Multi-scale simulation of functionalization of rough polymer surfaces using atmospheric pressure plasmas
Multi-scale simulation of functionalization of rough polymer surfaces using atmospheric pressure plasmas
复制标题
使用大气压等离子体对粗糙聚合物表面的功能化进行多尺度模拟
DOI：
--
复制
发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. Kushner
中科院分区：
文献类型：
--
作者：
A. Bhoj;M. Kushner
大气压放电通常用于使商品聚合物材料的粗糙表面官能化以增强表面性质。高价值的聚合物材料，例如用于组织工程的支架，也必须对其表面进行处理以实现类似的功能。用于实现该功能的技术通常比用于聚合物片材的批量幅材处理的商品工艺更昂贵。我们正在研究的问题是，廉价的商品等离子体工艺是否可以适用于处理高价值材料，同时考虑微观和宏观尺度上的处理均匀性。为了解决这些问题，一个二维的等离子体流体力学表面动力学模型的开发和应用到大气压等离子体功能化的聚丙烯表面的微结构，使用He/O2/H2O混合物的调查。在官能化的不均匀性发生在宏观和微观的长度尺度，并可以通过明智地选择O2分数控制。
Atmospheric pressure discharges are routinely used to functionalize rough surfaces of commodity polymeric materials to enhance surface properties. High value polymeric materials, such as scaffolding for tissue engineering, must also have their surfaces treated to achieve similar functionality. The techniques used to achieve this functionality are typically costlier than the commodity processes used for bulk, web treatment of polymer sheets. The issue we are investigating is whether inexpensive, commodity plasma processes can be adapted to treat high value materials while considering the uniformity of processing on micro- and macro-scales. To address these issues a two-dimensional plasma hydrodynamics-surface kinetics model was developed and applied to the investigation of atmospheric pressure plasma functionalization of a polypropylene surface having microstructure using He/O2/H2O mixtures. Non-uniformities in functionalization occur over both macroscopic and microscopic length scales and can be controlled by a judicious choice of O2 fraction.