Tao Lin Sun
South China University of Technology
Self-healing hydrogelsUltimate tensile strengthDissipationDeformation (engineering)PolyelectrolyteCopolymerComposite materialMonomerNanotechnologyCationic polymerizationViscoelasticityPolymer chemistryMaterials scienceIonic bondingBiocompatibilitySelf-healingSwellingChemical engineeringFracture (geology)Phase (matter)PolymerFracture mechanicsToughness
53Publications
24H-index
2,689Citations
Publications 43
Newest
#1Hui Jie Zhang (Shaanxi University of Science and Technology)H-Index: 7
#2Xinyi Wang (Shaanxi University of Science and Technology)H-Index: 1
Last. Xiangyu You (Shaanxi University of Science and Technology)H-Index: 1
view all 7 authors...
Biopolymer-based functional hydrogels with excellent mechanical properties are desired, but their fabrication remains a challenge. Learning from the tofu-making process, we developed a freely formable hydrogel with high toughness and stiffness from the hydrogen bond-rich coacervation of tannic acid and gelatin through a simple hot-pressing process that transforms the coacervate particles into a bulk hydrogel. The mechanical properties of the obtained gelatin/tannic acid hydrogel (G/T gel) can be...
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#1Cong DuH-Index: 6
#2Xin Ning ZhangH-Index: 8
Last. Zi Liang WuH-Index: 36
view all 6 authors...
Forming robust associative interactions has been an effective strategy for the design of tough hydrogels. However, the role of associative interactions in the dynamics of hydrogels still remains el...
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#1Xueyu Li (Hokkaido University)H-Index: 5
#2Kunpeng Cui (Hokkaido University)H-Index: 22
Last. Jian Ping Gong (Hokkaido University)H-Index: 81
view all 8 authors...
We investigate the fatigue resistance of chemically cross-linked polyampholyte hydrogels with a hierarchical structure due to phase separation and find that the details of the structure, as characterized by SAXS, control the mechanisms of crack propagation. When gels exhibit a strong phase contrast and a low cross-linking level, the stress singularity around the crack tip is gradually eliminated with increasing fatigue cycles and this suppresses crack growth, beneficial for high fatigue resistan...
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#1Haiyan Yin (CAS: Chinese Academy of Sciences)H-Index: 3
#2Daniel R. King (Hokkaido University)H-Index: 17
Last. Jian Ping Gong (Hokkaido University)H-Index: 81
view all 7 authors...
The high water content of hydrogels makes them important as synthetic biomaterials, and tuning the mechanical properties of hydrogels to match those of natural tissues without changing chemistry is...
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#1Wei Cui (Hokkaido University)H-Index: 7
#2Daniel R. King (Hokkaido University)H-Index: 17
Last. Jian Ping Gong (Hokkaido University)H-Index: 81
view all 10 authors...
Soft fiber-reinforced polymers (FRPs), consisting of rubbery matrices and rigid fabrics, are widely utilized in industry because they possess high specific strength in tension while allowing flexural deformation under bending or twisting. Nevertheless, existing soft FRPs are relatively weak against crack propagation due to interfacial delamination, which substantially increases their risk of failure during use. In this work, a class of soft FRPs that possess high specific strength while simultan...
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#1Kunpeng Cui (Hokkaido University)H-Index: 22
#2Ya Nan Ye (Hokkaido University)H-Index: 7
Last. Jian Ping Gong (Hokkaido University)H-Index: 81
view all 7 authors...
Polyampholyte hydrogels (PA gels) are drawing great attention for their excellent mechanical properties including self-healing, high toughness, and fatigue resistance. These mechanical performances...
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#1Xueyu Li (Hokkaido University)H-Index: 5
#2Kunpeng Cui (Hokkaido University)H-Index: 22
Last. Jian Ping Gong (Hokkaido University)H-Index: 81
view all 9 authors...
Load-bearing biological tissues, such as muscles, are highly fatigue-resistant, but how the exquisite hierarchical structures of biological tissues contribute to their excellent fatigue resistance is not well understood. In this work, we study antifatigue properties of soft materials with hierarchical structures using polyampholyte hydrogels (PA gels) as a simple model system. PA gels are tough and self-healing, consisting of reversible ionic bonds at the 1-nm scale, a cross-linked polymer netwo...
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#1Tao Lin Sun (SCUT: South China University of Technology)H-Index: 24
#2Kunpeng Cui (Hokkaido University)H-Index: 22
Polyampholyte (PA) hydrogels have attracted great attention as an innovative material having tough, self-healing, and viscoelastic behavior. PA hydrogels are synthesized using one-step radical polymerization of equal amounts of oppositely charged ionic monomers at a very high monomer concentration. They have 50–70 wt% of water at an equilibrium state, much lower than that of conventional hydrogels that usually have a high-water content (>80%). They are strongly viscoelastic and have a high tough...
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#1Kunpeng CuiH-Index: 22
#2Ya Nan YeH-Index: 7
Last. Jian Ping GongH-Index: 81
view all 9 authors...
Recent studies reported a multiscale structure in tough and self-healing hydrogels containing physical associations. For example, a type of tough and self-healing hydrogel from charge-balanced polyampholytes (PA) has a mesoscale bicontinuous double network structure with structural length around 400 nm. This mesoscale network structure plays an essential role in the multistep rupture process, which leads to the high toughness of PA hydrogels. In this work, by using an osmotic stress method, we s...
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#1Kohei Murakawa (Hokkaido University)H-Index: 1
#2Daniel R. King (Hokkaido University)H-Index: 17
Last. Jian Ping Gong (Hokkaido University)H-Index: 81
view all 6 authors...
Polyelectrolyte complexation between oppositely charged polyelectrolytes forms coacervates in dilute solutions and thin films in concentrated solutions. It is difficult to obtain macroscopically uniform bulk polyelectrolyte complex (PEC) materials, since the two polymers form insoluble complexes quickly at the contact interface during mixing, resulting in heterogeneous aggregates. Here, we succeeded in preparing bulk PEC materials based on desalting-induced polyelectrolyte complexation via visco...
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