聚合物薄膜中的有序形态是由对流模式的复制产生的
Shengqing Xu1, Eugenia Kumacheva
1Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada.
Journal of the American Chemical Society
|February 14, 2002
概括
研究人员开发了一种新的方法,使用界面不稳定性来创建有序的聚合物膜. 这项技术将模板的图案复制成固体聚合物薄膜,可以精确控制薄膜地形.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物化学 聚合物化学
- 流体动力学 流体动力学
背景情况:
- 订购的聚合物薄膜对于先进的应用至关重要.
- 复制技术为控制膜形态提供了途径.
- 可以利用界面现象来形成模式.
研究的目的:
- 为生产订制聚合物薄膜提出新的战略.
- 为了利用接口不稳定性的复制来生成模式.
- 控制聚合物薄膜中的地形图案.
主要方法:
- 一个薄单体流体薄膜接触到一个聚二甲基氧模板.
- 在模板中诱导了表面张力驱动的对流 (贝纳德细胞).
- 模式通过UV诱导的聚合复制到单体层中.
- 移除模板液体,留下有图案的聚合物薄膜.
主要成果:
- 有控制地形的订购聚合物薄膜已经成功生产出来.
- 模式的横向和垂直周期性是由模板流体特性决定的.
- 模板中的贝纳德细胞被有效复制并被困在聚合物中.
结论:
- 拟议的战略为制造订制聚合物薄膜提供了一种可行的方法.
- 接口不稳定性的复制提供了对薄膜纳米结构的精确控制.
- 这种技术有可能创造出具有量身定制表面性能的先进材料.
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