Abstract
A new strategy was developed to build a CO2-philic/hydrophilic surfactant by combining the common free radical polymerization and the grafting modification technology, and a brush polymer was synthesized with poly(vinyl acetate)(PVAc) based copolymer as the CO2-philic group (as the main chain) and the methoxy poly(ethylene glycol) (mPEG) as the hydrophilic part (as the branched chain) (PVAc-g-mPEG). The CO2-philic ability can be controlled by adjusting the chain length of the CO2-philic fragment. The results indicate that PVAc-g-mPEG has excellent surfactant activity, and can emulsify the CO2/H2O system to obtain the CO2-in-water (C/W) high interval phase emulsion (HIPE 80%, v/v), which can remain stable for more than 20 h. If using the monomers/crosslinking agent solution instead of water, the highly porous monolithic materials will be obtained after the continuous phase is polymerized. In this paper, polyacrylamide (PAM) and poly(acrylamide/diethyl aminoethyl methacrylate) (PADM)-based porous monolithic materials were prepared. These materials were used to remove bovine serum albumin (BSA, as the model matter) from the solution, and the results indicated that PAM-based porous monolithic materials had almost no enrichment capacity for protein, while PADM-based porous monolithic materials can adsorb BSA up to 129.3 mg/g.
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This work is financially supported by the Scientific Research Projects of Ningxia Colleges and Universities (NGY2020061), the Ningxia Natural Science Foundation (2023AAC03282), and the National Natural Science Foundation of China (21564001).
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Zhang, S., Bian, Y. & Yang, C. Synthesis of CO2-philic/hydrophilic surfactant with brush structure and its application in preparing monolithic materials. J Polym Res 31, 126 (2024). https://doi.org/10.1007/s10965-024-03970-0
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DOI: https://doi.org/10.1007/s10965-024-03970-0