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合物-聚合物混合物的缩变化的缩放变化

Hongyi Zou¹, Dingwei Zhang¹, Qingfei Fu²

¹School of Astronautics, Beihang University, Beijing 100191, China.

Journal of colloid and interface science

|July 13, 2024

概括

粒子大小影响掉落断动力学. 当粒子大小与聚合物网络规模相匹配时,出现新的缩放行为,影响工业应用中的滴滴碎片化控制.

科学领域:

风病学和流体动力学
软物质物理学软物质物理学

背景情况:

滴扣缩放法则受流体组成的影响.
粒子和聚合物网络之间的相互作用可以改变这些规律.

研究的目的:

研究聚乙烯氧化物 (PEO) 溶液中纳米颗粒对落断动态的影响.
探索由粒子-聚合物相互作用产生的新型缩放行为.

主要方法:

使用高速成像进行实验研究.
监测挤出滴的子直径 (h_min) 的时间演变.

主要成果:

观测到牛顿式结 (h_min ~ t^(2/3)) 接着是指数式或功率定律衰变.
在高纳米颗粒度下确定了三种不同的权力法制度.
发现缩放指数和临界厚度取决于聚合物度.

结论:

纳米颗粒的存在引入了新的缩放变化在滴首.
结果提供了对异质与均质稀释过渡的见解.
发现有助于预测和控制工业过程中的滴滴碎片化.

关键词:

合物-聚合物混合物放弃扣留的扣留方式.缩放变化的变化.稀释的动态稀释动态

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Colloids

Colloids

Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...