Detail publikace

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.

Originální název

Simultaneously Toughening and Stiffening Elastomers with Octuple Hydrogen Bonding

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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.

Vydáno

3. 5. 2021

Nakladatel

WILEY-V C H VERLAG GMBH

Místo

WEINHEIM

ISSN

1521-4095

Periodikum

ADVANCED MATERIALS

Ročník

17

Číslo

33

Stát

Spolková republika Německo

Strany od

1

Strany do

9

Strany počet

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"
}