聚合物包裹的油滴和聚合物颗粒具有复杂的曲线多面体几何形状,由表面活性剂驱动的聚合物囊的弹性毛囊结
Xuanrong Guo1, Saverio E Spagnolie2, Nicholas L Abbott1
1Department of Chemical and Biological Engineering, University of WisconsinMadison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States.
概括
将表面活性剂添加到含有油滴的聚合物微囊中,会导致复杂的形状变化. 这种由弹性纤维毛细化驱动的现象,允许模拟具有独特几何形状的新型聚合物颗粒.
科学领域:
- 合体和表面科学科学
- 聚合物科学 聚合物科学
- 材料科学 材料科学 材料科学
背景情况:
- 表面活性剂对于控制合体系统中的界面张力至关重要.
- 聚合物微囊和封装液滴是各种应用中的关键组件.
研究的目的:
- 为了研究油聚合物微囊的复杂形状转换由表面活性剂诱导.
- 探索这些系统中弹性纤维毛细体的潜在机制.
- 用这些形状变化来展示模拟异型聚合物颗粒的方法.
主要方法:
- 视频显微镜和共聚焦显微镜被用来观察形状的演变.
- 表面活性剂度,电荷,囊特性和滴滴大小的系统变化.
- 光聚合和使用可降解的聚合物用于粒子合成.
主要成果:
- 微分子表面活性剂度诱导了复杂的,在囊和水滴中的异型形状.
- 形状演变受到表面活性剂特性,囊尺寸和滴滴大小的影响.
- 弹性毛囊被确定为观察到的形状变化背后的驱动力.
- 通过光聚合实现了通过光聚合成功模板化的异性质聚合物颗粒.
- 可降解子允许隔离没有子的复杂聚合物颗粒.
结论:
- 表面活性剂诱导的弹性毛囊形成为控制微囊和液滴形态提供了一条新的途径.
- 这种方法为合成复杂的异构性聚合物颗粒提供了一种多功能方法.
- 创造无粒子的能力扩大了先进材料设计的可能性.
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