https://scholars.lib.ntu.edu.tw/handle/123456789/409915
DC 欄位 | 值 | 語言 |
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dc.contributor.author | Šarac, Bojan | en_US |
dc.contributor.author | Medoš, Žiga | en_US |
dc.contributor.author | Cognigni, Alice | en_US |
dc.contributor.author | Bica, Katharina | en_US |
dc.contributor.author | LI-JEN CHEN | en_US |
dc.contributor.author | Bešter-Rogač, Marija | en_US |
dc.creator | Bešter-Rogač, Marija;Bica, Katharina;Cognigni, Alice;Medoš, Žiga;Šarac, Bojan;LI-JEN CHEN | - |
dc.date.accessioned | 2019-05-22T05:30:53Z | - |
dc.date.available | 2019-05-22T05:30:53Z | - |
dc.date.issued | 2017-11-05 | - |
dc.identifier.issn | 09277757 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/409915 | - |
dc.description.abstract | © 2017 Elsevier B.V. A systematic investigation of influence of the length of the side alkyl chain and the counter-ions on the thermodynamics of the micellization process at imidazolium based surface active ionic liquids (SAILs) in aqueous solutions was carried out by isothermal titration calorimetry (ITC) in a broad temperature range. The effect of alkyl chain length on the micellization process in water has been investigated on 1-decyl-3-methylimidazolium ([C10mim]Cl), 1-dodecyl-3-methylimidazolium ([C12mim]Cl), 1- tetradecyl-3-methylimidazolium ([C14mim]Cl) and 1-hexadecyl-3- methylimidazolium ([C16mim]Cl) chlorides, whereas the influence of counter-ion was studied at the micellization of 1-dodecyl-3-methylimidazolium chloride ([C12mim]Cl), bromide ([C12mim]Br), iodide ([C12mim]I), acetate ([C12mim]OAc), methanesulfonate ([C12mim]OMs), toluen sulfonate ([C12mim]OTs), trifluromethane sulfonate ([C12mim]OTf), trifluoro acetate ([C12mim]TFA) and salicylate ([C12mim]Sal) in water. From ITC experimental data, the corresponding standard thermodynamic parameters of micellization (enthalpy, ΔMH0; Gibbs free energy, ΔMG0; entropy, ΔMS0; heat capacity change, ΔMcp0) were estimated by help of the mass-action model. It was found that SAILs behave mainly like common cationic surfactants, where cmc values are decreasing with the length of the side alkyl chain and exhibit U-shape dependence on temperature. Remarkable influence of counter-ions on cmc and all thermodynamic functions was observed, however the entropy-enthalpy compensation turned out as a matter of fact, arising from the relationship ΔG = ΔH − TΔS. ΔMcp0 values were further discussed in terms of the removal of solvent accessible surface areas of SAILs and counter-ion from the contact with water after micellization. | en_US |
dc.language.iso | en | en_US |
dc.relation.ispartof | Colloids and Surfaces A: Physicochemical and Engineering Aspects | en_US |
dc.subject | Isothermal titration calorimetry | Micellization | Solvent accessible surface area | Surface active imidazolium based ionic liquids | Thermodynamic study | en_US |
dc.title | Thermodynamic study for micellization of imidazolium based surface active ionic liquids in water: Effect of alkyl chain length and anions | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1016/j.colsurfa.2017.01.062 | - |
dc.identifier.doi | https://api.elsevier.com/content/abstract/scopus_id/85014028797 | - |
dc.identifier.scopus | 2-s2.0-85014028797 | - |
dc.identifier.url | https://api.elsevier.com/content/abstract/scopus_id/85014028797 | - |
dc.relation.journalvolume | 532 | en_US |
dc.relation.pageend | 617 | en_US |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.languageiso639-1 | en | - |
item.grantfulltext | none | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0003-3565-551X | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系 |
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