Application of acrylamidoglycylamide-based side-chain hydrogen-bonded copolymerization hydrogels as pH-responsive materials

A technology of acrylamide-glycinamide and hydrogel, which is applied in the application field of pH-responsive materials and can solve the problems of less hydrogel and the like

Inactive Publication Date: 2020-06-12
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, some scholars have prepared hydrogels through the interaction between ions, but there are very few hydrogels prepared by this method.

Method used

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  • Application of acrylamidoglycylamide-based side-chain hydrogen-bonded copolymerization hydrogels as pH-responsive materials
  • Application of acrylamidoglycylamide-based side-chain hydrogen-bonded copolymerization hydrogels as pH-responsive materials
  • Application of acrylamidoglycylamide-based side-chain hydrogen-bonded copolymerization hydrogels as pH-responsive materials

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Embodiment Construction

[0019] The technical solutions of the present invention will be further described below in conjunction with specific embodiments.

[0020] P(NAGA-co-VDT) hydrogel was prepared by radical polymerization with acrylamidoglycylamide (NAGA) and 2,4-diamino-6-vinyltriazine (VDT) monomers. The molecular structure is as follows:

[0021]

[0022] It can be seen that in P(NAGA-co-VDT) hydrogel, double hydrogen bonds can be formed between NAGA components, between VDT ​​components and between NAGA and VDT components. Therefore, a large number of double hydrogen bonds can be formed between polymer molecular chains, and a large number of physical crosslinks between molecules can form a supramolecular structure, which can significantly enhance the mechanical properties of the material. During preparation, an oil phase such as DMSO is usually selected to fully dissolve VDT and NAGA monomers.

[0023]

[0024] Table 1 The ratio and proportion of each component of P(NAGA-co-VDT) gel

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Abstract

The invention discloses an application of acrylamido-glycinamide-based side chain hydrogen bond copolymer hydrogel as a pH response material. Two monomers of acrylamido-glycinamide and 2, 4-diamino-6-vinyltriazine undergo a free radical polymerization reaction to produce acrylamido-glycinamide-based side chain hydrogen bond copolymer hydrogel containing dihydrogen bonds between acrylamido-glycinamide groups, between 2, 4-diamino-6-vinyltriazine groups and between the acrylamido-glycinamide group and the 2, 4-diamino-6-vinyltriazine group on the copolymer hydrogel side chain. The preparation method is easy to operate. The acrylamido-glycinamide-based side chain hydrogen bond copolymer hydrogel can be easily prepared and has the advantages of temperature sensitivity, pH response, high strength and high stability.

Description

technical field [0001] The invention belongs to the field of intelligent polymer hydrogel preparation, and in particular relates to the application of a side chain hydrogen bond copolymerization hydrogel based on acrylamide glycinamide as a pH responsive material. Background technique [0002] Polymer hydrogel is composed of network cross-linked polymer molecular chains, contains a large amount of water, has good biocompatibility, and is widely used in biomedicine, microscopic controllers, industrial and agricultural production and other fields. [0003] According to the stimulus responsiveness to the external environment, it can be divided into traditional hydrogels and smart hydrogels. Traditional hydrogels have the disadvantages of almost no response to external stimuli (temperature, pH, light, magnetism, etc.), poor mechanical properties, and poor biocompatibility. The smart hydrogel can respond to external environmental stimuli and change in volume and performance. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/60C08F226/06C08F2/06
CPCC08F2/06C08F220/60C08F220/603C08F226/06
Inventor 刘文广王庆
Owner TIANJIN UNIV
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