A composite biomimetic adhesive based on oxidized glutathione and inorganic polymetallic oxygen clusters and its preparation method

A technology of oxidized glutathione and polymetallic oxygen clusters, which is applied in the field of material science to achieve mild conditions, reduce pollution and damage, and increase cohesion

Inactive Publication Date: 2018-08-10
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there are few reports on natural short peptide biomimetic adhesives in the world.

Method used

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  • A composite biomimetic adhesive based on oxidized glutathione and inorganic polymetallic oxygen clusters and its preparation method
  • A composite biomimetic adhesive based on oxidized glutathione and inorganic polymetallic oxygen clusters and its preparation method
  • A composite biomimetic adhesive based on oxidized glutathione and inorganic polymetallic oxygen clusters and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] 1. Preparation of adhesive:

[0026] 1.53g oxidized glutathione (molecular weight is 612.63g / mol) and 4.80g H 3 PW 12 o 40(molecular weight of 2880.05g / mol) were dissolved in 10mL and 2mL of twice distilled water. After the two are completely dissolved to obtain a clear and transparent solution, add 10 mL of the aqueous solution of oxidized glutathione to 2 mL of H under stirring at room temperature. 3 PW 12 o 40 In the aqueous solution, the pH value of the final solution was adjusted to 1 with dilute hydrochloric acid with a mass fraction of 1%. The mixed solution changed from clear to turbid immediately. After stirring for 5 min, the solution was left to stand for 0.5 h. At this time, a bright yellow binder appeared at the bottom of the solution.

[0027] attached figure 1 is oxidized glutathione and H 3 PW 12 o 40 Digital photograph (inset) of longitudinal tension of the formed adhesive and its SEM image. It can be seen from the figure that when the stainl...

Embodiment 2

[0041] As shown in Example 1, other conditions remain unchanged, 4.80g H 3 PW 12 o 40 Change to 3.60g H 4 SiW 12 o 40 (molecular weight is 2878.17g / mol), and the above preparation process of the underwater adhesive is repeated to obtain an adhesive with a continuous three-dimensional pore structure. Then detect oxidized glutathione and H respectively by the step of embodiment 1 4 SiW 12 o 40 Adhesive properties, shear tensile strength, self-healing ability, rheological behavior of the formed underwater adhesive. Adhesive performance test shows that the underwater adhesive has a wide range of bonding ability to artificial solids (such as stainless steel, polyester fiber, polyether ether ketone, polybutadiene latex tube) and natural solids (stone, wood, shells) and other materials . Measurement of oxidized glutathione / H by electronic universal testing machine 4 SiW 12 o 40 The shear tensile strength of the two-component adhesive to stainless steel, glass, polyether e...

Embodiment 3

[0043] As shown in Example 1, other conditions remain unchanged, 4.80g H 3 PW 12 o 40 Change to 2.28g H 4 SiMo 12 o 40 (molecular weight is 1823.40g / mol), repeat the above preparation process of the underwater adhesive to obtain an adhesive with a continuous three-dimensional pore structure. Then detect oxidized glutathione and H respectively by the step of embodiment 1 4 SiMo 12 o 40 Adhesive properties, shear tensile strength, self-healing ability, rheological behavior of the formed underwater adhesive. Adhesive performance test shows that the underwater adhesive has a wide range of bonding ability to artificial solids (such as stainless steel, polyester fiber, polyether ether ketone, polybutadiene latex tube) and natural solids (stone, wood, shells) and other materials . Measurement of oxidized glutathione / H by electronic universal testing machine 4 SiMo 12 o 40 The shear tensile strength of the two-component adhesive to stainless steel, glass, polyether ether k...

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Abstract

The invention relates to a composite bionic adhesive based on oxidation-type glutathione and inorganic polyoxometalate and a preparation method thereof, which belong to the technical field of a material science. The composite bionic adhesive is composed of 23-40% of oxidation-type glutathione and the balance of inorganic polyoxometalate by weight sum of 100%. The oxidation-type glutathione is taken as a raw material, is subjected to static composite with the inorganic polyoxometalate to prepare the adhesive having a macroscopic crosslinking net structure. The continuous net structure formed by synergism of multiple electrostatic force can effectively increase the cohesive force, stability and mechanical strength of the adhesive. In addition, high-density enrichment of residues such as carboxyl group, disulfide bond and amino on the glutathione molecules can effectively increase the interface combination force of the adhesive and different solids. The adhesive has room-temperature maneuverability, is suitable for adhering a plurality of natural solid substrate materials and artificial solid substrate materials on water or under water, and the adhesive has good injection processability.

Description

technical field [0001] The invention belongs to the technical field of material science, and specifically relates to a composite biomimetic adhesive based on oxidized glutathione and inorganic polymetallic oxygen clusters and a preparation method thereof. The above-mentioned adhesive is operable at room temperature, and is suitable for bonding various natural solid materials and artificial solid base materials under environmental conditions such as above water and underwater. Background technique [0002] Adhesives or adhesives are widely used in many fields such as machinery manufacturing, material processing, textiles, packaging and daily life. In addition to meeting common bonding needs, water-based adhesives have the biggest advantages of being green, environmentally friendly, and less polluting, especially suitable for medical and sanitation fields. Such as surgical hemostasis, replacing partial suture of special organs during surgery, complete ligation of blocked fall...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J189/00C09J199/00C09J11/04
CPCC08K3/24C09J11/04C09J189/00C09J199/00
Inventor 李文徐晶李豹吴立新
Owner JILIN UNIV
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