Bio-inspired fabrication of asymmetric wettability Janus porous membrane for secure F-oil infused F-free-membrane filtration

Wang, Zhecun; Yao, Jin; Li, Ziqin; Yang, Kuan; Guo, Jing; Zhang, Suobo; Sherazi, Tauqir A.; Li, Shenghai

doi:10.1016/j.memsci.2018.08.071

Cited by 16 publications

(6 citation statements)

References 49 publications

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“…On the other hand, asymmetric modification is the direct modification of one or two surfaces of CNM membranes with asymmetric properties. , A floating asymmetric modification process was reported to prepare an ultrathin Janus CNM membrane with wet contrast, as shown in Figure a, while a masking and vapor oxidation process was developed for a Janus-like CNM membrane with aldehyde and carboxyl functionalities, as illustrated in Figure b. It is worth noting that dry CNM membranes are recommended for use during asymmetric vapor oxidation, since ozone oxidation is largely destructive to cellulose crystals, especially in the wet state.…”

Section: Janus Cnm Membranes and Their Applicationmentioning

confidence: 99%

Naturally Derived Janus Cellulose Nanomaterials: Anisotropic Cellulose Nanomaterial Building Blocks and Their Assembly into Asymmetric Structures

et al. 2022

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Naturally derived cellulose nanomaterials (CNMs) with desirable physicochemical properties have drawn tremendous attention for their versatile applications in a broad range of fields. More recently, Janus amphiphilic cellulose nanomaterial particles with asymmetric structures (i.e., reducing and nonreducing ends and crystalline and amorphous domains) have been in the spotlight, offering a rich and sophisticated toolbox for Janus nanomaterials. With careful surface and interfacial engineering, Janus CNM particles have demonstrated great potential as surface modifiers, emulsifiers, stabilizers, compatibilizers, and dispersants in emulsions, nanocomposites, and suspensions. Naturally derived Janus CNM particles offer a fascinating opportunity for scaling up the production of self-standing Janus CNM membranes. Nevertheless, most Janus CNM membranes to date are constructed by asymmetric fabrication or asymmetric modification without considering the Janus traits of CNM particles. More future research should focus on the self-assembly of Janus CNM particles into bulk self-standing Janus CNM membranes to enable more straightforward and sustainable approaches for Janus membranes. This review explores the fabrication, structure–property relationship, and Janus configuration mechanisms of Janus CNM particles and membranes. Janus CNM membranes are highlighted for their versatile applications in liquid, thermal, and light management. This review also highlights the significant advances and future perspectives in the construction and application of sustainable Janus CNM particles and membranes.

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Section: Janus Cnm Membranes and Their Applicationmentioning

confidence: 99%

Naturally Derived Janus Cellulose Nanomaterials: Anisotropic Cellulose Nanomaterial Building Blocks and Their Assembly into Asymmetric Structures

et al. 2022

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“…To address these limitations, researchers have prepared many intelligent moisture fabrics that could drive sweat transport unidirectionally through surface energy or anisotropic structure gradients. [97][98][99][100][101] Wang's group prepared a hydrophobic/superhydrophilic polyester/nitrocellulose textile that can achieve directional liquid transport and maintain human body temperature (Fig. 4b).…”

Section: Unidirectional Penetrationmentioning

confidence: 99%

Section: Application Of a Monolayered Porous Membranementioning

confidence: 99%

Gradient monolayered porous membrane for liquid manipulation: from fabrication to application

Zhang

et al. 2022

Nanoscale Adv.

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“…[ 6 ] Single‐layer Janus membranes are favored due to the structural integrity and unicity. So far a large number of methods have been developed to fabricate the single‐layer Janus membrane, including single‐faced photodegradation, [ 7 ] single‐faced photo‐crosslinking, [ 3 ] floated deposition, [ 8 ] vapor treatment, [ 1a ] etc. However, limited by the membrane structure, the positive critical breakthrough pressure and reverse critical breakthrough pressure of single‐layer Janus membrane with straight pore are mutually restricted.…”

Section: Introductionmentioning

confidence: 99%

Liquid‐Assisted Single‐Layer Janus Membrane for Efficient Unidirectional Liquid Penetration

et al. 2021

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Unidirectional liquid penetration plays an important role in many fields, such as microfluidic devices, biological medical, liquid printing, and oil/water separation. Although there are some progresses in the liquid unidirectional penetration using a variety of Janus membranes with anisotropic wettability, it still remains a great difficulty for single‐layer Janus membranes with straight pore to balance spontaneous liquid penetration in positive direction and superior liquid resistance in the reverse direction. Herein, a liquid‐assisted strategy for single‐layer Janus membrane is developed, which can efficiently decrease the critical breakthrough pressure from superhydrophobic side to hydrophilic side and show little influence on that in the reverse direction. Consequently, unidirectional water penetration with high hydraulic pressure difference can be achieved. The Laplace pressure change along the thickness of the single‐layer Janus membranes is further discussed, and the mechanism by which the auxiliary liquid decreases the critical breakthrough pressure is revealed. Furthermore, this Janus membrane with unidirectional water penetration “diode” performance can be used to prevent liquid backflow in intravenous transfusion. It is believed that this work can open an avenue for people to design single‐layer Janus membrane with high pressure difference and find wide applications in unidirectional liquid transport.

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Bio-inspired fabrication of asymmetric wettability Janus porous membrane for secure F-oil infused F-free-membrane filtration

Cited by 16 publications

References 49 publications

Naturally Derived Janus Cellulose Nanomaterials: Anisotropic Cellulose Nanomaterial Building Blocks and Their Assembly into Asymmetric Structures

Naturally Derived Janus Cellulose Nanomaterials: Anisotropic Cellulose Nanomaterial Building Blocks and Their Assembly into Asymmetric Structures

Gradient monolayered porous membrane for liquid manipulation: from fabrication to application

Liquid‐Assisted Single‐Layer Janus Membrane for Efficient Unidirectional Liquid Penetration

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