Qun Zhang , Lu Han , Huoxin Luan , Jia Ren , Chongjun Xu , Gen Li , Hongyan Xiao , Zhaohui Zhou , Lu Zhang
{"title":"降低甜菜碱和延伸表面活性剂之间的界面张力的协同作用:自我调节分子大小的作用","authors":"Qun Zhang , Lu Han , Huoxin Luan , Jia Ren , Chongjun Xu , Gen Li , Hongyan Xiao , Zhaohui Zhou , Lu Zhang","doi":"10.1016/j.molliq.2023.121605","DOIUrl":null,"url":null,"abstract":"<div><p>The synergism for reducing interfacial tensions (IFTs) between betaines and anionic extended surfactants with self-regulating ability was validated by experiments and molecular dynamics simulation. The IFTs of different betaines and different alkyl polypropylene ether sulfonates (APS) mixed solutions against decane and crude oil were investigated via the spinning drop method. The results demonstrate that the IFTs order of the three betaines is EDAS > ASB > XSB, which is consistent with their interfacial vacancies. Moreover, the interfacial activity of APS surfactants increases significantly and the IFTs decrease notably with the increase of propylene oxide (PO) numbers. For the betaines and APS surfactants mixed systems, the determining factor to reduce IFTs is not hydrophilic-lipophilic balance (HLB) but “size compatibility”. APS molecules can achieve a superior synergistic effect with different betaines by electrostatic attraction and size compatibility. The self-regulating characteristic of the flexible PO group enables the extended surfactants to exhibit certain synergistic effects with different betaines. What’s more, betaines and APS surfactants have a certain synergistic effect to reduce IFT values during a wide concentration ratio against crude oil. The findings of this study can help for better understanding of mixed surfactant solutions in enhanced oil recovery.</p></div>","PeriodicalId":371,"journal":{"name":"Journal of Molecular Liquids","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2023-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":"{\"title\":\"Synergism for lowering interfacial tensions between betaines and extended surfactants: The role of self-regulating molecular size\",\"authors\":\"Qun Zhang , Lu Han , Huoxin Luan , Jia Ren , Chongjun Xu , Gen Li , Hongyan Xiao , Zhaohui Zhou , Lu Zhang\",\"doi\":\"10.1016/j.molliq.2023.121605\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The synergism for reducing interfacial tensions (IFTs) between betaines and anionic extended surfactants with self-regulating ability was validated by experiments and molecular dynamics simulation. The IFTs of different betaines and different alkyl polypropylene ether sulfonates (APS) mixed solutions against decane and crude oil were investigated via the spinning drop method. The results demonstrate that the IFTs order of the three betaines is EDAS > ASB > XSB, which is consistent with their interfacial vacancies. Moreover, the interfacial activity of APS surfactants increases significantly and the IFTs decrease notably with the increase of propylene oxide (PO) numbers. For the betaines and APS surfactants mixed systems, the determining factor to reduce IFTs is not hydrophilic-lipophilic balance (HLB) but “size compatibility”. APS molecules can achieve a superior synergistic effect with different betaines by electrostatic attraction and size compatibility. The self-regulating characteristic of the flexible PO group enables the extended surfactants to exhibit certain synergistic effects with different betaines. What’s more, betaines and APS surfactants have a certain synergistic effect to reduce IFT values during a wide concentration ratio against crude oil. The findings of this study can help for better understanding of mixed surfactant solutions in enhanced oil recovery.</p></div>\",\"PeriodicalId\":371,\"journal\":{\"name\":\"Journal of Molecular Liquids\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2023-05-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Molecular Liquids\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0167732223004087\",\"RegionNum\":2,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Molecular Liquids","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167732223004087","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Synergism for lowering interfacial tensions between betaines and extended surfactants: The role of self-regulating molecular size
The synergism for reducing interfacial tensions (IFTs) between betaines and anionic extended surfactants with self-regulating ability was validated by experiments and molecular dynamics simulation. The IFTs of different betaines and different alkyl polypropylene ether sulfonates (APS) mixed solutions against decane and crude oil were investigated via the spinning drop method. The results demonstrate that the IFTs order of the three betaines is EDAS > ASB > XSB, which is consistent with their interfacial vacancies. Moreover, the interfacial activity of APS surfactants increases significantly and the IFTs decrease notably with the increase of propylene oxide (PO) numbers. For the betaines and APS surfactants mixed systems, the determining factor to reduce IFTs is not hydrophilic-lipophilic balance (HLB) but “size compatibility”. APS molecules can achieve a superior synergistic effect with different betaines by electrostatic attraction and size compatibility. The self-regulating characteristic of the flexible PO group enables the extended surfactants to exhibit certain synergistic effects with different betaines. What’s more, betaines and APS surfactants have a certain synergistic effect to reduce IFT values during a wide concentration ratio against crude oil. The findings of this study can help for better understanding of mixed surfactant solutions in enhanced oil recovery.
期刊介绍:
The journal includes papers in the following areas:
– Simple organic liquids and mixtures
– Ionic liquids
– Surfactant solutions (including micelles and vesicles) and liquid interfaces
– Colloidal solutions and nanoparticles
– Thermotropic and lyotropic liquid crystals
– Ferrofluids
– Water, aqueous solutions and other hydrogen-bonded liquids
– Lubricants, polymer solutions and melts
– Molten metals and salts
– Phase transitions and critical phenomena in liquids and confined fluids
– Self assembly in complex liquids.– Biomolecules in solution
The emphasis is on the molecular (or microscopic) understanding of particular liquids or liquid systems, especially concerning structure, dynamics and intermolecular forces. The experimental techniques used may include:
– Conventional spectroscopy (mid-IR and far-IR, Raman, NMR, etc.)
– Non-linear optics and time resolved spectroscopy (psec, fsec, asec, ISRS, etc.)
– Light scattering (Rayleigh, Brillouin, PCS, etc.)
– Dielectric relaxation
– X-ray and neutron scattering and diffraction.
Experimental studies, computer simulations (MD or MC) and analytical theory will be considered for publication; papers just reporting experimental results that do not contribute to the understanding of the fundamentals of molecular and ionic liquids will not be accepted. Only papers of a non-routine nature and advancing the field will be considered for publication.