Journal of Surfactants and Detergents最新文献

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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,&nbsp;Liujun Pei,&nbsp;Wenhua Shi,&nbsp;Siping Gong,&nbsp;Xiaomin Gu,&nbsp;Hongjuan Zhang,&nbsp;Qun Yang,&nbsp;Gang Sun,&nbsp;Jiping Wang","doi":"10.1002/jsde.12805","DOIUrl":"https://doi.org/10.1002/jsde.12805","url":null,"abstract":"<p>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.</p>","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,&nbsp;G. Fontaine,&nbsp;S. Bourbigot,&nbsp;C. Pierlot","doi":"10.1002/jsde.12803","DOIUrl":"https://doi.org/10.1002/jsde.12803","url":null,"abstract":"<p>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 CaCO<sub>3</sub> 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 CaCO<sub>3</sub> shell can be produced. Up to 33 wt.% CaCO<sub>3</sub> 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.</p>","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
Properties of liquid foams stabilized by sugar-based surfactants and prepared under different conditions 不同条件下糖基表面活性剂稳定泡沫液体的性质
IF 1.6 4区 工程技术
Journal of Surfactants and Detergents Pub Date : 2024-10-02 DOI: 10.1002/jsde.12800
João Victor Cordeiro do Nascimento, Eduardo R. A. Lima, Natalie Preisig, Cosima Stubenrauch
{"title":"Properties of liquid foams stabilized by sugar-based surfactants and prepared under different conditions","authors":"João Victor Cordeiro do Nascimento,&nbsp;Eduardo R. A. Lima,&nbsp;Natalie Preisig,&nbsp;Cosima Stubenrauch","doi":"10.1002/jsde.12800","DOIUrl":"https://doi.org/10.1002/jsde.12800","url":null,"abstract":"<p>The study of foam stability is a subject of continuous research, due to the different fields of application foams are used in. In this study, foams stabilized with a family of nonionic sugar-based surfactants were investigated systematically. For this purpose, we changed the concentration (c &gt; cmc), the gas flow rate, and the disk porosity. The foam properties were evaluated by measuring the foam volume, the liquid fraction, and the bubble size distribution as a function of time. We observed good foamability for all conditions tested with a tendency towards increasing stability with increasing chain length and increasing head group size. For foams stabilized by the short chain surfactants β-C<sub>8</sub>G<sub>1</sub> and β-C<sub>8</sub>G<sub>2</sub> we observed a significant time evolution due to coarsening and coalescence, while foams stabilized with the longer chain surfactants hardly changed during the observation time. From an industrial point of view, our study helps to understand properties of foams generated under different conditions. We conclude that for the special family investigated here a very good performance can be expected for a broad variety of conditions.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"321-331"},"PeriodicalIF":1.6,"publicationDate":"2024-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/jsde.12800","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565181","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
Application of surfactants for the resolution of emulsions and suspensions in slop oil storage tanks, cleaning, and final disposal 表面活性剂在废油储罐中乳剂和悬浮液的溶解、清洗和最终处理中的应用
IF 1.6 4区 工程技术
Journal of Surfactants and Detergents Pub Date : 2024-10-01 DOI: 10.1002/jsde.12799
José López, Shirley Marfisi Valladares, Mario Lobo, Alix Guerrero, Carlos Carvajal
{"title":"Application of surfactants for the resolution of emulsions and suspensions in slop oil storage tanks, cleaning, and final disposal","authors":"José López,&nbsp;Shirley Marfisi Valladares,&nbsp;Mario Lobo,&nbsp;Alix Guerrero,&nbsp;Carlos Carvajal","doi":"10.1002/jsde.12799","DOIUrl":"https://doi.org/10.1002/jsde.12799","url":null,"abstract":"<p>In order to provide environmental solutions for the treatment of oily residues (slop oil) from refineries, formulations with surfactants were proposed according to the type of dispersed system of the slop (crude oil emulsified with water and/or solid particles). Samples were collected in 12 tanks located at the Oxialquilados Venezolanos C.A., Barcelona Plant (Anzoátegui, Venezuela), performing physicochemical tests for the identification of the dispersed system (solubility, wettability, stability, water content) and microscopic observations (morphology and particle size). The results indicated heterogeneous slop samples with a water content of 2%–60% vol/vol consisting of single or multiple emulsions, with droplet sizes between approximately 10 and 30 micron; others formed by sludge or suspension (solids/oil/water). For the destabilization of these systems, aqueous and organic cleaning solutions were designed, determining the percentage of oil separated in the bottle tests at optimal and simulated field conditions. Field tests with volume scaling of the slop tank reported efficiencies of 63%, 85%, and 100% when treating the slop TK-17, TK-36, EE, respectively; for the mixture (Pulmon-2) an efficiency of 47%. By combining heat treatment and two demulsifiers was possible to treat the slop TK-17 (multiple emulsion). A considerable volume of water can be drained from the tanks for use in the plant. In conclusion, the surfactant formulas were effective in the recovery of a significant amount of crude oil, making it feasible to return it to the generating entity.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"305-319"},"PeriodicalIF":1.6,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143564861","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
Experimental study on the effect of formulation and hydrodynamic variables on non-aqueous foams stability 配方及水动力变量对非水泡沫稳定性影响的实验研究
IF 1.6 4区 工程技术
Journal of Surfactants and Detergents Pub Date : 2024-09-21 DOI: 10.1002/jsde.12798
Alexis Cova-Bonillo, Rayda Patino-Camino, José Danglad-Flores, Guillermo Linero, Shirley Marfisi Valladares
{"title":"Experimental study on the effect of formulation and hydrodynamic variables on non-aqueous foams stability","authors":"Alexis Cova-Bonillo,&nbsp;Rayda Patino-Camino,&nbsp;José Danglad-Flores,&nbsp;Guillermo Linero,&nbsp;Shirley Marfisi Valladares","doi":"10.1002/jsde.12798","DOIUrl":"https://doi.org/10.1002/jsde.12798","url":null,"abstract":"<p>This study investigated the factors affecting the foamability and stability of non-aqueous foams. The researchers systematically varied the formulation (surfactant and alcohol type and concentration) and flow parameters (viscosity and gas flow rate). A custom setup with an 80 cm temperature-controlled glass column was used for foam generation. Among the tested non-ionic surfactants type sorbitan esters, the Span 80 (liquid W/O emulsifier and O/W emulsion stabilizer) produced the most voluminous foams. Interestingly, increasing surfactant concentration improved foamability but decreased foam stability. Similar trends were observed with the oil fraction and temperature (which affects viscosity). Higher viscosity led to more stable but less foamy structures. The study also explored the effect of different alcohols (ethanol to <i>n</i>-decanol) at varying flow rates. While all alcohols generated some foam at lower flow rates (200 mL/min N<sub>2</sub>), the effect diminished at higher flow rates. Additionally, foam stability and volume decreased with longer alcohol chains. These findings provide valuable insights into the interplay between formulation, flow conditions, and the resulting stability of non-aqueous foams.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"293-304"},"PeriodicalIF":1.6,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565418","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
Optimization and kinetic study of N-methyldiethanolamine-based esterquats production 基于 N-甲基二乙醇胺的酯喹生产的优化和动力学研究
IF 1.6 4区 工程技术
Journal of Surfactants and Detergents Pub Date : 2024-09-19 DOI: 10.1002/jsde.12797
Haliza Abdul Aziz, Rozita Yusoff, Ngoh Gek Cheng, Zainab Idris, Nur Aainaa Syahirah Ramli
{"title":"Optimization and kinetic study of N-methyldiethanolamine-based esterquats production","authors":"Haliza Abdul Aziz,&nbsp;Rozita Yusoff,&nbsp;Ngoh Gek Cheng,&nbsp;Zainab Idris,&nbsp;Nur Aainaa Syahirah Ramli","doi":"10.1002/jsde.12797","DOIUrl":"https://doi.org/10.1002/jsde.12797","url":null,"abstract":"<p>A sustainable alternative process for the production of bio-based esterquats via heterogeneous transesterification of palm methyl ester and N-methyldiethanolamine was developed. The transesterification process conditions over CaO/γ-Al<sub>2</sub>O<sub>3</sub> catalyst were optimized using Response Surface Methodology (RSM). At 146°C, 83.2% di-ester yield was obtained after 6 h when 4.1 wt% of the synthesized catalyst was used with 1.8:1 methyl ester/N-methyldiethanolamine molar ratio. CaO/γ-Al<sub>2</sub>O<sub>3</sub> was able to be reused for 3 cycles without a significant deactivation. A kinetic model was proposed based on irreversible second-order kinetics and it was the best-fitted experimental data with an overall reaction rate constants ranging between 0.0892 and 0.695 L/mol.min and an activation energy of 48 kJ/mol. The first experimental investigation on kinetic can be applied to provide insights on large scale reactor design for bio-based esterquats production. The synthesized esterquats was found to be readily biodegradable, as it reached the pass level of 60% of biodegradation within the period of incubation (28 days). It exhibits similar chemical and physical properties to the commercially available tallow-based esterquats, thus offering a potential substitute for the animal fat-based feedstock with the most abundantly available and renewable palm-based oleochemicals.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"277-291"},"PeriodicalIF":1.6,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143565384","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
Cloning, purification, and functional characterization of recombinant pullulanase from Bacillus cereus ATCC 14579 for improved detergent performance 从蜡样芽孢杆菌(Bacillus cereusATCC 14579)中克隆、纯化和鉴定重组戊二酸酶的功能,以改善洗涤剂性能
IF 1.6 4区 工程技术
Journal of Surfactants and Detergents Pub Date : 2024-08-29 DOI: 10.1002/jsde.12796
Asma Zafar, Ammara Masood, Ziaur Rahman, Attia Hamid, Mah Hoor Javed, Amna Zulfiqar, Samreen Fatima, Madood Makhdoom, Muhammad Nauman Aftab
{"title":"Cloning, purification, and functional characterization of recombinant pullulanase from Bacillus cereus ATCC 14579 for improved detergent performance","authors":"Asma Zafar,&nbsp;Ammara Masood,&nbsp;Ziaur Rahman,&nbsp;Attia Hamid,&nbsp;Mah Hoor Javed,&nbsp;Amna Zulfiqar,&nbsp;Samreen Fatima,&nbsp;Madood Makhdoom,&nbsp;Muhammad Nauman Aftab","doi":"10.1002/jsde.12796","DOIUrl":"10.1002/jsde.12796","url":null,"abstract":"<p>The present study outlines the approach that was employed for cloning, expression, and characterization of the recombinant pullulanase enzyme from <i>Bacillus cereus</i> ATCC 14579 into <i>Escherichia coli</i> BL21(DE3) using pET-25b (+) expression vector. The recombinant pullulanase enzyme was purified using ammonium sulfate precipitation and immobilized metal ion affinity chromatography (IMAC). The molecular mass of the purified pullulanase enzyme was measured using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) as 95 kDa. The purified recombinant pullulanase enzyme demonstrated significant thermal stability, maintaining its structural integrity and functionality at temperatures as high as 90°C over a period of 4 h. The inclusion of divalent metal ions, specifically Ca<sup>2+</sup> and Mg<sup>2+</sup>, had a positive effect on the activity of the pullulanase enzyme. Conversely, the presence of Co<sup>2+</sup> and EDTA (Ethylene Diamine Tetra Acetic acid) resulted in suppression of the enzyme activity. The purified pullulanase enzyme demonstrated remarkable resistance when exposed to organic solvents. The enzyme activity was notably decreased in the presence of SDS (Sodium Dodecyl Sulfate) while β-mercaptoethanol and tween-60 did not substantially affect the enzyme activity and stability which suggest its potential applicability in the detergent sector. This discovery indicates a potential approach to improve the effectiveness of currently available detergents in the marketplace.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"263-276"},"PeriodicalIF":1.6,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219653","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: Glycolipid biosurfactants: Synthesis, properties, and applications 特刊:糖脂生物表面活性剂:合成、特性和应用
IF 1.6 4区 工程技术
Journal of Surfactants and Detergents Pub Date : 2024-08-27 DOI: 10.1002/jsde.12795
Douglas G. Hayes, Richard D. Ashby, Lu-Kwang Ju, George A. Smith
{"title":"Special Issue: Glycolipid biosurfactants: Synthesis, properties, and applications","authors":"Douglas G. Hayes,&nbsp;Richard D. Ashby,&nbsp;Lu-Kwang Ju,&nbsp;George A. Smith","doi":"10.1002/jsde.12795","DOIUrl":"https://doi.org/10.1002/jsde.12795","url":null,"abstract":"","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"27 5","pages":"645-646"},"PeriodicalIF":1.6,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142174299","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
Synthesis and properties of sodium stearyl polyoxypropylene acetates 硬脂醇聚氧丙烯醋酸钠的合成与特性
IF 1.6 4区 工程技术
Journal of Surfactants and Detergents Pub Date : 2024-08-20 DOI: 10.1002/jsde.12791
Xueyi Hu, Ying Zhu, Liwen Shi, Kaiqiang Zhou, Yun Fang, Fuyi Li
{"title":"Synthesis and properties of sodium stearyl polyoxypropylene acetates","authors":"Xueyi Hu,&nbsp;Ying Zhu,&nbsp;Liwen Shi,&nbsp;Kaiqiang Zhou,&nbsp;Yun Fang,&nbsp;Fuyi Li","doi":"10.1002/jsde.12791","DOIUrl":"10.1002/jsde.12791","url":null,"abstract":"<p>Sodium stearyl polyoxypropylene acetates (SC<sub>18</sub>P<sub><i>p</i></sub>C, <i>p</i> = 3, 6, 9) were synthesized through a two-step process involving propoxylation of stearyl alcohol and subsequent carboxymethylation. Stearyl polyoxypropylene acetic acids (C<sub>18</sub>P<sub><i>p</i></sub>C, <i>p</i> = 3, 6, 9), the acidified products of SC<sub>18</sub>P<sub><i>p</i></sub>C, were characterized by FT-IR, <sup>1</sup>H-NMR, and ESI-MS. The properties of SC<sub>18</sub>P<sub><i>p</i></sub>C were extensively investigated and compared with sodium dodecanoate (SD) and sodium stearate (SS). The solubility of SC<sub>18</sub>P<sub><i>p</i></sub>C in cold water was enhanced. Kraft temperature (T<sub><i>k</i></sub>) of SC<sub>18</sub>P<sub>3</sub>C is 40°C which is significantly lower than SS, and T<sub><i>k</i></sub> of SC<sub>18</sub>P<sub><i>p</i></sub>C (<i>p</i> = 6, 9) are even less than 0°C. SC<sub>18</sub>P<sub><i>p</i></sub>C exhibits overall greater hard water resistance compared to SD and SS with the hardness of 0 to 450 mg/L. The hard water resistance of SC<sub>18</sub>P<sub><i>p</i></sub>C escalates proportionally with the length of the spacer, and the aqueous solution of SC<sub>18</sub>P<sub>9</sub>C retains its clarity even when exposed to the hard water of 450 mg/L, the maximum hardness level of Chinese tap water. SC<sub>18</sub>P<sub><i>p</i></sub>C demonstrates efficiency and effectiveness in reducing surface tension, as well as better foaming, emulsification and wetting power compared to SD and SS. These improved properties make SC<sub>18</sub>P<sub><i>p</i></sub>C (<i>p</i> = 3, 6) more effective in detergency on three typical soiled fabrics compared to that of sodium soap. Specifically, the detergency to sebum-stained fabric of SC<sub>18</sub>P<sub>3</sub>C exhibits 1.5 times and 1.3 times improvement compared to SD and SS, respectively. Therefore, it is recommended to incorporate SC<sub>18</sub>P<sub><i>p</i></sub>C (<i>p</i> = 3, 6) in the detergent formulations for washing intimate apparel in tap water.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"251-262"},"PeriodicalIF":1.6,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219648","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
Study on the Pickering emulsions stabilized by SiO2 nanoparticles for enhanced oil recovery 利用二氧化硅纳米颗粒稳定的皮克林乳液提高石油采收率的研究
IF 1.6 4区 工程技术
Journal of Surfactants and Detergents Pub Date : 2024-08-13 DOI: 10.1002/jsde.12794
Liu Yang, Jijiang Ge, Hao Wu, Hongbin Guo, Jingling Shan, Guicai Zhang
{"title":"Study on the Pickering emulsions stabilized by SiO2 nanoparticles for enhanced oil recovery","authors":"Liu Yang,&nbsp;Jijiang Ge,&nbsp;Hao Wu,&nbsp;Hongbin Guo,&nbsp;Jingling Shan,&nbsp;Guicai Zhang","doi":"10.1002/jsde.12794","DOIUrl":"10.1002/jsde.12794","url":null,"abstract":"<p>In high-temperature and high-salt environments, emulsions stabilized by surfactants are susceptible to instability phenomena, such as droplet coalescence, thereby limiting their utility in tertiary oil recovery. The Pickering emulsions, which are stabilized by solid particles, have been proved to exhibit good stability. This study demonstrated that the nonionic surfactant C16E20 can adsorb onto SiO<sub>2</sub> nanoparticles with an efficiency exceeding 99%, rendering C16E20 suitable for modulating the wettability of SiO<sub>2</sub> nanoparticles. By adjusting the proper surfactant-to-nanoparticle ratio, such as 0.1%:1.0%, a hydrophilic–lipophilic equilibrium is obtained, which is beneficial for the preparation of Pickering emulsions. Laser confocal and cryo-scanning electron microscopy results indicated that SiO<sub>2</sub> nanoparticles in Pickering emulsions were dispersed at the oil–water interface, forming a network structure between the emulsion droplets. Further experiments illustrated that the Pickering emulsions showed excellent stability for at least 180 days at 80°C. Conventional emulsions behave as Newtonian fluids at lower oil-phase ratios, while Pickering emulsions exhibit non-Newtonian fluid properties, with their viscosity capable of increasing by over 100 times. Additionally, Pickering emulsions were found to exhibit thixotropy, attributed to the reversible formation and destruction of droplet bridging structures. Overall, Pickering emulsions are regarded as potential agents for Enhanced Oil Recovery in oilfield development.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 2","pages":"225-238"},"PeriodicalIF":1.6,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219651","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
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