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Modification method for functionalizing surface of material

A surface functionalization and modification technology, applied in the direction of metal material coating process, can solve the problems of difficult control of process parameters, complicated operation and expensive, and achieve easier control of process parameters, low implementation cost, and strong universality. Effect

Active Publication Date: 2013-12-11
兰州红会医疗器械有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most existing modification strategies often involve multi-step reactions and only target a certain material, and for materials lacking functional groups on the surface, they must first be subjected to plasma, ozone oxidation, γ-ray irradiation, electron beam or laser irradiation. etc., so as to introduce functional groups on the surface of the material and modify the surface of the material functionally
These modification methods not only require more expensive special equipment, but also are more complicated to operate, and the process parameters are not easy to control, so they are not universal
[0004] The prior art closest to the present invention is the Chinese patent with the publication number CN101538373A, which discloses a method for copolymerization and graft modification of the surface of polyurethane materials, in which polymerizable carbon is chemically attached to the surface of polyurethane materials. Carbon double bonds, in the presence of initiators and vinyl monomers, graft and modify the surface of polyurethane materials through free radical graft copolymerization, but because the patent uses acryloyloxyisothiocyanate solution and methyl The acryloxyisothiocyanate solution acts on the surface of the polyurethane material to achieve a carbon-carbon double bond on the surface of the polyurethane material. Although this method solves the problem of surface improvement of the polyurethane material, as mentioned above, it is only for the polyurethane material. , still cannot be used for surface modification of other kinds of materials
[0005] Since the various improvement technologies disclosed at present can only realize the surface modification technology of a specific single material, this obviously greatly restricts the popularization and application of the surface improvement technology. , Modification method for surface functionalization of materials with universality

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  • Modification method for functionalizing surface of material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Example 1: Functional modification of glass slide surface temperature sensitivity

[0042] a), preparation of dopamine functional monomer:

[0043] a10), 3.83g of borax, 1.9g of dopamine hydrochloride, and 100mL of water were placed in a 250mL reaction device, stirred and dissolved, and the pH value was adjusted to 9-10 with aqueous sodium carbonate;

[0044] Slowly drop 1.05 g of methacryloyl chloride into the reaction device, and stir and react for 24 hours at room temperature to obtain a reaction solution;

[0045] a20), using concentrated hydrochloric acid to adjust the reaction solution obtained in the above step a10) to an acidic reaction solution with a pH value of 2, use ethyl acetate to extract and separate the acidic reaction solution, the number of extractions is selected for 3 times, and of course 4 times or More than 4 times, the organic phases obtained by each extraction were combined to obtain the organic phase;

[0046] a30), the organic phase obtained...

Embodiment 2

[0051] Embodiment 2: the functional modification of antibacterial performance on the surface of stainless steel sheet

[0052] a), preparation of dopamine functional monomer:

[0053] a10), 3.83g of borax, 1.9g of dopamine hydrochloride, and 100mL of water were placed in a 250mL reaction device, stirred and dissolved, and the pH value was adjusted to 9-10 with aqueous sodium carbonate;

[0054] Slowly drop 1.05 g of methacryloyl chloride into the reaction device, and stir and react for 24 hours at room temperature to obtain a reaction solution;

[0055] a20), using concentrated hydrochloric acid to adjust the reaction solution obtained in the above step a10) to an acidic reaction solution with a pH value of 2, use ethyl acetate to extract and separate the acidic reaction solution, the number of extractions is selected for 3 times, and of course 4 times or More than 4 times, the organic phases obtained by each extraction were combined to obtain the organic phase;

[0056] a30...

Embodiment 3

[0061] Example 3: Functional Modification of Surface pH Sensitivity of Polyurethane Tubes

[0062] a), preparation of dopamine functional monomer:

[0063] a10), 3.83g of borax, 1.9g of dopamine hydrochloride, and 100mL of water were placed in a 250mL reaction device, stirred and dissolved, and the pH value was adjusted to 9-10 with aqueous sodium carbonate;

[0064] Slowly drop 1.05 g of methacryloyl chloride into the reaction device, and stir and react for 24 hours at room temperature to obtain a reaction solution;

[0065] a20), using concentrated hydrochloric acid to adjust the reaction solution obtained in the above step a10) to an acidic reaction solution with a pH value of 2, use ethyl acetate to extract and separate the acidic reaction solution, the number of extractions is selected for 3 times, and of course 4 times or More than 4 times, the organic phases obtained by each extraction were combined to obtain the organic phase;

[0066] a30), the organic phase obtaine...

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Abstract

The invention discloses a modification method for functionalizing the surface of a material. The modification method comprises the following steps of: (a) preparing a dopamine functional monomer; (b) in a reaction device, enabling the material to react with an alkaline solution containing the dopamine functional monomer; (c) obtaining a material of which the surface is connected with a carbon-carbon double-bond after the reaction in the step (b) is finished; (d) in the reaction device, performing free radical type graft copolymerization reaction on the material of which the surface is connected with the carbon-carbon double-bond, obtained in the step (c), and a monomer solution containing an initiating agent; and (e) obtaining a modified material of which the surface is functionalized after the graft copolymerization reaction in the step (d) is finished to finish the modification for functionalizing the surface of the material. The modification method disclosed by the invention is simple and convenient to operate and strong in universality.

Description

technical field [0001] The invention relates to material modification technology, in particular to a modification method for material surface functionalization. Background technique [0002] Polymer materials, inorganic non-metallic and metallic materials are widely used in human activities, and it is of great significance to precisely control the physical and chemical properties of the surface of these materials in the fields of materials science, chemistry and biotechnology. For example: the sensitivity of a biosensing chip mainly depends on the chemical properties of the chip surface; the surface properties of medical devices and drug delivery carriers determine their biocompatibility and therapeutic effect; the type and size of molecules bound to the surface of nanomaterials determine the size and shape etc. Under normal circumstances, the material surface itself often does not have the required specific chemical properties. Therefore, functional modification of the mat...

Claims

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Application Information

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IPC IPC(8): C08J7/16C03C17/28C23C22/62C08L75/04C08L27/06
Inventor 陈红武照强杜军
Owner 兰州红会医疗器械有限公司
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