Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/95604
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Almeida, R. O. | - |
dc.contributor.author | Ramos, A. | - |
dc.contributor.author | Alves, L. | - |
dc.contributor.author | Potsi, E. | - |
dc.contributor.author | Ferreira, P. J. T. | - |
dc.contributor.author | Carvalho, M. G. V. S. | - |
dc.contributor.author | Rasteiro, M. G. | - |
dc.contributor.author | Gamelas, J. A. F. | - |
dc.date.accessioned | 2021-08-17T11:47:57Z | - |
dc.date.available | 2021-08-17T11:47:57Z | - |
dc.date.issued | 2021-08-06 | - |
dc.identifier.issn | 01418130 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/95604 | - |
dc.description.abstract | Wood/wastes from invasive tree species Acacia dealbata and Ailanthus altissima were used to produce high-value added nanocellulose. Firstly, bleached pulps were produced from the wood of these tree species after kraft cooking. Afterwards, the resultant pulps were pre-treated by TEMPO-mediated oxidation (Acacia dealbata) or enzymatic hydrolysis (Ailanthus altissima) followed by high-pressure homogenization. Hydrogels were obtained and characterized for their main physical and chemical properties, including rheology and evaluation of the surface properties of the freeze-dried materials by inverse gas chromatography. Results showed that micro/nanofibrils could be obtained from the wood of these invasive species. Rheometry studies showed that Acacia-TEMPO cellulose nanofibrils form strong gels with high yield stress point and viscosities (reaching ca. 100,000 Pa·s). Additionally, the surfaces of the obtained nanocelluloses showed a dispersive component of the surface energy near 40 mJ/m2 and a prevalence of the Lewis acidic character over the basic one, as typical for cellulose-based materials. Finally, films with good mechanical and optical properties could be obtained from the cellulose hydrogels. Acacia-TEMPO film (produced by filtration/hot pressing) showed a tensile strength of 79 MPa, Young's modulus of 7.9 GPa, and a transparency of 88%. The water vapor barrier, however, was modest (permeability of 4.9 × 10-6 g/(Pa·day·m)). | pt |
dc.language.iso | eng | pt |
dc.publisher | Elsevier | pt |
dc.relation | info:eu-repo/grantAgreement/MATIS/CENTRO-01-0145-FEDER-000014/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/UIDB/00102/ 2020/PT | pt |
dc.rights | embargoedAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | pt |
dc.subject | Cellulose nanofibrils | pt |
dc.subject | Circular economy | pt |
dc.subject | Films | pt |
dc.subject | Invasive species | pt |
dc.subject | Inverse gas chromatography | pt |
dc.subject | Waste valorisation | pt |
dc.title | Production of nanocellulose gels and films from invasive tree species | pt |
dc.type | article | - |
degois.publication.title | International Journal of Biological Macromolecules | pt |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/pii/S0141813021016743 | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1016/j.ijbiomac.2021.08.015 | pt |
dc.date.embargo | 2022-08-06 | * |
uc.date.periodoEmbargo | 365 | pt |
item.grantfulltext | open | - |
item.fulltext | Com Texto completo | - |
item.openairetype | article | - |
item.languageiso639-1 | en | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.cerifentitytype | Publications | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.researchunit | CIEPQPF – Chemical Process Engineering and Forest Products Research Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0002-4503-6811 | - |
crisitem.author.orcid | 0000-0002-6636-3133 | - |
crisitem.author.orcid | 0000-0001-6084-4553 | - |
crisitem.author.orcid | 0000-0002-1474-767X | - |
Appears in Collections: | I&D CIEPQPF - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Poofs_pagination_BIOMAC_19077.pdf | 1.58 MB | Adobe PDF | View/Open |
SCOPUSTM
Citations
6
checked on Nov 17, 2022
WEB OF SCIENCETM
Citations
5
checked on Nov 15, 2022
Page view(s)
165
checked on Apr 24, 2024
Download(s)
164
checked on Apr 24, 2024
Google ScholarTM
Check
Altmetric
Altmetric
This item is licensed under a Creative Commons License