Publication: Dynamically bonded cellulose nanocrystal hydrogels: structure, rheology and fire prevention performance
dc.contributor.coauthor | Kaynak-Uraz, Elif | |
dc.contributor.department | Department of Chemical and Biological Engineering | |
dc.contributor.department | Graduate School of Sciences and Engineering | |
dc.contributor.department | KUBAM (Koç University Boron and Advanced Materials Application and Research Center) | |
dc.contributor.department | KUYTAM (Koç University Surface Science and Technology Center) | |
dc.contributor.kuauthor | Koparipek, Nazlınur Arslan | |
dc.contributor.kuauthor | Şenses, Erkan | |
dc.contributor.schoolcollegeinstitute | College of Engineering | |
dc.contributor.schoolcollegeinstitute | GRADUATE SCHOOL OF SCIENCES AND ENGINEERING | |
dc.contributor.schoolcollegeinstitute | Research Center | |
dc.date.accessioned | 2024-12-29T09:36:45Z | |
dc.date.issued | 2024 | |
dc.description.abstract | Flame retardant composite hydrogels offer many advantages over conventional flame retardants, such as high water-retention capacity, enhanced fire resistance, and mechanical tunability. Herein, we developed flame-retardant dynamic covalent hydrogels using wood-derived cellulose nanocrystals (CNCs) crosslinked with boronate ester bonds, addressing environmental and health issues associated with the presence of non-biodegradable synthetic polymer and/or inorganic nanoparticle components in the existing systems. Our rheological investigation shows a liquid-to-soft-solid transition of CNC dispersions with tunable network elasticity ranging between ≈ 0.2 kPa to 3.5 kPa and an immediate self-healing ability. Coating pine wood with these hydrogels delayed ignition by about 30 s compared to native wood, and achieved a remarkable limiting oxygen index of 64.5 %. Also, the increased borax content of the gels was found to decrease and delay the first peak of the heat release rate up to 40 s, causing an increase in the fire retardancy index by 277 %. We correlate the microstructure and rheological behavior with the fire prevention mechanisms for the rational design of sustainable fire-retardant materials, and the results showcased a circular use of plant-based dynamic gels to prevent wood fires, even after drying- a feature lacking in conventional hydrogels. | |
dc.description.indexedby | WOS | |
dc.description.indexedby | Scopus | |
dc.description.indexedby | PubMed | |
dc.description.publisherscope | International | |
dc.description.sponsoredbyTubitakEu | TÜBİTAK | |
dc.description.sponsorship | This work is supported by 1001 Program of The Scientific and Technological Research Council of Turkey (TÜBİTAK) (Grant no: 222Z106). We thank Dr. Barış Yağci of Koc University Surface Science and Technology Center (KUYTAM) for his help with SEM images, and Assoc. Prof. Rana Özbal for giving access to their polarized optical microscopy. The authors also thank Gürdeniz Neşer for his assistance with the vertical flame tests. | |
dc.description.volume | 334 | |
dc.identifier.doi | 10.1016/j.carbpol.2024.122013 | |
dc.identifier.eissn | 1879-1344 | |
dc.identifier.issn | 0144-8617 | |
dc.identifier.quartile | Q1 | |
dc.identifier.scopus | 2-s2.0-85188088482 | |
dc.identifier.uri | https://doi.org/10.1016/j.carbpol.2024.122013 | |
dc.identifier.uri | https://hdl.handle.net/20.500.14288/22155 | |
dc.identifier.wos | 1219343300001 | |
dc.keywords | Borax | |
dc.keywords | Boron ester | |
dc.keywords | Cellulose nanocrystals (CNC) | |
dc.keywords | Dynamic covalent bond | |
dc.keywords | Flame-retardant | |
dc.keywords | Hydrogel | |
dc.keywords | Wildfire | |
dc.keywords | Wood fire | |
dc.language.iso | eng | |
dc.publisher | Elsevier Ltd | |
dc.relation.grantno | Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAK, (222Z106) | |
dc.relation.grantno | Türkiye Bilimsel ve Teknolojik Araştırma Kurumu, TÜBİTAK | |
dc.relation.ispartof | Carbohydrate Polymers | |
dc.subject | Chemistry, polymer science | |
dc.title | Dynamically bonded cellulose nanocrystal hydrogels: structure, rheology and fire prevention performance | |
dc.type | Journal Article | |
dspace.entity.type | Publication | |
local.contributor.kuauthor | Şenses, Erkan | |
local.contributor.kuauthor | Koparipek, Nazlınur Arslan | |
local.publication.orgunit1 | College of Engineering | |
local.publication.orgunit1 | GRADUATE SCHOOL OF SCIENCES AND ENGINEERING | |
local.publication.orgunit1 | Research Center | |
local.publication.orgunit2 | Department of Chemical and Biological Engineering | |
local.publication.orgunit2 | KUYTAM (Koç University Surface Science and Technology Center) | |
local.publication.orgunit2 | KUBAM (Koç University Boron and Advanced Materials Application and Research Center) | |
local.publication.orgunit2 | Graduate School of Sciences and Engineering | |
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