Journal of Surfactants and Detergents最新文献_第3页

Surfactant monolayers at oil–water interfaces. Behavior upon compression and relation to emulsion stability 油水界面表面活性剂单层。压缩后的行为及其与乳状液稳定性的关系

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-29 DOI: 10.1002/jsde.12806

Laura Wallon, Anniina Salonen, Dominique Langevin

{"title":"Surfactant monolayers at oil–water interfaces. Behavior upon compression and relation to emulsion stability","authors":"Laura Wallon, Anniina Salonen, Dominique Langevin","doi":"10.1002/jsde.12806","DOIUrl":"https://doi.org/10.1002/jsde.12806","url":null,"abstract":"Surfactant monolayers modify the surface tension of fluid surfaces, and they confer to the surfaces a resistance to mechanical perturbances, such as compression or dilatation. The resistance can be characterized by elastic and viscous moduli, that affect the phenomena involving the motion of liquid surfaces such as wetting, two-phase flow, foaming and emulsification, rheology and stability of foams and emulsions. Some of these phenomena, for instance coalescence of bubbles or drops, are extremely rapid, and although coalescence seems correlated with the elastic compression modulus, no quantitative comparison has been made. Indeed, this modulus is frequency dependent, and cannot be measured by most conventional devices at the short timescales during which coalescence events occur. In this paper, we first review the current understanding on foam and emulsion stability, highlighting the role of surface rheology in the stability of these systems, important for their formulation. We present tension measurements for various surfactant systems, nonionic and cationic, at oil–water interfaces. We show calculations of the high frequency elastic modulus using the Gibbs adsorption equation and compare the results to previous measurements at air–water interfaces. The moduli measured imposing a rapid expansion of the monolayers are consistently smaller, in particular at oil–water interfaces. We discuss the possible origin of the differences between the two types of interfaces.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 3","pages":"423-435"},"PeriodicalIF":1.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsde.12806","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939602","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}

引用次数: 0

Study on the relationship between surface tension and dilational visco-elasticity with foam stability 泡沫稳定性与表面张力、膨胀粘弹性关系的研究

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-25 DOI: 10.1002/jsde.12801

Tingting Zhao, Xianzhong Zhang, Yang Chen, Lishuai Jing, Zhiming Bao

{"title":"Study on the relationship between surface tension and dilational visco-elasticity with foam stability","authors":"Tingting Zhao, Xianzhong Zhang, Yang Chen, Lishuai Jing, Zhiming Bao","doi":"10.1002/jsde.12801","DOIUrl":"https://doi.org/10.1002/jsde.12801","url":null,"abstract":"The replacement of fluorine-free foam is imminent, but to date, no fluorine-free foam has reached comparable fire extinguishing performance to AFFF (aqueous film forming foam). The stability of firefighting foam significantly affects its extinguishing performance. In order to better understand the influence of foam formulation physical properties on foam stability, we correlate the foam stability with surface tension and dilational visco-elasticity based on the AFFF formulation. The results show that, the foam stability rising steadily with the decrease of surface tension, which indicates that low surface tension favors the improvement of foam stability. However, when at the studied highest surface tension, the foam stability elevates slightly instead, demonstrating the surface tension is not the determinant of foam stability. By contrast, the dilational visco-elasticity shows a closer correlation with foam stability for the consistent tendency. In the case of constantly changing disturbance frequency, the interface dilational elasticity shows a trend of first increasing and then decreasing with the rise of disturbance frequency, whereas the interface dilational viscosity is completely opposite. Different relaxation processes show up for different samples. More attention can be paid to the regulation of dilational visco-elasticity in the development of fluorine-free foams, so as to improve their extinguishing ability.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 3","pages":"411-421"},"PeriodicalIF":1.6,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939647","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}

引用次数: 0

Special issue: Industrial surfactants R&D—A tribute to George A. Smith 特刊：工业表面活性剂研发--向 George A. Smith 致敬

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-23 DOI: 10.1002/jsde.12812

Gregory P. Dado PhD, Nancy A. Falk PhD, Aslin Izmitli PhD, Thu Landry PhD, Philip K. Vinson PhD

引用次数: 0

Addressing the non-ideality of an application relevant surfactant mixture within the hydrophilic–lipophilic-deviation concept 在亲水-亲脂-偏差概念中，解决了与应用相关的表面活性剂混合物的非理想性

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-22 DOI: 10.1002/jsde.12809

Jörn Phillipp Optatzi, Peter Schmiedel, Birgit Glüsen, Mahdis Hesami

{"title":"Addressing the non-ideality of an application relevant surfactant mixture within the hydrophilic–lipophilic-deviation concept","authors":"Jörn Phillipp Optatzi, Peter Schmiedel, Birgit Glüsen, Mahdis Hesami","doi":"10.1002/jsde.12809","DOIUrl":"https://doi.org/10.1002/jsde.12809","url":null,"abstract":"In cleaning products, selecting the right surfactants for the specific soil or contamination is crucial. The hydrophilic–lipophilic deviation (HLD) concept serves as a useful formulation tool by describing the interactions between surfactants, oil and water. However, for mixtures of ionic and non-ionic surfactants, the HLD concept assumes ideal mixing behavior, which does not hold true. Therefore, interactions between different surfactants must be considered. This can be achieved by introducing the interaction term GEX/RT. Evaluating this interaction term using a set of equilibrated surfactant/oil/water (SOW) systems under various conditions is both time-consuming and resource intensive. This work aims to demonstrate the rapid determination of this interaction term using the dynamic phase salinity inversion (DSPI) method. We determined the phase behavior of a ternary surfactant system, consisting of sodium dioctyl sulfosuccinate, alkyl polyglucoside, and fatty alcohol ethoxylate, through both equilibrated systems and the DSPI method. Differences between the theoretical HLD calculations and actual experiments allowed us to access interaction terms. To validate GEX/RT obtained by DSPI, we employed net-average-curvature concept to model the interfacial tension under different conditions. Spinning drop measurements showed excellent agreement between theoretical and measured values, confirming the applicability of DSPI for determining interactions in this surfactant system.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 3","pages":"401-410"},"PeriodicalIF":1.6,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsde.12809","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939593","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}

引用次数: 0

Investigation of the detergency properties of mixtures of biocides and nonionic surfactants using a new simplified hard surface cleaning method 用一种新的简化的硬表面清洗方法研究杀菌剂与非离子表面活性剂混合物的去污性

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-19 DOI: 10.1002/jsde.12811

Veronika Yavrukova, Emma Cooban, Isabel Blanco, Elias Pambou, Krastanka Marinova, Jordan Petkov

引用次数: 0

Effect of droplet charge density on stabilization of oil-in-dispersion emulsions co-stabilized by binary mixed surfactants and nanoparticles 液滴电荷密度对二元混合表面活性剂和纳米颗粒共稳定油分散乳状液稳定性的影响

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-14 DOI: 10.1002/jsde.12810

Wanqing Zhang, Jianzhong Jiang, Zhenggang Cui

{"title":"Effect of droplet charge density on stabilization of oil-in-dispersion emulsions co-stabilized by binary mixed surfactants and nanoparticles","authors":"Wanqing Zhang, Jianzhong Jiang, Zhenggang Cui","doi":"10.1002/jsde.12810","DOIUrl":"https://doi.org/10.1002/jsde.12810","url":null,"abstract":"Ionic surfactant and similarly charged nanoparticles can co-stabilize oil-in-dispersion (OID) emulsions at extremely low concentrations (0.001 cmc/0.001 wt%), in which particles do not adsorb at the oil/water interface but distribute in the aqueous phase forming a dispersion. In this paper, the effect of droplet charge density on stabilization of the n-decane-in-water OID emulsion was examined by using a cetyl trimethyl ammonium bromide (CTAB)/C12B (dodecyl dimethyl carboxyl betaine) binary mixture at a low fixed total concentration (0.01 mM) with varying molar fractions of CTAB. A model based on the Derjaguin-Landau-Verwey-Overbeek (DLVO) theory is proposed to calculate interaction energies between droplets and between droplets and particles. It is found that the droplet charge density can be well compensated by particle concentration along the stabilization boundary, and the OID emulsion still follows the DLVO stabilization. Particles tend to surround droplets at large distances but may form a monolayer between approaching droplets at shorter distances, which significantly reduces the van der Waals attraction between droplets. In addition, the induced auxiliary droplet–particle repulsion is proportional to the number of particles per unit area of droplet surfaces, which together with the droplet–droplet repulsion ensures a large total repulsion preventing droplets from flocculation and coalescence. This work explains quantitatively the stabilization of OID emulsions, which have potential applications in emulsion products such as foods, cosmetics, pesticides, and various industrial emulsion systems. Moreover, the development of the OID emulsions represents an important advancement in green chemistry as it substantially reduces the required amounts of emulsifiers and their environmental impact after use.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"373-387"},"PeriodicalIF":1.6,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565303","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}

引用次数: 0

Preparation and performance evaluation of CNF-enhanced polyether-modified polysiloxane defoamer cnf增强聚醚改性聚硅氧烷消泡剂的制备及性能评价

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-11 DOI: 10.1002/jsde.12808

Yifei Gao, Jian Wang, Dehua Xu, Yuxuan Lin, Wenbao Song, Yubo Wang, Fei Xu, Gang Chen

{"title":"Preparation and performance evaluation of CNF-enhanced polyether-modified polysiloxane defoamer","authors":"Yifei Gao, Jian Wang, Dehua Xu, Yuxuan Lin, Wenbao Song, Yubo Wang, Fei Xu, Gang Chen","doi":"10.1002/jsde.12808","DOIUrl":"https://doi.org/10.1002/jsde.12808","url":null,"abstract":"In this article, polyether-modified polysiloxanes were synthesized by the reaction of poly(methyl hydrogen siloxane) (PMHS) with Allyl alcohol polyether B-400. FT-IR, laser particle size analysis, hydrophilic–lipophilic balance (HLB) value test, and surface tension measurements were used to characterize its structures and properties. The results show that the control law for the HLB value of polyether-modified polysiloxanes was obtained as follow: the HLB value increases with increasing hydrogen content of PMHS. When the polyether-modified polysiloxanes were used to emulsify the polysiloxane, at the HLB value of 10.5, the average particle size of the emulsion was about 0.23 μm with a narrow particle size distribution. The emulsion has good emulsifying and dispersing properties, as well as excellent foam elimination and foam inhibition performance. When the cellulose nanofibrils (CNF) was used as a protective agent for the preparing of the polysiloxane defoamer, the stability of the emulsion does not affect, but its foam elimination and foam inhibition of emulsion can be further improved at the presence of CNF. The lowest surface tension of CNF-enhanced polyether-modified polysiloxane defoamer is about 22.4 mN m−1, which has good surface property. When the concentration of CNF-enhanced polyether-modified polysiloxane defoamer was 0.1 g L−1, the foam elimination time and foam inhibition time were 5.8 s and 38 min, respectively, at the temperature (80°C) and alkali environment (pH 13).","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"363-372"},"PeriodicalIF":1.6,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565249","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}

引用次数: 0

Lamellar liquid crystals in commercial polyether-modified polydimetilsiloxanes for coating applications: Structure, rheology and cross-linking 涂覆用聚醚改性聚二甲硅氧烷的层状液晶：结构、流变性和交联

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-11 DOI: 10.1002/jsde.12802

Fatemeh Soleimani Rokni, Susana Vilchez, Carlos Rodríguez-Abreu

引用次数: 0

Study on the composition and removal effect of human odor on moisture-wicking fabric during home laundry 吸湿排汗织物在家庭洗衣过程中人体气味的组成及去除效果研究

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-10 DOI: 10.1002/jsde.12805

Hui Chen, Liujun Pei, Wenhua Shi, Siping Gong, Xiaomin Gu, Hongjuan Zhang, Qun Yang, Gang Sun, Jiping Wang

{"title":"Study on the composition and removal effect of human odor on moisture-wicking fabric during home laundry","authors":"Hui Chen, Liujun Pei, Wenhua Shi, Siping Gong, Xiaomin Gu, Hongjuan Zhang, Qun Yang, Gang Sun, Jiping Wang","doi":"10.1002/jsde.12805","DOIUrl":"https://doi.org/10.1002/jsde.12805","url":null,"abstract":"Armpit odors of different individuals were qualitatively and quantitatively collected and analyzed by gas chromatography–mass spectrometry (GC–MS). The results showed that human armpit odor contained 27 substances, including acids, ketones, alcohols, alkanes, and two noticeable odorants of n-nonaldehyde and dodecanol. A headspace solid-phase microextraction/gas chromatography–mass spectrometry method determined that both n-nonaldehyde and dodecanol with distinct characteristic peaks were common chemicals found in the body odors with detection limits at 46.88 and 17.50 ng/L, respectively. The limits of quantitation of both were 156.25 and 59.33 ng/L with relative standard deviation (RSD) less than 5%, and recoveries ranged from 85% to 115%, respectively. The removal of body odor on a moisture-wicking polyester fabric was quantified through by placement, washing, and deodorant finishing methods. The placement method needs at least 2 days for removing the majority of the odor. Sports washing liquid was the best detergent to remove odors with a removal rate of 76.44% for n-nonaldehyde and 87.88% for dodecanol. Deodorant finishing is a convenient and efficient method for removing odors with masking effect of added fragrance. The deodorants were able to remove over 85% of n-nonaldehyde and 75% of dodecanol after drying, indicating that deodorant treatment is an effective method for removing odorous substances. This successful approach in eliminating human odors could offer valuable insights for the advancement of sportswear and hygiene textiles.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"345-354"},"PeriodicalIF":1.6,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565279","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}

引用次数: 0

Effect of emulsification step on calcium carbonate encapsulated eicosane and incorporation into geopolymer 乳化步骤对碳酸钙包封二十烷并掺入地聚合物的影响

IF 1.6 4区工程技术

Journal of Surfactants and Detergents Pub Date : 2024-10-02 DOI: 10.1002/jsde.12803

Y. Boland, G. Fontaine, S. Bourbigot, C. Pierlot

{"title":"Effect of emulsification step on calcium carbonate encapsulated eicosane and incorporation into geopolymer","authors":"Y. Boland, G. Fontaine, S. Bourbigot, C. Pierlot","doi":"10.1002/jsde.12803","DOIUrl":"https://doi.org/10.1002/jsde.12803","url":null,"abstract":"The effect of the emulsification process of the organic n-eicosane as a phase change material (PCM) in an aqueous solution of sodium dodecyl sulfate (SDBS) as a surfactant has been studied regarding the properties of the CaCO3 microcapsules. Such microcapsules aim to limit interactions between the PCM and the matrix (i.e., leakage and unwanted reactions). Optical and scanning electron microscopy (SEM) shows that the mean size of the n-eicosane capsule is of the order of 5 μm. However, large non-spherical objects which could be clusters of flocculated capsules or the results of encapsulation of coalescing n-eicosane droplets, are observed, particularly when mechanical stirring (MS) is used rather than when an ultra-turrax (UT) or sonotrode (S) is used in the initial emulsification step. These large, partially encapsulated objects could be the cause of the poor results in leakage tests. It is possible to encapsulate n-eicosane inside a calcium carbonate shell, with a greater than 50% encapsulation ratio. The yield of encapsulated n-eicosane measured by differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) is similar and shows that 55% n-eicosane core in CaCO3 shell can be produced. Up to 33 wt.% CaCO3 microcapsules (with 55% n-eicosane content) have been successfully incorporated into fresh geopolymer paste. This incorporation of 18% (55% × 33%) of PCM does not modify the hardening conditions of the geopolymer since demolding was possible after 2 days at room temperature. DSC curves confirm that the melting reaction with n-eicosane is conserved inside the hardened geopolymer.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"333-343"},"PeriodicalIF":1.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsde.12803","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565182","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}

引用次数: 0