{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,25]],"date-time":"2026-02-25T10:14:19Z","timestamp":1772014459479,"version":"3.50.1"},"reference-count":34,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2020,4,2]],"date-time":"2020-04-02T00:00:00Z","timestamp":1585785600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>This study reports the synthesis of polyurethane\u2013lignin copolymer blended with carbon multilayer nanotubes to be used in all-solid-state potentiometric chemical sensors. Known applicability of lignin-based polyurethanes doped with carbon nanotubes for chemical sensing was extended to eucalyptus LignoBoost\u00ae kraft lignin containing increased amounts of polyphenolic groups from concomitant tannins that were expected to impart specificity and sensitivity to the sensing material. Synthesized polymers were characterized using FT-MIR spectroscopy, electrical impedance spectroscopy, scanning electron microscopy, thermogravimetric analysis, and differential scanning calorimetry and are used for manufacturing of all solid-state potentiometric sensors. Potentiometric sensor with LignoBoost\u00ae kraft lignin-based polyurethane membrane displayed theoretical response and high selectivity to Cu (II) ions, as well as long-term stability.<\/jats:p>","DOI":"10.3390\/ma13071637","type":"journal-article","created":{"date-parts":[[2020,4,2]],"date-time":"2020-04-02T11:57:14Z","timestamp":1585828634000},"page":"1637","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":16,"title":["Nanocomposite Polymeric Materials Based on Eucalyptus Lignoboost\u00ae Kraft Lignin for Liquid Sensing Applications"],"prefix":"10.3390","volume":"13","author":[{"given":"S\u00f3nia S. Le\u00e7a","family":"Gon\u00e7alves","sequence":"first","affiliation":[{"name":"CICECO and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7963-3892","authenticated-orcid":false,"given":"Alisa","family":"Rudnitskaya","sequence":"additional","affiliation":[{"name":"CESAM and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1970-0547","authenticated-orcid":false,"given":"Ant\u00f3nio J.M.","family":"Sales","sequence":"additional","affiliation":[{"name":"I3N and Department of Physics, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7666-4741","authenticated-orcid":false,"given":"Lu\u00eds M. Cadillon","family":"Costa","sequence":"additional","affiliation":[{"name":"I3N and Department of Physics, University of Aveiro, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6304-5105","authenticated-orcid":false,"given":"Dmitry V.","family":"Evtuguin","sequence":"additional","affiliation":[{"name":"CICECO and Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2020,4,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"7","DOI":"10.1002\/elan.200503384","article-title":"Conducting Polymer-Based Solid-State Ion-Selective Electrodes","volume":"18","author":"Bobacka","year":"2006","journal-title":"Electroanalysis"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"746","DOI":"10.1021\/cr068112h","article-title":"Composites of Intrinsically Conducting Polymers as Sensing Nanomaterials","volume":"108","author":"Hatchett","year":"2008","journal-title":"Chem. 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