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首页> 外文期刊>RSC Advances >Influence of temperature, added electrolyte, and polymer molecular weight on the counterion-condensation phenomenon in aqueous solution of sodium polystyrenesulfonate: a scaling theory approach
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Influence of temperature, added electrolyte, and polymer molecular weight on the counterion-condensation phenomenon in aqueous solution of sodium polystyrenesulfonate: a scaling theory approach

机译：温度，添加电解质和聚合物分子量对聚苯乙烯酸钠水溶液中抗衡缩现象的影响：缩放理论方法

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摘要

Interactions between a polyion and its counterions in aqueous solutions of an anionic polyelectrolyte sodium polystyrenesulfonate in the presence of sodium chloride were investigated using electrical conductivity as the probe. The specific conductivity vs. polyelectrolyte concentration data were analyzed with an equation recently developed by us considering the scaling description for the conformation of a polyion chain. The influences of (a) the molecular weight and the concentration of the polyelectrolyte, (b) the added electrolyte concentration, and (c) the temperature on polyion-counterion interactions were investigated. The extent of counterion condensation was found to be greatly affected by the concentration and molecular weight of the polyelectrolyte, the concentration of the added electrolyte, and the temperature. The polyion equivalent conductivity in conjunction with the derived coefficient of friction between the monomer units and the solvent provided important information concerning the relative importance of the size and charge of the polyions. The overall results have been elucidated taking the medium dielectric constant, the hydration behaviour of the counterions, and the coiling behavior of the polyion chains into account. The present study provides new insight as to how the polyelectrolyte molecular weight influences the counterion condensation behaviour in a polyelectrolyte solution in the presence of an added electrolyte.
机译：使用电导率作为探针研究在氯化钠存在下阴离子聚电解质钠聚苯乙烯酸钠的聚苯磺酸氢酸钠水溶液之间的相互作用。通过我们最近通过美国开发的等式对聚电解质浓度数据进行分析的具体电导率与聚电解质浓度数据考虑聚亚基链的构象的缩放描述。 （a）的分子量和聚电解质的浓度，（b）添加的电解质浓度，（c）研究了对聚偶抗体相互作用的温度的影响。发现抗衡离子的程度受到聚电解质的浓度和分子量，添加电解质的浓度和温度的大大影响。聚硫末等效电导率结合单体单元与溶剂之间的衍生摩擦系数提供了关于聚乙酰的尺寸和电荷的相对重要性的重要信息。总体结果阐述了中介电常数，抗衡离子的水化行为，以及聚梭链的卷绕行为考虑。本研究提供了新的洞察，即多电解质分子量如何在添加的电解质存在下影响聚电解质溶液中的抗衡离子凝结性能。

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  • 来源
    《RSC Advances》 |2015年第68期|共9页
  • 作者

    De Ranjit; Ray Dhiman; Das Bijan;

  • 作者单位

    GIST APRI Gwangju 500712 South Korea;

    Presidency Univ Dept Chem Kolkata 700073 India;

    Presidency Univ Dept Chem Kolkata 700073 India;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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