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A kind of hydrogel surface patterning material and preparation method and application thereof

A surface patterning and hydrogel technology, which is applied in the field of hydrogel surface patterning materials and its preparation, can solve the problems of large pattern randomness, difficult control of hydrogel swelling performance and osmotic pressure, and accuracy defects

Active Publication Date: 2020-03-31
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Hydrogel surface patterning was first used in the bilayer hydrogel system to generate surface patterns through the transverse compressive stress induced by swelling (Nature, 1987, 325, 796-798), although this method can be successfully used in the hydrogel Patterns are constructed on the surface, but the swelling properties and osmotic pressure of hydrogels are difficult to control, and the patterns constructed are random. It is still a technical problem to realize the controllable construction of patterns on the surface of hydrogels.
[0004] Later, the researchers controlled the degree of crosslinking of the hydrogel through the oxygen resistance effect, and then induced it with a solvent (usually deionized water) (Adv.Funct.Mater., 2009, 19, 3038-3045, Adv. ,23, 3441-3445) to realize the construction of surface patterning. This construction method has realized the controllable patterning to a certain extent, but the accuracy is still a major defect; although the physical mask method developed later can be more direct and precise patterning (Science, 2012, 335, 199-204, J.Am.Chem.Soc, 2013, 135, 4834-4839), but the method is not personalized and flexible enough, and only simple and regular patterns can be achieved construction

Method used

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  • A kind of hydrogel surface patterning material and preparation method and application thereof
  • A kind of hydrogel surface patterning material and preparation method and application thereof
  • A kind of hydrogel surface patterning material and preparation method and application thereof

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preparation example Construction

[0028] The invention provides a method for preparing a hydrogel surface patterned material, comprising the following steps:

[0029] (1) provide hydrogel ink, said hydrogel ink comprises polyethylene glycol diacrylate, methacrylate-β-hydroxyethyl ester, methacrylate-3-sulfonic acid propyl ester potassium salt, aliphatic Polyurethanes, photoinitiators and dyes;

[0030] (2) Printing the hydrogel ink in the step (1) by using the gray-scale recognition light-curing printing technology to obtain the first product of hydrogel printing;

[0031] (3) Soak the hydrogel printing primary product obtained in the step (2) in water, and swell to obtain a hydrogel surface patterned material.

[0032] The present invention provides hydrogel ink, and described hydrogel ink comprises polyethylene glycol diacrylate, methacrylic acid-beta-hydroxyethyl ester, methacrylic acid-3-sulfonic acid propyl ester potassium salt, aliphatic polyurethane , photoinitiators and dyes.

[0033] In parts by ma...

Embodiment 1

[0062] In parts by mass, according to 75 parts of PEGDA, 15 parts of HEMA, 5 parts of SPMA and 5 parts 8413, 0.3 parts of Irgacure819 photoinitiator 0.03 parts of Orasol dye (Orasoldye) to prepare raw materials;

[0063] The raw materials are mixed under the condition of mechanical stirring and synchronous heating, and then the dissolved oxygen in the mixed material is removed by centrifugation to obtain a uniform, clear and transparent hydrogel photocurable ink, which is ready for use; when mixing, the stirring speed is 400r / min, and the heating temperature at 50°C for 2 hours;

[0064] according to figure 1 The method shown is to use a commercial DLP printer (digital surface exposure printer) to print. When printing, design the print pattern through Photoshop; set the exposure time to 30s, the grayscale exposure to 30%, and the exposure pattern to the English alphabet. Print on the stage to prepare two-dimensional hydrogel films.

[0065] Soak the printed primary product...

Embodiment 2

[0067] Test according to the method of Example 1, the difference is that the amount of each component of the hydrogel ink is different, listed in Table 1; the exposure pattern is designed as a printed circuit board, the exposure time is set to 30s, and the grayscale exposure is 45%, to obtain image 3 Patterned material shown. Depend on image 3 It can be seen that this embodiment can also obtain a hydrogel material with a clear surface patterning effect.

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Abstract

The invention belongs to the technical field of functional materials and particularly relates to a hydrogel surface patterning material as well as a preparation method and an application thereof. Thepreparation method comprises the steps as follows: firstly, providing polyethylene glycol, hydroxyethyl methacrylate, potassium sulfopropylmethacrylate, aliphatic polyurethane, a photoinitiator and hydrogel ink of dye; then, performing printing with a gray scale recognition photocuring printing technology to obtain a hydrogel printed primary product; soaking the hydrogel printed primary product inwater for swelling to obtain the hydrogel surface patterning material. Embodiment results indicate that the method can realize any patterning design and preparation of 2D hydrogel films and 3D hydrogel structure surfaces, patterns have multiple characters of large-scale preparation, customization and reversible conversion, and the obtained hydrogel material can be widely applied to fields of cellbehavior research, flexible electrons, soft robots and actuators.

Description

technical field [0001] The invention belongs to the technical field of functional materials, in particular to a hydrogel surface patterned material and its preparation method and application. Background technique [0002] The surface of functional materials can naturally form fine patterns with highly ordered, controllable gradient properties, and complex topological shapes, making them useful in the study of biological cell behavior, intelligent bionic wetting and surface adhesion, flexible electronics and devices, microfluidics, software There are potential applications in robotics and actuators. As an important class of soft materials, hydrogel has rich physical and chemical properties and performance controllability, and plays an important role in the fields of biomedicine and engineering manufacturing. The surface patterning of hydrogel has always been a hot spot of concern for researchers at home and abroad. [0003] Hydrogel surface patterning was first used in the b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J7/02C09D11/101C09D11/107C09D11/30
CPCC08J7/02C09D11/101C09D11/107C09D11/30
Inventor 王晓龙蒋盼闫昌友周峰
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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