从内部获得强度:通过在纸板内形成醇-甲基醇聚合物的可逆增强纸张
Lukas D Bangert1, Nicole Kirchner2, Ching-Yi Choi1
1Department of Chemistry, Laboratory for Organic Synthesis of Functional Systems, Humboldt-Universität zu Berlin, Brook-Taylor-Str. 2, 12489 Berlin, Germany.
ACS applied materials & interfaces
|October 27, 2025
概括
一种新的薄纸聚合法 (InSPA) 均地用强的聚合物覆盖纸纤维,显著增强干燥和潮湿的强度. 这一过程提高了纸张完整性,用于诸如油/水分离等应用,并使其易于回收利用.
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
- 纸张工程 纸张工程
背景情况:
- 纸张的机械完整性至关重要,但聚合物增强通常会导致不均的涂层.
- 强烈的聚合物纤维相互作用可以阻碍均沉积,限制增强效率.
研究的目的:
- 开发一种在纤维素纤维上均聚合物沉积的方法,以提高纸张强度.
- 调查用于纸张增强的在位生成的聚合物具有醇-醇-连接性 (TCC) 的有效性.
主要方法:
- 利用板内聚合和粘附 (InSPA) 来直接在纤维素纤维上产生增强聚合物.
- 合成的TCC聚合物通过二醇异构体和 bisquinone A.之间的迈克尔类型的多添加反应.
- 研究了聚合物负载,纤维透率和涂层均性.
主要成果:
- 实现了高达48%重量的聚合物负载的均聚合物涂层.
- 证明了纸张强度的显著增加:干燥拉伸指数翻了一番,湿状态增加了7倍.
- 尽管高聚合物负载,但仍保持了纸张的多孔性,并引入了疏水性.
结论:
- InSPA的方法有效地用同质的聚合物涂层来加强纸质材料.
- TCC聚合物增强纸张的机械性能,使它们适合用于油/水分离膜.
- 聚合物涂层在以水为基础的工艺中是可拆卸的,使其能够在使用寿命结束时可回收利用.
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