Metal ions ‘sewing’ isoporous membranes with polystyrene-block-poly (acrylic acid) block copolymer

Cheng, Juan; Xu, Miao; Cheng, Panpan; Zhang, Wanna; Li, Nan; Wang, Yong; Yang, Jingying; Liang, Kaiyuan; Yu, Haizhou; Qiu, Xiaoyan

doi:10.1016/j.memsci.2019.05.011

Cited by 27 publications

(7 citation statements)

References 32 publications

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“…64,65 In 2019, the Qiu and co-workers developed a pH-responsive polystyrene-block-poly(acrylic acid) (PS-b-PAA) membrane through self-assembly of metal block copolymer complexes, in which the metal ions were adjusted to the pore size of the membrane. 66 The pore size decreased with the increase of pH. At high pH, the carboxyl group of PAA was ionized, which stretched the PAA segments, resulting in the narrowed or even closed channels.…”

Section: Internal Stimuli-responsive Ddss For Combination Therapiesmentioning

confidence: 98%

“…In 2019, the Qiu and co-workers developed a pH-responsive polystyrene- block -poly(acrylic acid) (PS- b -PAA) membrane through self-assembly of metal block copolymer complexes, in which the metal ions were adjusted to the pore size of the membrane . The pore size decreased with the increase of pH.…”

Section: Internal Stimuli-responsive Ddss For Combination Therapiesmentioning

confidence: 99%

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Recent Advances on Stimuli-Responsive Combination Therapy against Multidrug-Resistant Bacteria and Biofilm

Sikder

Chaudhuri

Mondal

et al. 2021

ACS Appl. Bio Mater.

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The widespread occurrence of infections from multidrug-resistant (MDR) bacteria is a global health problem. It has been amplified over the past few years due to the increase in adaptive traits in bacteria and lack of advanced treatment strategies. Because of the low bioavailability and limited penetration at infected sites, the existing antibiotics often fail to resist bacterial growth. Recently, developed stimuli-responsive drug delivery systems and combinatorial therapeutic systems based on nanoparticles, metal−organic frameworks, hydrogels, and organic chromophores offer the ability to improve the therapeutic efficacy of antibiotics by reducing drug resistance and other side effects. These therapeutic systems have been designed with the relevant chemical and physical properties that respond to specific triggers resulting in spatiotemporal controlled release and site-specific transportability. This review highlights the latest development of single and dual/multistimuli-responsive antibiotic delivery systems for combination therapies to treat MDR bacterial infections and biofilm eradication.

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Section: Internal Stimuli-responsive Ddss For Combination Therapiesmentioning

confidence: 98%

Section: Internal Stimuli-responsive Ddss For Combination Therapiesmentioning

confidence: 99%

Recent Advances on Stimuli-Responsive Combination Therapy against Multidrug-Resistant Bacteria and Biofilm

Sikder

Chaudhuri

Mondal

et al. 2021

ACS Appl. Bio Mater.

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“…[141,142] 2) Supporting the desired membrane morphology formation: The stability of micelles assembly and adequate intermicellar connectivity in the casting solution are essential, that should be maintained until the final step of membrane formation (i.e., immersion into the non-solvent bath). To this end, different additives are used including; metal salts by forming complexes between the cation and the micelles-corona (coordination), [75,76,143] and small organic molecules as well as homopolymers through the hydrogen bond formation. [106,144,145] It leads to the formation of much more reproducible membrane structures in large-scale, offering the long-range order in addition to a better-controlled morphology.…”

Section: Additivesmentioning

confidence: 99%

“…Sometimes, high hydrophilicity of a polymer-block (e.g., PAA) makes it difficult or even impossible to precipitate the BCP in highly polar non-solvents like water, which is frequently used in the SNIPS process. Experimentally, approaches like blending or using additives in the casting solution, [143,147] and utilizing a low-temperature non-solvent bath, [14,50,51,71] have been reported to keep stabilizing the ordered micellar structure of solution-cast films during phase inversion step.…”

Section: Influence Of the Non-solvent And Immersion Precipitation Con...mentioning

confidence: 99%

How does Micro‐ and Macro‐Phase Separation of Block Copolymers Affect the Formation of Integral Asymmetric Isoporous Membranes? A Review on Effective Factors

Foroutani

Ghasemi

2022

Macro Materials & Eng

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Self-standing isoporous membranes based on amphiphilic block copolymers (BCPs) are an outstanding candidate for efficient separation processes. Such fascinating membranes have been generated through combining the BCP self-assembly (micro-phase separation) together with the classical non-solvent induced phase separation (macro-phase separation), known as SNIPS process. However, the controllability, reproducibility, and cost-effectiveness of the process along with the mechanism for pores generation are still challenging in the SNIPS strategy, especially when new BCP or conditions are utilized. It is mainly due to the narrow efficacy window of numerous variables influencing the desired structure formation. In this review, first, an overview of the one-step readily scalable SNIPS technique and the stepwise explanation of the process are given. Then the formation mechanism of SNIPS membranes, according to the related hypotheses and assumptions proposed on the basis of experimental evidence so far, is presented and discussed. As the main focus , governing factors in the SNIPS process which affect the preparation and structural characteristics of final membrane structures are entirely reviewed and interpreted. This review will help to have a better understanding of the connection between determinant factors and final membrane structure, which facilitates successful preparation of BCP membranes via SNIPS.

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“…An asymmetric diblock copolymer is the most common choice for the fabrication of a SNIPS membrane. Successful fabrication of the SNIPS membranes have been reported using polystyrene‐ block ‐poly(4‐vinylpyridine) (PS‐ b ‐P4VP), [ 13 ] polystyrene‐ block ‐poly(2‐vinylpyridine) (PS‐ b ‐P2VP), [ 28 ] poly( tert ‐butylstyrene)‐ block ‐poly(4‐vinylpyridine) (PtBS‐ b ‐P4VP), [ 29 ] poly(4‐trimethylsilylstyrene)‐ block ‐poly(4‐vinylpyridine) (PtTMS‐ b ‐P4VP), [ 29 ] poly(4‐methylstyrene)‐ block ‐poly(4‐vinylpyridine) (P4MS‐ b ‐P4VP), [ 30 ] poly( α ‐methylstyrene)‐ block ‐poly(4‐vinylpyridine) (P α MS‐ b ‐P4VP), [ 30 ] polystyrene‐ block ‐poly(ethylene oxide) (PS‐ b ‐PEO), [ 31 ] polystyrene‐ block ‐poly(2‐hydroxyethyl methacrylate) (PS‐ b ‐PHEMA), [ 32 ] polystyrene‐ block ‐poly(glyceryl methacrylate) (PS‐ b ‐PGMA), [ 33 ] polystyrene‐ block ‐poly( N ‐isopropylacrylamide) (PS‐ b ‐PNIPAM), [ 34 ] polystyrene‐ block ‐poly(acrylic acid) (PS‐ b ‐PAA) [ 35 ] etc. ( Figure ).…”

Section: Integral Asymmetric Isoporous Membranes Via Snipsmentioning

confidence: 99%

Selective Swelling and Functionalization of Integral Asymmetric Isoporous Block Copolymer Membranes

Rahman

2021

Macromol. Rapid Commun.

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SNIPS stands for a membrane fabrication technique that combines the evaporation induced self‐assembly of the block copolymers and the classical nonsolvent induced phase separation. It is a one‐step readily scalable technique to fabricate integral asymmetric isoporous membranes. The prominent developments in the last decade have carved out a niche for SNIPS as a potential technique to fabricate next generation isoporous membranes. In the last decade, a rich polymer library and variety of membrane postmodification routes have been successfully implemented to fabricate SNIPS membranes having the desired pore functionality. Some of these membranes form soft nanochannels in hydrated state due to swelling of the pore wall, i.e., the pore forming block of the block copolymer. These membranes having soft nanochannels have demonstrated the potential to perform several challenging separation tasks in ultrafiltration and nanofiltration. This paper highlights the currently accessible pore functionality, the strategies to tune the swelling of the soft nanochannels, the potential applications, and future perspectives of these membranes.

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Metal ions ‘sewing’ isoporous membranes with polystyrene-block-poly (acrylic acid) block copolymer

Cited by 27 publications

References 32 publications

Recent Advances on Stimuli-Responsive Combination Therapy against Multidrug-Resistant Bacteria and Biofilm

Recent Advances on Stimuli-Responsive Combination Therapy against Multidrug-Resistant Bacteria and Biofilm

How does Micro‐ and Macro‐Phase Separation of Block Copolymers Affect the Formation of Integral Asymmetric Isoporous Membranes? A Review on Effective Factors

Selective Swelling and Functionalization of Integral Asymmetric Isoporous Block Copolymer Membranes

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