材料科学
生物污染
多孔性
膜
聚合物
嫁接
介孔材料
化学工程
共聚物
复合材料
有机化学
遗传学
生物
工程类
催化作用
化学
作者
Hidenori Kuroki,Alexey Gruzd,Ihor Tokarev,T. Patsahan,Jaroslav Ilnytskyi,Karsten Hinrichs,Sergiy Minko
标识
DOI:10.1021/acsami.9b06679
摘要
A facile route to biofouling-resistant porous thin-film membranes that can be fine-tuned for specific needs in diverse bioseparation, mass flow control, sensors, and drug delivery applications is reported. The proposed approach is based on combining two distinct macromolecular systems—a cross-linked poly(2-vinyl pyridine) network and a 3D-grafted polyethylene oxide (PEO) layer—in one robust porous material whose porosity can be adjusted within a wide range, covering the macroporous and mesoporous size regimes. Notably, this reconfigurable material maintains its antifouling properties throughout the entire range of pore size configurations because of a dense surface carpet of PEO chains with self-healing properties that are immobilized both onto the surface and inside the polymer network through what was termed 3D grafting. Experimental results are supplemented by computer simulations of a coarse-grained model of a porous membrane that shows qualitatively similar pore swelling behavior.
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