Molecularly Imprinted Polymer Colloids Synthesized by Miniemulsion Polymerization for Recognition and Separation of Nonylphenol
| Autor: | Elise Deniau, Volodymyr Lobaz, Maud Save, Mathilde Monperrus, Emile Decompte |
|---|---|
| Přispěvatelé: | Institut des sciences analytiques et de physico-chimie pour l'environnement et les materiaux (IPREM), Université de Pau et des Pays de l'Adour (UPPA)-Centre National de la Recherche Scientifique (CNRS), Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institute of Macromolecular Chemistry of the Czech Academy of Sciences (IMC / CAS), Czech Academy of Sciences [Prague] (CAS), Ministère de la recherche français |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
endocrine system
Polymers and Plastics 02 engineering and technology 010402 general chemistry 01 natural sciences Colloid chemistry.chemical_compound selective adsorbent organic micropollutant Aqueous solution urogenital system Process Chemistry and Technology Organic Chemistry Molecularly imprinted polymer technology industry and agriculture polymerization aqueous dispersed media 021001 nanoscience & nanotechnology poly(N-vinyl caprolactam) 0104 chemical sciences Nonylphenol Miniemulsion [CHIM.POLY]Chemical Sciences/Polymers chemistry Chemical engineering Polymerization microgel 0210 nano-technology Dispersed media |
| Zdroj: | ACS Applied Polymer Materials ACS Applied Polymer Materials, American Chemical Society, 2020, 2 (8), pp.3543-3556. ⟨10.1021/acsapm.0c00560⟩ |
| ISSN: | 2637-6105 |
| DOI: | 10.1021/acsapm.0c00560⟩ |
| Popis: | International audience; Submicronic molecularly imprinted polymer (MIP) colloids were synthesized by polymerization in aqueous dispersed media for selective separation of nonylphenol (NP) organic pollutant. A miniemulsion polymerization process based on ultrasheared monomer droplets has allowed for dispersion of the hydrophobic organic pollutant template to produce water-dispersible colloidal MIP. Structural parameters of the cross-linked polymer particles were tuned during the synthesis to achieve the best compromise between good specificity of imprinted polymer (MIP) sorbent compared to nonimprinted polymer (NIP) (i.e., imprinting factor (α)), sufficient level of adsorption capacity (Q), and selectivity of MIP toward the organic pollutant. For that purpose, the polymerization takes place in the organic monomer droplets containing nonylphenol (NP), N-vinylcaprolactam (VCL), different comonomers (vinyl acetate (VAc), vinyl benzoate (VB), or 2-ethylhexanoic acid vinyl ester (VeoVa-EH)), and various contents of divinyl adipate (DVA) cross-linker. Tuning the level of hydrophobic interactions, either by the hydrophobicity of the comonomer (VeoVa-EH > VB > VAc) or by the polarity of the hydroalcoholic mixture used for interfacial adsorption, achieved imprinting factors above unity. The binding of NP follows a monolayer Langmuir adsorption, and the present MIPs selectively recognize NP compared to phenol. Isothermal titration calorimetry (ITC) measurements corroborated both specificity (ΔHMIP > ΔHNIP) and selectivity with very low values of binding enthalpy for phenol, p-cresol, and 1-octanol compared to that of NP. |
| Databáze: | OpenAIRE |
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