic acid nanoemulsion was 76.1 ± 2.52 μg/mL. These findings demonstrate that the nanoemulsion form of Corosolic acid improves its poor water solubility, thereby improving its bioavailability and therapeutic efficacy.</p>\u0000 </div>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 5","pages":"1173-1182"},"PeriodicalIF":1.8,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Arnab Banerjee, Bidyut Debnath, Dhiman Ray, Bijan Das
This study explores the single molecular, self-assembly, and adsorption properties of a synthesized morpholinium-based surface active ionic liquid N-tetradecyl-N-methylmorpholinium bromide (TMB) in aqueous solutions. It utilizes the recently developed ORCA 6.0.1—an ab initio, Density Functional Theory, and semiempirical Self Consistent Field-Molecular Orbital package—along with the Solvent Model based on Density for optimization of the structure of TMB in its ground state. The micellization and adsorption properties of TMB were investigated by conductometry, tensiometry, and spectrofluorimetry. A confirmation of the cmc estimated by these techniques has also been obtained by a method suggested by the Moulik group (Basu Ray et al. 2006), which remained almost overlooked, based on the UV absorption of pyrene. Quantification of the thermodynamic parameters of micellization and interfacial parameters has been done. The aggregation number of TMB micelles has been computed from theoretical considerations and compared with that estimated using fluorimetry with pyrene as a probe. Results demonstrate distinctive features of the two hydrocarbon chains of TMB in contrast to the previous report. This study proves unequivocally that while the longer tetradecyl group (except its methylene group attached to the polar head) enters the micellar core, the methyl group attached to the quaternary nitrogen atom lies within the hydration sphere of the polar head. The micelles formed have been inferred to be spherical in shape both from theoretical analysis and FETEM. This study is expected to provide new knowledge towards the design and development of novel surface active ionic liquids with target specific applications.
本研究探讨了合成的基于形态学的表面活性离子液体n -十四烷基- n -甲基溴化morpholinium bromide （TMB）在水溶液中的单分子、自组装和吸附性能。利用最近开发的ORCA 6.0.1 - a从头算、密度泛函理论和半经验自洽场-分子轨道包合以及基于密度的溶剂模型对TMB基态结构进行优化。采用电导法、张力法和荧光光谱法研究了TMB的胶束化和吸附性能。Moulik小组（Basu Ray et al. 2006）提出的一种方法也证实了这些技术估计的cmc，但基于芘的紫外线吸收，该方法几乎被忽视了。量化了胶束化的热力学参数和界面参数。从理论上计算了TMB胶束的聚集数，并与以芘为探针的荧光法估计的聚集数进行了比较。结果表明，TMB的两条烃链具有明显的特征。本研究明确地证明，当较长的十四烷基（除了其与极性头相连的亚甲基）进入胶束核心时，与季氮原子相连的甲基位于极性头的水化球内。从理论分析和FETEM两方面推断，所形成的胶束为球形。该研究有望为设计和开发具有特定用途的新型表面活性离子液体提供新的知识。
{"title":"Single Molecular, Self-Assembly and Adsorption Properties of N-Tetradecyl-N-Methylmorpholinium Bromide in Aqueous Solutions","authors":"Arnab Banerjee, Bidyut Debnath, Dhiman Ray, Bijan Das","doi":"10.1002/jsde.12871","DOIUrl":"10.1002/jsde.12871","url":null,"abstract":"<div>\u0000 \u0000 <p>This study explores the single molecular, self-assembly, and adsorption properties of a synthesized morpholinium-based surface active ionic liquid N-tetradecyl-N-methylmorpholinium bromide (TMB) in aqueous solutions. It utilizes the recently developed ORCA 6.0.1—an ab initio, Density Functional Theory, and semiempirical Self Consistent Field-Molecular Orbital package—along with the Solvent Model based on Density for optimization of the structure of TMB in its ground state. The micellization and adsorption properties of TMB were investigated by conductometry, tensiometry, and spectrofluorimetry. A confirmation of the <i>cmc</i> estimated by these techniques has also been obtained by a method suggested by the Moulik group (Basu Ray et al. 2006), which remained almost overlooked, based on the UV absorption of pyrene. Quantification of the thermodynamic parameters of micellization and interfacial parameters has been done. The aggregation number of TMB micelles has been computed from theoretical considerations and compared with that estimated using fluorimetry with pyrene as a probe. Results demonstrate distinctive features of the two hydrocarbon chains of TMB in contrast to the previous report. This study proves unequivocally that while the longer tetradecyl group (except its methylene group attached to the polar head) enters the micellar core, the methyl group attached to the quaternary nitrogen atom lies within the hydration sphere of the polar head. The micelles formed have been inferred to be spherical in shape both from theoretical analysis and FETEM. This study is expected to provide new knowledge towards the design and development of novel surface active ionic liquids with target specific applications.</p>\u0000 </div>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 5","pages":"1149-1163"},"PeriodicalIF":1.8,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145013156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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