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Triple network hydrogels (TN gels) prepared by a one-pot, two-step method with high mechanical properties

In this work, poly(vinyl alcohol) (PVA) was incorporated into the networks of polyacrylamide/polyacrylic acid (PAM/PAA) to prepare novel PAM/PAA/PVA Triple-network (TN) hydrogels by an in situ polymerization and repeated freezing–thawing (F–T) process. The TN hydrogels have not only high mechanical...

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Detalles Bibliográficos
Autores principales: Wang, Xiangong, Zhao, Fang, Pang, Bo, Qin, Xuping, Feng, Shengyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078323/
https://www.ncbi.nlm.nih.gov/pubmed/35540340
http://dx.doi.org/10.1039/c7ra13360j
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author Wang, Xiangong
Zhao, Fang
Pang, Bo
Qin, Xuping
Feng, Shengyu
author_facet Wang, Xiangong
Zhao, Fang
Pang, Bo
Qin, Xuping
Feng, Shengyu
author_sort Wang, Xiangong
collection PubMed
description In this work, poly(vinyl alcohol) (PVA) was incorporated into the networks of polyacrylamide/polyacrylic acid (PAM/PAA) to prepare novel PAM/PAA/PVA Triple-network (TN) hydrogels by an in situ polymerization and repeated freezing–thawing (F–T) process. The TN hydrogels have not only high mechanical strength, but also a moderate swelling ability by varying the weight ratio of calcium chloride (CaCl(2)) and PVA and free shaping. The compressive stress of the as-prepared hydrogels could reach 11 MPa, and the highest stretching stress could reach 0.8 MPa. Upon mechanical loading, the coordination network between PAA and CaCl(2) served as sacrificial bonds to efficiently dissipate energy. However, they can reform when the mechanical load is released, resulting from the fast coordination between PAA and Ca(2+). Therefore, TN hydrogels have potential application in biomaterials.
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spelling pubmed-90783232022-05-09 Triple network hydrogels (TN gels) prepared by a one-pot, two-step method with high mechanical properties Wang, Xiangong Zhao, Fang Pang, Bo Qin, Xuping Feng, Shengyu RSC Adv Chemistry In this work, poly(vinyl alcohol) (PVA) was incorporated into the networks of polyacrylamide/polyacrylic acid (PAM/PAA) to prepare novel PAM/PAA/PVA Triple-network (TN) hydrogels by an in situ polymerization and repeated freezing–thawing (F–T) process. The TN hydrogels have not only high mechanical strength, but also a moderate swelling ability by varying the weight ratio of calcium chloride (CaCl(2)) and PVA and free shaping. The compressive stress of the as-prepared hydrogels could reach 11 MPa, and the highest stretching stress could reach 0.8 MPa. Upon mechanical loading, the coordination network between PAA and CaCl(2) served as sacrificial bonds to efficiently dissipate energy. However, they can reform when the mechanical load is released, resulting from the fast coordination between PAA and Ca(2+). Therefore, TN hydrogels have potential application in biomaterials. The Royal Society of Chemistry 2018-02-12 /pmc/articles/PMC9078323/ /pubmed/35540340 http://dx.doi.org/10.1039/c7ra13360j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Wang, Xiangong
Zhao, Fang
Pang, Bo
Qin, Xuping
Feng, Shengyu
Triple network hydrogels (TN gels) prepared by a one-pot, two-step method with high mechanical properties
title Triple network hydrogels (TN gels) prepared by a one-pot, two-step method with high mechanical properties
title_full Triple network hydrogels (TN gels) prepared by a one-pot, two-step method with high mechanical properties
title_fullStr Triple network hydrogels (TN gels) prepared by a one-pot, two-step method with high mechanical properties
title_full_unstemmed Triple network hydrogels (TN gels) prepared by a one-pot, two-step method with high mechanical properties
title_short Triple network hydrogels (TN gels) prepared by a one-pot, two-step method with high mechanical properties
title_sort triple network hydrogels (tn gels) prepared by a one-pot, two-step method with high mechanical properties
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9078323/
https://www.ncbi.nlm.nih.gov/pubmed/35540340
http://dx.doi.org/10.1039/c7ra13360j
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