Fabrication of dual‐layer poly(styrene‐<i>b</i>‐4‐vinyl pyridine)–poly(vinylidene fluoride) membranes with tailored pore sizes under 10 nm via surface quaternization

Su, Yuehua; Liu, Y.; Liu, Taoran; Wang, X.

doi:10.1002/app.47137

Cited by 4 publications

(4 citation statements)

References 44 publications

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“…Moreover, redox-responsive membranes were obtained by functionalization of PHEMA with switchable organometallic moieties . A lot of effort has been carried out for postmodifying the hydrophilic block segment to widen the applications and switching capabilities of BCP membranes. − For example, Abetz and co-workers reported the successful coating of a PS- b -P4VP membrane with a polydopamine-based layer. , Subsequent click chemistry for the introduction of e.g. a zwitterionic compound improved the antifouling properties rendering a reduced adsorption of peptides of the membrane .…”

Section: Introductionmentioning

confidence: 99%

Amine-Containing Block Copolymers for the Bottom-Up Preparation of Functional Porous Membranes

et al. 2019

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The remarkable ability of biological systems to specifically recognize, sort, and process molecules encourages the development of novel bio-inspired membranes and interfaces. Herein, we focus on the functionalization of amphiphilic polystyrene-block-poly(2-hydroxyethyl methacrylate) (PS-b-PHEMA) with the amino acid glycine yielding polar block segments with primary amine functionalities. Excellent control over the tailored block copolymer (BCP) synthesis and functionalization is proven by size exclusion chromatography (SEC), 1H solution NMR, and 15N solid state NMR spectroscopy. For the first time, BCPs containing primary amines were used for the self-assembly and non-solvent induced phase separation (SNIPS) process for the preparation of isoporous and integral asymmetric membranes. Hexagonally arranged open pores with diameters of 19 nm were obtained as shown by scanning electron microscopy (SEM), atomic force microscopy (AFM), and pH-dependent water flux measurements. Additionally, the primary amine was subjected to convenient postmodification protocols. For instance, (fluorescent) dye molecules could be easily incorporated into the membrane structure, and peptide synthesis on the inner pore wall of the membrane could be accomplished. These novel and tailored porous materials will pave the way to a new generation of BCP membranes containing bio-inspired moieties and functionalities at the interfaces.

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Section: Introductionmentioning

confidence: 99%

Amine-Containing Block Copolymers for the Bottom-Up Preparation of Functional Porous Membranes

et al. 2019

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“…[224] Yu et al obtained precise pores ranging from 3 to 20 nm using poly(styreneco-vinyl pyridine) dope solution on a polyester support using SNIPS. [224] Yu et al obtained precise pores ranging from 3 to 20 nm using poly(styreneco-vinyl pyridine) dope solution on a polyester support using SNIPS.…”

Section: Recent Trends In Surface Modification Strategiesmentioning

confidence: 99%

The Key Role of Modifications in Biointerfaces toward Rendering Antibacterial and Antifouling Properties in Polymeric Membranes for Water Remediation: A Critical Assessment

Samantaray

Madras

Bose

2019

Advanced Sustainable Systems

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Safe drinking water for all is a major challenge and needs critical attention, as freshwater aquifers are rapidly declining. A strategy based on addressing scarcity through membrane‐based purification and desalination can be an immediate and robust solution. The current scientific advances toward tailoring the structure and chemical properties of existing membrane materials have enabled key insights leading to new water purification alternatives. In the first part of the article, the key requirements for water decontamination addressed through state‐of‐the‐art literature on membranes are discussed. In the next part, the specific membrane modification strategies to impede bacterial growth and enhance fouling resistance are discussed, bringing in the underlying mechanisms. Finally, promising next‐generation separation techniques that are inspired by nature, inorganic and carbonaceous nanomaterial‐based membranes, layer‐by‐layer assembly, and dynamic composite membranes, are highlighted. This perspective article will help guide researchers working in this field from both industrial and academic standpoints, especially where the research is focused toward developing strategies to modify the existing solution besides finding alternative and sustainable new materials.

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“…The bottom-up method for building transport barriers has the demonstrated advantages of ultra-thin thickness and tailored pore sizes [ 10 , 11 ]. Alternatively, block copolymers (BCPs) promise the scalable, feasible fabrication of isoporous structures with nanopores via self-assembly [ 12 , 13 , 14 , 15 ]. In many cases, well-defined surface isoporosity can be successfully obtained via various methods.…”

Section: Introductionmentioning

confidence: 99%

Amphipathic Janus Membrane with Hierarchical Multiscale Hyperporous Structure for Interfacial Catalysis

Lin

Liu

et al. 2020

Membranes

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The rational design and realization of multiscale porous structures has been a long-standing challenge in membrane science. Block copolymers (BCPs) with their self-assembly-enabled nanodomains have the potential to make structural breakthroughs. An amphipathic Janus membrane, with a hierarchical multiscale hyperporous structure constituted by polystyrene-b-poly(4-vinylpyridine) (PS4VP) and polyvinylidene fluoride (PVDF) blocks, was designed and synthesized in this work. Hydrophobic PVDF dominated one side of the membrane, and hydrophilic PS4VP, with nanopores that formed inside the macroporous channels of PVDF via a self-assembly approach, dominated the other side. Candida Rugosa Lipase (CRL), as a model biocatalyst, was immobilized in the PS4VP nanopores via injection. The immobilized lipase was exactly suspended at the interface of the organic and aqueous phases, owing to the amphipathic property of the Janus membrane. The designed structures and catalysis performances were further characterized. The immobilized lipase exhibited a three times higher specific activity than free lipase, and the relative activity still remained above 90% after 10 cycles of reusing, indicating the observable promotion and the guaranteed stability of the Janus membrane in interfacial catalysis. This work provided a general, facile and unique example for the design and synthesis of a hierarchical multiscale hyperporous membrane for interfacial catalysis.

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Fabrication of dual‐layer poly(styrene‐b‐4‐vinyl pyridine)–poly(vinylidene fluoride) membranes with tailored pore sizes under 10 nm via surface quaternization

Cited by 4 publications

References 44 publications

Amine-Containing Block Copolymers for the Bottom-Up Preparation of Functional Porous Membranes

Amine-Containing Block Copolymers for the Bottom-Up Preparation of Functional Porous Membranes

The Key Role of Modifications in Biointerfaces toward Rendering Antibacterial and Antifouling Properties in Polymeric Membranes for Water Remediation: A Critical Assessment

Amphipathic Janus Membrane with Hierarchical Multiscale Hyperporous Structure for Interfacial Catalysis

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