Pregled bibliografske jedinice broj: 521485
Thermodynamic study of interactions between N-dodecyl-B-D-malthoside and dodecyltrimethylammonium bromide
Thermodynamic study of interactions between N-dodecyl-B-D-malthoside and dodecyltrimethylammonium bromide // Zbornik radova 4. međunarodno znanstveno-stručno savjetovanje Tekstilna znanost i gospodarstvo / Penava, Željko ; Ujević, Darko (ur.).
Zagreb, 2011. str. 131-134 (poster, međunarodna recenzija, cjeloviti rad (in extenso), znanstveni)
CROSBI ID: 521485 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Thermodynamic study of interactions between N-dodecyl-B-D-malthoside and dodecyltrimethylammonium bromide
Autori
Kert, Mateja ; Simončić, Barbara ; Soljačić, Ivo ; Pušić, Tanja
Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni
Izvornik
Zbornik radova 4. međunarodno znanstveno-stručno savjetovanje Tekstilna znanost i gospodarstvo
/ Penava, Željko ; Ujević, Darko - Zagreb, 2011, 131-134
ISBN
978-953-7105-39-6
Skup
4. međunarodno znanstveno-stručno savjetovanje Tekstilna znanost i gospodarstvo
Mjesto i datum
Zagreb, Hrvatska, 16.01.2011
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
cationic-nonionic surfactant mixture; interactions; thermodynamics; potentiometry
Sažetak
The strength of interactions between nonionic surfactant n-dodecyl-β-D-maltoside (DM) and cationic surfactant dodecyltrimethylammonium bromide (DTAB) was investigated. The potentiometric method based on the use of DTAB ion-selective membrane electrode, and an appropriate theoretical model was chosen to quantify the strength of interactions between DM and DTAB. The equilibrium constant of DTAB-DM complex formation, K1, was determined and the thermodynamic functions standard free energy change, ΔG1°, standard enthalpy change, ΔH1°, and standard entropy change, ΔS1°, are calculated for the first association step of DTAB-DM complex formation. The results show that the values of ΔG1° decreases with increasing temperature, meaning that the tendency of DTAB-DM complex formation increases with increasing temperature. The value of ΔH1° is positive therefore the process of DTAB-DM complex formation is endothermic. The positive values of ΔS1° for DTAB-DM complex formation show that the system becomes more random after the transfer of DTAB cation from the aqueous bulk phase into the DM micelle. According to the obtained results of thermodynamic functions it can be concluded that DTAB-DM complex formation is entropy-driven process.
Izvorni jezik
Engleski
Znanstvena područja
Tekstilna tehnologija
POVEZANOST RADA
Projekti:
117-1171419-1382 - Etika i ekologija u oplemenjivanju i njezi tekstila (Soljačić, Ivo, MZOS ) ( CroRIS)
Ustanove:
Tekstilno-tehnološki fakultet, Zagreb
