Microstructural and thermodynamic characterization of wormlike micelles formed by polydisperse ionic surfactant solutions.

Autor:	Flores SL; Department of Chemical Engineering, The University of Manchester, Oxford Rd., Manchester M13 9PL, United Kingdom., Mu J; Department of Chemical Engineering, The University of Manchester, Oxford Rd., Manchester M13 9PL, United Kingdom., Cabry CP; Department of Chemical Engineering, The University of Manchester, Oxford Rd., Manchester M13 9PL, United Kingdom., Peterson J; Department of Applied Mathematics and Theoretical Physics, The University of Cambridge, Wilberforce Rd., Cambridge CB3 0WA, United Kingdom., De Hert SC; Department of Chemical Engineering, The University of Manchester, Oxford Rd., Manchester M13 9PL, United Kingdom., Morrison L; Department of Chemical Engineering, The University of Manchester, Oxford Rd., Manchester M13 9PL, United Kingdom., Stott IP; Unilever Research & Development Port Sunlight, Bebington CH63 3JW, United Kingdom., Cook JL; Unilever Research & Development Port Sunlight, Bebington CH63 3JW, United Kingdom., Masters AJ; Department of Chemical Engineering, The University of Manchester, Oxford Rd., Manchester M13 9PL, United Kingdom., Hardacre C; Department of Chemical Engineering, The University of Manchester, Oxford Rd., Manchester M13 9PL, United Kingdom., Avendaño C; Department of Chemical Engineering, The University of Manchester, Oxford Rd., Manchester M13 9PL, United Kingdom.
Jazyk:	angličtina
Zdroj:	The Journal of chemical physics [J Chem Phys] 2023 Aug 07; Vol. 159 (5).
DOI:	10.1063/5.0153746
Abstrakt:	For industrial applications of self-assembled wormlike micelles, measurement and characterization of a micellar material's microstructure and rheology are paramount for the development and deployment of new high-performing and cost-effective formulations. Within this workflow, there are significant bottlenecks associated with experimental delays and a lack of transferability of results from one chemistry to another. In this work, we outline a process to predict microscopic and thermodynamic characteristics of wormlike micelles directly from rheological data by combining a more robust and efficient fitting algorithm with a recently published constitutive model called the Toy Shuffling model [J. D. Peterson and M. E. Cates, J. Rheol. 64, 1465-1496 (2020) and J. D. Peterson and M. E. Cates, J. Rheol. 65, 633-662 (2021)]. To support this work, linear rheology measurements were taken for 143 samples comprising a common base formulation of commercial sodium lauryl ether sulfate, cocamidopropyl betaine, and salt (NaCl). The steady state zero shear viscosity evident in linear rheology was measured in duplicate via direct steady and oscillatory shear experiments. Fitting the collected data to the model, we found trends in the microstructural and thermodynamic characteristics that agree with molecular dynamics simulations. These trends validate our new perspective on the parameters that inform the study of the relationship between chemical formulation and rheology. This work, when implemented at scale, can potentially be used to inform and test strategies for predicting self-assembled micellar structures based on chemical formulation. (© 2023 Author(s). Published under an exclusive license by AIP Publishing.)
Databáze:	MEDLINE
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