{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,12,13]],"date-time":"2025-12-13T07:18:55Z","timestamp":1765610335602,"version":"build-2065373602"},"reference-count":58,"publisher":"MDPI AG","issue":"6","license":[{"start":{"date-parts":[[2023,3,21]],"date-time":"2023-03-21T00:00:00Z","timestamp":1679356800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"European Regional Development Fund (ERDF)","award":["21874"],"award-info":[{"award-number":["21874"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sustainability"],"abstract":"<jats:p>Competition issues with food industry have recently boosted the exploration of alternative solutions capable of replacing starch in papermaking to a certain extent. Covalent grafting of quaternary ammonium groups onto LignoBoost\u00ae\u00a0Eucalyptus kraft lignin has recently shown promise in this regard as the cationic products feature excellent water solubility across the entire pH scale. Considering these suitable properties, cationic kraft lignin was applied and evaluated, for the first time, in the perspective of partial substitution of cationic starch in papermaking, using bleached Eucalyptus kraft pulp. Based on an assessment of key paper properties, such as mechanical (tensile, bursting, and tearing indexes), structural (roughness, capillarity rise, air resistance, internal strength, and water contact angle), and optical ones (brightness, opacity, and relative color change), it is safe to conclude that the partial replacement of conventional cationic starch by cationic lignin does not compromise these features. The results also show that properties can be fine-tuned by varying the degree of lignin derivatization, providing paper-specific solutions for replacing starch by lignin potentially available at large-scale at the pulp and paper industry, closing the loop within the circular economy concept.<\/jats:p>","DOI":"10.3390\/su15065493","type":"journal-article","created":{"date-parts":[[2023,3,21]],"date-time":"2023-03-21T03:15:03Z","timestamp":1679368503000},"page":"5493","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Partial Replacement of Cationic Starch by Cationic Hardwood Kraft Lignin Does Not Compromise Key Paper Properties"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5709-5472","authenticated-orcid":false,"given":"Patr\u00edcia I. F.","family":"Pinto","sequence":"first","affiliation":[{"name":"RAIZ\u2014Forest and Paper Research Institute, Quinta de S. Francisco, Apartado 15, 3801-501 Aveiro, Portugal"},{"name":"CICECO\u2014Aveiro Institute of Materials and Department of Chemistry, University of Aveiro, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1561-4406","authenticated-orcid":false,"given":"Paula C. R.","family":"Pinto","sequence":"additional","affiliation":[{"name":"RAIZ\u2014Forest and Paper Research Institute, Quinta de S. Francisco, Apartado 15, 3801-501 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6304-5105","authenticated-orcid":false,"given":"Dmitry V.","family":"Evtuguin","sequence":"additional","affiliation":[{"name":"CICECO\u2014Aveiro Institute of Materials and Department of Chemistry, University of Aveiro, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8244-8153","authenticated-orcid":false,"given":"Falk","family":"Liebner","sequence":"additional","affiliation":[{"name":"CICECO\u2014Aveiro Institute of Materials and Department of Chemistry, University of Aveiro, Campus Universit\u00e1rio de Santiago, 3810-193 Aveiro, Portugal"},{"name":"Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences, Vienna, University and Research Center Tulln, Konrad Lorenz Strasse 24, A-3430 Tulln, Austria"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,21]]},"reference":[{"key":"ref_1","unstructured":"BeMiller, J., and Whistler, R. 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