Physicochemical approaches reveal the impact of electrolytes and hydrotropic salt on micellization and phase separation behavior of polymer polyvinyl alcohol and surfactant mixture

被引：18

作者：

Rather, Sami-ullah ^{[1
]}

Rahman, Md. Habibur ^{[2
]}

Bamufleh, Hisham S. ^{[1
]}

Alhumade, Hesham ^{[1
]}

Taimoor, Aqeel Ahmad ^{[1
]}

Saeed, Usman ^{[1
]}

Sulaimon, Aliyu Adebayo ^{[3
]}

Alalayah, Walid M. ^{[1
]}

Shariff, Azmi Mohd ^{[4
]}

Hoque, Md Anamul ^{[2
]}

机构：

[1] King Abdulaziz Univ, Dept Chem & Mat Engn, POB 80204, Jeddah 21589, Saudi Arabia

[2] Jahangirnagar Univ, Dept Chem, Dhaka 1342, Bangladesh

[3] Univ Teknol PETRONAS, Dept Petr Engn, Bandar Seri Iskandar 32610, Perak, Malaysia

[4] Univ Teknol PETRONAS, Dept Chem Engn, Bandar Seri Iskandar 32610, Perak, Malaysia

来源：

INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES | 2023年 / 235卷

关键词：

PVA; Micellization; Cloud point; Phase separation; Thermodynamics; SODIUM DODECYL-SULFATE; CRITICAL MICELLE CONCENTRATION; ENTHALPY-ENTROPY COMPENSATION; CLOUD POINT; THERMODYNAMIC PROPERTIES; DIFFERENT TEMPERATURES; NONIONIC SURFACTANTS; AGGREGATION BEHAVIOR; AQUEOUS-SOLUTIONS; ORGANIC-SOLVENTS;

D O I：

10.1016/j.ijbiomac.2023.123761

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The polymer-surfactant mixture has usages in numerous industries mainly in the production of daily used ma-terials. Herein, the micellization and phase separation nature of the sodium dodecyl sulfate (SDS) and TX-100 along with a synthetic water-soluble polymer-polyvinyl alcohol (PVA) have been conducted using conductiv-ity and cloud point (CP) measurement tools. In the case of micellization study of SDS + PVA mixture by con-ductivity method, the CMC values were obtained to be dependent on the categories and extent of additives as well as temperature variation. Both categories of studies were performed in aq. solutions of sodium chloride (NaCl), sodium acetate (NaOAc), and sodium benzoate (NaBenz) media. The CP values of TX 100 + PVA were decreased and enhanced in simple electrolytes and sodium benzoate media respectively. In all cases, the free energy changes of micellization (Delta Gm0) and clouding (Delta Gc0) were obtained as negative and positive respectively. The enthalpy (Delta Hm 0) and entropy (Delta Sm0) changes for SDS + PVA system micellization was negative and positive respectively in aq. NaCl and NaBenz media, and in aq. NaOAc medium the Delta Hm0 values were found negative while Delta Sm0 were found negative except at the highest studied temperature (323.15 K). The enthalpy-entropy compensation of both processes was also assessed and described clearly.

引用

页数：11