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Polymerizable Microsphere-Induced High Mechanical Strength of Hydrogel Composed of Acrylamide

Polymerizable microspheres are introduced into acrylamide to prepare the high mechanical strength hydrogels with a novel three-dimensional pore structure. Rheological properties, compressive stress–strain, tensile property, and compression strength of three different types of hydrogels were investig...

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Detalles Bibliográficos
Autores principales: Wang, Zhiyong, Lin, Meiqin, Wang, Menghan, Song, Xia, Zhang, Chuqiao, Dong, Zhaoxia, Zhang, Juan, Yang, Zihao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6025025/
https://www.ncbi.nlm.nih.gov/pubmed/29795001
http://dx.doi.org/10.3390/ma11060880
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author Wang, Zhiyong
Lin, Meiqin
Wang, Menghan
Song, Xia
Zhang, Chuqiao
Dong, Zhaoxia
Zhang, Juan
Yang, Zihao
author_facet Wang, Zhiyong
Lin, Meiqin
Wang, Menghan
Song, Xia
Zhang, Chuqiao
Dong, Zhaoxia
Zhang, Juan
Yang, Zihao
author_sort Wang, Zhiyong
collection PubMed
description Polymerizable microspheres are introduced into acrylamide to prepare the high mechanical strength hydrogels with a novel three-dimensional pore structure. Rheological properties, compressive stress–strain, tensile property, and compression strength of three different types of hydrogels were investigated. Moreover, a scanning electron microscope (SEM) was adopted to observe the three-dimension network structure of three different types of hydrogels. The test results illustrated that viscous moduli (G″) and elastic moduli (G′) of a hydrogel containing polymerizable microspheres (P) reached maximum values, compared to the normal hydrogel (N) and the composite hydrogel containing ordinary microspheres (O). When the hydrogels were squeezed, the N was easily fractured under high strain (99%), whereas the P was not broken, and quickly recovered its initial morphology after the release of load. The P showed excellent tensile properties, with an elongation at break up to 90% and a tensile strength greater than 220 g. The compression strength of the N was 100.44 kPa·m(−1), while the resulting strength of P was enhanced to be 248.00 kPa·m(−1). Therefore, the various performances of N were improved by adding polymerizable microspheres. In addition, the SEM images indicated that N has a general three-dimensional network structure; the conventional network structure did not exist in the P, which has a novel three-dimensional pore structure in the spherical projection and very dense channels, which led to the compaction of the space between the three-dimensional pore network layers and reduced the flowing of free water wrapped in the network. Therefore, the mechanical strength of hydrogel was enhanced.
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spelling pubmed-60250252018-07-09 Polymerizable Microsphere-Induced High Mechanical Strength of Hydrogel Composed of Acrylamide Wang, Zhiyong Lin, Meiqin Wang, Menghan Song, Xia Zhang, Chuqiao Dong, Zhaoxia Zhang, Juan Yang, Zihao Materials (Basel) Article Polymerizable microspheres are introduced into acrylamide to prepare the high mechanical strength hydrogels with a novel three-dimensional pore structure. Rheological properties, compressive stress–strain, tensile property, and compression strength of three different types of hydrogels were investigated. Moreover, a scanning electron microscope (SEM) was adopted to observe the three-dimension network structure of three different types of hydrogels. The test results illustrated that viscous moduli (G″) and elastic moduli (G′) of a hydrogel containing polymerizable microspheres (P) reached maximum values, compared to the normal hydrogel (N) and the composite hydrogel containing ordinary microspheres (O). When the hydrogels were squeezed, the N was easily fractured under high strain (99%), whereas the P was not broken, and quickly recovered its initial morphology after the release of load. The P showed excellent tensile properties, with an elongation at break up to 90% and a tensile strength greater than 220 g. The compression strength of the N was 100.44 kPa·m(−1), while the resulting strength of P was enhanced to be 248.00 kPa·m(−1). Therefore, the various performances of N were improved by adding polymerizable microspheres. In addition, the SEM images indicated that N has a general three-dimensional network structure; the conventional network structure did not exist in the P, which has a novel three-dimensional pore structure in the spherical projection and very dense channels, which led to the compaction of the space between the three-dimensional pore network layers and reduced the flowing of free water wrapped in the network. Therefore, the mechanical strength of hydrogel was enhanced. MDPI 2018-05-24 /pmc/articles/PMC6025025/ /pubmed/29795001 http://dx.doi.org/10.3390/ma11060880 Text en © 2018 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
Wang, Zhiyong
Lin, Meiqin
Wang, Menghan
Song, Xia
Zhang, Chuqiao
Dong, Zhaoxia
Zhang, Juan
Yang, Zihao
Polymerizable Microsphere-Induced High Mechanical Strength of Hydrogel Composed of Acrylamide
title Polymerizable Microsphere-Induced High Mechanical Strength of Hydrogel Composed of Acrylamide
title_full Polymerizable Microsphere-Induced High Mechanical Strength of Hydrogel Composed of Acrylamide
title_fullStr Polymerizable Microsphere-Induced High Mechanical Strength of Hydrogel Composed of Acrylamide
title_full_unstemmed Polymerizable Microsphere-Induced High Mechanical Strength of Hydrogel Composed of Acrylamide
title_short Polymerizable Microsphere-Induced High Mechanical Strength of Hydrogel Composed of Acrylamide
title_sort polymerizable microsphere-induced high mechanical strength of hydrogel composed of acrylamide
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6025025/
https://www.ncbi.nlm.nih.gov/pubmed/29795001
http://dx.doi.org/10.3390/ma11060880
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