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Rapid Accessible Fabrication and Engineering of Bilayered Hydrogels: Revisiting the Cross-Linking Effect on Superabsorbent Poly(acrylic acid)

[Image: see text] Superabsorbent hydrogels are significant not only in materials science but also in industries and daily life, being used in diapers or soil conditioners as typical examples. The main feature of these materials is their capacity to hold considerable amount of water, which is strongl...

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Autores principales: Lee, Kyoung Min, Kim, Hea Ji, Jung, Doyoung, Oh, Yuree, Lee, Hyemin, Han, Changsun, Chang, Ji Young, Kim, Hyungwoo
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2018
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641435/
https://www.ncbi.nlm.nih.gov/pubmed/31458571
http://dx.doi.org/10.1021/acsomega.8b00079
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author Lee, Kyoung Min
Kim, Hea Ji
Jung, Doyoung
Oh, Yuree
Lee, Hyemin
Han, Changsun
Chang, Ji Young
Kim, Hyungwoo
author_facet Lee, Kyoung Min
Kim, Hea Ji
Jung, Doyoung
Oh, Yuree
Lee, Hyemin
Han, Changsun
Chang, Ji Young
Kim, Hyungwoo
author_sort Lee, Kyoung Min
collection PubMed
description [Image: see text] Superabsorbent hydrogels are significant not only in materials science but also in industries and daily life, being used in diapers or soil conditioners as typical examples. The main feature of these materials is their capacity to hold considerable amount of water, which is strongly dependent on the cross-linking density. This study focuses on the preparation of hydrogels by reweighing the effect of cross-linking density on physical properties, which provides green fabrication of bilayered hydrogels that consist of homogeneous structural motifs but show programmed responses via sequential radical polymerization. In particular, when two hydrogel layers containing different cross-linking densities are joined together, an integrated linear bilayer shows heterogeneous deformation triggered by water. We monitor the linear hydrogel bilayer bending into a circle and engineer it by incorporating disperse dyes, changing colors as well as physical properties. In addition, we demonstrate an electric circuit switch using a patterned hydrogel. Anisotropic shape change of the polyelectrolyte switch closes an open circuit and lights a light-emitting diode in red. This proposed fabrication and engineering can be expanded to other superabsorbent systems and create smart responses in cross-linked systems for biomedical or environmental applications.
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spelling pubmed-66414352019-08-27 Rapid Accessible Fabrication and Engineering of Bilayered Hydrogels: Revisiting the Cross-Linking Effect on Superabsorbent Poly(acrylic acid) Lee, Kyoung Min Kim, Hea Ji Jung, Doyoung Oh, Yuree Lee, Hyemin Han, Changsun Chang, Ji Young Kim, Hyungwoo ACS Omega [Image: see text] Superabsorbent hydrogels are significant not only in materials science but also in industries and daily life, being used in diapers or soil conditioners as typical examples. The main feature of these materials is their capacity to hold considerable amount of water, which is strongly dependent on the cross-linking density. This study focuses on the preparation of hydrogels by reweighing the effect of cross-linking density on physical properties, which provides green fabrication of bilayered hydrogels that consist of homogeneous structural motifs but show programmed responses via sequential radical polymerization. In particular, when two hydrogel layers containing different cross-linking densities are joined together, an integrated linear bilayer shows heterogeneous deformation triggered by water. We monitor the linear hydrogel bilayer bending into a circle and engineer it by incorporating disperse dyes, changing colors as well as physical properties. In addition, we demonstrate an electric circuit switch using a patterned hydrogel. Anisotropic shape change of the polyelectrolyte switch closes an open circuit and lights a light-emitting diode in red. This proposed fabrication and engineering can be expanded to other superabsorbent systems and create smart responses in cross-linked systems for biomedical or environmental applications. American Chemical Society 2018-03-14 /pmc/articles/PMC6641435/ /pubmed/31458571 http://dx.doi.org/10.1021/acsomega.8b00079 Text en Copyright © 2018 American Chemical Society This is an open access article published under a Creative Commons Attribution (CC-BY) License (http://pubs.acs.org/page/policy/authorchoice_ccby_termsofuse.html) , which permits unrestricted use, distribution and reproduction in any medium, provided the author and source are cited.
spellingShingle Lee, Kyoung Min
Kim, Hea Ji
Jung, Doyoung
Oh, Yuree
Lee, Hyemin
Han, Changsun
Chang, Ji Young
Kim, Hyungwoo
Rapid Accessible Fabrication and Engineering of Bilayered Hydrogels: Revisiting the Cross-Linking Effect on Superabsorbent Poly(acrylic acid)
title Rapid Accessible Fabrication and Engineering of Bilayered Hydrogels: Revisiting the Cross-Linking Effect on Superabsorbent Poly(acrylic acid)
title_full Rapid Accessible Fabrication and Engineering of Bilayered Hydrogels: Revisiting the Cross-Linking Effect on Superabsorbent Poly(acrylic acid)
title_fullStr Rapid Accessible Fabrication and Engineering of Bilayered Hydrogels: Revisiting the Cross-Linking Effect on Superabsorbent Poly(acrylic acid)
title_full_unstemmed Rapid Accessible Fabrication and Engineering of Bilayered Hydrogels: Revisiting the Cross-Linking Effect on Superabsorbent Poly(acrylic acid)
title_short Rapid Accessible Fabrication and Engineering of Bilayered Hydrogels: Revisiting the Cross-Linking Effect on Superabsorbent Poly(acrylic acid)
title_sort rapid accessible fabrication and engineering of bilayered hydrogels: revisiting the cross-linking effect on superabsorbent poly(acrylic acid)
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6641435/
https://www.ncbi.nlm.nih.gov/pubmed/31458571
http://dx.doi.org/10.1021/acsomega.8b00079
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