研究区块共聚合物膜中的微结构演变
Anthony J Cooper1, Douglas J Grzetic2, Kris T Delaney3
1Department of Physics, University of California, Santa Barbara, California 93106, USA.
The Journal of chemical physics
|February 21, 2024
概括
动态自相一致的场理论模型非溶剂诱导相分离 (SNIPS) 用于块共聚物膜. 了解参数效应是制造高性能整体非对称膜的关键.
科学领域:
- 材料科学 材料科学 材料科学
- 聚合物科学 聚合物科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 块共聚物自组装和非溶剂诱导相分离 (SNIPS) 对于积分非对称膜制造至关重要.
- 在SNIPS中的众多配方和处理参数阻碍了可靠的高性能膜构造.
研究的目的:
- 使用动态自一致场理论建模SNIPS过程.
- 研究溶剂选择性,非溶剂选择性,初始薄膜成分和玻璃过渡成分对膜形态学的影响.
主要方法:
- 动态自一致场理论的应用.
- 对微粒结构和膜矩阵形成的参数效应的分析.
- 检查表面层的顺序和层的连接性.
主要成果:
- 确定了溶剂选择性和聚合物度对菌体结构的关键作用.
- 证明表面层的顺序和层的连接性对所有研究的参数都很敏感.
- 揭示了在维护表面层完整性和确保层连接方面存在的重大挑战.
结论:
- 在SNIPS中的参数灵敏度需要仔细控制,以成功制造区块共聚合物膜.
- 获得的见解可以指导整体非对称膜的合理设计和优化.
- 为预测和控制膜形态提供了一个理论框架.
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