Publication detail

Mechanical response of hybrid cross-linked networks to uniaxial deformation: A molecular dynamics model

ŽÍDEK, J. JANČÁŘ, J. MILCHEV, A. VILGIS, T.

Original Title

Type

journal article in Web of Science

Language

English

Original Abstract

Networks combining physical and covalent chemical cross-links can exhibit a large amount of dissipated inelastic energy along with high stretchability during deformation. We present our analysis of the influence of the extent of covalent cross-linking on the inelasticity of hydrogels. Four model networks, which are similar in structure but strongly differ in elasticity, have been studied. The aim was the identification of a key structural factor responsible for observing a hysteresis or an elastic deformation. In the employed molecular dynamics study this factor is derived from the underlying structure of each particular hydrogel network. Several structural characteristics have been investigated like the extent of damage to the network, chains sliding, and the specific properties of load-bearing chains. By means of such a key factor, one can predict the deformation behavior (hysteresis or elasticity) of some material, provided a precise description of its structure exists and it resembles any of the four types of a network. The results can be applied in the design of bio-inspired materials with tailored properties.

Keywords

molecular dynamics, hydrogel, tensile deformation

Authors

ŽÍDEK, J.; JANČÁŘ, J.; MILCHEV, A.; VILGIS, T.

RIV year

2014

Released

10. 12. 2014

Publisher

American Chemical Society

ISBN

0024-9297

Periodical

MACROMOLECULES

Year of study

Number

State

United States of America

Pages from

8795

Pages to

8807

Pages count

BibTex

@article{BUT112210,
  author="Jan {Žídek} and Josef {Jančář} and Andrey {Milchev} and Thomas {Vilgis}",
  title="Mechanical response of hybrid cross-linked networks to uniaxial deformation: A molecular dynamics model",
  journal="MACROMOLECULES",
  year="2014",
  volume="47",
  number="24",
  pages="8795--8807",
  doi="10.1021/ma501504z",
  issn="0024-9297"
}