基于纤维素和烯酸的共聚物制成的膜,由联合溶液制成
Igor S Makarov1, Gulbarshin K Shambilova2,3, Markel I Vinogradov1
1A.V. Topchiev Institute of Petrochemical Synthesis, Russian Academy of Sciences, Leninsky Prospect, 29, 119991 Moscow, Russia.
Membranes
|July 28, 2023
概括
来自纤维素和聚烯 (PAN) 的复合膜被开发用于溶剂回收. 这些膜显示出更好的保留和透性,为增强的分离过程提供了潜力.
科学领域:
- 聚合物科学与工程 聚合物科学与工程
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 纤维素和多烯 (PAN) 具有出色的化学耐药性,使它们适合用于溶剂回收膜.
- 传统的膜在恶劣的溶剂环境中经常面临局限性,需要开发强大的复合材料.
研究的目的:
- 研究高度缩的纤维素和PAN混合溶液的形态学和风湿学特性.
- 从这些混合溶液制造和表征复合膜,用于溶剂回收应用.
- 为了评估由此产生的复合膜的运输特性.
主要方法:
- 制备高度 (18重量%) 的纤维素和PAN混合溶液在N-methylmorpholine-N-oxide中.
- 混合溶液的形态和学特征.
- 复合膜的制造及其保留 (Remazol,Orange) 和透性 (乙醇) 性能的评估.
主要成果:
- 混合溶液表现出两相形态,受成分比率和加工历史的影响.
- 非单调的粘度变化表明纤维素和PAN之间的特定相互作用.
- 复合膜的染料保留率明显高于纯纤维素膜,乙醇的透性增加与更高的PAN含量相关.
结论:
- 来自纤维素和PAN的复合膜可以使用标准纤维素膜技术进行加工.
- 引入PAN改变了结构秩序,并增强了纤维素膜的运输特性.
- 这些复合膜在溶剂回收和分离过程中表现出有前途的性能.
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