NDLI: Manipulating the interfacial interactions of composite membranes <i>via</i> a mussel-inspired approach for enhanced separation selectivity

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Manipulating the interfacial interactions of composite membranes via a mussel-inspired approach for enhanced separation selectivity

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Journal of Materials Chemistry A Vol - 3 Issue - 29

Journal of Materials Chemistry A Vol - 3 Issue - 19

Journal of Materials Chemistry A Vol - 3 Issue - 9

Journal of Materials Chemistry A Vol - 3 Issue - 8

Journal of Materials Chemistry A Vol - 3 Issue - 7

Journal of Materials Chemistry A Vol - 3 Issue - 6

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Journal of Materials Chemistry A Vol -2

Journal of Materials Chemistry A Vol -1

Manipulating the interfacial interactions of composite membranes via a mussel-inspired approach for enhanced separation selectivity

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhang, Peng Wang, Baoyi Cao, Xingzhong Zhao, Jing Jiang, Zhongyi Fang, Chenhao Pan, Fusheng Zhu, Yiwei He, Guangwei
Copyright Year	2015
Abstract	For the broadly utilized composite membranes with dense separation layers and porous support layers, the rational manipulation of interfacial interactions between these two layers is vital in optimizing the membrane structure and the associated performance. In this study, we report a facile mussel-inspired approach to enhance the separation selectivity of composite membranes by co-depositing biomimetic adhesive dopamine and poly(ethylene imine) (PEI) on a support layer and then coating with sodium alginate (SA) as the separation layer. PEI is anchored onto the support layer surface through the reaction with dopamine during the polydopamine (PDA) formation process, thus incorporating the electrostatic attraction interaction into the interface in addition to the hydrogen bond interaction between PDA and SA. Using water/alcohol separation as the model system, the separation factor of the SA/PEI–PDA/PAN membrane can reach 1807, which is 29.6 and 6.8 times higher than those of SA/PAN and SA/PDA/PAN membranes, respectively. The remarkably enhanced separation factor arises from the optimal free volume property and swelling resistance of the membrane under the optimized interfacial interactions between the separation layer and support layer. This study may present an efficient and facile approach for tailoring the membrane structure for an enhanced separation performance.
Starting Page	19980
Ending Page	19988
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	3
Issue Number	39
Journal	Journal of Materials Chemistry A
DOI	10.1039/c5ta04524j
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Biomimetics Dopamine Ethylene Imine Alginic acid Personal digital assistant Hydrogen bond
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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Manipulating the interfacial interactions of composite membranes via a mussel-inspired approach for enhanced separation selectivity

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Manipulating the interfacial interactions of composite membranes via a mussel-inspired approach for enhanced separation selectivity

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