The Role of Eucalyptus Species on the Structural and Thermal Performance of Cellulose Nanocrystals (CNCs) Isolated by Acid Hydrolysis

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dc.contributor.authorGil-Castell, Oscar
dc.contributor.authorReyes-Contreras, Pablo
dc.contributor.authorBarra, Pabla Andrea
dc.contributor.authorTeixeira Mendonca, Regis
dc.contributor.authorCarrillo-Varela, Isabel
dc.contributor.authorBadia, Jose David
dc.contributor.authorSerra, Angels
dc.contributor.authorRibes-Greus, Amparo
dc.date.accessioned2025-01-20T21:12:51Z
dc.date.available2025-01-20T21:12:51Z
dc.date.issued2022
dc.description.abstractCellulose nanocrystals (CNCs) are attractive materials due to their renewable nature, high surface-to-volume ratio, crystallinity, biodegradability, anisotropic performance, or available hydroxyl groups. However, their source and obtaining pathway determine their subsequent performance. This work evaluates cellulose nanocrystals (CNCs) obtained from four different eucalyptus species by acid hydrolysis, i.e., E. benthamii, E. globulus, E. smithii, and the hybrid En x Eg. During preparation, CNCs incorporated sulphate groups to their structures, which highlighted dissimilar reactivities, as given by the calculated sulphate index (0.21, 0.97, 0.73 and 0.85, respectively). Although the impact of the incorporation of sulphate groups on the crystalline structure was committed, changes in the hydrophilicity and water retention ability or thermal stability were observed. These effects were also corroborated by the apparent activation energy during thermal decomposition obtained through kinetic analysis. Low-sulphated CNCs (E. benthamii) involved hints of a more crystalline structure along with less water retention ability, higher thermal stability, and greater average apparent activation energy (233 kJ center dot mol(-1)) during decomposition. Conversely, the high-sulphated species (E. globulus) involved higher reactivity during preparation that endorsed a little greater water retention ability and lower thermal stability, with subsequently less average apparent activation energy (185 kJ center dot mol(-1)). The E. smithii (212 kJ center dot mol(-1)) and En x Eg (196 kJ center dot mol(-1)) showed an intermediate behavior according to their sulphate index.
dc.fuente.origenWOS
dc.identifier.doi10.3390/polym14030423
dc.identifier.eissn2073-4360
dc.identifier.urihttps://doi.org/10.3390/polym14030423
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/93678
dc.identifier.wosidWOS:000760580900001
dc.issue.numero3
dc.language.isoen
dc.revistaPolymers
dc.rightsacceso restringido
dc.subjectcellulose nanocrystals (CNC)
dc.subjecteucalyptus
dc.subjectcrystallinity
dc.subjectthermal stability
dc.subjectkinetic analysis
dc.titleThe Role of Eucalyptus Species on the Structural and Thermal Performance of Cellulose Nanocrystals (CNCs) Isolated by Acid Hydrolysis
dc.typeartículo
dc.volumen14
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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