A general Metal-Ion-Modification route for preparing hydrophobic paper and tableware from lignocellulose fibers

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dc.contributor.authorNayanathara, R. M. Oshanien
dc.contributor.authorLeng, Weiqien
dc.contributor.authorLiyanage, Senal D.en
dc.contributor.authorWang, Xiangen
dc.contributor.authorWang, Luen
dc.contributor.authorWang, Jinwuen
dc.contributor.authorTian, Zhenhuaen
dc.contributor.authorPittman, Charles U.en
dc.contributor.authorGwaltney, Steven R.en
dc.contributor.authorZhang, Xuefengen
dc.date.accessioned2023-05-23T14:36:43Zen
dc.date.available2023-05-23T14:36:43Zen
dc.date.issued2023-03en
dc.description.abstractInherent hydrophilicity and poor water resistance prevent using lignocellulosic materials as green plastic al- ternatives to fossil fuel-based plastics. Here, we report a facile metal-ion-modification (MIM) route, swelling with aqueous metal ion solutions, and drying to convert conventional hydrophilic paper and wood pulp into biode- gradable hydrophobic paper and tableware without the addition of hydrophobic sizing chemicals/materials. Metal ions such as Fe3+ and Zr4+ can coordinate with pulp fibers' polar groups (i.e., OH, C-O, and COOH) that induce self-assembly of their surface fibrillated "hairy" cellulose nanofibrils to form a more compact structure with fewer available OH groups for water sorption. This decreases the surface energy of pulp fibers and increases their hydrophobicity and water resistance. Only similar to 3 mg of metal ions is needed to induce the wettability tran- sition in 1 g of kraft pulp, resulting in hydrophobic paper and tableware with water contact angles (WCAs) of 120-140 degrees. The coordinated Fe3+ and Zr4+ are stable, with negligible metal leaching during use, allowing the hydrophobic paper and tableware to be used for food packaging. This MIM technique can be integrated into the existing paper-making process for the scalable production of hydrophobic papers and tableware, providing an alternative route for developing sustainable and biodegradable plastic counterparts.en
dc.description.adminPublic domain – authored by a U.S. government employeeen
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1016/j.cej.2023.141596en
dc.identifier.eissn1873-3212en
dc.identifier.issn1385-8947en
dc.identifier.urihttp://hdl.handle.net/10919/115154en
dc.identifier.volume459en
dc.language.isoenen
dc.publisherElsevieren
dc.rightsPublic Domain (U.S.)en
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/en
dc.subjectLignocellulose fibersen
dc.subjectMetal-ion-modificationen
dc.subjectHydrophobizationen
dc.subjectWater-resistanten
dc.subjectPaper tablewareen
dc.titleA general Metal-Ion-Modification route for preparing hydrophobic paper and tableware from lignocellulose fibersen
dc.title.serialChemical Engineering Journalen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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