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Determination of critical micelar concentration of anionic surfactants using surfactants - sensible electrodes [articol]

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dc.contributor.author Mihali, C.
dc.contributor.author Oprea, G.
dc.contributor.author Cical, Elena-Gabriela
dc.date.accessioned 2020-04-28T11:03:23Z
dc.date.accessioned 2021-03-01T08:38:04Z
dc.date.available 2020-04-28T11:03:23Z
dc.date.available 2021-03-01T08:38:04Z
dc.date.issued 2008
dc.identifier.citation Mihali, C.. Determination of critical micelar concentration of anionic surfactants using surfactants - sensible electrodes. Timişoara: Editura Politehnica, 2008 en_US
dc.identifier.uri http://primo.upt.ro:1701/primo-explore/search?query=any,contains,Determination%20of%20critical%20micelar%20concentration%20of%20anionic%20surfactants%20using%20surfactants%20-%20sensible%20electrodes&tab=default_tab&search_scope=40TUT&vid=40TUT_V1&lang=ro_RO&offset=0 Link Primo
dc.description.abstract A series of all-solid-state electrodes sensible to the ionic (anionic and cationic) surfactants were developed using silver pills coated with PVC membranes. We used cetyltrimethylammonium laurylsulfate and tricaprylmethylammonium laurylsulfate as sensing materials (active substance). The electrochemical properties of the electrodes were studied and the functions of the electrodes were tested. We selected the best membrane composition considering the best slope and the largest linear response domain. The membrane composition with the best electrochemical characteristics was that based on tricaprylmethylammonium laurylsulfate plasticized with dioctylsebaccate (nearnerstinan slope: 58,56 mV/pC and concentration range of linear response 5x10-3-2x10-6 M of laurylsulfate). The electrode function of these electrodes presents an abrupt change at critical micellar point. This property makes possible their utilization to critical micellar concentration, an important property of surfactants solution. We compared the obtained values of critical micellear concentration for sodium laurylsulfate and dodecylbezensulphonate with those obtained from conductivity measurements and we obtained good concordance. We studied also the influence of inorganic electrolytes to critical micellar concentration (CMC) values. en_US
dc.language.iso en en_US
dc.publisher Timişoara: Editura Politehnica en_US
dc.relation.ispartofseries Buletinul ştiinţific al Universităţii „Politehnica” din Timişoara, România. Seria chimie şi ingineria mediului, Tom 53(67), fasc. 1-2 (2008), p. 159-162
dc.subject Chimie anorganică en_US
dc.subject Articol en_US
dc.subject Ion-selective electrode en_US
dc.subject Anionic surfactant en_US
dc.subject Critical micellar concentration en_US
dc.subject PVC membrane en_US
dc.title Determination of critical micelar concentration of anionic surfactants using surfactants - sensible electrodes [articol] en_US
dc.type Article en_US


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