界面能量作为一种在光聚合治愈过程中设计两位式表面的方法
Sabrina J Curley1, Caroline R Szczepanski1
1Department of Chemical Engineering & Materials Science, Michigan State University, East Lansing, MI, 48824, USA. szcz@msu.edu.
Soft matter
|April 23, 2024
概括
光聚合诱导相分离 (PIPS) 在一个步骤中创建具有明显的疏水和疏水表面的材料. 这种方法可以实现可调的表面特性和复杂的化学梯度,用于先进的材料应用.
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
- 表面科学是一门学科.
背景情况:
- 光聚合诱导相分离 (PIPS) 是一种创建异质材料的方法.
- 反应的热力学和动力学对材料的组成和形态学有着重要的影响.
- 开发具有明显表面性能的材料对于各种应用至关重要.
研究的目的:
- 调查PIPS用于在单个步骤中创建具有疏水和亲水表面的材料的使用.
- 探索惰性添加物加载 (PMMA) 对相位分离和材料性能的影响.
- 用不同的模具接口来证明对域形成和表面湿度的控制.
主要方法:
- 使用光聚合诱导相分离 (PIPS) 用不同度的聚甲酸 (PMMA).
- 采用Fourier变换红外光谱 (FT-IR) 监测反应动力学和相分离.
- 研究了在模具中使用多个接口类型 (玻璃和不钢) 来引导域形成.
主要成果:
- 通过化学梯度弥合,在疏水面和疏水面之间的水接触角度差异为50°的材料.
- 增加的PMMA负载导致了更多的化学和机械上不同的宏观领域.
- 阶段分离和反应减速之间的时间间隔在PMMA修饰样本中增强了阶段分离.
- 定向域形成导致了富含酸盐的疏水表面和富含酸盐的疏水表面.
- 在单一材料表面上设计了有图案的湿透性.
结论:
- PIPS是一个多功能平台,用于在单个步骤中制造具有量身定制表面性能的复杂异质材料.
- 惰性添加剂的加载和模具接口的选择显著影响得到的材料形态和表面特征.
- 这种方法可以在没有利的接口的情况下创建具有截然不同的表面特性的材料,从而为先进的应用提供了可能性.
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