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在域界面上用聚合物添加剂分离流体:一个散射粒子动力学研究

Dorothy Gogoi¹, Avinash Chauhan², Sanjay Puri¹

¹School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, India.

|July 5, 2023

概括

这项研究使用模拟来探索聚合物如何影响流体混合物. 增加聚合物度减缓了相位分离,改变了用于乳液稳定等应用的界面特性.

科学领域:

软物质物理学软物质物理学
材料科学材料科学材料科学
计算化学计算化学

背景情况:

与聚合物的三元流体混合物对于乳液和泡等应用至关重要.
控制界面属性是操纵材料行为的关键.

研究的目的:

研究三元流体混合物 (A,B,C) 中相分离动力学.
了解聚合物特性如何影响聚合物涂层形态的形成.
探索乳液稳定,风学,仿生设计和表面修饰的应用.

主要方法:

在d=3.3中进行散射粒子动力学 (DPD) 模拟.
模拟组件亲和力,以直接聚合物在接口上的自我组装.
聚合物度,链条刚度和长度的系统变化.

主要成果:

灵活的聚合物度影响相位分离动力学,显示动态缩放.
增加的聚合物度会降低生长速度,原因是表面张力较低,连接性有限.
聚合物链的刚性和长度影响动力学,而刚性链显示出更显著的偏差.

结论:

聚合物特性极大地控制相位分离动态和由此产生的形态.
定制聚合物特性为特定应用提供了一条调整界面属性的途径.
模拟结果为设计具有可控接口的先进材料提供了洞察力.

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