Interaction of Phenol Red with cetyltrimethylammonium bromide in aqueous solution

Abstract

This paper studies the interaction of anionic dye Phenol Red with cationic surfactant cetyltrimethylammonium bromide in aqueous solution and its influence on the formation of cetyltrimethylammonium bromide micelles for the first time. We obtain a series of thermodynamic parameters of the interaction by establishing a reasonable physical model of the association. Moreover, an in‐depth study on the variation in the absorption spectrum finds that the value of absorbance at the maximum absorption peak changes regularly with increase in the cetyltrimethylammonium bromide concentration. By establishing the micellisation models and measuring the changes in electrical conductivity with different cetyltrimethylammonium bromide concentrations, the critical micelle concentration values are obtained, which are essentially the same as the range of concentrations of regular change in absorbance, which shows that the formation of the cetyltrimethylammonium bromide micelles have an impact on the association interaction between Phenol Red and cetyltrimethylammonium bromide. All these data and phenomena illustrate a strong interaction between Phenol Red and cetyltrimethylammonium bromide.

Extraction of reactive dyes from aqueous solutions by halogen‐free ionic liquids

“…In their research, Wang et al used the analogue of IL CTAB to extract the dye Phenol Red. 42 CTAB has a lineal chain with 16 carbon atoms that is responsible for the hydrophobic properties. 42 In the current study, the cationic part of each synthesised IL has three lineal chains with six or eight carbon atoms (ie, 18 or 24 carbon atoms) and the anionic part has different types of carbon chains.…”

“…42 CTAB has a lineal chain with 16 carbon atoms that is responsible for the hydrophobic properties. 42 In the current study, the cationic part of each synthesised IL has three lineal chains with six or eight carbon atoms (ie, 18 or 24 carbon atoms) and the anionic part has different types of carbon chains. The selection of long-chained carbonic compounds was used to obtain hydrophobic ILs and proceed with the extraction process.…”

Study on preparation and structure of chrysanthemum‐shaped micron calcium carbonate based on inverse microemulsion

“…The inverse microemulsion is a water-in-oil dispersion system mainly composed of oil, aqueous, co-surfactants, and surfactants. Due to the special properties of surfactants [20][21][22][23][24][25][26], they can help to form nano-scale microreactors in microemulsion [27]. As an emerging preparation method, it has many advantages, such as the equipment and preparation process are simple, the size of the nanoparticles can be controlled by adjusting the size of the reactor.…”

Spectroscopic and conductometric studies on the interactions of thionine with anionic and nonionic surfactants

“…Although many papers have been dedicated to dye-surfactant interactions over recent years [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], studies in this area are still of interest from the theoretical viewpoint and are of great importance in dyeing technology, as surfactants can be used as solubilisers for waterinsoluble dyes to break down dye aggregates in order to facilitate adsorption processes on fibres. Interactions between dyes and surfactants have been studied by various techniques, such as spectrophotometry [7][8][9][10][11][12][13][14][15][16], conductometry [17][18][19], and potentiometry [20][21][22]. Among these experimental methods, the most widely used has been spectrophotometry, as surfactants influence the chemical equilibria as well as the spectral and electrochemical responses of substrates as a result of dye-surfactant interactions.…”

“…Interactions between surfactant and dye are important in the dyeing process as well as in chemical research in fields such as biochemistry, analytical chemistry, and photosensitisation . Although many papers have been dedicated to dye–surfactant interactions over recent years , studies in this area are still of interest from the theoretical viewpoint and are of great importance in dyeing technology, as surfactants can be used as solubilisers for water‐insoluble dyes to break down dye aggregates in order to facilitate adsorption processes on fibres. Interactions between dyes and surfactants have been studied by various techniques, such as spectrophotometry , conductometry , and potentiometry .…”