Tough Bonding of Hydrogels to Diverse Nonporous Surfaces

By Hyunwoo Yuk, Teng Zhang, Shaoting Lin, G. Parada, Xuanhe Zhao. Nature Materials, 2015

1,008 citations recorded by the source corpus.

In many animals, the bonding of tendon and cartilage to bone is extremely tough (for example, interfacial toughness ∼800 J m(-2); refs ,), yet such tough interfaces have not been achieved between synthetic hydrogels and non-porous surfaces of engineered solids. Here, we report a strategy to design tough transparent and conductive bonding of synthetic hydrogels containing 90% water to non-porous surfaces of diverse solids, including glass, silicon, ceramics, titanium and aluminium. The design strategy is to anchor the long-chain polymer networks of tough hydrogels covalently to non-porous solid surfaces, which can be achieved by the silanation of such surfaces. Compared with physical interactions, the chemical anchorage results in a higher intrinsic work of adhesion and in significant energy dissipation of bulk hydrogel during detachment, which lead to interfacial toughness values over 1,000 J m(-2). We also demonstrate applications of robust hydrogel-solid hybrids, including hydrogel superglues, mechanically protective hydrogel coatings, hydrogel joints for robotic structures and robust hydrogel-metal conductors.

Subfields: Biomaterials, Biomedical Engineering, Ecology, Evolution, Behavior and Systematics

View Paper: https://www.semanticscholar.org/paper/aee1300b5c4838711139c6ddffb9e0d6cca79345

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In Biomaterials

  1. Zhigang Suo
  2. Hyunwoo Yuk
  3. Shaoting Lin
  4. Yu Shrike Zhang
  5. Ali Khademhosseini
  6. Jingda Tang
  7. Xuanhe Zhao
  8. Jian Hu

In Biomedical Engineering

  1. Zhong Lin Wang
  2. Xuanhe Zhao
  3. Zhigang Suo
  4. Hyunwoo Yuk
  5. Xiangyu Chen
  6. Tongqing Lu
  7. Shaoting Lin
  8. Xiong Pu

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