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Journal of Dispersion Science and Technology Volume 29, 2008 - Issue 5
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Original Articles

Salt‐Induced Micellization of Pluronic F88 in Water

K. Patel Department of Chemistry, V. N. South Gujarat University, Surat, IndiaCorrespondence[email protected]
,
P. Bahadur Department of Chemistry, V. N. South Gujarat University, Surat, India
,
C. Guo Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
,
J. H. Ma Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
,
H. Z. Liu Laboratory of Separation Science and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, China
&
K. Nakashima Faculty of Science and Engineering, Department of Chemistry, Saga University, Saga, Japan
Pages 748-755 | Received 30 Mar 2007, Accepted 15 Apr 2007, Published online: 21 Apr 2008
 
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The effect of potassium chloride on the micellization of a poly(ethylene oxide)‐poly(propylene oxide)‐poly(ethylene oxide) (PEO‐PPO‐PEO) triblock copolymer (Pluronic F88: EO103PO39EO103.) in water was studied by fluorescence, FTIR, 1H NMR, dynamic light scattering, and dye solubilization. The critical micellization temperature (CMT) values of the copolymer decreased with an increase of KCl concentration while micellar core gets progressively dehydrated. The results reveal the leading role of salt‐water interaction in promoting the micellization of PEO‐PPO‐PEO copolymer by the addition of salt. No significant micellar growth was seen even at temperatures close to cloud point.

This work is financially supported by the grant from University Grants Commision, New Delhi. [No F.31‐145/2005 (SR)].

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