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Molecularly imprinted polymer colloids synthesized by miniemulsion polymerization for recognition and separation of nonylphenol
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SYSNO ASEP 0531879 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Molecularly imprinted polymer colloids synthesized by miniemulsion polymerization for recognition and separation of nonylphenol Author(s) Decompte, E. (FR)
Lobaz, Volodymyr (UMCH-V) RID, ORCID
Monperrus, M. (FR)
Deniau, E. (FR)
Save, M. (FR)Source Title ACS Applied Polymer Materials. - : American Chemical Society - ISSN 2637-6105
Roč. 2, č. 8 (2020), s. 3543-3556Number of pages 14 s. Language eng - English Country US - United States Keywords polymerization aqueous dispersed media ; microgel ; selective adsorbent Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects 7AMB17FR032 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000562954200056 DOI 10.1021/acsapm.0c00560 Annotation 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. Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2021 Electronic address https://pubs.acs.org/doi/10.1021/acsapm.0c00560
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