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A kind of shape control agent and its preparation method and application

A regulator and morphology technology, applied in chemical instruments and methods, inorganic chemistry, non-metallic elements, etc., can solve the problems of nanoparticle agglomeration, affecting activity and subsequent use, and achieve diverse morphology and excellent biocompatibility The effect of simplification of property and shape regulation

Active Publication Date: 2020-03-31
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problem of nanoparticle agglomeration and sedimentation, affecting its activity and subsequent use, the present invention has developed a new nanomaterial morphology regulator and its preparation method
[0007] And in order to solve the deficiencies in the existing nanoparticle preparation method, the present invention provides a method for preparing nanoparticles using the aforementioned shape-regulating agent

Method used

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  • A kind of shape control agent and its preparation method and application
  • A kind of shape control agent and its preparation method and application
  • A kind of shape control agent and its preparation method and application

Examples

Experimental program
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preparation example Construction

[0064] 1. Preparation of Morphology Regulating Agents

[0065] First, the preparation of the morphology regulator will be described. The conversion rate of the morphology regulator was measured by the miniDAWN Tristar aqueous gel permeation chromatography (GPC) produced by Wyatt Technology Co., Ltd., and calculated from the ratio of the main peak of the morphology regulator to the unreacted polyoxyethylene ether type monomer.

Embodiment 1-1

[0067] In this example, the anionic monomer m1 is acrylic acid, the polyoxyethylene ether monomer m2 is allyl polyoxyethylene ether (molecular weight is 2500), the molar ratio of m1 to m2 is 4.5:1, and the initiator used is Ammonium sulfate-sodium bisulfite system.

[0068] Take 2.5 kg of the aforementioned polyoxyethylene ether type monomer, dissolve it in an appropriate amount of water to form a 60% mass fraction solution, add 25.08 g of ammonium persulfate to it, and obtain solution a-1. Take 324g of acrylic acid, dissolve it in water to form a solution with a mass fraction of 60%, add 13g of mercaptopropionic acid and 5.72g of sodium bisulfite, and dissolve to obtain solution b-1. Under the protection of nitrogen and stirring at 300±50rpm, drop b-1 into a-1 at a constant speed at 60 degrees, and the dropwise addition is completed after 2 hours, and then react for 1 hour, and then neutralize the reaction system to pH8-9 with liquid caustic soda. A solution of regulating ag...

Embodiment 1-2

[0070] In this example, the anionic monomer m1 is acrylic acid, the polyoxyethylene ether monomer m2 is allyl polyoxyethylene ether (molecular weight is 1000), the molar ratio of m1 to m2 is 3:1, and the initiator used is Ammonium sulfate-sodium bisulfite system.

[0071] Take 1 kg of the aforementioned polyoxyethylene ether type monomer, dissolve it in an appropriate amount of water to form a solution with a mass fraction of 40%, and add 18.24 g of ammonium persulfate to it to obtain solution a-2. Take 216g of acrylic acid, dissolve it in water to form a solution with a mass fraction of 40%, add 19g of mercaptopropionic acid and 4.16g of sodium bisulfite, and dissolve to obtain solution b-2. Under the protection of nitrogen and stirring at 300±50rpm, drop b-2 into a-2 at a constant speed at 60 degrees, and the dropwise addition is completed after 2 hours, and then react for 1 hour, and then neutralize the reaction system to pH8-9 with liquid caustic soda. A solution of regul...

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Abstract

The invention provides a nano material morphology regulating agent as well as a preparation method and an application thereof. The morphology regulating agent is of a comb-shaped topological structureand is obtained through free radical copolymerization of an anionic monomer and a polyoxyethylene ether monomer. The morphology regulating agent can be applied to obtain a hydroxyapatite nano-rod anda calcium carbonate nano-rod which are controllable in morphology, uniform in size and good in dispersibility. The morphology regulating agent is simple to prepare and operate and high in conversionrate; nano particles can be prepared by using the morphology regulating agent, the atomic efficiency is high, the conversion rate is high, and meanwhile, the tolerance level of the process to parameters such as the temperature, the feeding speed and the feeding ratio is high, the fault tolerance rate is high, and large-scale production is facilitated. The suspension liquid of the obtained hydroxyapatite nano-rod can be stabilized for a long time. The reaction by-products and unreacted raw materials can be settled and separated by themselves, and the post-treatment is simple. The morphology ofthe hydroxyapatite nano-rod can be conveniently regulated and controlled by adjusting the doping amount of the regulating agent. The obtained hydroxyapatite nano-rod can be applied to the fields of concrete enhancement, dental bone repair and the like.

Description

technical field [0001] The invention relates to a shape regulating agent and a preparation method thereof, as well as a method for preparing hydroxyapatite by using the shape regulating agent. Background technique [0002] Nanomaterials are an important hot spot in materials science research in recent years. Nanomaterials have high specific surface area and high surface activity, and have great application potential in biomedical materials, batteries, building materials and other fields. The synthesis of nanomaterials is the key to building structures and properties. key steps. The aqueous phase synthesis method using water as the dispersion medium or solvent is an important nanomaterial synthesis method, but the nanoparticles prepared by this method are often prone to agglomeration and sedimentation after preparation due to their high surface activity, which affects their activity and subsequent use. [0003] At present, the aqueous phase preparation methods of nano-sized ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B25/32C08F283/06C08F220/06
Inventor 严涵杨勇冉千平张建纲舒鑫黄振翟树英李申桐
Owner JIANGSU SOBUTE NEW MATERIALS
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