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Effect of first network topology on the toughness of double network hydrogels

Journal Article


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Abstract


  • The fracture toughness of a double network (DN) hydrogel is shown here to be directly proportional to the toughness of the first-formed network. A series of DN gels was prepared in which the cross-link density of the first (tighter) network was controlled by varying the monomer and cross-linker concentrations. The toughness, tensile strength and elastic modulus of the DN gels increased significantly with an increase in the cross-link density of the first network and with identically prepared second networks. Moreover, the toughness of the double network was found to be linearly related to the toughness of the first network with an amplification factor of 150 times. Existing models of DN fracture based on network strand scission are utilized to quantify the relationship between the first network toughness and the DN toughness.

UOW Authors


  •   Xin, Hai (external author)
  •   Saricilar, Sureyya Zengin (external author)
  •   Brown, Hugh (external author)
  •   Whitten, Philip G. (external author)
  •   Spinks, Geoff M.

Publication Date


  • 2013

Citation


  • Xin, H., Saricilar, S. Zengin., Brown, H. R., Whitten, P. G. & Spinks, G. M. (2013). Effect of first network topology on the toughness of double network hydrogels. Macromolecules, 46 (16), 6613-6620.

Scopus Eid


  • 2-s2.0-84883228887

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2325&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1316

Number Of Pages


  • 7

Start Page


  • 6613

End Page


  • 6620

Volume


  • 46

Issue


  • 16

Abstract


  • The fracture toughness of a double network (DN) hydrogel is shown here to be directly proportional to the toughness of the first-formed network. A series of DN gels was prepared in which the cross-link density of the first (tighter) network was controlled by varying the monomer and cross-linker concentrations. The toughness, tensile strength and elastic modulus of the DN gels increased significantly with an increase in the cross-link density of the first network and with identically prepared second networks. Moreover, the toughness of the double network was found to be linearly related to the toughness of the first network with an amplification factor of 150 times. Existing models of DN fracture based on network strand scission are utilized to quantify the relationship between the first network toughness and the DN toughness.

UOW Authors


  •   Xin, Hai (external author)
  •   Saricilar, Sureyya Zengin (external author)
  •   Brown, Hugh (external author)
  •   Whitten, Philip G. (external author)
  •   Spinks, Geoff M.

Publication Date


  • 2013

Citation


  • Xin, H., Saricilar, S. Zengin., Brown, H. R., Whitten, P. G. & Spinks, G. M. (2013). Effect of first network topology on the toughness of double network hydrogels. Macromolecules, 46 (16), 6613-6620.

Scopus Eid


  • 2-s2.0-84883228887

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2325&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1316

Number Of Pages


  • 7

Start Page


  • 6613

End Page


  • 6620

Volume


  • 46

Issue


  • 16