Effect of Salt Concentration on Electric Potential of Macro-ions
Date
2019-09-10
Authors
Qamhieh, Khawla
Turkman, Haneen
Abuasabeh, Nehal
Njoom, Isra
Journal Title
Journal ISSN
Volume Title
Publisher
Al-Quds University, Deanship of Scientific Research
Abstract
Electric charges and electrostatic interactions are ubiquitous in soft-matter and biological systems. Soft materials are typically composed of macromolecules such as polymers, colloids and proteins which often acquire surface charges when dissolved in a polar solvent like water. Charged macromolecule, called macro-ions, such as micelles, DNA, dendrimers and other nanoparticles are important in Gens therapy, drug delivery, and other applications in biotechnology. In our study the effect of salt concentration on the electrostatic interaction in asymmetric electrolyte is investigated using Poisson-Boltzmann (PB) model. From our study we conclude that by increasing salt concentration, the surface electric potential of the macroion and the debey screening length should decrease, and these effects should increase by increasing the valence of the counter-ions.