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Modification of Hydrophobic Hydrogels into a Strongly Adhesive and Tough Hydrogel by Electrostatic Interaction
Huang, Guang1; Tang, Zhuofu1; Peng, Shuaiwei1; Zhang, Ping2; Sun, Taolin3; Wei, Wentao1; Zeng, Liangpeng1; Guo, Honglei1; Guo, Hui1; Meng, Guozhe1
2022-01-11
Source PublicationMacromolecules
ISSN0024-9297
Volume55Issue:1Pages:156-165
Abstract

Synthetic hydrogels with hydrophobic interactions, which show excellent mechanical performance and good anti-swelling ability in saltwater, have great potential in various industries, such as soft robots, 3D printing, and wearable sensors. Normally, hydrophobic molecules inside a hydrophobic hydrogel tend to aggregate to form a large hydrophobic domain, leading to a phase separation phenomenon because water is a poor solvent of the hydrophobic domain. This aggregation, however, inhibits the adhesion of the hydrophobic hydrogel to various dry materials and thus limits its application in device and sensor industries. In this study, we report the synthesis of hybrid hydrogels with ionically and hydrophobically cross-linked networks. This novel hybrid hydrogel can strongly adhere to various substrates, such as glass, polypropylene, silicone, wood, and polytetrafluoroethylene, with a maximum adhesion strength measured to be 100 kPa. Meanwhile, this hybrid hydrogel can be stretched beyond 8-10 times of its initial length. We attribute this observed strong adhesion and high toughness properties to the synergy of electrostatic interactions and hydrophobic associations. With the strong adhesion and excellent tensile performance, these hydrogels may serve as a model system to explore the strong adhesion mechanism of hydrophobic hydrogels and expand the scope of hydrogel applications.

DOI10.1021/acs.macromol.1c01115
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
WOS IDWOS:000736487500001
Scopus ID2-s2.0-85122398421
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Cited Times [WOS]:12   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorGuo, Honglei; Guo, Hui
Affiliation1.School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082, China
2.Faculty of Science and Technology, University of Macau, Taipa, E11, Avenida da Universidade, 999078, Macao
3.South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology, Guangzhou, 510640, China
Recommended Citation
GB/T 7714
Huang, Guang,Tang, Zhuofu,Peng, Shuaiwei,et al. Modification of Hydrophobic Hydrogels into a Strongly Adhesive and Tough Hydrogel by Electrostatic Interaction[J]. Macromolecules,2022,55(1):156-165.
APA Huang, Guang,Tang, Zhuofu,Peng, Shuaiwei,Zhang, Ping,Sun, Taolin,Wei, Wentao,Zeng, Liangpeng,Guo, Honglei,Guo, Hui,&Meng, Guozhe.(2022).Modification of Hydrophobic Hydrogels into a Strongly Adhesive and Tough Hydrogel by Electrostatic Interaction.Macromolecules,55(1),156-165.
MLA Huang, Guang,et al."Modification of Hydrophobic Hydrogels into a Strongly Adhesive and Tough Hydrogel by Electrostatic Interaction".Macromolecules 55.1(2022):156-165.
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