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

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

dc.contributor.author	Gil Castell, O.
dc.contributor.author	Reyes-Contreras, Pablo
dc.contributor.author	Barra, Pabla Andrea
dc.contributor.author	Teixeira Mendonça, Regis
dc.contributor.author	Carrillo-Varela, Isabel
dc.contributor.author	Badia Valiente, José David
dc.contributor.author	Serra, A.
dc.contributor.author	Ribes Greus, A.
dc.date.accessioned	2022-12-16T15:16:53Z
dc.date.available	2022-12-16T15:16:53Z
dc.date.issued	2022
dc.identifier.citation	Gil Castell, O. Reyes-Contreras, Pablo Barra, Pabla Andrea Teixeira Mendonça, Regis Carrillo-Varela, Isabel Badia Valiente, José David Serra, A. Ribes Greus, A. 2022 The Role of Eucalyptus Species on the Structural and Thermal Performance of Cellulose Nanocrystals (CNCs) Isolated by Acid Hydrolysis Polymers 14 3 423
dc.identifier.uri	https://hdl.handle.net/10550/84804
dc.description.abstract	Cellulose 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 × 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·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·mol−1). The E. smithii (212 kJ·mol−1) and En × Eg (196 kJ·mol−1) showed an intermediate behavior according to their sulphate index.
dc.language.iso	eng
dc.relation.ispartof	Polymers, 2022, vol. 14, num. 3, p. 423
dc.subject	Cristalls
dc.subject	Solucions polimèriques
dc.subject	Materials
dc.title	The Role of Eucalyptus Species on the Structural and Thermal Performance of Cellulose Nanocrystals (CNCs) Isolated by Acid Hydrolysis
dc.type	journal article	es_ES
dc.date.updated	2022-12-16T15:16:53Z
dc.identifier.doi	10.3390/polym14030423
dc.identifier.idgrec	155959
dc.rights.accessRights	open access	es_ES