Agglomerating Agent Emulsions Synergistically Stabilized by Surfactants and SiO2 Nanoparticles: Stability, Mechanism, and Applications for PBL Agglomeration

IF 3.9 3区化学 Q2 POLYMER SCIENCE

Journal of Polymer Science Pub Date : 2024-11-15 DOI:10.1002/pol.20240555

Li Zhao, Shulai Lu, Ming Chen, Yuchao Wang, Shicheng Zhao

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引用次数: 0

Abstract

The stability of agglomerating agent is an important parameter to evaluate its value, which is of great significance for its subsequent transportation, storage, and practical application. In this study, a highly stable agglomerating agent synergistically stabilized by sodium dodecyl sulfate (SDS) and SiO2 was synthesized. The stabilization mechanism of the agglomerating agent and its agglomeration effect on polybutadiene latex (PBL) were studied. First, the mean particle size, particle size distribution, interfacial tension, and viscosity of the agglomerating agent emulsion stabilized by SDS/SiO2 has been investigated and compared with those of conventional emulsion stabilized by SDS. The results show that when the SDS concentration is lower than 0.125%, the presence of SiO2 can significantly increase the anticoagulation ability of agglomerating agent particles in the polymerization process. Furthermore, noting that agglomerating agent emulsions stabilized by SDS/SiO2 exhibited high stability even pH, centrifugation, storage, and temperatures changed in wide range. In addition, the stability of the agglomerating agents synergistically stabilized by surfactants and SiO2 nanoparticles is better than using them alone. Then, the stability mechanism of SiO2 in the agglomerating agent was investigated. The results revealed that the SiO2 particles are tightly adsorbed on the surface of the agglomerating agent particles through hydrogen bonding and play a physical isolation role. Finally, the 100 nm PBL was enlarged to 469 nm by a synthetic agglomerating agent. Surprisingly, the SiO2 particles show excellent physical isolation role, not only in agglomerating agent but also in agglomerated PBL. Our findings provide novel insights into the synthesis of highly stable agglomerating agent and improve the practical application significance of subsequent PBL agglomerations and ABS properties.

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表面活性剂和二氧化硅纳米颗粒协同稳定的凝聚剂乳液：PBL 凝聚的稳定性、机理和应用

团聚剂的稳定性是评价其价值的一个重要参数，对其后续的运输、储存和实际应用具有重要意义。本研究合成了一种由十二烷基硫酸钠（SDS）和二氧化硅协同稳定的高稳定性团聚剂。研究了团聚剂的稳定机理及其对聚丁二烯胶乳（PBL）的团聚效果。首先，研究了 SDS/SiO2 稳定的团聚剂乳液的平均粒径、粒径分布、界面张力和粘度，并与 SDS 稳定的传统乳液进行了比较。结果表明，当 SDS 浓度低于 0.125% 时，SiO2 的存在能显著提高聚合过程中凝集剂粒子的抗凝能力。此外，SDS/SiO2 稳定的凝集剂乳液在 pH 值、离心、储存和温度变化较大的情况下也表现出较高的稳定性。此外，由表面活性剂和 SiO2 纳米粒子协同稳定的团聚剂的稳定性要优于单独使用表面活性剂和 SiO2 纳米粒子的团聚剂。然后，研究了 SiO2 在团聚剂中的稳定性机理。结果表明，SiO2 颗粒通过氢键紧密吸附在团聚剂颗粒表面，起到物理隔离作用。最后，通过合成团聚剂将 100 nm 的 PBL 增大到 469 nm。令人惊讶的是，SiO2 颗粒不仅在团聚剂中，而且在团聚的 PBL 中都表现出了出色的物理隔离作用。我们的发现为高稳定性团聚剂的合成提供了新的见解，并提高了后续 PBL 团聚和 ABS 性能的实际应用意义。

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来源期刊

Journal of Polymer Science POLYMER SCIENCE-

CiteScore

6.30

自引率

5.90%

发文量

264

期刊介绍： Journal of Polymer Research provides a forum for the prompt publication of articles concerning the fundamental and applied research of polymers. Its great feature lies in the diversity of content which it encompasses, drawing together results from all aspects of polymer science and technology. As polymer research is rapidly growing around the globe, the aim of this journal is to establish itself as a significant information tool not only for the international polymer researchers in academia but also for those working in industry. The scope of the journal covers a wide range of the highly interdisciplinary field of polymer science and technology.