Responsive filtration membranes by polymer self-assembly

TECHNOLOGY ◽  
2016 ◽  
Vol 04 (04) ◽  
pp. 217-228 ◽  
Author(s):  
Papatya Kaner ◽  
Prity Bengani-Lutz ◽  
Ilin Sadeghi ◽  
Ayse Asatekin
Keyword(s):  
Self Assembly ◽  
Performance Parameters ◽  
Stimuli Responsive ◽  
Membrane Filters ◽  
Filtration Membranes ◽  
Chemical Manufacturing ◽  
Responsive Membranes ◽  
Responsive Behavior ◽  
Scalable Methods ◽  
External Stimuli

Membrane technologies are essential for water treatment, bioprocessing and chemical manufacturing. Stimuli-responsive membranes respond to changes in feed conditions (e.g., temperature, pH) or external stimuli (e.g., magnetic field, light) with a change in performance parameters (permeability, selectivity). This enables new functionalities such as tunable performance, self-cleaning and smart-valve behavior. Polymer self-assembly is a crucial tool for manufacturing such membranes using scalable methods, enabling easier commercialization. This review surveys approaches to impart stimuli responsive behavior to membrane filters using polymer self-assembly.

scholarly journals Molecularly engineered switchable photo-responsive membrane in gas separation for environmental protection

2019 ◽  
Vol 25 (4) ◽  
pp. 447-461 ◽  
Author(s):  
Aishah Rosli ◽  
Siew Chun Low
Keyword(s):  
Environmental Protection ◽  
Gas Separation ◽  
Energy Costs ◽  
Stimuli Responsive ◽  
Responsive Materials ◽  
Separation Systems ◽  
Non Invasive ◽  
Responsive Membranes ◽  
External Stimuli

In recent years, stimuli-responsive materials have garnered interest due to their ability to change properties when exposed to external stimuli, making it useful for various applications including gas separation. Light is a very attractive trigger for responsive materials due to its speedy and non-invasive nature as well as the potential to reduce energy costs significantly. Even though light is deemed as an appealing stimulus for the development of stimuli-responsive materials, this avenue has yet to be extensively researched, as evidenced by the fewer works done on the photo-responsive membranes. Of these, there are even less research done on photo-responsive materials for the purpose of gas separation, thus, we have collected the examples that answer both these criteria in this review. This review covers the utilisation of photo-responsive materials specifically for gas separation purposes. Photo-chromic units, their integration into gas separation systems, mechanism and research that have been done on the topic so far are discussed.

Stimuli-responsive anisotropic actuation of melem-formaldehyde polymer

2020 ◽  
Vol 7 (1) ◽  
pp. 149-156 ◽  
Author(s):  
Yang Wang ◽  
Niannian Wu ◽  
Congyan Liu ◽  
Mohamed K. Albolkany ◽  
Min Wang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Assembly Process ◽  
Stimuli Responsive ◽  
External Stimuli

The intrinsically anisotropic melem-formaldehyde polymer that is constructed from a self-assembly process enables reversible anisotropic actuation under external stimuli.

Radiation-Grafting of Cotton-g-DMAEMA for Biomedical Applications

2012 ◽  
Vol 1483 ◽  
Author(s):  
Marco A. Luna-Straffon ◽  
Gerardo Cedillo ◽  
Emilio Bucio
Keyword(s):  
Biomedical Application ◽  
Direct Method ◽  
Monomer Concentration ◽  
Absorbed Dose ◽  
Stimuli Responsive ◽  
Responsive Membranes ◽  
Hrmas Nmr ◽  
Γ Rays ◽  
Responsive Behavior ◽  
Tga And Dsc

ABSTRACTThis work covers the design of stimuli-responsive membranes and their ever-expanding range of use. Stimuli-responsive membranes that change their physicochemical properties in response to changes in their environment were synthesized for biomedical application. Responsive cotton-g-[2-(dimethylamino) ethyl methacrylate] membranes were obtained using γ-rays by mutual irradiation (direct method). The effect of absorbed dose, dose rate, and monomer concentration on the grafting yield was determined. The grafted samples were verified by the FTIR-ATR, 1H and 13C HRMAS NMR and 13C CPMAS NMR spectroscopies; thermal properties were analyzed by TGA and DSC and the stimuli-responsive behavior was studied by DSC.

scholarly journals Self-assembly of photoresponsive azo-containing phospholipids with a polar group as the tail

RSC Advances ◽  
2020 ◽  
Vol 10 (54) ◽  
pp. 32984-32991
Author(s):  
Su Ma ◽  
Seiji Kurihara ◽  
Yasuhiro Tomimori ◽  
Sunnam Kim ◽  
Eunsang Kwon ◽  
...  
Keyword(s):  
Visible Light ◽  
Self Assembly ◽  
Polar Group ◽  
Stimuli Responsive ◽  
Light Stimuli ◽  
Responsive Behavior

A mixture of a nitro- and methoxy-substituted azo-containing phospholipids without long alkyl tails formed vesicles showing visible light stimuli-responsive behavior. Release of encapsulated calcein from the vesicles was triggered by visible light.

Modulating the Self-Assembly of Calix[4]azacrowns to Design Materials with Improved Emission and Stimuli-Responsive Behavior

2014 ◽  
Vol 118 (24) ◽  
pp. 13118-13125 ◽  
Author(s):  
Issam Oueslati ◽  
José A. Paixão ◽  
Vitor H. Rodrigues ◽  
Aleksander Shkurenko ◽  
Barbara Leśniewska ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Stimuli Responsive ◽  
Responsive Behavior ◽  
Design Materials

scholarly journals Latest Advances on the Synthesis of Linear ABC-Type Triblock Terpolymers and Star-Shaped Polymers by RAFT Polymerization

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1698
Author(s):  
Athanasios Skandalis ◽  
Theodore Sentoukas ◽  
Despoina Giaouzi ◽  
Martha Kafetzi ◽  
Stergios Pispas
Keyword(s):  
Self Assembly ◽  
Raft Polymerization ◽  
Degree Of Polymerization ◽  
Stimuli Responsive ◽  
Reaction Conditions ◽  
Functional Monomers ◽  
Precise Control ◽  
Versatile Technique ◽  
External Stimuli ◽  
Triblock Terpolymers

This review article aims to cover the most recent advances regarding the synthesis of linear ABC-type triblock terpolymers and star-shaped polymers by RAFT polymerization, as well as their self-assembly properties in aqueous solutions. RAFT polymerization has received extensive attention, as it is a versatile technique, compatible with a great variety of functional monomers and reaction conditions, while providing exceptional and precise control over the final structure, with well-defined side-groups and post-polymerization engineering potential. Linear triblock terpolymers synthesis can lead to very interesting novel ideas, since there are countless combinations of stimuli/non-stimuli and hydrophilic/hydrophobic monomers that someone can use. One of their most interesting features is their ubiquitous ability to self-assemble in different nanostructures depending on their degree of polymerization (DP), block composition, solubilization protocol, internal and external stimuli. On the other hand, star-shaped polymers exhibit a more stable nanostructure, with a distinct crosslinked core and arm blocks that can also incorporate stimuli-responsive blocks for “smart” applications.

Synthesis, thermoresponsivity and multi-tunable hierarchical self-assembly of multi-responsive (AB)mC miktobrush-coil terpolymers

2020 ◽  
Vol 11 (17) ◽  
pp. 3003-3017 ◽  
Author(s):  
Xiaomin Zhu ◽  
Jian Zhang ◽  
Cheng Miao ◽  
Siyu Li ◽  
Youliang Zhao
Keyword(s):  
Physical Properties ◽  
Self Assembly ◽  
Stimuli Responsive ◽  
External Stimuli

Stimuli-responsive miktobrush-coil terpolymers can exhibit unique physical properties and hierarchical self-assembly behaviors dependent on composition, concentration and external stimuli.

Self-assembly and multi-stimuli responsive behavior of PAA-b-PAzoMA-b-PNIPAM triblock copolymers

2017 ◽  
Vol 8 (48) ◽  
pp. 7529-7536 ◽  
Author(s):  
Fei Gao ◽  
Yaohui Xing ◽  
Yuan Yao ◽  
Liuying Sun ◽  
Yao Sun ◽  
...  
Keyword(s):  
Self Assembly ◽  
Triblock Copolymer ◽  
Triblock Copolymers ◽  
Temperature Sensitive ◽  
Stimuli Responsive ◽  
Responsive Behavior ◽  
Spherical Micelles

A PAA-b-PAzoMA-b-PNIPAM triblock copolymer containing pH, photo and temperature sensitive groups could self-assemble into spherical micelles or vesicles with multi-stimuli responsiveness.

scholarly journals Self-assembly of Janus Au:Fe3O4 branched nanoparticles. From organized clusters to stimuli-responsive nanogel suprastructures

2020 ◽  
Vol 2 (6) ◽  
pp. 2525-2530
Author(s):  
Javier Reguera ◽  
Tatjana Flora ◽  
Naomi Winckelmans ◽  
José C. Rodríguez-Cabello ◽  
Sara Bals
Keyword(s):  
Self Assembly ◽  
Stimuli Responsive ◽  
Small Clusters ◽  
External Stimuli

Novel suprastructures, from small clusters to micelle-like structures, are obtained by self-assembly of Janus Au:Fe3O4 nanostars under external stimuli.

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