Interactions between smectites and polyelectrolytes
Interactions between smectites and polyelectrolytes
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蒙皂石与聚电解质之间的相互作用
DOI：
10.1016/j.clay.2020.105778
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发表时间：
2020-11
影响因子：
5.6
通讯作者：
ZHOU Chun Hui
中科院分区：
文献类型：
--
作者：
SHEN Cheng Cheng;PETIT Sabine;LI Cun Jun;LI Chun Sheng;KHATOON Nafeesa;ZHOU Chun Hui
蒙脱石与聚电解液之间的相互作用对蒙脱石/聚电解液体系的专有吸附、絮凝和触变性起着至关重要的作用。该材料广泛应用于钻井液、制药、涂料和染料、陶瓷、造纸和水处理等许多行业。综述了不同类型的聚电解质与蒙脱石的相互作用及其在絮凝和工业废水中的应用。考察了与聚电解质有关的几个参数如电荷密度、电荷类型和相对分子质量，以及蒙脱石的类型、颗粒大小、组成、pH和水体系中的浓度对其的影响。详细讨论了蒙脱石与聚电解质的相互作用力，包括疏水作用力、离子作用力、氢键作用力、范德华力作用力和静电作用力。蒙脱石与阳离子聚电解质、阴离子聚电解质与两性聚电解质之间的相互作用力影响蒙脱石-聚电解质胶体分散体的絮凝作用，如沉降力、絮凝力等。然而，蒙脱石和聚电解质之间的相互作用以及它们在吸附、絮凝和触变等方面的行为及其内在机理尚未完全清楚。今后蒙脱石与聚电解质相互作用的深入研究对开发功能材料和拓展其他聚电解质/蒙脱石矿物体系的应用具有重要意义。
Interactions between smectite and polyelectrolyte play an essential role in exclusive adsorption, flocculation, and thixotropic properties of aqueous smectite/polyelectrolyte system. The materials are widely used in many industries such as drilling fluids, pharmaceuticals, paints and dyes, ceramics, papermaking and water treatment. This review focuses on the interaction between different types of polyelectrolytes and smectite, and their applications in flocculation and industrial wastewaters. The effect of several parameters related to polyelectrolyte such as charge density, charge type and molecular weight, as well as to smectite such as type, particle size, composition, pH and concentration in the aqueous system, were examined. The interactive forces between smectite and polyelectrolyte including hydrophobic interaction, ion binding, hydrogen bonding, van der Waals forces and electrostatic were thoroughly discussed. The interactive forces between smectite and cationic polyelectrolyte, anionic polyelectrolyte and amphoteric polyelectrolyte influence the flocculation of colloidal smectite-polyelectrolyte dispersions such as settling and floc dispersion. However, the interaction between smectites and polyelectrolytes and their subsequent behaviors in adsorption, flocculation, and thixotropy along with inherent mechanisms have not yet fully understood. Future in-depth work on interactions between smectites and polyelectrolytes has great implications for developing functional materials and expanding applications of other polyelectrolyte/ smectite mineral system.
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影响因子：
2.4
作者：
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通讯作者：
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通讯作者：
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影响因子：
3
作者：
Bai, Xiaodong;Yang, Yi;Wang, Xu
通讯作者：
Wang, Xu