Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/105227
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Mazega, André | - |
dc.contributor.author | Tarrés, Quim | - |
dc.contributor.author | Aguado, Roberto | - |
dc.contributor.author | Pèlach, Maria Àngels | - |
dc.contributor.author | Mutjé, Pere | - |
dc.contributor.author | Ferreira, Paulo J. T. | - |
dc.contributor.author | Delgado-Aguilar, Marc | - |
dc.date.accessioned | 2023-02-09T14:28:28Z | - |
dc.date.available | 2023-02-09T14:28:28Z | - |
dc.date.issued | 2022-10-19 | - |
dc.identifier.issn | 2079-4991 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/105227 | - |
dc.description.abstract | Food packaging manufacturers often resort to lamination, typically with materials which are neither non-biodegradable nor biobased polymers, to confer barrier properties to paper and cardboard. The present work considers a greener solution: enhancing paper's resistance to moisture, grease, and air by aqueous coating suspensions. For hydrophobization, a combined approach between nanocellulose and common esterifying agents was considered, but the water vapor transmission rate (WVTR) remained excessively high for the goal of wrapping moisture-sensitive products (>600 g m-2 d-1). Nonetheless, oil-repellant surfaces were effectively obtained with nanocellulose, illite, sodium alginate, and/or poly(vinyl alcohol) (PVA), reaching Kit ratings up to 11. Regarding air resistance, mineral-rich coatings attained values above 1000 Gurley s. In light of these results, nanocellulose, minerals, PVA, pullulan, alginate, and a non-ionic surfactant were combined for multi-purpose coating formulations. It is hypothesized that these materials decrease porosity while complementing each other's flaws, e.g., PVA succeeds at decreasing porosity but has low dimensional stability. As an example, a suspension mostly constituted by nanocellulose, sizing agents, minerals and PVA yielded a WVTR of roughly 100 g m-2 d-1, a Kit rating of 12, and an air resistance above 300 s/100 mL. This indicates that multi-purpose coatings can be satisfactorily incorporated into paper structures for food packaging applications, although not as the food contact layer. | pt |
dc.description.sponsorship | The authors wish to acknowledge the financial support of the Spanish Ministry of Science and Innovation to the projects CON-FUTURO-ES (PID2020-113850RB-C22) and NextPack (PID2021-124766OA-I00). Marc Delgado-Aguilar and Quim Tarrés are Serra Húnter Fellows. | pt |
dc.language.iso | eng | pt |
dc.rights | openAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | Kit rating | pt |
dc.subject | air resistance | pt |
dc.subject | alginate | pt |
dc.subject | barrier properties | pt |
dc.subject | minerals | pt |
dc.subject | nanocellulose | pt |
dc.subject | packaging paper | pt |
dc.subject | poly(vinyl alcohol) | pt |
dc.subject | pullulan | pt |
dc.subject | water vapor transmission rate | pt |
dc.title | Improving the Barrier Properties of Paper to Moisture, Air, and Grease with Nanocellulose-Based Coating Suspensions | pt |
dc.type | article | - |
degois.publication.firstPage | 3675 | pt |
degois.publication.issue | 20 | pt |
degois.publication.title | Nanomaterials | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.3390/nano12203675 | pt |
degois.publication.volume | 12 | pt |
dc.date.embargo | 2022-10-19 | * |
uc.date.periodoEmbargo | 0 | pt |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | Com Texto completo | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry 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.orcid | 0000-0001-9864-1794 | - |
crisitem.author.orcid | 0000-0001-8211-4949 | - |
crisitem.author.orcid | 0000-0002-4503-6811 | - |
Appears in Collections: | I&D CIEPQPF - Artigos em Revistas Internacionais FCTUC Eng.Química - Artigos em Revistas Internacionais |
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File | Description | Size | Format | |
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nanomaterials-12-03675-v2.pdf | 2.7 MB | Adobe PDF | View/Open |
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