Solubilization of Phenol in Micelles of (Ethylene Oxide)78(Propylene Oxide)30(Ethylene Oxide)78 Pluronic F68 Tri-Block Copolymer in Aqueous Suspensions

被引:2
|
作者
Ben Henda, M. [1 ,2 ]
机构
[1] Majmaah Univ, Coll Sci, Phys Dept, Al Majmaah 11952, Saudi Arabia
[2] Tunis El Manar Univ, Fac Sci Tunis, Phys Lab Soft Matter & Electromagnet Modelling, Tunis, Tunisia
来源
关键词
copolymer conformation; phenol solubilization; Pluronic F68; rheology; WATER-OIL SYSTEMS; TRIBLOCK COPOLYMER; PHASE-BEHAVIOR; MICELLIZATION; AGGREGATION; MICROSTRUCTURE; TRANSITION; BINDING; GROWTH; PH;
D O I
10.1080/00222348.2021.1919387
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The effect of phenol solubilization on the behavior of (ethylene oxide)(78)-propylene oxide)(30)-(propylene oxide)(78) (EO78-PO30-EO78) tri-block copolymer, Pluronic F68 (F68), in aqueous suspensions was investigated by rheology. We have shown that for the ternary F68/water/phenol mixture, the rheological properties and the conformational changes of F68 depended strongly on the amounts of phenol. The 20% F68 suspensions begin with a Newtonian behavior for small amounts of phenol and lose this behavior to become a non-Newtonian liquid plastic with increasing phenol concentrations (50% phenol); then the suspension became Newtonian again for 75% and 100% phenol. The results are attributed to the addition of phenol resulting in a sphere-to-rod micellar transition.
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页码:855 / 865
页数:11
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