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Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial surfaces

Hugo Spieser, Alexandre Jardin, Davide Deganello Orcid Logo, David Gethin Orcid Logo, Julien Bras, Aurore Denneulin

Journal of Materials Science, Volume: 56, Issue: 21, Pages: 12524 - 12538

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

Abstract

TEMPO (2,2,6,6-tetramethylpiperidine-N-oxyl)-oxidized cellulose nanofibrils (T-CNF) and silver nanowires (Ag NWs) were formulated as active inks. Their rheological properties were investigated to design optimal conditions for processing by the screen-printing process, with the aim of preparing antib...

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Published in: Journal of Materials Science
ISSN: 0022-2461 1573-4803
Published: Springer Science and Business Media LLC 2021
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URI: https://cronfa.swan.ac.uk/Record/cronfa56873
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spelling 2021-05-25T12:09:14.3616817 v2 56873 2021-05-14 Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial surfaces ea38a0040bdfd3875506189e3629b32a 0000-0001-8341-4177 Davide Deganello Davide Deganello true false 20b93675a5457203ae87ebc32bd6d155 0000-0002-7142-8253 David Gethin David Gethin true false 2021-05-14 MECH TEMPO (2,2,6,6-tetramethylpiperidine-N-oxyl)-oxidized cellulose nanofibrils (T-CNF) and silver nanowires (Ag NWs) were formulated as active inks. Their rheological properties were investigated to design optimal conditions for processing by the screen-printing process, with the aim of preparing antibacterial patterns. Rheological experiments mimicking the screen-printing process were applied to different ink formulations to investigate their thixotropic and viscosity properties. The experiments conducted at 1wt% total mass content and different ratios of T-CNF/Ag NWs showed that the recovery (%), the recovery time and the viscosity are formulation dependent. A ratio 2:1 (T-CNF/Ag NWs) and total mass content of 2.5wt% were then selected to prepare an ink suitable for screen printing. Printing defects were corrected by addition of water-soluble polymer hydroxypropyl methylcellulose (HPMC). The selected formulation printed on flexible polyethylene terephthalate (PET) substrate displayed a 67.4% antibacterial activity against E. coli in a standard contact active test, with a transparency superior to 70%, proving the promising features of the developed solution for active packaging applications. Journal Article Journal of Materials Science 56 21 12524 12538 Springer Science and Business Media LLC 0022-2461 1573-4803 1 7 2021 2021-07-01 10.1007/s10853-021-06082-y COLLEGE NANME Mechanical Engineering COLLEGE CODE MECH Swansea University 2021-05-25T12:09:14.3616817 2021-05-14T11:18:56.8907809 College of Engineering Engineering Hugo Spieser 1 Alexandre Jardin 2 Davide Deganello 0000-0001-8341-4177 3 David Gethin 0000-0002-7142-8253 4 Julien Bras 5 Aurore Denneulin 6 56873__19895__b3bcd1a34226446abbd2afe91062c534.pdf 56873.pdf 2021-05-14T11:20:44.2951616 Output 1114368 application/pdf Accepted Manuscript true 2022-04-19T00:00:00.0000000 true eng http://creativecommons.org/licenses/by-nc-nd/4.0/
title Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial surfaces
spellingShingle Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial surfaces
Davide Deganello
David Gethin
title_short Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial surfaces
title_full Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial surfaces
title_fullStr Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial surfaces
title_full_unstemmed Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial surfaces
title_sort Rheology of cellulose nanofibrils and silver nanowires for the development of screen-printed antibacterial 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
Alexandre Jardin
Davide Deganello
David Gethin
Julien Bras
Aurore Denneulin
format Journal article
container_title Journal of Materials Science
container_volume 56
container_issue 21
container_start_page 12524
publishDate 2021
institution Swansea University
issn 0022-2461
1573-4803
doi_str_mv 10.1007/s10853-021-06082-y
publisher Springer Science and Business Media LLC
college_str College of Engineering
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hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
document_store_str 1
active_str 0
description TEMPO (2,2,6,6-tetramethylpiperidine-N-oxyl)-oxidized cellulose nanofibrils (T-CNF) and silver nanowires (Ag NWs) were formulated as active inks. Their rheological properties were investigated to design optimal conditions for processing by the screen-printing process, with the aim of preparing antibacterial patterns. Rheological experiments mimicking the screen-printing process were applied to different ink formulations to investigate their thixotropic and viscosity properties. The experiments conducted at 1wt% total mass content and different ratios of T-CNF/Ag NWs showed that the recovery (%), the recovery time and the viscosity are formulation dependent. A ratio 2:1 (T-CNF/Ag NWs) and total mass content of 2.5wt% were then selected to prepare an ink suitable for screen printing. Printing defects were corrected by addition of water-soluble polymer hydroxypropyl methylcellulose (HPMC). The selected formulation printed on flexible polyethylene terephthalate (PET) substrate displayed a 67.4% antibacterial activity against E. coli in a standard contact active test, with a transparency superior to 70%, proving the promising features of the developed solution for active packaging applications.
published_date 2021-07-01T04:12:41Z
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