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A magnetically reinforced phase-modified composite material and its preparation method

A composite material and magnetic enhancement technology, applied in medical science, prosthesis, tissue regeneration, etc., can solve the problems of brittleness and inability to meet the structural characteristics of bone repair materials, achieve good adsorption characteristics, enhance physiological defense capabilities, and promote cell regeneration. The effect of adhesion

Active Publication Date: 2021-12-07
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bulk hydrotalcite compounds have good biocompatibility as bone implant materials, but they are brittle and cannot meet the structural characteristics of bone repair materials

Method used

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  • A magnetically reinforced phase-modified composite material and its preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A magnetically reinforced phase-modified composite material, the composite material includes the following components according to weight percentage:

[0036] Magnesium iron bimetallic composite oxide 1%,

[0037] Degradable polymer material polylactic acid 99%.

[0038] in:

[0039] The magnesium-iron bimetallic composite oxide is a roasted product of magnesium-iron hydrotalcite, which maintains the interlayer structure of hydrotalcite compounds, and has a particle size of 500 mesh.

[0040] The average molecular weight of the biodegradable polymer material is 50,000, which is medical grade polylactic acid.

[0041] Its preparation method comprises the following steps:

[0042] 1) Preparation of layered magnesium-iron bimetallic composite oxide: preparation of Mg(NO 3 ) 2 ·6H 2 O and Fe(NO 3 ) 3 9H 2 O blended salt solution containing 0.1mol / L Mg(NO 3 ) 2 ·6H 2 O and 0.02mol / L Fe(NO 3 ) 3 9H 2 O, and 400rpm magnetic stirring salt solution, 0.1mol / L NaOH ...

Embodiment 2

[0046] A magnetically reinforced phase-modified composite material, the composite material includes the following components according to weight percentage:

[0047] Magnesium iron bimetallic composite oxide 25%,

[0048] Degradable polymer material polycaprolactone 75%.

[0049] in:

[0050] The magnesium-iron bimetallic composite oxide is a roasted product of magnesium-iron hydrotalcite, which maintains the interlayer structure of hydrotalcite compounds, and has a particle size of 800 mesh.

[0051] The average molecular weight of the biodegradable polymer material is 500,000, which is medical grade polycaprolactone.

[0052] Its preparation method comprises the following steps:

[0053] 1) Preparation of layered magnesium-iron bimetallic composite oxide: preparation of Mg(NO 3 ) 2 ·6H 2 O and Fe(NO 3 ) 3 9H 2 O blended salt solution containing 0.3mol / L Mg(NO 3 ) 2 ·6H 2 O and 0.1mol / L Fe(NO 3 ) 3 9H 2 O, and 1000rpm magnetic stirring salt solution, 1mol / L NaO...

Embodiment 3

[0057] A magnetically reinforced phase-modified composite material, the composite material includes the following components according to weight percentage:

[0058] Magnesium iron bimetallic composite oxide 10%,

[0059] Degradable polymer material polyglycolide 90%.

[0060] in:

[0061] The magnesium-iron bimetal composite oxide is a roasted product of magnesium-iron hydrotalcite, which maintains the interlayer structure of hydrotalcite compounds, and has a particle size of 600 mesh.

[0062] The average molecular weight of the biodegradable polymer material is 300,000, which is medical grade polyglycolide.

[0063] Its preparation method comprises the following steps:

[0064] 1) Preparation of layered magnesium-iron bimetallic composite oxide: preparation of Mg(NO 3 ) 2 ·6H 2 O and Fe(NO 3 ) 3 9H 2 O blended salt solution containing 0.2mol / L Mg(NO 3 ) 2 ·6H 2 O and 0.05mol / L Fe(NO 3 ) 3 9H 2 O, 600rpm magnetically stirred salt solution, 0.5mol / L NaOH and 0....

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Abstract

The invention discloses a magnetically enhanced phase-modified composite material and a preparation method thereof. The composite material comprises the following components according to weight percentage: 1% to 25% of a magnesium-iron bimetallic composite oxide, and 75% to 25% of a biodegradable polymer material. 99%. The preparation method comprises the following steps: 1) preparation of layered magnesium-iron bimetallic composite oxide; 2) blending of magnesium-iron bimetallic composite oxide and biodegradable polymer solution; 3) forming of magnetically enhanced phase-modified composite material . The invention adopts composite reinforcement to prepare biodegradable magnetically reinforced phase-modified polymer-based composite materials, and utilizes the magnetic characteristics of layered magnesium-iron bimetallic composite oxides to introduce a rotating magnetic field to realize the reinforcement phase in the biodegradable polymer matrix Anisotropic distribution, the composite material has the advantages of controllable degradation rate, good biocompatibility and excellent mechanical properties.

Description

technical field [0001] The invention relates to a magnetically reinforced phase-modified composite material and a preparation method thereof, belonging to the field of polymer-based composite materials. Background technique [0002] Fractures are the most common clinical trauma in medicine, and most orthopedic procedures require implanted materials for bone filling or bone fixation. Common biodegradable polymer materials include polylactic acid, polycaprolactone, and polyglycolide. Taking polylactic acid as an example, polylactic acid has good biodegradability and biosafety, and is recognized by the US FDA as a biodegradable material, which can avoid the pain and economic burden of secondary surgery on patients, and is expected to replace traditional bioinert materials. Material. However, degradable polymer materials have some disadvantages as implant materials for bone repair, including: (1) the acidic physiological microenvironment is caused during the degradation proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L27/44A61L27/50A61L27/56A61L27/58
CPCA61L27/446A61L27/50A61L27/56A61L27/58A61L2430/02C08L67/04
Inventor 白晶周星星董强胜程兆俊张越薛烽储成林
Owner SOUTHEAST UNIV
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