Transport and retention behaviors of deformable polyacrylamide microspheres in convergent–divergent microchannels
Transport and retention behaviors of deformable polyacrylamide microspheres in convergent–divergent microchannels
复制标题
可变形聚丙烯酰胺微球在收敛发散微通道中的传输和保留行为
DOI：
10.1021/acs.est.0c02243
复制
发表时间：
2020
影响因子：
11.4
通讯作者：
Tammo S. Steenhuis
中科院分区：
文献类型：
--
作者：
Yao Chuanjin;Liu Baishuo;Li Lei;Zhang Kai;Lei Guanglun;Tammo S. Steenhuis
了解软颗粒在微观尺度上的运输和保留行为，对于设计、评估和应用工程颗粒材料在能源、环境和可持续发展领域至关重要。构建了聚散微通道仿真模型，研究了软质可变形聚丙烯酰胺微球在不同条件下的输运和滞留行为。观察到五种不同类型的运移和滞留模式，即表面沉积、平滑通过、直接拦截、变形迁移和刚性阻塞。定量分析了不同型式引起的流动阻力变化特征。研究了流速、孔喉大小、颗粒大小和注射浓度对输运和滞留模式的影响，并绘制和讨论了输运和滞留模式图。
Knowledge of the transport and retention behaviors of soft deformable particles on the microscale is essential for the design, evaluation, and application of engineered particle materials in the fields of energy, environment, and sustainability. Emulated convergent–divergent microchannels were constructed and used to investigate the transport and retention behaviors of soft deformable polyacrylamide microspheres at various conditions. Five different types of transport and retention patterns, i.e., surface deposition, smooth passing, direct interception, deforming remigration, and rigid blockage, are observed. Flow resistance variation characteristics caused by different patterns were quantitatively analyzed. Effects of flow rate, pore-throat size, particle size, and injection concentration on transport and retention patterns have been studied, and transport and retention pattern maps are presented and discussed.