Stimuli-Responsive Membranes for Separations

Ghosh, Raja

doi:10.1007/978-3-319-95990-0_8

Cited by 3 publications

(1 citation statement)

References 69 publications

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“…In the field of gating membranes, several extended review articles or entire book chapters dedicated to this subject exist, see for instance 24 and. 97 In the present short contribution, we have highlighted about 35 very recent articles, as well as some precursor work, reporting the formation, properties, and applications of smart membranes based on either ''all-smart'' or functionalized porous membranes. Because of their widespread use, we have focused the review on the temperature effect and on the use of microgels as functional component of the membranes.…”

Section: Discussionmentioning

confidence: 99%

A review of stimuli-responsive polymer-based gating membranes

Uredat,

Gujare,

Runge

et al. 2024

Phys. Chem. Chem. Phys.

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Section: Discussionmentioning

confidence: 99%

A review of stimuli-responsive polymer-based gating membranes

Uredat,

Gujare,

Runge

et al. 2024

Phys. Chem. Chem. Phys.

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Reversible Hydrogels with Switchable Diffusive Permeability

Nicolella

Lauxen

Ahmadi

et al. 2021

Macro Chemistry & Physics

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Hydrogels are polymer networks swollen in water that are characterized by soft mechanics and high permeability. This makes them good candidates for separation and membrane technologies. The diffusion is controlled by the mesh size of the network, and this can be made tunable through the introduction of thermoresponsive polymers. However, this is still a developing field. To contribute to this development, a dual dynamic network is formed composed of four‐arm polyethylene glycol precursors in which each arm is functionalized with both a terpyridine moiety capable of forming reversible metal–ligand complexes along with branches of poly(N‐isopropylacrylamide) (pNIPAAm), which can be switched between expanded and collapsed states and therewith offers a path for switching the microscopic gel‐network mesh size, along with the macroscopic gel elasticity. The dually sensitive hydrogel has the capability of doubling its elastic modulus when going above the lower critical solution temperature (LCST) of pNIPAAm. In addition, the diffusive permeability of the hydrogel is switched upon change of temperature, whereby diffusants are trapped above the LCST of pNIPAAm. Moreover, it is possible to disassemble and reform the gel upon change of pH. With that, the hydrogel has potential application as a switchable and reversible membrane.

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A review on nature-inspired gating membranes: From concept to design and applications

Bazyar

Moultos

Lammertink

2022

The Journal of Chemical Physics

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Nature has been a constant inspiration in human civilization to achieve technological developments. Recently, the study on nature-inspired materials has expanded to micro- and nanoscale, facilitating new breakthroughs on the design of materials with unique properties. Various types of superhydrophobic surfaces inspired by lotus/rice leaf are examples of nature-inspired surfaces with special wettability. A new class of functional surfaces which are inspired by pitcher plant are the slippery liquid-infused porous surfaces (SLIPS). This review summarizes the properties, design criteria, fabrication strategies, and working mechanisms of both surfaces with specific focus on SLIPS. The application of SLIPS in the field of membrane technology (slippery liquid-infused membranes (SLIMs)) are also reviewed. The design criteria, fabrication methods and applications of SLIMs are discussed in detail. These membranes are also known as liquid gating membranes due to the gating functionality of the capillary-stabilized liquid in the membrane pores leading to a smart gating mechanism. Similarly to the gating ion channels in biological systems, the pores open and close in response to the ambient stimuli, e.g., pressure, temperature, and ions. Different types of stimuli-responsive smart gating membranes are introduced here, and their properties and applications are reviewed in detail. Finally, challenges and perspectives on both SLIPS as well as smart gating membranes are discussed. This review provides a thorough knowledge and practical orientation on nature-inspired functional surfaces and membranes to pave the way for future research and further developments in this emerging field.

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Stimuli-Responsive Membranes for Separations

Cited by 3 publications

References 69 publications

A review of stimuli-responsive polymer-based gating membranes

A review of stimuli-responsive polymer-based gating membranes

Reversible Hydrogels with Switchable Diffusive Permeability

A review on nature-inspired gating membranes: From concept to design and applications

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