Publication detail

Simultaneously Toughening and Stiffening Elastomers with Octuple Hydrogen Bonding

Zhuo Y., Xia Z., Yuan Qi, Sumigawa T., Wu J., Šesták P., Lu Y., Håkonsen V., Li T., Wang F., Chen W., Xiao S., Long R., Kitamura T., Li L., He J., Zhang Z.

Original Title

Simultaneously Toughening and Stiffening Elastomers with Octuple Hydrogen Bonding

Type

journal article in Web of Science

Language

English

Original Abstract

Current synthetic elastomers suffer from the well-known trade-off between toughness and stiffness. By a combination of multiscale experiments and atomistic simulations, a transparent unfilled elastomer with simultaneously enhanced toughness and stiffness is demonstrated. The designed elastomer comprises homogeneous networks with ultrastrong, reversible, and sacrificial octuple hydrogen bonding (HB), which evenly distribute the stress to each polymer chain during loading, thus enhancing stretchability and delaying fracture. Strong HBs and corresponding nanodomains enhance the stiffness by restricting the network mobility, and at the same time improve the toughness by dissipating energy during the transformation between different configurations. In addition, the stiffness mismatch between the hard HB domain and the soft poly(dimethylsiloxane)-rich phase promotes crack deflection and branching, which can further dissipate energy and alleviate local stress. These cooperative mechanisms endow the elastomer with both high fracture toughness (17016 J m(-2)) and high Young's modulus (14.7 MPa), circumventing the trade-off between toughness and stiffness. This work is expected to impact many fields of engineering requiring elastomers with unprecedented mechanical performance.

Keywords

elastomers; fracture toughness; octuple hydrogen bonding; stiffness; toughening mechanisms

Authors

Zhuo Y., Xia Z., Yuan Qi, Sumigawa T., Wu J., Šesták P., Lu Y., Håkonsen V., Li T., Wang F., Chen W., Xiao S., Long R., Kitamura T., Li L., He J., Zhang Z.

Released

3. 5. 2021

Publisher

WILEY-V C H VERLAG GMBH

Location

WEINHEIM

ISBN

1521-4095

Periodical

ADVANCED MATERIALS

Year of study

17

Number

33

State

Federal Republic of Germany

Pages from

1

Pages to

9

Pages count

9

URL

https://onlinelibrary.wiley.com/doi/full/10.1002/adma.202008523

BibTex

@article{BUT171416,
  author="Petr {Šesták} and Jianyang {Wu} and Senbo {Xiao} and Jianying {He} and Zhiliang {Zhang}",
  title="Simultaneously Toughening and Stiffening Elastomers with Octuple Hydrogen Bonding",
  journal="ADVANCED MATERIALS",
  year="2021",
  volume="17",
  number="33",
  pages="1--9",
  doi="10.1002/adma.202008523",
  issn="1521-4095",
  url="https://onlinelibrary.wiley.com/doi/full/10.1002/adma.202008523"
}