Hysteresis of conductivity in a micellar surfactant solution near the Krafft point
The specific conductivity of aqueous cetyltrimethylammonium bromide solutions has been investigated below and above the critical micelle concentration, in order to elucidate slow structural changes. Around the Krafft temperature (≈25°C) the monomer solubility reaches the critical micelle concentrati...
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| Format: | Article |
| Language: | English |
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Serbian Chemical Society
2020-01-01
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| Series: | Journal of the Serbian Chemical Society |
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| Online Access: | http://www.doiserbia.nb.rs/img/doi/0352-5139/2020/0352-51391900068M.pdf |
| _version_ | 1818689863876083712 |
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| author | Manojlović Jelena Ž. |
| author_facet | Manojlović Jelena Ž. |
| author_sort | Manojlović Jelena Ž. |
| collection | DOAJ |
| description | The specific conductivity of aqueous cetyltrimethylammonium bromide solutions has been investigated below and above the critical micelle concentration, in order to elucidate slow structural changes. Around the Krafft temperature (≈25°C) the monomer solubility reaches the critical micelle concentration, and a significant increase in charge transport is recorded. When a temperature decreases, the micellar surfactant solution passes through the Krafft temperature, and a hysteresis phenomenon is observed with the appearance of crystals in a solution. We have scrutinized the conditions leading to this hysteresis and quantified some of the relevant parameters. We also outline a simple procedure that allows the “erasure” of such structural memory effects, which are potentially detrimental to the formation of adsorbed self-assembled monolayers from solution. |
| first_indexed | 2024-12-17T12:16:52Z |
| format | Article |
| id | doaj.art-4403506436b74499b86cd0b63d031836 |
| institution | Directory Open Access Journal |
| issn | 0352-5139 1820-7421 |
| language | English |
| last_indexed | 2024-12-17T12:16:52Z |
| publishDate | 2020-01-01 |
| publisher | Serbian Chemical Society |
| record_format | Article |
| series | Journal of the Serbian Chemical Society |
| spelling | doaj.art-4403506436b74499b86cd0b63d0318362022-12-21T21:49:08ZengSerbian Chemical SocietyJournal of the Serbian Chemical Society0352-51391820-74212020-01-01851677810.2298/JSC190206068M0352-51391900068MHysteresis of conductivity in a micellar surfactant solution near the Krafft pointManojlović Jelena Ž.0Faculty of Mechanical Engineering, Niš, SerbiaThe specific conductivity of aqueous cetyltrimethylammonium bromide solutions has been investigated below and above the critical micelle concentration, in order to elucidate slow structural changes. Around the Krafft temperature (≈25°C) the monomer solubility reaches the critical micelle concentration, and a significant increase in charge transport is recorded. When a temperature decreases, the micellar surfactant solution passes through the Krafft temperature, and a hysteresis phenomenon is observed with the appearance of crystals in a solution. We have scrutinized the conditions leading to this hysteresis and quantified some of the relevant parameters. We also outline a simple procedure that allows the “erasure” of such structural memory effects, which are potentially detrimental to the formation of adsorbed self-assembled monolayers from solution.http://www.doiserbia.nb.rs/img/doi/0352-5139/2020/0352-51391900068M.pdfsurfactantsself-assembled monolayersthe krafft temperatureconductivityhysteresis |
| spellingShingle | Manojlović Jelena Ž. Hysteresis of conductivity in a micellar surfactant solution near the Krafft point Journal of the Serbian Chemical Society surfactants self-assembled monolayers the krafft temperature conductivity hysteresis |
| title | Hysteresis of conductivity in a micellar surfactant solution near the Krafft point |
| title_full | Hysteresis of conductivity in a micellar surfactant solution near the Krafft point |
| title_fullStr | Hysteresis of conductivity in a micellar surfactant solution near the Krafft point |
| title_full_unstemmed | Hysteresis of conductivity in a micellar surfactant solution near the Krafft point |
| title_short | Hysteresis of conductivity in a micellar surfactant solution near the Krafft point |
| title_sort | hysteresis of conductivity in a micellar surfactant solution near the krafft point |
| topic | surfactants self-assembled monolayers the krafft temperature conductivity hysteresis |
| url | http://www.doiserbia.nb.rs/img/doi/0352-5139/2020/0352-51391900068M.pdf |
| work_keys_str_mv | AT manojlovicjelenaz hysteresisofconductivityinamicellarsurfactantsolutionnearthekrafftpoint |