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Preparation method of amino-terminated hyperbranched polybenzimidazole composite film

A polybenzimidazole and amino-terminated technology, which is applied in the preparation field of composite thin film technology, can solve the problems of reducing the growth ability of hydroxyapatite and being difficult to act

Active Publication Date: 2010-11-10
SHENZHEN DALTON ELECTRONICS MATERIAL CO LTD
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AI Technical Summary

Problems solved by technology

It is difficult to interact with calcium ions, which greatly reduces the growth ability of hydroxyapatite

Method used

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  • Preparation method of amino-terminated hyperbranched polybenzimidazole composite film
  • Preparation method of amino-terminated hyperbranched polybenzimidazole composite film
  • Preparation method of amino-terminated hyperbranched polybenzimidazole composite film

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Embodiment Construction

[0027] The embodiments of the present invention are described in detail below: the present embodiment is implemented under the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following embodiments.

[0028] like Figure 1-3 Shown, the concrete method that the two-step method composite membrane of the present invention prepares is as follows:

[0029] 1 with tetramine as A 2 Monomer, 1,3,5-Phenellitic acid as B 3 monomer through A 2 +B 3 The method of two-step addition of monomers synthesizes amino-terminated hyperbranched benzimidazole polymers, such as figure 1 shown.

[0030] 2 Using TPA as a cross-linking agent, the amino-terminated hyperbranched polybenzimidazole film is prepared by mixing and laying a film, such as figure 2 shown. Dimethyl sulfoxide was used as solvent. At the same time, the cross-linking agent TPA wa...

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Abstract

The invention relates to a preparation method of an amino-terminated hyperbranched poly benzimidazole composite film, belonging to the technical field of composite thin films. The preparation method comprises the following two steps of compositing an amino-terminated hyperbranched poly benzimidazole thin film matrix, and precipitating hydroxyapatite, wherein the matrix is composited with a methodusing tetramine as an A2 monomer and benzene-1,3,5-tricarboxylic acid as a B3 monomer; and the hydroxyapatite is precipitated by combining alternative immersing and simulated body fluid immersing. The invention provides a method for preparing the composite thin film using an alkaline group as a matrix at normal temperature and pressure. The formed hydroxyapatite and polymeric matrix are in a sandwich structure. The hydroxyapatite can be properly fixed on the surface of the composite thin film so that not only the biocompatibility and the bone conductivity of the thin film can be improved but also the hydrophilicity of the thin film can be increased.

Description

technical field [0001] The invention relates to a preparation method in the technical field of composite films, in particular to a preparation method of amino-terminated hyperbranched polybenzimidazole composite films. Background technique [0002] Hydroxyapatite is a biofunctional material with bioaffinity and protein adsorption. Depositing hydroxyapatite on polymer surfaces has been considered as one of the common methods for preparing tissue repair materials. Many polymeric materials have been used as substrates for hydroxyapatite deposition. Among them are natural polymers including silk, collagen, protein, chitosan gel and extracellular matrix; biodegradable materials include poly-caprolactone, polylactic acid-grafted-glycolic acid scaffold, porous polyester film and polyamide films; and non-biodegradable materials including polyethylene; polyvinyl alcohol; polymethyl methacrylate, etc. Such materials will be developed towards higher mechanical properties and biocomp...

Claims

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Application Information

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IPC IPC(8): A61L27/40B32B27/06C08L79/04C08J7/06C08J5/18
Inventor 黄霞芸史子兴印杰徐宏杰
Owner SHENZHEN DALTON ELECTRONICS MATERIAL CO LTD
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