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通过顺序结晶,通过纳米阵列强化超耐用的纳米纤维膜.

Xiquan Cheng1,2, Mi Zhou3, Jingwen Zhou3

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概括

这项研究通过整合共价有机框架 (COF) 和聚乙 (PEEK) 来开发增强的聚合物纳米纤维膜 (PNM). 新型结构显著提高了机械强度和稳定性,用于油性水分离.

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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
  • 纳米技术纳米技术

背景情况:

  • 聚合物纳米纤维膜 (PNM) 在机械强度和稳定性方面面临限制,特别是在油性水分离方面.
  • 现有的膜在艰难的条件和污染中扎,阻碍了有效的油水分离.

研究的目的:

  • 为了提高PNM的机械强度,稳定性和水友性,用于苛刻的应用.
  • 开发一种新的膜结构,以提高油性水分离性能.

主要方法:

  • 共价有机框架 (COF) 和聚乙 (PEEK) 的连续结晶.
  • 将超性COF纳米阵列层集成到PEEK纳米纤维中.
  • 通过聚合物链纠和异质相互透,创建一个机械互锁结构.

主要成果:

  • 实现了增强的机械性能,拉伸强度为16.2 MPa.
  • 在恶劣条件下表现出卓越的稳定性.
  • 显著提高了乳液透度 (3.4 × 10^4 L m−2 h−1 bar−1) ,在100个循环中产生最小的不可逆转的污垢.

结论:

  • 开发的COF-PEEK PNMs表现出卓越的机械强度,稳定性和水友性.
  • 机械互锁结构和COF纳米阵列是提高性能的关键.
  • 这些先进的膜超越了油性水分离的最先进材料.