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Molecular Mass Dependence of Interfacial Tension in Complex Coacervation

Published

Author(s)

Debra Audus, Samim Ali, Artem Rumyantsev, Yuanchi Ma, Juan J. de Pablo, Vivek Prabhu

Abstract

The interfacial tension of coacervates, the liquidlike phase composed of oppositely charged polymers that coexists at equilibrium with a supernatant, forms the basis for multiple technologies. Here we present a comprehensive set of experiments and molecular dynamics simulations to probe the effect of molecular mass on interfacial tension $\gamma$, far from the critical point, and derive $\gamma = \gamma_\infty (1-h/N)$, where $N$ is the degree of polymerization, $\gamma_\infty$ is the infinite molecular mass limit, and $h$ is a constant that physically corresponds to the number of monomers of one chain within the coacervate correlation volume.
Citation
Physical Review Letters
Volume
126

Citation

Audus, D. , Ali, S. , Rumyantsev, A. , Ma, Y. , de Pablo, J. and Prabhu, V. (2021), Molecular Mass Dependence of Interfacial Tension in Complex Coacervation, Physical Review Letters, [online], https://doi.org/10.1103/PhysRevLett.126.237801, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=931146 (Accessed May 23, 2022)
Created June 11, 2021, Updated October 14, 2021