Mesoporous calcium carbonate nanoparticles, preparation method thereof and composite material

A nanoparticle and calcium carbonate technology, applied in the field of material science, can solve the problems of difficulty in forming calcium carbonate nanoparticles with mesoporous structure, inability to create strong organic/inorganic interaction force, etc., and achieve the effect of promoting wound healing

Active Publication Date: 2022-04-22
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Calcium carbonate particles prepared by co-precipitation in aqueous solution are generally in a crystalline state, and it is difficult to stabilize in an amorphous state without a strong stabilizer, and cannot create a strong organic / inorganic interaction force
Amorphous calcium carbonate nanoparticles can be prepared in ethanol solution using gas-phase diffusion method, this amorphous character creates conditions for its further compounding, crystallization and shaping, but in the absence of mesoporous etchant or pore former , it is difficult to form calcium carbonate nanoparticles with mesoporous structure
Therefore, how to develop new synthetic methods to prepare carbonic acid nanoparticles with mesoporous structure is very challenging.

Method used

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  • Mesoporous calcium carbonate nanoparticles, preparation method thereof and composite material
  • Mesoporous calcium carbonate nanoparticles, preparation method thereof and composite material
  • Mesoporous calcium carbonate nanoparticles, preparation method thereof and composite material

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preparation example Construction

[0039] The present invention also provides a kind of preparation method of above-mentioned mesoporous calcium carbonate nanoparticle, comprises the steps:

[0040] (a) Dissolve the calcium chloride donor completely in an organic solvent, then add an etchant, and mix well to obtain solution I 1 , the solution I 1 Contains calcium chloride, etchant and a small amount of water;

[0041] (b) will be fitted with I1 The open container is placed in the airtight container that ammonium bicarbonate is housed, and ammonium bicarbonate is excessive in the reaction process, and standing reaction 3~10 days obtains reactant I 2 ;

[0042] (c) will I 2 Centrifugation, washing and drying are carried out successively to obtain the product I 3 ;

[0043] The calcium chloride donor consists of water and calcium chloride;

[0044] The organic solvent is selected from polar solvents and protic solvents.

[0045] The calcium chloride donor is completely dissolved in a reaction flask contain...

Embodiment 1

[0066] Embodiment 1: Preparation of mesoporous calcium carbonate nanoparticles

[0067] Materials: calcium chloride dihydrate; absolute ethanol; triethyl phosphate; ammonium bicarbonate particles; reaction bottle; airtight container; sealing film.

[0068] Completely dissolve 29.4mg of calcium chloride dihydrate in 40mL of absolute ethanol, place in a 50mL reaction bottle, then add 20μL of triethyl phosphate, mix well, and obtain solution I 1 , use a parafilm to seal the reaction bottle, and pierce 6 holes on the film; then place the reaction bottle in an airtight container covered with ammonium bicarbonate particles, and leave it at room temperature for 7 days to obtain the reaction solution I 2 ; to reaction solution I 2 Carry out centrifugation to obtain calcium carbonate nanoparticles with a mesoporous structure, then wash with absolute ethanol and dry in an oven to obtain the final product I 3 , and finally the I 3 Store in 40mL of absolute ethanol, and keep in a water...

Embodiment 2

[0070] Embodiment 2: Mesoporous calcium carbonate nanoparticles and polymer form composite material

[0071] Material: final product I synthesized in Example 1 3 PHBV (polyhydroxybutyrate valeric acid copolyester); Chloroform; Liquid nitrogen dish; Deionized water; Synthesized calcium carbonate nanoparticles without adding triethyl phosphate in embodiment 2;

[0072] Synthetic mesoporous calcium carbonate nanoparticles (i.e. final product I) in 15mg embodiment 1 3 ) was dispersed in 1 mL of chloroform, 75 mg of PHBV (polyhydroxybutyrate copolyester) polymer was completely dissolved in 2 mL of chloroform, and then the above two solutions were uniformly mixed to obtain mixed solution II 1 ; the mixture II 1Pour it into a 7cm×3cm×3cm smooth stainless steel mold and wrap it with tinfoil paper. Put the mold into the liquid nitrogen dish quickly and make sure that the mold is in a horizontal state; then quickly transfer the liquid nitrogen dish with the mold to room temperature an...

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Abstract

The invention relates to the technical field of material science, and provides mesoporous calcium carbonate nanoparticles, a preparation method thereof and a composite material. The calcium carbonate nano-particle is formed by compounding amorphous calcium carbonate and calcium carbonate crystal grains, the calcium carbonate nano-particle has a mesoporous structure, and the mesoporous size is 2-50 nm. The preparation method of the calcium carbonate nanoparticles comprises the following steps: completely dissolving a calcium chloride donor in an organic solvent, then adding an etching agent, and uniformly mixing to obtain a solution I1; putting the open container filled with the I1 into a closed container filled with ammonium bicarbonate, enabling the ammonium bicarbonate to be excessive in the reaction process, and standing to react for 3-10 days to obtain a reactant I2; and sequentially centrifuging, washing and drying the I2 to obtain a product I3. The calcium carbonate nanoparticles are mixed with a polymer to prepare a high-strength and high-toughness composite material.

Description

technical field [0001] The invention relates to the technical field of material science, in particular to a mesoporous calcium carbonate nanoparticle, a preparation method thereof and a composite material. Background technique [0002] Calcium carbonate is the main inorganic component of many shellfish, and the composite structural material formed with collagen has excellent mechanical properties. Simulating this composite structure has important enlightening significance for the artificial synthesis of lightweight and high-performance composite materials. It is particularly important to understand and control the biomineralization process of calcium carbonate. Calcium carbonate nanopowder, as a conventional nano-reinforcement additive, has very limited enhancement effect on the mechanical properties of polymers, and the enhancement of strength and toughness is often incompatible, mainly because the force between calcium carbonate and polymer is Weak forces such as static ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18A61L15/18A61L15/26
CPCA61L15/18A61L15/26C01F11/184A61L2300/624C01P2004/03C01P2004/04C01P2006/12C01P2002/72C01P2004/64
Inventor 何前军王英帅
Owner SHENZHEN UNIV
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