Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan.
Electrophoresis. 2021 Nov;42(21-22):2182-2188. doi: 10.1002/elps.202000339. Epub 2021 Jan 6.
Approximate analytic expressions are derived for the electrophoretic mobility of a weakly charged spherical soft particle consisting of the particle core covered with a surface layer of polymers in an electrolyte solution. The particle core and the surface polymer layer may be charged or uncharged. The obtained electrophoretic mobility expressions, which involve neither numerical integration nor exponential integrals, are found to be in excellent agreement with the exact numerical results. It is also found that the obtained mobility expressions reproduce all the previously derived limiting expressions and approximate analytic expressions for the electrophoretic mobility of a weakly charged spherical soft particle.
本文推导了在电解质溶液中，由带电荷或不带电荷的粒子核和聚合物表面层组成的弱带电球形软粒子电泳迁移率的近似解析表达式。所得电泳迁移率表达式既不需要数值积分也不需要指数积分，与精确数值结果吻合得非常好。还发现，所得迁移率表达式再现了之前推导的弱带电球形软粒子电泳迁移率的所有限制表达式和近似解析表达式。
