Abstract
In this study, a coarse-grained molecular dynamic simulation was employed to test the influence of salts in morphology of structures in surfactant-polymer solutions. The surfactant was cetyltrimethyl ammonium chloride (CTAC) and the polymer was polyacrylamide (PAM). Six different salt concentrations were studied in the mixed surfactant-polymer solutions, and pure surfactant solutions with salts were also tested as control groups. By analyzing the shapes of micelles and the CTA+ aggregation number of micelles, we noted that the proper salt concentration can facilitate the formation of large micelles. In too high or too low salt concentration solutions only spherical or short rodlike micelles exist. The existence of PAM can also facilitate the formation of large micelles because polymers act as “bridges” and increase the probability of touch and coalescence of micelles.
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Acknowledgements
The present work is supported by National Natural Science Foundation of China (No. 51636006, No. 51225601, No. 21803040). The Fundamental Research Funds for the Central Universities (No. cxtd2017004).
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Liu, D., Liu, F., Zhou, W., Chen, F., Wei, J. (2020). Influence of Salts on Morphology of Structures in Surfactant-Polymer Solutions Explored by Coarse Grained Dynamic Simulation. In: Okada, H., Atluri, S. (eds) Computational and Experimental Simulations in Engineering. ICCES 2019. Mechanisms and Machine Science, vol 75. Springer, Cham. https://doi.org/10.1007/978-3-030-27053-7_75
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DOI: https://doi.org/10.1007/978-3-030-27053-7_75
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