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Fast-Growing Bacterial Cellulose with Outstanding Mechanical Properties via Cross-Linking by Multivalent Ions

Bacterial cellulose is an organic product of certain bacterias’ metabolism. It differs from plant cellulose by exhibiting a high strength and purity, making it especially interesting for flexible electronics, membranes for water purification, tissue engineering for humans or even as artificial skin...

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Detalles Bibliográficos
Autores principales: Knöller, Andrea, Widenmeyer, Marc, Bill, Joachim, Burghard, Zaklina
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7344470/
https://www.ncbi.nlm.nih.gov/pubmed/32599920
http://dx.doi.org/10.3390/ma13122838
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author Knöller, Andrea
Widenmeyer, Marc
Bill, Joachim
Burghard, Zaklina
author_facet Knöller, Andrea
Widenmeyer, Marc
Bill, Joachim
Burghard, Zaklina
author_sort Knöller, Andrea
collection PubMed
description Bacterial cellulose is an organic product of certain bacterias’ metabolism. It differs from plant cellulose by exhibiting a high strength and purity, making it especially interesting for flexible electronics, membranes for water purification, tissue engineering for humans or even as artificial skin and ligaments for robotic devices. However, bacterial cellulose’s naturally slow growth rate has limited its large-scale applicability to date. Titanium (IV) bis-(ammonium lactato) dihydroxide is shown to be a powerful tool to boost the growth rate of bacterial cellulose production by more than one order of magnitude and that it simultaneously serves as a precursor for the Ti(4+)-coordinated cross-linking of the fibers during membrane formation. The latter results in an almost two-fold increase in Young’s modulus (~18.59 GPa), a more than three-fold increase in tensile strength (~436.70 MPa) and even a four-fold increase in toughness (~6.81 MJ m(−)³), as compared to the pure bacterial cellulose membranes.
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spelling pubmed-73444702020-07-14 Fast-Growing Bacterial Cellulose with Outstanding Mechanical Properties via Cross-Linking by Multivalent Ions Knöller, Andrea Widenmeyer, Marc Bill, Joachim Burghard, Zaklina Materials (Basel) Article Bacterial cellulose is an organic product of certain bacterias’ metabolism. It differs from plant cellulose by exhibiting a high strength and purity, making it especially interesting for flexible electronics, membranes for water purification, tissue engineering for humans or even as artificial skin and ligaments for robotic devices. However, bacterial cellulose’s naturally slow growth rate has limited its large-scale applicability to date. Titanium (IV) bis-(ammonium lactato) dihydroxide is shown to be a powerful tool to boost the growth rate of bacterial cellulose production by more than one order of magnitude and that it simultaneously serves as a precursor for the Ti(4+)-coordinated cross-linking of the fibers during membrane formation. The latter results in an almost two-fold increase in Young’s modulus (~18.59 GPa), a more than three-fold increase in tensile strength (~436.70 MPa) and even a four-fold increase in toughness (~6.81 MJ m(−)³), as compared to the pure bacterial cellulose membranes. MDPI 2020-06-24 /pmc/articles/PMC7344470/ /pubmed/32599920 http://dx.doi.org/10.3390/ma13122838 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Knöller, Andrea
Widenmeyer, Marc
Bill, Joachim
Burghard, Zaklina
Fast-Growing Bacterial Cellulose with Outstanding Mechanical Properties via Cross-Linking by Multivalent Ions
title Fast-Growing Bacterial Cellulose with Outstanding Mechanical Properties via Cross-Linking by Multivalent Ions
title_full Fast-Growing Bacterial Cellulose with Outstanding Mechanical Properties via Cross-Linking by Multivalent Ions
title_fullStr Fast-Growing Bacterial Cellulose with Outstanding Mechanical Properties via Cross-Linking by Multivalent Ions
title_full_unstemmed Fast-Growing Bacterial Cellulose with Outstanding Mechanical Properties via Cross-Linking by Multivalent Ions
title_short Fast-Growing Bacterial Cellulose with Outstanding Mechanical Properties via Cross-Linking by Multivalent Ions
title_sort fast-growing bacterial cellulose with outstanding mechanical properties via cross-linking by multivalent ions
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7344470/
https://www.ncbi.nlm.nih.gov/pubmed/32599920
http://dx.doi.org/10.3390/ma13122838
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