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Stretchable self-healing hydrogels capable of heavy metal ion scavenging
Self-healing hydrogels were prepared by simply mixing phytic acid (PA) and chitosan (CS) in water. Determined by scanning electron microscopy (SEM), the hydrogels were found to be a three-dimensional (3D) porous network structure. The formation of the network structure was considered to be mainly dr...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9065012/ https://www.ncbi.nlm.nih.gov/pubmed/35516891 http://dx.doi.org/10.1039/c9ra03443a |
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author | Song, Dandan Kang, Beibei Zhao, Zengdian Song, Shasha |
author_facet | Song, Dandan Kang, Beibei Zhao, Zengdian Song, Shasha |
author_sort | Song, Dandan |
collection | PubMed |
description | Self-healing hydrogels were prepared by simply mixing phytic acid (PA) and chitosan (CS) in water. Determined by scanning electron microscopy (SEM), the hydrogels were found to be a three-dimensional (3D) porous network structure. The formation of the network structure was considered to be mainly driven by electrostatic interactions and hydrogen bonding, cooperating with the subtle balance of multiple noncovalent interactions. The rheological data indicated that the hydrogels presented excellent mechanical properties with an elastic modulus of 20 000 Pa and a yield stress exceeding 7000 Pa. The dynamic dissociation and recombination of hydrogen bonding and electrostatic interaction in fractured regions of the gels initiated the self-healable property of PA/CS hydrogels. Since PA had high coordination ability to metal ions, PA/CS hydrogels were shown to exhibit excellent capability for capturing heavy metal ions, for example, Pb(2+) and Cd(2+). The PA/CS hydrogels provided a simple, green, and high efficiency strategic approach to scavenging heavy-metal ions from industrial sewage. |
format | Online Article Text |
id | pubmed-9065012 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90650122022-05-04 Stretchable self-healing hydrogels capable of heavy metal ion scavenging Song, Dandan Kang, Beibei Zhao, Zengdian Song, Shasha RSC Adv Chemistry Self-healing hydrogels were prepared by simply mixing phytic acid (PA) and chitosan (CS) in water. Determined by scanning electron microscopy (SEM), the hydrogels were found to be a three-dimensional (3D) porous network structure. The formation of the network structure was considered to be mainly driven by electrostatic interactions and hydrogen bonding, cooperating with the subtle balance of multiple noncovalent interactions. The rheological data indicated that the hydrogels presented excellent mechanical properties with an elastic modulus of 20 000 Pa and a yield stress exceeding 7000 Pa. The dynamic dissociation and recombination of hydrogen bonding and electrostatic interaction in fractured regions of the gels initiated the self-healable property of PA/CS hydrogels. Since PA had high coordination ability to metal ions, PA/CS hydrogels were shown to exhibit excellent capability for capturing heavy metal ions, for example, Pb(2+) and Cd(2+). The PA/CS hydrogels provided a simple, green, and high efficiency strategic approach to scavenging heavy-metal ions from industrial sewage. The Royal Society of Chemistry 2019-06-17 /pmc/articles/PMC9065012/ /pubmed/35516891 http://dx.doi.org/10.1039/c9ra03443a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Song, Dandan Kang, Beibei Zhao, Zengdian Song, Shasha Stretchable self-healing hydrogels capable of heavy metal ion scavenging |
title | Stretchable self-healing hydrogels capable of heavy metal ion scavenging |
title_full | Stretchable self-healing hydrogels capable of heavy metal ion scavenging |
title_fullStr | Stretchable self-healing hydrogels capable of heavy metal ion scavenging |
title_full_unstemmed | Stretchable self-healing hydrogels capable of heavy metal ion scavenging |
title_short | Stretchable self-healing hydrogels capable of heavy metal ion scavenging |
title_sort | stretchable self-healing hydrogels capable of heavy metal ion scavenging |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9065012/ https://www.ncbi.nlm.nih.gov/pubmed/35516891 http://dx.doi.org/10.1039/c9ra03443a |
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