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A gradient Laponite-crosslinked nanocomposite hydrogel with anisotropic stress and thermo-response
AbstractA gradient Laponite (Lap)-crosslinked nanocomposite (NC) hydrogel was fabricated by a facile electrophoresis method based on colloidal property of Lap, as well as interaction between Lap and thermo-responsive monomers. TGA, FTIR, SEM and TEM were used to characterize the gradient structure. The gradient NC hydrogel exhibited both gradient distribution of Lap and thermo-responsive polymers under the induction of direct current electric field (DC-EF). The gradient NC hydrogel showed anisotropic mechanical properties and gradient thermo-response along the direction of DC-EF. The mechanical strength of the gradient NC hydrogel increased by 38% compared with isotropic NC hydrogel. An increase in Lap content would improve the mechanical property and extend the strength range in different locations of the gradient hydrogel. Meanwhile, the compressive strength of the gradient NC hydrogels can also be adjusted in the range of 117–1774kPa by changing the concentration of Lap. The work enabled the gradient NC hydrogels to apply in the field of tissue engineering and provided a new insight into development of novel bionic materials.
Graphical abstractElectric field-induced gradient distribution of Laponite and polymers, taking advantage of colloidal property of Laponie(Lap), as well as interaction between Lap and thermo-responsive monomers, led to anisotropic mechanical property and gradient thermo-response of the nanocomposite hydrogel. An increase in Lap content would improve the comprehensive mechanical property and extend the strength range in different locations of the gradient hydrogel.
HighlightsA gradient Laponite-crosslinked nanocomposite hydrogel is prepared.Interaction between monomers and Laponite led to gradient polymer distribution.The hydrogel exhibits anisotropic mechanical properties and thermo-response.Compressive strength of hydrogels can be adjusted in the range of 117–1774kPa.
A gradient Laponite-crosslinked nanocomposite hydrogel with anisotropic stress and thermo-response
AbstractA gradient Laponite (Lap)-crosslinked nanocomposite (NC) hydrogel was fabricated by a facile electrophoresis method based on colloidal property of Lap, as well as interaction between Lap and thermo-responsive monomers. TGA, FTIR, SEM and TEM were used to characterize the gradient structure. The gradient NC hydrogel exhibited both gradient distribution of Lap and thermo-responsive polymers under the induction of direct current electric field (DC-EF). The gradient NC hydrogel showed anisotropic mechanical properties and gradient thermo-response along the direction of DC-EF. The mechanical strength of the gradient NC hydrogel increased by 38% compared with isotropic NC hydrogel. An increase in Lap content would improve the mechanical property and extend the strength range in different locations of the gradient hydrogel. Meanwhile, the compressive strength of the gradient NC hydrogels can also be adjusted in the range of 117–1774kPa by changing the concentration of Lap. The work enabled the gradient NC hydrogels to apply in the field of tissue engineering and provided a new insight into development of novel bionic materials.
Graphical abstractElectric field-induced gradient distribution of Laponite and polymers, taking advantage of colloidal property of Laponie(Lap), as well as interaction between Lap and thermo-responsive monomers, led to anisotropic mechanical property and gradient thermo-response of the nanocomposite hydrogel. An increase in Lap content would improve the comprehensive mechanical property and extend the strength range in different locations of the gradient hydrogel.
HighlightsA gradient Laponite-crosslinked nanocomposite hydrogel is prepared.Interaction between monomers and Laponite led to gradient polymer distribution.The hydrogel exhibits anisotropic mechanical properties and thermo-response.Compressive strength of hydrogels can be adjusted in the range of 117–1774kPa.
A gradient Laponite-crosslinked nanocomposite hydrogel with anisotropic stress and thermo-response
Tan, Yun (author) / Xu, Shimei (author) / Wu, Ronglan (author) / Du, Juan (author) / Sang, Jilong (author) / Wang, Jide (author)
Applied Clay Science ; 148 ; 77-82
2017-08-04
6 pages
Article (Journal)
Electronic Resource
English
A gradient Laponite-crosslinked nanocomposite hydrogel with anisotropic stress and thermo-response
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