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Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces

Hugo Spieser, Aurore Denneulin, Davide Deganello Orcid Logo, David Gethin Orcid Logo, Rajesh Koppolu, Julien Bras

Carbohydrate Polymers, Volume: 240, Start page: 116305

Swansea University Authors: Davide Deganello Orcid Logo, David Gethin Orcid Logo

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DOI (Published version): 10.1016/j.carbpol.2020.116305

Abstract

An active ink composed of cellulose nanofibrils and silver nanowires was deposited on flexible and transparent polymer films using the bar coating process, achieving controlled thicknesses ranging from 200 nm up to 2 µm. For 350 nm thick coating on polyethylene terephthalate films, high transparency...

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Published in: Carbohydrate Polymers
ISSN: 0144-8617
Published: Elsevier BV 2020
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URI: https://cronfa.swan.ac.uk/Record/cronfa54024
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first_indexed 2020-04-23T13:23:07Z
last_indexed 2020-05-16T03:46:56Z
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spelling 2020-05-15T20:37:46.6080161 v2 54024 2020-04-23 Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces ea38a0040bdfd3875506189e3629b32a 0000-0001-8341-4177 Davide Deganello Davide Deganello true false 20b93675a5457203ae87ebc32bd6d155 0000-0002-7142-8253 David Gethin David Gethin true false 2020-04-23 MECH An active ink composed of cellulose nanofibrils and silver nanowires was deposited on flexible and transparent polymer films using the bar coating process, achieving controlled thicknesses ranging from 200 nm up to 2 µm. For 350 nm thick coating on polyethylene terephthalate films, high transparency (75.6% transmittance) and strong reduction of bacterial growth equal to 89.3% and 100% was noted respectively against Gram-negative Escherichia Coli and Gram-positive Staphylococcus Aureus bacteria using AATCC contact active standard test. Retained antibacterial activity was found with films produced by reverse gravure roll-to-roll process, showing the promising capability of this antibacterial solution to be deployed industrially. Finally, the same ink was also deposited on polylactic acid substrate to investigate barrier properties: for 350 nm thick coating, a reduction of 49% of oxygen transmission rate (dry conditions) and 47% reduction of water vapor transmission rate was noted, proving the enhanced barrier properties of the coatings. Journal Article Carbohydrate Polymers 240 116305 Elsevier BV 0144-8617 cellulose nanofibrils, silver nanowires, transparent coatings, antibacterial activity, barrier properties, up-scaling 15 7 2020 2020-07-15 10.1016/j.carbpol.2020.116305 COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2020-05-15T20:37:46.6080161 2020-04-23T09:55:48.7329822 Hugo Spieser 1 Aurore Denneulin 2 Davide Deganello 0000-0001-8341-4177 3 David Gethin 0000-0002-7142-8253 4 Rajesh Koppolu 5 Julien Bras 6 54024__17118__c8a14cb15a914b7a8e40156c30391d74.pdf 54024.pdf 2020-04-23T10:00:18.8600619 Output 2569199 application/pdf Accepted Manuscript true 2021-04-22T00:00:00.0000000 © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license. true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces
spellingShingle Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces
Davide Deganello
David Gethin
title_short Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces
title_full Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces
title_fullStr Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces
title_full_unstemmed Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces
title_sort Cellulose nanofibrils and silver nanowires active coatings for the development of antibacterial packaging surfaces
author_id_str_mv ea38a0040bdfd3875506189e3629b32a
20b93675a5457203ae87ebc32bd6d155
author_id_fullname_str_mv ea38a0040bdfd3875506189e3629b32a_***_Davide Deganello
20b93675a5457203ae87ebc32bd6d155_***_David Gethin
author Davide Deganello
David Gethin
author2 Hugo Spieser
Aurore Denneulin
Davide Deganello
David Gethin
Rajesh Koppolu
Julien Bras
format Journal article
container_title Carbohydrate Polymers
container_volume 240
container_start_page 116305
publishDate 2020
institution Swansea University
issn 0144-8617
doi_str_mv 10.1016/j.carbpol.2020.116305
publisher Elsevier BV
document_store_str 1
active_str 0
description An active ink composed of cellulose nanofibrils and silver nanowires was deposited on flexible and transparent polymer films using the bar coating process, achieving controlled thicknesses ranging from 200 nm up to 2 µm. For 350 nm thick coating on polyethylene terephthalate films, high transparency (75.6% transmittance) and strong reduction of bacterial growth equal to 89.3% and 100% was noted respectively against Gram-negative Escherichia Coli and Gram-positive Staphylococcus Aureus bacteria using AATCC contact active standard test. Retained antibacterial activity was found with films produced by reverse gravure roll-to-roll process, showing the promising capability of this antibacterial solution to be deployed industrially. Finally, the same ink was also deposited on polylactic acid substrate to investigate barrier properties: for 350 nm thick coating, a reduction of 49% of oxygen transmission rate (dry conditions) and 47% reduction of water vapor transmission rate was noted, proving the enhanced barrier properties of the coatings.
published_date 2020-07-15T04:07:19Z
_version_ 1763753527400726528
score 11.037581

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