Polymer/inorganic nanoparticle composite material and preparation method thereof

A technology of inorganic nanoparticles and composite materials, applied in the field of polymer/inorganic nanocomposite materials and their preparation, to achieve the effects of cost saving, simple and fast reaction, and convenient recycling

Active Publication Date: 2020-06-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The method uses inorganic particles instead of surfactants to stabilize the oil-water interface for soap-free emulsion polymerization to prepare polymer / inorganic nanocomposites

Method used

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  • Polymer/inorganic nanoparticle composite material and preparation method thereof
  • Polymer/inorganic nanoparticle composite material and preparation method thereof
  • Polymer/inorganic nanoparticle composite material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A preparation method of a polymer / inorganic nanoparticle composite material, comprising the steps of:

[0035] (1) Weigh 0.1g of inorganic nanoparticles, 0.063g of tris(hydroxymethyl)aminomethane hydrochloride (concentration: 10mM) and 0.005g of dopamine hydrochloride (concentration: 0.5mg / ml), and add them to 10ml of deionized water one by one , mix evenly, use hydrochloric acid and sodium hydroxide solution to adjust the pH of the mixed solution to 8.5, and react for 1 hour under stirring to obtain an aqueous solution of inorganic nanoparticles modified by polydopamine;

[0036] (2) Weigh 0.5g of the initiator ammonium persulfate and dissolve it in 4ml of deionized water, mix well to ensure that the concentration of the initiator ammonium persulfate in the entire reaction system is 0.012g / ml;

[0037] (3) Into a three-necked flask with a volume of 250ml, add the polydopamine-modified inorganic nanoparticle aqueous solution, 5g monomer, and deionized water in sequence in...

Embodiment 2

[0041] A preparation method of a polymer / nano silicon dioxide composite material, comprising the steps of:

[0042] (1) Measure 2ml of silica sol Ludox TM40 with a mass percentage concentration of 40 wt% (silica solid content is 1.04g), 0.063g tris(hydroxymethyl)aminomethane hydrochloride (concentration is 10mM) and 0.005g Add dopamine hydrochloride (concentration: 0.5 mg / ml) into 10 ml of deionized water one by one, mix well, use hydrochloric acid and sodium hydroxide solution to adjust the pH of the mixture to 8.5, and react for 1 hour under stirring to obtain polydopamine-modified Nano silicon dioxide aqueous solution;

[0043] (2) Weigh 0.5g of the initiator ammonium persulfate and dissolve it in 4ml of deionized water, mix well to ensure that the concentration of the initiator ammonium persulfate in the entire reaction system is 0.012g / ml;

[0044] (3) Add the polydopamine-modified nano-silica solution described in step (1), 5g of monomer, and deionized water (to ensure ...

Embodiment 3

[0050] A kind of preparation method of polystyrene / nanometer silicon dioxide composite material, comprises the steps:

[0051] (1) Measure 2ml of silica sol Ludox TM40 with a mass percentage concentration of 40 wt% (silica solid content is 1.04g), 0.063g tris(hydroxymethyl)aminomethane hydrochloride (concentration is 10mM) and 0.005g Add dopamine hydrochloride (concentration: 0.5 mg / ml) into 10 ml of deionized water one by one, mix well, use hydrochloric acid and sodium hydroxide solution to adjust the pH of the mixture to 8.5, and react for 1 hour under stirring to obtain polydopamine-modified Nano silicon dioxide aqueous solution;

[0052] (2) Weigh 0.5g of initiator and dissolve it in 4ml of deionized water, mix well to ensure that the initiator concentration of the entire reaction system is 0.012g / ml;

[0053] (3) Add the polydopamine-modified nano-silica solution, 5g of styrene, and deionized water (to ensure that the whole system is 45ml of deionized water) in sequence ...

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Abstract

The invention discloses a polymer/inorganic nanoparticle composite material and a preparation method thereof, and belongs to the field of composite materials. The preparation method comprises the following steps: (1) uniformly mixing silica sol or inorganic nanoparticles, dopamine, tris (hydroxymethyl) aminomethane hydrochloride and water for reaction to obtain a polydopamine modified inorganic nanoparticle aqueous solution; (2) adding a monomer and water into the polydopamine modified inorganic nanoparticle aqueous solution, uniformly mixing, and introducing nitrogen to remove oxygen; and (3)adding an initiator solution into the reaction solution obtained in the step (2), bubbling to remove oxygen, and carrying out soap-free emulsion polymerization reaction under the protection of nitrogen gas to obtain the polymer/inorganic nanoparticle composite material. No surfactant needs to be added during polymerization, so that the cost is saved, and the environmental pollution is reduced. Bychanging the type of the initiator and the types of the monomer and the inorganic particles in the reaction liquid, the formation and the particle size change of the polymer/inorganic nano compositeparticles can be effectively regulated and controlled.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a polymer / inorganic nano composite material and a preparation method thereof. Background technique [0002] In recent years, due to the high specific surface area and nanoscale reactivity of the new generation of nanomaterials, the preparation, structure analysis, reactivity and properties of nanomaterials have been extensively studied in the field of materials science. Among them, the polymer / inorganic particle nanocomposite particles with core-shell structure have both the excellent properties of polymers and inorganic particles. Functional inorganic particles can also endow materials with excellent catalytic, electromagnetic and optical functions. Therefore, polymer / inorganic nanocomposite particles with a core-shell structure have broad application prospects in high-performance coatings, biomedicine, catalytic systems, textiles and other fields. The polymer / in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F112/08C08F120/14C08F118/08C08F212/08C08F220/18C08F220/14C08F218/08C08F2/44C08F2/22C08K9/04C08K3/36
CPCC08F112/08C08F120/14C08F118/08C08F212/08C08F220/14C08F218/08C08F2/44C08F2/22C08K9/04C08K3/36C08K2201/011
Inventor 洪良智许安丽
Owner SOUTH CHINA UNIV OF TECH
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