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Published in: Journal of Polymer Research 7/2023

01-07-2023 | Original Paper

Dual-responsive polymers synthesized via RAFT polymerization for controlled demulsification and desorption

Authors: Hao Ma, Alexandre Cameron

Published in: Journal of Polymer Research | Issue 7/2023

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Abstract

Intelligent polymers responsive to the environment have aroused widespread interest in many applications of materials and interfaces. However, sensitive control of the oil-water interface remains a major challenge, using reversible self-assembly of macromolecules induced by external stimuli. Here, we synthesized a new amphiphilic triblock copolymer responsive to pH and UV light via reversible addition–fragmentation chain transfer (RAFT) aqueous polymerization. Poly(methacrylic acid) (PMAA) acts as the hydrophilic block; poly(N, N-dimethyl aminoethyl methacrylate) (PDMAEMA) and poly(methacrylamide azobenzene) (PMAAAB) are the hydrophobic blocks with responsiveness. The as-synthesized polymer was measured regarding UV–vis transmittance and contact angle to verify the tunable amphiphilicity and wettability by the double stimulation. The newly developed dual-responsive polymer was applied for oil/water separation and controlled dye release, where methylene red (MR) was chosen as the representative adsorbate. With the synergic stimulation of pH and UV light, efficient separation for oil-in-water emulsions (separation efficiency: 66.8% in 15 min) and excellent desorption for adsorbed dyes (desorption efficiency: 93.8% in 15 min) are achieved.

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Literature
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go back to reference Ramezanpour M, Shirin-Abadi AR (2021) Emulsion polymerization using three types of RAFT prepared well-defined polymeric Stabilizers based on 2-Dimethylaminoethyl methacrylate (DMAEMA) under CO2 atmosphere: a comparative study. J Polym Res 28(7). https://doi.org/10.1007/s10965-021-02619-6 Ramezanpour M, Shirin-Abadi AR (2021) Emulsion polymerization using three types of RAFT prepared well-defined polymeric Stabilizers based on 2-Dimethylaminoethyl methacrylate (DMAEMA) under CO2 atmosphere: a comparative study. J Polym Res 28(7). https://​doi.​org/​10.​1007/​s10965-021-02619-6
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Metadata
Title
Dual-responsive polymers synthesized via RAFT polymerization for controlled demulsification and desorption
Authors
Hao Ma
Alexandre Cameron
Publication date
01-07-2023
Publisher
Springer Netherlands
Published in
Journal of Polymer Research / Issue 7/2023
Print ISSN: 1022-9760
Electronic ISSN: 1572-8935
DOI
https://doi.org/10.1007/s10965-023-03642-5

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