Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/108877
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Alves, Luís | - |
dc.contributor.author | Ramos, Ana | - |
dc.contributor.author | Ferraz, Eduardo | - |
dc.contributor.author | Ferreira, Paulo J. T. | - |
dc.contributor.author | Rasteiro, Maria G | - |
dc.contributor.author | Gamelas, José A. F. | - |
dc.date.accessioned | 2023-09-21T13:37:47Z | - |
dc.date.available | 2023-09-21T13:37:47Z | - |
dc.date.issued | 2023 | - |
dc.identifier.issn | 0969-0239 | pt |
dc.identifier.issn | 1572-882X | pt |
dc.identifier.uri | https://hdl.handle.net/10316/108877 | - |
dc.description.abstract | Gas barrier properties are very relevant in composite materials for applications so diverse such as food packaging, electronics, or old document restoration. In the present work, four different types of cellulose nanofibres (CNFs), two types of clay minerals used individually (sepiolite) or combined (sepiolite + kaolinite), and the influence of pH, were explored in the production of composite films. Neat CNFs, only mechanically treated or prepared by enzymatic pre-treatment, gave films with good mechanical and barrier properties, but the addition of minerals led to a dramatic loss of these properties. Contrarily, the use of thin and functionalized fibrils (TEMPO-oxidised or cationized CNFs) gave composite films with good mechanical, thermal and barrier properties. Superior oxygen barrier properties (oxygen transmission rate (OTR) < 0.4 cm3 m−2 day−1) were obtained using TEMPO-oxidised CNF and 20% sepiolite, and, in general, for all the composite films containing the TEMPO CNF (OTR ≤ 1.8 cm3 m−2 day−1). The cationic CNF-based composites also showed a very good oxygen barrier (OTR ≤ 8.2 cm3 m−2 day−1). The high oxygen barrier could be explained by the compactness of the films and better entanglement of the more fibrillated nanocelluloses with the mineral particles. A decrease in the pH of the suspensions led to a decrease in the film preparation time, without a major negative impact on the composite film’s properties. | pt |
dc.description.sponsorship | The authors would like to acknowledge Fundação para a Ciência e Tecnologia (FCT) and FEDER for the financial support. The CIEPQPF is also acknowledged for the facilities and resource’s availability during the project development. | pt |
dc.language.iso | eng | pt |
dc.publisher | Springer Nature | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC/QUI-OUT/31884/2017/PT/New generation of composite films of cellulose nanofibrils with mineral particles as high strength materials with gas barrier properties | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/UIDB/00102/ 2020 | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB/05488/2020/PT/Technology, Restoration and Arts Enhancement Center | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | Nanocellulose | pt |
dc.subject | Cellulose nanofbrils | pt |
dc.subject | Water vapour transmission rate | pt |
dc.subject | Oxygen transmission rate | pt |
dc.subject | Gas permeability | pt |
dc.subject | Tensile strength | pt |
dc.title | Design of cellulose nanofibre-based composites with high barrier properties | pt |
dc.type | article | - |
degois.publication.title | Cellulose | pt |
dc.relation.publisherversion | https://link.springer.com/article/10.1007/s10570-023-05495-z | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1007/s10570-023-05495-z | pt |
dc.date.embargo | 2023-01-01 | * |
uc.date.periodoEmbargo | 0 | pt |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.openairetype | article | - |
item.languageiso639-1 | en | - |
item.fulltext | Com Texto completo | - |
item.cerifentitytype | Publications | - |
crisitem.project.grantno | Technology, Restoration and Arts Enhancement Center | - |
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.orcid | 0000-0003-4447-5107 | - |
crisitem.author.orcid | 0000-0002-4503-6811 | - |
crisitem.author.orcid | 0000-0001-6084-4553 | - |
Appears in Collections: | I&D CERES - Artigos em Revistas Internacionais FCTUC Eng.Química - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
s10570-023-05495-z.pdf | 1.64 MB | Adobe PDF | View/Open |
Page view(s)
106
checked on Aug 28, 2024
Download(s)
70
checked on Aug 28, 2024
Google ScholarTM
Check
Altmetric
Altmetric
This item is licensed under a Creative Commons License