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Deformable intelligent hydrogel robot and preparation method thereof

A hydrogel and robotic technology, applied in the field of robotics, can solve the problems of poor environmental adaptability and poor flexibility, and achieve the effect of broad application prospects and excellent movement flexibility

Active Publication Date: 2021-03-12
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the existing surface swimming robots are traditional rigid robots with complex structures, usually powered by batteries. Although they have high power, fast movement speed and large load, they also have poor flexibility and poor environmental adaptability. Disadvantages that it is difficult to work in complex environments such as acidic or alkaline liquid surfaces, narrow spaces, or channels with complex changes in shape

Method used

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  • Deformable intelligent hydrogel robot and preparation method thereof
  • Deformable intelligent hydrogel robot and preparation method thereof

Examples

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preparation example Construction

[0029] The present invention provides a preparation method for the intelligent hydrogel robot described in the above technical solution, comprising the following steps:

[0030] Mix hydroxyethyl methacrylate and a monomer containing a stimuli-responsive functional group, then add a crosslinking agent and a photoinitiator in sequence to obtain a precursor solution, and irradiate the precursor solution to obtain a deformable intelligent hydrogel robot.

[0031] In the present invention, unless otherwise specified, the required preparation materials are commercially available products well known to those skilled in the art.

[0032] The invention fully mixes and dissolves the hydroxyethyl methacrylate and the monomer containing the stimuli-responsive functional group to form a monomer mixed liquid. In the present invention, when the monomer containing the stimuli-responsive functional group is acrylic acid, the smart hydrogel responds to pH stimuli. When the monomer containing s...

Embodiment 1

[0041] Preparation of stimuli-responsive smart hydrogel precursor: mix hydroxyethyl methacrylate and 0.2g / ml N-isopropylacrylamide at a volume ratio of 1:1 to form a monomer mixture, and then add a cross-linking agent Ethylene glycol dimethacrylate, the volume ratio of crosslinking agent and monomer mixed solution is 1:40; Then add photoinitiator 2-hydroxyl-2-methyl propiophenone, the volume ratio of all the other monomer mixed solutions is 1:10, shading and passing high-purity nitrogen for 5 minutes to obtain the prepared precursor solution.

[0042] Mold making: Use AutoCAD software to model the mold in 3D, and save the modeling file in dwg. format; import the modeling file in dwg. format into the laser cutting machine, laser cut the acrylic sheet, and make an acrylic punch with the protrusion as the edge A regular five-pointed star with a length of 2 cm and a height of 2 mm; on the acrylic punch, use a PDMS molding process to manufacture a PDMS mold.

[0043] Production of d...

Embodiment 2

[0046] According to the scheme described in Example 1, the only difference is that the added substance containing stimuli-responsive functional groups is acrylic acid, the obtained smart hydrogel is pH-stimulus-responsive, and the volume ratio of hydroxyethyl methacrylate to acrylic acid is 2 :1. The pH stimulus is applied by adding alkaline substances near the swimming soft robot.

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Abstract

The invention belongs to the technical field of robots, and particularly relates to a deformable intelligent hydrogel robot and a preparation method thereof. The deformable intelligent hydrogel robotis composed of stimulus-responsive intelligent hydrogel formed by hydroxyethyl methacrylate and a monomer containing a stimulus-responsive functional group through photo-induced polymerization. when stimulation response intelligent hydrogel is released to the surface of water, due to the fact that the surface tension gradient can be generated in the water absorption process, autonomous swimming ofthe hydrogel is achieved, and the shape of the swimming soft robot made of the stimulation response intelligent hydrogel can be changed under different external stimulations, which can change the movement mode and track. According to the invention, the robot can be made into various shapes of swimming robots capable of autonomously moving on the water surface, can have excellent movement flexibility and compatibility with complex environments through shape change, and has wide application prospects in the aspects of medical treatment and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of robots, and in particular relates to a deformable intelligent hydrogel robot and a preparation method thereof. Background technique [0002] Hydrogel is a three-dimensional network structure formed by cross-linking functional polymers, which has the advantages of large water content, softness, and good life compatibility. Responsive hydrogels refer to smart hydrogels that make corresponding physical or chemical structural changes in response to changes in the external environment. Because it can deform with the change of the external environment, it can be used as an intelligent driving material in the fields of soft robot driving and so on. [0003] Most of the existing surface swimming robots are traditional rigid robots with complex structures, usually powered by batteries. Although they have high power, fast movement speed and large load, they also have poor flexibility and poor environmental adaptab...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/20C08F220/54C08F222/14C08F220/06C08F220/58C08F2/48C08F2/44C08J3/075C08K5/23C08L33/14C08L33/24
CPCC08F220/20C08F220/54C08F2/48C08F2/44C08J3/075C08K5/23C08J2333/14C08J2333/24C08F222/102C08F220/06C08F220/585
Inventor 梅永丰朱红
Owner FUDAN UNIV
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