Phase behavior of polyampholytes from charged hard-sphere chain model

The Journal of Chemical Physics
Jianwen JiangYing Hu

Abstract

A molecular thermodynamic theory is developed for polyampholytes from the coarse-grained charged hard-sphere chain model. The phase behavior of polyampholytes with variations in sequence and chain length is satisfactorily predicted by the theory, consistent with simulation results and experimental observations. At a fixed chain length, the phase envelope expands as the sequence of charge distribution becomes less random. With increasing chain length, the phase envelope expands for diblock and random polyampholytes, but shrinks for zwitterionic polyampholytes. The predicted critical temperature, density, and pressure exhibit scaling relations with chain length for all the three (diblock, random, and zwitterionic) polyampholytes.

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Citations

Aug 28, 2012·The Journal of Chemical Physics·M BorówkoJ M Ilnytskyi
Nov 9, 2016·Physical Review Letters·Yi-Hsuan LinHue Sun Chan
Apr 10, 2019·Polymers·Sarkyt E Kudaibergenov, Nurxat Nuraje
Apr 6, 2019·Proceedings of the National Academy of Sciences of the United States of America·Scott P O DanielsenGlenn H Fredrickson
Aug 12, 2014·The Journal of Physical Chemistry. B·Markus C Arndt, Gabriele Sadowski
Feb 6, 2018·The Journal of Physical Chemistry. B·Suman DasHue Sun Chan

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