Journal of Surfactants and Detergents最新文献

{"title":"The study of micellar transitions in mixed systems of dibranched cationic/nonionic fluorinated surfactants using various physicochemical methods","authors":"Amina Sardi,&nbsp;Khadidja Kradra Brahma,&nbsp;Souad Bennabi,&nbsp;Soumia Abdelkrim","doi":"10.1002/jsde.12813","DOIUrl":"https://doi.org/10.1002/jsde.12813","url":null,"abstract":"<p>In this study, a new method was introduced to induce micellar transitions by using vesicles formed from mixed surfactants, which offer enhanced stability. Different physicochemical analysis methods were used to study the transition mechanism and the aggregation behavior of the mixed aqueous system composed of the double-chain cationic didodecyldimethylammonium bromide (DDAB) and a single-chain nonionic fluorinated surfactant undecafluoro n-pentyl decaoxyethylene ether (C₅F₁₁(EO)₁₀), by varying the fraction of DDAB, then the total surfactant concentration of DDAB/C₅F₁₁(EO)₁₀ mixed system at X_DDAB = 0.9. The obtained results indicated that the addition of the fluorinated surfactant C₅F₁₁(EO)₁₀ to the mixed system resulted in a reduction of the surface tension (<i>γ</i>) and a decrease in the Electrical conductivity (K). Furthermore, even at high total concentrations of the mixed system, the conductivity and charge density at the surface remained stable. As X_DDAB values increased, a higher degree of dissociation (α) was observed, along with negative values in the thermodynamic parameters of micellization (Δ<span></span><math>\u0000 <mrow>\u0000 <msubsup>\u0000 <mi>G</mi>\u0000 <mi>CMC</mi>\u0000 <mo>°</mo>\u0000 </msubsup>\u0000 </mrow></math>, Δ<span></span><math>\u0000 <mrow>\u0000 <msubsup>\u0000 <mi>G</mi>\u0000 <mi>CVC</mi>\u0000 <mo>°</mo>\u0000 </msubsup>\u0000 </mrow></math>, and Δ<span></span><math>\u0000 <mrow>\u0000 <msubsup>\u0000 <mi>G</mi>\u0000 <mi>ads</mi>\u0000 <mo>°</mo>\u0000 </msubsup>\u0000 </mrow></math>), confirming the transition from micelles to vesicles. The dynamic light scattering (DLS) analysis revealed the formation of two stable types of aggregates at both low and high concentrations, as supported by the zeta potential (ζ). Upon increasing the concentration of surfactants, UV–Vis absorption measurements indicated that small spherical micelles grow into large multilamellar vesicles, as evidenced by an increase in turbidity and confirmed transmission electron microscopy images.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 1","pages":"201-212"},"PeriodicalIF":1.6,"publicationDate":"2024-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143121176","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}

{"title":"Special issue: Industrial surfactants R&D—A tribute to George A. Smith","authors":"Gregory P. Dado PhD,&nbsp;Nancy A. Falk PhD,&nbsp;Aslin Izmitli PhD,&nbsp;Thu Landry PhD,&nbsp;Philip K. Vinson PhD","doi":"10.1002/jsde.12812","DOIUrl":"https://doi.org/10.1002/jsde.12812","url":null,"abstract":"","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"27 6","pages":"835-836"},"PeriodicalIF":1.6,"publicationDate":"2024-10-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642048","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}

{"title":"Cloning, purification, and functional characterization of recombinant pullulanase from Bacillus cereusATCC 14579 for improved detergent performance","authors":"Asma Zafar, Ammara Masood, Ziaur Rahman, Attia Hamid, Mah Hoor Javed, Amna Zulfiqar, Samreen Fatima, Madood Makhdoom, Muhammad Nauman Aftab","doi":"10.1002/jsde.12796","DOIUrl":"https://doi.org/10.1002/jsde.12796","url":null,"abstract":"The present study outlines the approach that was employed for cloning, expression, and characterization of the recombinant pullulanase enzyme from <jats:italic>Bacillus cereus</jats:italic> ATCC 14579 into <jats:italic>Escherichia coli</jats:italic> 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<jats:sup>2+</jats:sup> and Mg<jats:sup>2+</jats:sup>, had a positive effect on the activity of the pullulanase enzyme. Conversely, the presence of Co<jats:sup>2+</jats: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.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"60 1","pages":""},"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}

{"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}

{"title":"Synthesis and properties of sodium stearyl polyoxypropylene acetates","authors":"Xueyi Hu, Ying Zhu, Liwen Shi, Kaiqiang Zhou, Yun Fang, Fuyi Li","doi":"10.1002/jsde.12791","DOIUrl":"https://doi.org/10.1002/jsde.12791","url":null,"abstract":"Sodium stearyl polyoxypropylene acetates (SC<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C, <jats:italic>p</jats:italic> = 3, 6, 9) were synthesized through a two‐step process involving propoxylation of stearyl alcohol and subsequent carboxymethylation. Stearyl polyoxypropylene acetic acids (C<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C, <jats:italic>p</jats:italic> = 3, 6, 9), the acidified products of SC<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C, were characterized by FT‐IR, <jats:sup>1</jats:sup>H‐NMR, and ESI‐MS. The properties of SC<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C were extensively investigated and compared with sodium dodecanoate (SD) and sodium stearate (SS). The solubility of SC<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C in cold water was enhanced. Kraft temperature (T<jats:sub><jats:italic>k</jats:italic></jats:sub>) of SC<jats:sub>18</jats:sub>P<jats:sub>3</jats:sub>C is 40°C which is significantly lower than SS, and T<jats:sub><jats:italic>k</jats:italic></jats:sub> of SC<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C (<jats:italic>p</jats:italic> = 6, 9) are even less than 0°C. SC<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats: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<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C escalates proportionally with the length of the spacer, and the aqueous solution of SC<jats:sub>18</jats:sub>P<jats:sub>9</jats: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<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats: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<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C (<jats:italic>p</jats:italic> = 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<jats:sub>18</jats:sub>P<jats:sub>3</jats:sub>C exhibits 1.5 times and 1.3 times improvement compared to SD and SS, respectively. Therefore, it is recommended to incorporate SC<jats:sub>18</jats:sub>P<jats:sub><jats:italic>p</jats:italic></jats:sub>C (<jats:italic>p</jats:italic> = 3, 6) in the detergent formulations for washing intimate apparel in tap water.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"182 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-08-22","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}

{"title":"Study on the Pickering emulsions stabilized by SiO2 nanoparticles for enhanced oil recovery","authors":"Liu Yang, Jijiang Ge, Hao Wu, Hongbin Guo, Jingling Shan, Guicai Zhang","doi":"10.1002/jsde.12794","DOIUrl":"https://doi.org/10.1002/jsde.12794","url":null,"abstract":"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<jats:sub>2</jats:sub> nanoparticles with an efficiency exceeding 99%, rendering C16E20 suitable for modulating the wettability of SiO<jats:sub>2</jats: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<jats:sub>2</jats: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.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"8 1","pages":""},"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}

{"title":"A cold‐adapted and robust alkaline lipase from Marinobacter nanhaiticus boosts laundry detergent performance","authors":"Qinzhou Cai, Huifang Zhang, Bingshan Zhao, Lei Ren, Yonghua Wang, Fanghua Wang","doi":"10.1002/jsde.12793","DOIUrl":"https://doi.org/10.1002/jsde.12793","url":null,"abstract":"Cold‐adapted, alkali‐stable lipases with surfactant tolerance are highly sought after in the detergent industry. In this study, we recombinantly expressed and characterized a novel lipase from <jats:italic>Marinobacter nanhaiticus</jats:italic> (MNL). The purified MNL exhibited high stability within a temperature range of 10–30°C and pH values of 8–10, demonstrating optimal activity at 20°C and pH 8. MNL has a preference for substrates with medium chains with the best activity being 3768.6 U/mg using <jats:italic>p</jats:italic>‐nitrophenyl decanoate as a substrate. Remarkably, MNL showed enhanced enzymatic activity in the presence of ionic surfactants and displayed notable resilience when exposed to proteases. Washing performance analysis further revealed MNL's high proficiency in removing oil‐based stains from fabrics. Collectively, these results suggest that MNL holds significant promise as a valuable component in laundry detergent formulations.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"60 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142219652","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}

{"title":"Surface activity and wetting behavior of branched short‐chain anionic perfluorinated/cationic hydrocarbon surfactant blends in dilute solutions","authors":"Mengyuan Peng, Min Sha, Ding Zhang, Biao Jiang","doi":"10.1002/jsde.12792","DOIUrl":"https://doi.org/10.1002/jsde.12792","url":null,"abstract":"Conventional perfluorooctane sulfonyl fluorosurfactants (PFOS) have caused great harm to human health and the environment, but the irreplaceable properties of fluorosurfactants offer great values. To this end, we have synthesized a highly surface active, environmentally friendly sulfonate surfactant (PBSA) with a perfluorinated branched short chain and systematically investigated its thermal stability, surface properties, wetting performance, and so forth. The minimal surface tension (γCMC) and critical micelle concentration (CMC) of the aqueous solution of PBSA were 22.70 mN/m and 0.067 mmol/L, respectively. In addition, the binary system of PBSA and cetyltrimethylammonium bromide (CTAB) exhibited excellent synergistic effects: γCMC and CMC values were reduced to 18.94 mN/m and 0.008 mmol/L. Moreover, the PBSA/CTAB mixed solution exhibited superb wetting ability: it could achieve complete wetting of PTFE plates at low concentrations (1.82 × 10−3 mol/L), with a minimum wetting concentration of only 2.84 × 10−5 mol/L.","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"2 7","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141920690","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}

{"title":"Synthesis and properties of pH-dependent Gemini surfactant containing tripeptide structure","authors":"Fu Han,&nbsp;Ziyu Song,&nbsp;Tianyu Cao,&nbsp;Mingmin Guo","doi":"10.1002/jsde.12790","DOIUrl":"10.1002/jsde.12790","url":null,"abstract":"<p>Amino acid surfactants have mild performance and are sourced from renewable biomass. Compared to classical surfactants, Gemini surfactants have superior properties. The amino acid Gemini surfactants are believed to be adopted more widely. The Gemini surfactant with tripeptide structure, sodium di(lauroyl glutamyl) lysine (DLGL), was prepared by amidation utilizing methyl laurate, glutamate and lysine and characterized by ¹H NMR, ¹³C NMR and MS. Additionally, the pKa value, surface activities, aggregation, foaming properties and emulsifying attributes of the DLGL surfactant in aqueous solution with varied pH values were examined. The results indicate that the protonation-deprotonation behavior of the DLGL surfactant is highly dependent on pH values. The surface tension, critical micelle concentration (<i>cmc</i>), foamability and foam stability exhibited superior performance at pH 6 and 7. Conversely, superior emulsifying ability was observed at pH 9 and 10. Moreover, the spherical vesicles were formed by the DLGL surfactant at pH 6, 7 or 8 while the micelles were generated at pH 9 or 10.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"28 1","pages":"189-199"},"PeriodicalIF":1.6,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141932732","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}

{"title":"Insect oils as sustainable feedstock for natural alcohols","authors":"Renke Rommerskirchen","doi":"10.1002/jsde.12789","DOIUrl":"10.1002/jsde.12789","url":null,"abstract":"<p>Current natural sources of mid-cut alcohol (MCA), a key ingredient in cleaning formulations, present several challenges. One solution is to use insect oils instead of palm kernel oil (PKO) or coconut oil (CNO). In particular, black soldier fly (BSF) larvae oil is a promising raw material that provides a sustainable, natural feedstock for MCA. The estimation of its PCF leads to strongly negative values, driven by a very low land use change. The fact that low-value by-products are upgraded by BSF larvae is an additional advantage and avoids any competition with food crops. This study shows that BSF larvae oil can be a drop-in replacement for PKO and CNO, leading to more sustainable ingredients for cleaning formulations. The technical proof of principle for the production of fatty alcohols has been demonstrated and up-scaling to large commercial volumes should be straightforward. A potential barrier to consumer acceptance is expected to be lowered in the future. In certain regions or applications, successful market entry may already be possible today.</p>","PeriodicalId":17083,"journal":{"name":"Journal of Surfactants and Detergents","volume":"27 6","pages":"847-856"},"PeriodicalIF":1.6,"publicationDate":"2024-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141880632","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}