Md. Mahade Hasan , Malik Abdul Rub , K.M. Anis-Ul-Haque , Md. Jonayed , Naved Azum , Khalid A. Alzahrani , Shahed Rana , Md. Anamul Hoque
{"title":"研究阳离子十四烷基三甲基溴化铵在水晶紫染料水溶液中的胶束化:了解醇类和温度的影响","authors":"Md. Mahade Hasan , Malik Abdul Rub , K.M. Anis-Ul-Haque , Md. Jonayed , Naved Azum , Khalid A. Alzahrani , Shahed Rana , Md. Anamul Hoque","doi":"10.1016/j.colsurfa.2024.135804","DOIUrl":null,"url":null,"abstract":"<div><div>Exploring dye-surfactant interactions is crucial for understanding the properties of their mixtures in various applications. It is of utmost importance to explore the effects of experimental factors on the dye-surfactant interactions. This study examines the micellization of the cationic surfactant tetradecyltrimethylammonium bromide (TTAB) in the presence of crystal violet (CV) dye in different alcohol solutions including methanol (MeOH), ethanol (EtOH), 1-propanol (1-PrOH), and 1-butanol (1-BuOH). Through conductometric analysis, the effects of varying alcohol compositions and temperature on the critical micelle concentration (CMC), degree of ionization (<span><math><mi>α</mi></math></span>), counterion binding (<span><math><mi>β</mi></math></span>), and thermodynamic parameters (<span><math><mrow><mo>∆</mo><msubsup><mrow><mi>G</mi></mrow><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msubsup></mrow></math></span>, <span><math><mrow><mo>∆</mo><msubsup><mrow><mi>H</mi></mrow><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msubsup></mrow></math></span>, and <span><math><mrow><mo>∆</mo><msubsup><mrow><mi>S</mi></mrow><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msubsup></mrow></math></span>) were investigated. The findings show that alcohol causes an increase in CMC, with longer-chain alcohols (1-PrOH and 1-BuOH) having a stronger effect on TTAB + CV aggregation. The CMC values of the investigated system in 5 % alcohol solutions were found to follow this order: CMC (aq. 1-BuOH) > CMC (aq. MeOH) > CMC (aq. EtOH) > CMC (aq. 1-PrOH). As temperature rises at a constant alcohol concentration, CMC initially decreases but then increases due to dehydration of the surfactant’s hydrophilic and hydrophobic regions. Thermodynamic analysis reveals that micellization is mainly entropy-driven at lower temperatures, with dominant hydrophobic interactions. As temperature increases, both enthalpy and entropy play significant roles, on the micellization to be occurred through hydrophobic and ion-induced dipole interactions. The molar heat capacity (<span><math><msubsup><mrow><mo>∆</mo><mi>C</mi></mrow><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msubsup></math></span>) assessment indicates the identical orientation of the alcohol chain within the TTAB micellar core. The study also highlights the enthalpy-entropy compensation effect, revealing a strong correlation. By exploring these relationships between alcohol chain length and temperature with thermodynamic and physicochemical properties of surfactant systems, this research offers valuable insights for developing surfactant-based applications in academic and industrial fields.</div></div>","PeriodicalId":278,"journal":{"name":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","volume":"707 ","pages":"Article 135804"},"PeriodicalIF":4.9000,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Investigation of the micellization of cationic tetradecyltrimethylammonium bromide in aqueous solution of crystal violet dye: Understanding of the impacts of alcohols and temperature\",\"authors\":\"Md. Mahade Hasan , Malik Abdul Rub , K.M. Anis-Ul-Haque , Md. Jonayed , Naved Azum , Khalid A. Alzahrani , Shahed Rana , Md. Anamul Hoque\",\"doi\":\"10.1016/j.colsurfa.2024.135804\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Exploring dye-surfactant interactions is crucial for understanding the properties of their mixtures in various applications. It is of utmost importance to explore the effects of experimental factors on the dye-surfactant interactions. This study examines the micellization of the cationic surfactant tetradecyltrimethylammonium bromide (TTAB) in the presence of crystal violet (CV) dye in different alcohol solutions including methanol (MeOH), ethanol (EtOH), 1-propanol (1-PrOH), and 1-butanol (1-BuOH). Through conductometric analysis, the effects of varying alcohol compositions and temperature on the critical micelle concentration (CMC), degree of ionization (<span><math><mi>α</mi></math></span>), counterion binding (<span><math><mi>β</mi></math></span>), and thermodynamic parameters (<span><math><mrow><mo>∆</mo><msubsup><mrow><mi>G</mi></mrow><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msubsup></mrow></math></span>, <span><math><mrow><mo>∆</mo><msubsup><mrow><mi>H</mi></mrow><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msubsup></mrow></math></span>, and <span><math><mrow><mo>∆</mo><msubsup><mrow><mi>S</mi></mrow><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msubsup></mrow></math></span>) were investigated. The findings show that alcohol causes an increase in CMC, with longer-chain alcohols (1-PrOH and 1-BuOH) having a stronger effect on TTAB + CV aggregation. The CMC values of the investigated system in 5 % alcohol solutions were found to follow this order: CMC (aq. 1-BuOH) > CMC (aq. MeOH) > CMC (aq. EtOH) > CMC (aq. 1-PrOH). As temperature rises at a constant alcohol concentration, CMC initially decreases but then increases due to dehydration of the surfactant’s hydrophilic and hydrophobic regions. Thermodynamic analysis reveals that micellization is mainly entropy-driven at lower temperatures, with dominant hydrophobic interactions. As temperature increases, both enthalpy and entropy play significant roles, on the micellization to be occurred through hydrophobic and ion-induced dipole interactions. The molar heat capacity (<span><math><msubsup><mrow><mo>∆</mo><mi>C</mi></mrow><mrow><mi>m</mi></mrow><mrow><mn>0</mn></mrow></msubsup></math></span>) assessment indicates the identical orientation of the alcohol chain within the TTAB micellar core. The study also highlights the enthalpy-entropy compensation effect, revealing a strong correlation. By exploring these relationships between alcohol chain length and temperature with thermodynamic and physicochemical properties of surfactant systems, this research offers valuable insights for developing surfactant-based applications in academic and industrial fields.</div></div>\",\"PeriodicalId\":278,\"journal\":{\"name\":\"Colloids and Surfaces A: Physicochemical and Engineering Aspects\",\"volume\":\"707 \",\"pages\":\"Article 135804\"},\"PeriodicalIF\":4.9000,\"publicationDate\":\"2024-11-19\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Colloids and Surfaces A: Physicochemical and Engineering Aspects\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0927775724026682\",\"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":"Colloids and Surfaces A: Physicochemical and Engineering Aspects","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0927775724026682","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Investigation of the micellization of cationic tetradecyltrimethylammonium bromide in aqueous solution of crystal violet dye: Understanding of the impacts of alcohols and temperature
Exploring dye-surfactant interactions is crucial for understanding the properties of their mixtures in various applications. It is of utmost importance to explore the effects of experimental factors on the dye-surfactant interactions. This study examines the micellization of the cationic surfactant tetradecyltrimethylammonium bromide (TTAB) in the presence of crystal violet (CV) dye in different alcohol solutions including methanol (MeOH), ethanol (EtOH), 1-propanol (1-PrOH), and 1-butanol (1-BuOH). Through conductometric analysis, the effects of varying alcohol compositions and temperature on the critical micelle concentration (CMC), degree of ionization (), counterion binding (), and thermodynamic parameters (, , and ) were investigated. The findings show that alcohol causes an increase in CMC, with longer-chain alcohols (1-PrOH and 1-BuOH) having a stronger effect on TTAB + CV aggregation. The CMC values of the investigated system in 5 % alcohol solutions were found to follow this order: CMC (aq. 1-BuOH) > CMC (aq. MeOH) > CMC (aq. EtOH) > CMC (aq. 1-PrOH). As temperature rises at a constant alcohol concentration, CMC initially decreases but then increases due to dehydration of the surfactant’s hydrophilic and hydrophobic regions. Thermodynamic analysis reveals that micellization is mainly entropy-driven at lower temperatures, with dominant hydrophobic interactions. As temperature increases, both enthalpy and entropy play significant roles, on the micellization to be occurred through hydrophobic and ion-induced dipole interactions. The molar heat capacity () assessment indicates the identical orientation of the alcohol chain within the TTAB micellar core. The study also highlights the enthalpy-entropy compensation effect, revealing a strong correlation. By exploring these relationships between alcohol chain length and temperature with thermodynamic and physicochemical properties of surfactant systems, this research offers valuable insights for developing surfactant-based applications in academic and industrial fields.
期刊介绍:
Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena.
The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.