Light-driven shape-programmable MXene composite hydrogel driver and preparation method thereof

A hydrogel-actuated and light-driven technology, applied in the field of intelligent soft robots, achieves the effects of achieving experimental conditions, superior light energy-mechanical energy conversion capabilities, and simple experimental methods

Active Publication Date: 2021-06-29
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Conventional hydrogel actuators with homogeneous and isotropic microstructures can only produce simple isotropic contraction and expansion under uniform external stimuli

Method used

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  • Light-driven shape-programmable MXene composite hydrogel driver and preparation method thereof
  • Light-driven shape-programmable MXene composite hydrogel driver and preparation method thereof
  • Light-driven shape-programmable MXene composite hydrogel driver and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Poly(N-isopropylacrylamide) (PNIPAm) precursor solution consists of 400 mg NIPAm monomer, 20 mg N,N'-methylbisacrylamide, 5 μL of photoinitiator 2-hydroxy-2-methylpropiophenone (Darocur 1173), 10mg of MXene nano-monomer mixed with 1mL deionized water. Subsequently, the above poly(N-isopropylacrylamide) (PNIPAm) precursor solution was injected into a glass mold (40mL × 40mL × 1mL), in the structure of the glass mold, both the top and bottom layers were provided with ITO transparent electrodes, the height Silicone pads are set in the direction to insulate the top layer and the bottom layer, that is, the upper and lower ITO glasses are used to connect the positive and negative electrodes of the external power supply respectively, so as to realize the poly(N-isopropylacrylamide) (PNIPAm) in the glass mold. ) The electric field effect of the precursor solution. Apply 2V mm between top ITO glass and bottom ITO glass -1 DC electric field for 10min, after removing the electri...

Embodiment 2

[0040] Poly(N-isopropylacrylamide) (PNIPAm) precursor solution consists of 400 mg NIPAm monomer, 20 mg N,N'-methylbisacrylamide, 5 μL of photoinitiator 2-hydroxy-2-methylpropiophenone (Darocur 1173), 10mg of MXene nano-monomer mixed with 1mL deionized water. Using the reaction vessel in Example 1, in the structure of the glass mold, ITO transparent electrodes are provided on the top layer and the bottom layer, and silica gel pads are arranged on the height direction to insulate between the top layer and the bottom layer, that is, using two pieces of ITO glass up and down The positive and negative poles of the external power supply are respectively connected to realize the electric field action on the poly(N-isopropylacrylamide) (PNIPAm) precursor solution in the glass mould. The poly(N-isopropylacrylamide) (PNIPAm) precursor solution was injected into the mold assembled by ITO glass and silica gel through a syringe, and 2V mm was applied. -1 DC electric field for 10min, after...

Embodiment 3

[0042] The poly(N-isopropylacrylamide) (PNIPAm) precursor solution was composed of 400 mg NIPAm monomer, 20 mg N,N,N'-methylbisacrylamide, 5 μL of photoinitiator 2-hydroxy-2-methylpropane Benzophenone (Darocur 1173), 10 mg of MXene nanomonomer and 1 mL of deionized water were mixed. Using the reaction vessel in Example 1, in the structure of the glass mold, ITO transparent electrodes are provided on the top layer and the bottom layer, and silica gel pads are arranged on the height direction to insulate between the top layer and the bottom layer, that is, using two pieces of ITO glass up and down The positive and negative poles of the external power supply are respectively connected to realize the electric field action on the poly(N-isopropylacrylamide) (PNIPAm) precursor solution in the glass mould. The poly(N-isopropylacrylamide) (PNIPAm) precursor solution was injected into the mold assembled by ITO glass and silica gel through a syringe, and 2V mm was applied. -1 DC electr...

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Abstract

The invention discloses a light-driven shape-programmable MXene composite hydrogel driver and a preparation method thereof. The light-driven shape-programmable MXene composite hydrogel driver is formed by copolymerization of a polymerizable MXene nano monomer and thermosensitive PNIPAM hydrogel in-situ free radicals. The distribution of MXene and the anisotropy of a hydrogel network can be controlled by utilizing a low electric field, so that various biologically excited programmable anisotropic hydrogel drivers are developed by controlling an ITO electrode pattern, a direct-current electric field direction and mask-assisted ultraviolet polymerization. The invention provides a new development insight of a programmable and reconfigurable intelligent driver, and the intelligent driver can have application prospects in various fields.

Description

technical field [0001] The invention relates to the technical field of intelligent soft robots, in particular to a light-driven shape-programmable MXene composite hydrogel driver and a preparation method thereof. Background technique [0002] Intelligent drives capable of generating force or motion in response to external stimuli are ubiquitous in living organisms and biological systems. For example, human behavior is usually triggered by nerve signals with longitudinally arranged cylindrical muscle fibers of skeletal muscle, and then the contraction generates mechanical force to drive the formation. Many plants (such as pine cones) open and close in a humid environment, mainly through water absorption and dehydration of cells or tissues with anisotropically oriented cellulose fibrils. Therefore, structural anisotropy plays an important role in force generation and large-scale transport in biological systems. Drawing inspiration from nature, extensive efforts have been dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F292/00C08F220/54C08F222/38C08F2/48C08F2/00
CPCC08F292/00C08F2/48C08F2/00C08F220/54C08F222/385
Inventor 王玲雪盼许鑫华
Owner TIANJIN UNIV
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