Continuous gradient composite scaffold and preparation method thereof
A composite scaffold and gradient technology, applied in the field of biomedical materials and their preparation, can solve problems such as interface defects, and achieve the effects of good mechanical properties, improved biocompatibility, and good biocompatibility
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
preparation example 1
[0033] γ-Fe 2 o 3 Preparation of / nHAP nanoparticles: using N 2 The method of bubble blowing removes the oxygen dissolved in 30ml deionized water, and then 1.85mmol FeCl 2 4H 2 O and 3.7 mmol FeCl 3 ·6H 2 O was added to the above oxygen-free deionized water until it was completely dissolved to form an aqueous iron salt solution, and the iron salt solution was added to 10ml of NH 4 In OH, 90°C water bath and continuous magnetic stirring 300r / min, after 1h, the generated part is γ-Fe 2 o 3 stock solution of nanoparticles. In part for γ-Fe 2 o 3 In the original solution of nanoparticles, 33.7mmol Ca(NO 3 ) 2 4H 2 O (adjust pH=11) and 20mmol (NH 4 ) 2 HPO 4 (adjust pH = 11), 90 ° C water bath and continuous magnetic stirring 300r / min, after 2 hours, then aging at room temperature for 72 hours to obtain a magnetic composite nanoparticle solution of nano-hydroxyapatite / ferric oxide.
[0034] Place the magnet at the bottom of the beaker containing the magnetic composi...
preparation example 2
[0036] Fe 3 o 4 Preparation of / nHAP nanoparticles: using N 2 The method of bubble blowing removes the oxygen dissolved in 30ml deionized water, and then 1.85mmol FeCl 2 4H 2 O and 3.7 mmol FeCl 3 ·6H 2 O was added to the above oxygen-free deionized water until it was completely dissolved to form an aqueous iron salt solution, and the iron salt solution was added to 10ml of NH 4 In OH, stir magnetically at 300r / min at room temperature 25°C, and Fe will be generated after 1h 3 o 4 Nanoparticle stock solution. in Fe 3 o 4 In the original solution of nanoparticles, 33.7mmol Ca(NO 3 ) 2 4H 2 O (adjust pH=11) and 20mmol (NH 4 ) 2 HPO 4 (adjust pH=11), stir magnetically at 25°C for 300r / min, after 2h, and then age at room temperature for 24h to obtain nano-hydroxyapatite / ferric oxide magnetic composite nanoparticles (Fe 3 o 4 / nHAP) solution.
[0037] Place the magnet at the bottom of the beaker containing the nano-hydroxyapatite / ferric oxide magnetic composite nan...
Embodiment 1
[0039] 1) Dissolve 5.0g PVA (polymerization degree 1750±50, Sinopharm Chemical Reagent Shanghai Co., Ltd.) in 40.0g deionized water, heat to dissolve to obtain A1 solution, and then dissolve 0.5g CH in 25.0g deionized water Obtain A2 solution, A1 solution and A2 solution are mixed, obtain the polymer solution of 70.5g;
[0040] 2) Disperse 5.5 g of pure m-nHAP prepared in Preparation Example 1 in 134.7 g of deionized water, and obtain 140.2 g of magnetic composite nanoparticle suspension by ultrasonic dispersion;
[0041] 3) Mix the polymer solution in step 1) and the magnetic composite nanoparticle suspension in step 2) uniformly to obtain a mixed solution, inject the mixed solution into a mold, and induce it by a magnetic field with a magnetic field strength of 8000 Gauss before gelation The m-nHAP in the mixture was distributed in a continuous gradient for 120 hours, and then the mixture was gelled by cyclic freezing and thawing. In the method of cyclic freezing and thawing...
PUM
Property | Measurement | Unit |
---|---|---|
diameter | aaaaa | aaaaa |
height | aaaaa | aaaaa |
compressive strength | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com