Internal Damage Evolution in Double-Network Hydrogels Studied by Microelectrode Technique

Guo, Honglei1,3; Hong, Wei3,4,5; Kurokawa, Takayuki1,3; Matsuda, Takahiro2; Wu, Zi Liang1,6; Nakajima, Tasuku1,3,7; Takahata, Masakazu8; Sun, Taolin1,3,9; Rao, Ping2; Gong, Jian Ping1,3,7

2019-09-24

10.1021/acs.macromol.9b01308

MACROMOLECULES   影响因子和分区

0024-9297

1520-5835

Double-network (DN) hydrogels have attracted considerable attention owing to their unique mechanism to show extraordinary mechanical strength and toughness. Although the toughening mechanism of the DN gels, breaking of the relatively stiff and brittle first network as sacrificial bonds, is widely accepted, the microstructure and morphology evolution of the internal damage have hardly been revealed. In this study, we study the internal structures of the first network in partially damaged DN gels by using the microelectrode technique (MET) based on the Donnan effect of the polyelectrolyte first network. We measure the spatial distribution of the electric potential of the prestretched and then reswelled DN gels. From the anisotropic depth profiles of potential and reswelling ratio, the microstructures of DN gels at a scale larger than the microelectrode probe size (similar to 200 nm) are revealed at the preyielding, yielding, and strain-hardening regimes.

SCI ; EI

英语

NI论文

其他

JSPS KAKENHI[JP17H06144] ; JSPS KAKENHI[17H06376]

Polymer Science

Polymer Science

WOS:000487859700031

AMER CHEMICAL SOC

20194007494013

Electric potential ; Hydrogels ; Microelectrodes ; Microstructure ; Morphology ; Polyelectrolytes ; Strain hardening

Heat Treatment Processes:537.1 ; Electricity: Basic Concepts and Phenomena:701.1 ; Chemical Products Generally:804 ; Organic Polymers:815.1.1 ; Materials Science:951

CHEMISTRY

Web of Science

1.Hokkaido Univ, Fac Adv Life Sci, Sapporo, Hokkaido 0600810, Japan
2.Hokkaido Univ, Grad Sch Life Sci, Sapporo, Hokkaido 0010021, Japan
3.Hokkaido Univ, Soft Matter GI CoRE, Sapporo, Hokkaido 0010021, Japan
4.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Shenzhen 518055, Peoples R China
5.Iowa State Univ, Dept Aerosp Engn, Ames, IA 50011 USA
6.Zhejiang Univ, Key Lab Macromol Synth & Functionalizat, Dept Polymer Sci & Engn, Minist Educ, Hangzhou 310027, Zhejiang, Peoples R China
7.Hokkaido Univ, Inst Chem React Design & Discovery WPI ICReDD, Kita Ku, N21W10, Sapporo, Hokkaido 0010021, Japan
8.Hokkaido Univ, Fac Sci, Sapporo, Hokkaido 0600810, Japan
9.South China Univ Technol, South China Adv Inst Soft Matter Sci & Technol, Guangzhou 510640, Guangdong, Peoples R China

Guo, Honglei,Hong, Wei,Kurokawa, Takayuki,et al. Internal Damage Evolution in Double-Network Hydrogels Studied by Microelectrode Technique[J]. MACROMOLECULES,2019,52(18):7114-7122.

Guo, Honglei.,Hong, Wei.,Kurokawa, Takayuki.,Matsuda, Takahiro.,Wu, Zi Liang.,...&Gong, Jian Ping.(2019).Internal Damage Evolution in Double-Network Hydrogels Studied by Microelectrode Technique.MACROMOLECULES,52(18),7114-7122.

Guo, Honglei,et al."Internal Damage Evolution in Double-Network Hydrogels Studied by Microelectrode Technique".MACROMOLECULES 52.18(2019):7114-7122.