用于超低摩擦特性的PDMS表面涂料的制备和性能
Weiwei Chen1,2, Bo Xu2, Qichen Tang1
1School of Mechanical Engineering, Jiangnan University, Wuxi, Jiangsu 214122, China.
Langmuir : the ACS journal of surfaces and colloids
|October 3, 2023
概括
研究人员开发了一种新的紫外线固化方法,在聚二甲基素 (PDMS) 上创建超低摩擦,水友的表面. 这种表面修改减少了99.7%的摩擦,改善了医疗器械的生物相容性.
科学领域:
- 材料科学 材料科学 材料科学
- 生物医学工程 生物医学工程
- 表面化学 表面化学
背景情况:
- 聚甲基 (PDMS) 由于其有利的特性,在生物医学应用中被广泛使用.
- 然而,PDMS固有的疏水性会导致组织损伤等问题,限制其在干预导管等器件中的使用.
- 目前的表面修改技术存在一些局限性,例如对厚度和表面强度的控制不佳.
研究的目的:
- 开发一种新的方法,在PDMS上创建友水性,低摩擦的表面.
- 提高生物相容性,减少与PDMS医疗器械相关的患者不适.
- 克服现有的表面改造方法的缺陷.
主要方法:
- 利用紫外线 (UV) 光固化在PDMS表面通过现场聚合来聚合烯胺 (AM) 单体.
- 包含不同度的2-烯-2-甲基硫酸 (AMPS) 来控制表面粗度.
- 系统地描述了由此产生的涂料的特性.
主要成果:
- 紫外线固化方法成功地在PDMS上创建了具有超低摩擦性能的适水性涂层.
- 增加AMPS度导致表面粗度和涂层厚度下降.
- 经过修改的PDMS表面在脱离离子水中达到0.0075的摩擦系数 (CoF),与未经修改的PDMS相比降低了99.7%.
- 较低的表面粗度与提高的低摩擦性能相关.
结论:
- 开发的紫外线固化技术提供了一种有效的方法,可以在PDMS上制备水友,低摩擦的表面.
- 这种表面修改显著提高了PDMS在生物医学应用中的性能,特别是干预导管.
- 这些发现为设计先进的聚合物表面改造提供了宝贵的见解.
相关概念视频
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01:30Dry Friction
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