[Adv. Funct. Mater.] A multi-responsive anisotropic hydrogel with macroscopic three-dimensional complex deformations
作者：Chunxin Ma, Xiaoxia Le, XL Tang, J He, P Xiao, J Zheng, W Lu, Jiawei Zhang,* YJ Huang, Tao Chen*
關鍵字：anisotropic hydrogels, multi-responsive, 3D complex deformations, UV-reduced graphene oxide
論文來源：期刊
具體來源：Adv. Funct. Mater., 2016, 26, 8670-8676
發表時間：2016年
As one of the most
promising smart materials, stimuli-responsive polymer hydrogels (SPHs) can
reversibly change the volume or shapes in response to external stimuli, they
thus have shown promising applications in many fields. While considerable progress
of two-dimensional (2D) deformation of SPHs has been achieved, the realization
of three-dimensional (3D) or even more complex deformation still remains a significant
challenge. Herein, we report a general strategy towards designing
multi-responsive macroscopically anisotropic SPHs (MA-SPHs) with the ability of
3D complex deformations. Through a local UV-reduction of GOs with a patterned
fashion in the GO-poly(N-isopropylacrylamide)
(GO-PNIPAM) composite hydrogel sheet, MA-SPHs could be achieved after the
introduction of a second poly(methylacrylic acid) (PMAA) network in the
unreduced part of GO-PNIPAM hydrogel sheet. The resulted 3D MA-SPHs can provide
remote-controllable light-driven, as well as thermo, pH and ionic
strength (IS)
triggered multi-responsive 3D complex deformations. Our approaches may provide
some new insights in designing and fabricating of intelligent soft materials
for bio-inspired applications.