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Combinational Hydrogel and Xerogel Actuators Showing NIR Manipulating Complex Actions
Author(s) -
Yang Shurui,
Zhang Yuancheng,
Zhang Chao,
Wang Tao,
Sun Weixiang,
Tong Zhen
Publication year - 2019
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201900270
Subject(s) - self healing hydrogels , materials science , actuator , monomer , polymerization , graphene , chemical engineering , irradiation , oxide , photothermal therapy , nanotechnology , computer science , composite material , polymer chemistry , polymer , artificial intelligence , engineering , physics , nuclear physics , metallurgy
Near‐infrared (NIR)‐driven shape memory hydrogels are synthesized with a one‐pot polymerization of N , N ‐dimethylacrylamide in the inorganic clay and graphene oxide (GO) suspension. The hydrogel consists of only a physically crosslinked network, which is partially thermoreversible. With the efficient photothermal energy transformation of GO in the hydrogels, the shape recovery from the temporal shape is achieved by NIR irradiation. The optimal shape fixing percentage and recovery rate are found at moderate monomer and crosslinker contents. Meanwhile, the xerogel dried from the hydrogel also shows a fast NIR response shape change. The NIR manipulating combinational hydrogel–xerogel actuators are prepared by combining the wet and soft hydrogel and its dry and rigid xerogel together. The actuators achieve complex actions of turning and lifting under sequential NIR irradiation to carry an object up‐ and downward and around obstacles, or to transfer an object to a target position. This work provides a new idea for designing combinational actuators to fulfil complex actions.