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Preparation method for amine-group-rich polymerization film
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A kind of amine-rich, thin-film technology, which is applied in the direction of metal material coating technology, etc., to achieve the effects of enhanced film stability, low process cost, and simple and easy preparation method
Inactive Publication Date: 2014-12-17
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
However, the secondary reactivity of the dopamine film is limited to biomolecules with sulfhydryl or amine groups, because the secondary reactivity of the dopamine film is based on the combination of the phenolic hydroxyl or quinone groups retained on the dopamine film with the biomolecules. Amino or sulfhydryl based on Michael addition or Schiff base reaction
However, there is no report on the introduction of hexamethylenediamine and dopamine copolymerization to prepare films.
Method used
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Embodiment 1
[0019] A preparation method of a rich amine-based polymeric film, the steps of which are:
[0020] A. Material preparation.
[0021] Polish, clean, and dry the base material 316L SS that needs surface modification, and then use it;
[0022] B. Film preparation.
[0023] Dissolve 1mg / ml dopamine and 20mg / ml hexamethylenediamine in alkaline Tris-base buffer, soak the base material prepared in A in the solution after the reactants are uniformly mixed and react for 48h, then fully rinse with distilled water and dry , that is, a film rich in amine groups on the surface is obtained.
Embodiment 2
[0025] A preparation method of a rich amine-based polymeric film, the steps of which are:
[0026] A. Material preparation.
[0027] Clean and dry PTFE, the substrate material that needs to be modified, for use;
[0028] B. Film preparation.
[0029] Dissolve 2mg / ml dopamine and 15mg / ml ethylenediamine in alkaline Tris-base buffer, soak the base material prepared in A in the solution after the reactants are uniformly mixed and react for 24h, then fully rinse with distilled water, and dry , that is, a film rich in amine groups on the surface is obtained.
Embodiment 3
[0031] A preparation method of a rich amine-based polymeric film, the steps of which are:
[0032] A. Material preparation.
[0033] Polish, clean, and dry the base material 316LSS that needs to be modified, and wait for use;
[0034] B. Film preparation.
[0035] Dissolve 1mg / ml dopamine and 20mg / ml polylysine (PLL) in alkaline Tris-base buffer, soak the base material prepared in A in the solution after the reactants are evenly mixed and react for 12h, then use Rinse thoroughly with distilled water and dry to obtain a film rich in amine groups on the surface.
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Abstract
A disclosed preparation method for an amine-group polymerization film is characterized by comprising performing copolymerization on an organic amine compound with amine groups at two ends and a polyphenol compound containing catechol, and regulating the reaction conditions, so as to obtain the film rich in amine functional groups on the surface of a basic material. The prepared polymerization film has relatively high surface amine content, and is applicable to fixation of a plurality of biological molecules. The prepared film is good in stability, the catechol compound has extremely strong binding force with the base material, and also introduction of the organic amine compound helps to improve the crosslinking degree of the film and further enhancing the stability of the film. The preparation method is simple and practicable, can used to perform deposition on surfaces of a plurality of materials, does not need complex equipment, is low in technological cost, and establishes a base for applying the film to surface modification of biological materials.
Description
technical field [0001] The invention relates to a method for preparing a polymeric film with abundant amino functional groups, which is applied to the surface modification of biological materials. Background technique [0002] Surface modification of biomaterials is a technology that improves the surface properties of materials or enhances special surface properties without affecting the properties of the material itself. It plays an irreplaceable role in the fields of chemistry, biology, materials science, and applied science, engineering, and technology. effect. Existing methods for functional modification of material surfaces include self-assembled thin films, silanization, physical / chemical vapor deposition, and surface grafting. Although these methods are commonly used in research, many methods have many limitations in wide application. For example, the requirements for interface modification and chemical specificity between surfaces, complex equipment used, requiremen...
Claims
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Application Information
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