{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["16(11)"],"submitter":["Horathal Pedige MP"],"pubmed_abstract":["Cellulose nanofibers (CNFs) are increasingly recognized as sustainable alternatives to petroleum-derived plastics. However, their intrinsic hydrophilicity results in poor water resistance, which severely restricts applications in humid or aqueous environments. Therefore, improving water durability while maintaining mechanical performance remains a key challenge. In this study, we fabricated water-resistant composite films by combining oxidized CNFs (OCNFs), obtained <i>via</i> a simple sodium hypochlorite (NaClO) oxidation introducing carboxyl groups, with chitosan (CS). The OCNF/CS films exhibited markedly enhanced tensile strength (∼50 MPa <i>vs.</i> ≤20 MPa for pristine OCNF) and retained their integrity in water for 24 h, with a swelling ratio of ∼200% compared to ≥900% for OCNF alone."],"journal":["RSC advances"],"pagination":["9621-9630"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12911662"],"repository":["biostudies-literature"],"pubmed_title":["NaClO-oxidized cellulose nanofiber/chitosan composite films with improved water resistance and high mechanical strength."],"pmcid":["PMC12911662"],"pubmed_authors":["Onishi R","Hatanaka Y","Horathal Pedige MP","Uyama H","Sugawara A"],"additional_accession":[]},"is_claimable":false,"name":"NaClO-oxidized cellulose nanofiber/chitosan composite films with improved water resistance and high mechanical strength.","description":"Cellulose nanofibers (CNFs) are increasingly recognized as sustainable alternatives to petroleum-derived plastics. However, their intrinsic hydrophilicity results in poor water resistance, which severely restricts applications in humid or aqueous environments. Therefore, improving water durability while maintaining mechanical performance remains a key challenge. In this study, we fabricated water-resistant composite films by combining oxidized CNFs (OCNFs), obtained <i>via</i> a simple sodium hypochlorite (NaClO) oxidation introducing carboxyl groups, with chitosan (CS). The OCNF/CS films exhibited markedly enhanced tensile strength (∼50 MPa <i>vs.</i> ≤20 MPa for pristine OCNF) and retained their integrity in water for 24 h, with a swelling ratio of ∼200% compared to ≥900% for OCNF alone.","dates":{"release":"2026-01-01T00:00:00Z","publication":"2026 Feb","modification":"2026-07-16T11:55:43.235Z","creation":"2026-07-09T10:52:15.077Z"},"accession":"S-EPMC12911662","cross_references":{"pubmed":["41710497"],"doi":["10.1039/d6ra00188b"]}}