Interaction of DL-Valine/DL-Serine with Cationic and Anionic Surfactants in Aqueous Media: Volumetric, UV-visible Spectroscopic, and Conductometric Studies

IF 1.4 4区 化学 Q4 CHEMISTRY, PHYSICAL Colloid Journal Pub Date : 2024-09-05 DOI:10.1134/s1061933x2460009x
Nafseen Ahmed, Nizamul Haque Ansari, Mohd. Sajid Ali, Mohammad Tariq, Abbul Bashar Khan
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Abstract

In the present work, the volumetric and conductometric studies to find the interactions between amino acids DL-Valine and DL-Serine with cationic and anionic surfactants, cetyltrimethylammonium bromide (CTAB) and sodium dodecyl sulphate (SDS) in aqueous solutions at different temperatures and atmospheric pressure were carried out. The effect of pre- and post-micellar concentrations of surfactants on the physicochemical properties was also studied. The densities measured experimentally were used to calculate the thermodynamic parameters such as the apparent molar volumes, ϕv, partial molar volumes, \(\phi _{{\text{v}}}^{{\text{0}}}\), transfer volumes, \(\phi _{{\text{v}}}^{{\text{0}}}\) (tr), and partial molar expansibilities, \(\phi _{{\text{E}}}^{0}\) at temperatures from 288.15 to 303.15 K while the conductivity data obtained at different temperatures from 293.15 to 318.15 K were used to obtain the molar conductivities (\({{{{\Lambda }}}^{0}}\)) as well as limiting molar conductivities (\(\Lambda _{{\text{m}}}^{0}\)) from specific conductivities (κ) which reflect the interaction prevailing within the studied systems. In addition, the UV-visible absorption spectroscopy at 298.15 K has also been performed in the presence of fluorescein to study the interaction within above mentioned systems.

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DL-Valine/DL-Serine 与阳离子和阴离子表面活性剂在水介质中的相互作用:容量、紫外可见光谱和电导率研究
摘要 在本研究中,研究人员进行了容量测定法和电导测定法研究,以发现氨基酸 DL-缬氨酸和 DL-丝氨酸与阳离子和阴离子表面活性剂十六烷基三甲基溴化铵(CTAB)和十二烷基硫酸钠(SDS)在不同温度和大气压力下的水溶液中的相互作用。此外,还研究了表面活性剂前后胶束浓度对理化性质的影响。实验测得的密度被用来计算热力学参数,如表观摩尔体积、ϕv、部分摩尔体积、\(\phi _{{\text{v}}}^{{\text{0}}}\) 、转移体积 \(\phi _{{\text{v}}}^{{\text{0}}} (tr)和部分摩尔膨胀率 \(\phi _{{\text{E}}}^{0}\) 在温度为 288.而在 293.15 至 318.15 K 不同温度下获得的电导率数据被用来从特定电导率 (κ)中获得摩尔电导率 (\({{{{\Lambda }}}^{0}}\) 以及极限摩尔电导率 (\(\Lambda _{\text{m}}}^{0}\)) ,这些数据反映了所研究体系中普遍存在的相互作用。此外,还在荧光素存在的情况下在 298.15 K 进行了紫外-可见吸收光谱分析,以研究上述体系中的相互作用。
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来源期刊
Colloid Journal
Colloid Journal 化学-物理化学
CiteScore
2.20
自引率
18.20%
发文量
36
审稿时长
6-12 weeks
期刊介绍: Colloid Journal (Kolloidnyi Zhurnal) is the only journal in Russia that publishes the results of research in the area of chemical science dealing with the disperse state of matter and surface phenomena in disperse systems. The journal covers experimental and theoretical works on a great variety of colloid and surface phenomena: the structure and properties of interfaces; adsorption phenomena and structure of adsorption layers of surfactants; capillary phenomena; wetting films; wetting and spreading; and detergency. The formation of colloid systems, their molecular-kinetic and optical properties, surface forces, interaction of colloidal particles, stabilization, and criteria of stability loss of different disperse systems (lyosols and aerosols, suspensions, emulsions, foams, and micellar systems) are also topics of the journal. Colloid Journal also includes the phenomena of electro- and diffusiophoresis, electro- and thermoosmosis, and capillary and reverse osmosis, i.e., phenomena dealing with the existence of diffusion layers of molecules and ions in the vicinity of the interface.
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