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    Sustainable Poly(Ionic Liquids) for CO2 Capture Based on Deep Eutectic Monomers

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    Type
    Article
    Authors
    Isik, Mehmet
    Zulfiqar, Sonia
    Edhaim, Fatimah A. cc
    Ruiperez, Fernando
    Rothenberger, Alexander
    Mecerreyes, David cc
    KAUST Department
    Chemical Science Program
    Physical Science and Engineering (PSE) Division
    Date
    2016-10-18
    Online Publication Date
    2016-10-18
    Print Publication Date
    2016-12-05
    Permanent link to this record
    http://hdl.handle.net/10754/622477
    
    Metadata
    Show full item record
    Abstract
    The design of high performance solid sorbent materials for CO2 capture is a technology which has been employed to mitigate global warming. However, the covalent incorporation of functionalities into polymeric supports usually involves multistep energy-intensive chemical processes. This fact makes the net CO2 balance of the materials negative even though they possess good properties as CO2 sorbents. Here we show a new family of polymers which are based on amines, amidoximes, and natural carboxylic acids and can be obtained using sustainable low energy processes. Thus, deep eutectic monomers based on natural carboxylic acids, amidoximes, and amines have been prepared by just mixing with cholinium type methacrylic ammonium monomer. The formation of deep eutectic monomers was confirmed by differential scanning calorimetry measurements. In all cases, the monomers displayed glass transition temperatures well below room temperature. Computational studies revealed that the formation of eutectic complexes lengthens the distance between the cation and the anion causing charge delocalization. The liquid nature of the resulting deep eutectic monomers (DEMs) made it possible to conduct a fast photopolymerization process to obtain the corresponding poly(ionic liquids). Materials were characterized by means of nuclear magnetic resonance, differential scanning calorimetry, thermogravimetric analysis, and X-ray diffraction to evaluate the properties of the polymers. The polymers were then used as solid sorbents for CO2 capture. It has been shown that the polymers prepared with citric acid displayed better performance both experimentally and computationally. The current endeavor showed that sustainable poly(ionic liquids) based on deep eutectic monomers can be easily prepared to produce low-energy-cost alternatives to the materials currently being researched for CO2 capture. © 2016 American Chemical Society.
    Citation
    Isik M, Zulfiqar S, Edhaim F, Ruiperez F, Rothenberger A, et al. (2016) Sustainable Poly(Ionic Liquids) for CO2 Capture Based on Deep Eutectic Monomers. ACS Sustainable Chemistry & Engineering 4: 7200–7208. Available: http://dx.doi.org/10.1021/acssuschemeng.6b02137.
    Sponsors
    Financial contribution of European Union through Renais- sance-ITN 289347 is greatly acknowledged. Technical and human support provided by IZO-SGI (UPV/EHU, MICINN, GV/EJ, ERDF and ESF) is gratefully acknowledged for assistance and generous allocation of computational resources.
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Sustainable Chemistry & Engineering
    DOI
    10.1021/acssuschemeng.6b02137
    Additional Links
    http://pubs.acs.org/doi/abs/10.1021/acssuschemeng.6b02137
    ae974a485f413a2113503eed53cd6c53
    10.1021/acssuschemeng.6b02137
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division; Chemical Science Program

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