Nano particle surface modifying method

A nanoparticle and surface modification technology, which is applied in the treatment of dyed low molecular weight organic compounds and dyed high molecular organic compounds, etc., can solve the problems of difficult synthesis and difficult industrial production, and achieve easy availability of raw materials, improved dispersibility and stability. sexual effect

Inactive Publication Date: 2008-05-14
JINCHUAN GROUP LIMITED
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Problems solved by technology

[0004] However, the above methods all use specially synthesized silane coupling agents to anchor the initiator group to the surface of the inorg

Method used

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  • Nano particle surface modifying method

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Embodiment 1

[0031] Reagents used

[0032] Methyl methacrylate (MMA), styrene (St): wash with 10% NaOH solution before use, dry over anhydrous sodium sulfate, distill and refine under reduced pressure and store at low temperature.

[0033] CuCl 2 ·6H 2 O removes water of crystallization by reacting with thionyl chloride.

[0034] Cuprous chloride (CuCl): wash with 10% acetic acid solution three times, then wash with acetone of analytical grade until the pH is between 4 and 7, and dry in vacuum at room temperature for 24 hours in the dark.

[0035] 2,2,-bipyridine (bipy): purified by recrystallization from acetone.

[0036] 2,2,6,6-Tetramethyl-1-piperidine oxynitride (TEMPO).

[0037] 1,4-Dioxane: purified twice by distillation before use.

[0038] Thionyl chloride (SOCl 2 ), tert-butyl hydroperoxide (TBHP)

[0039] Tetrahydrofuran (THF), Xylene, Chloroform, Toluene, Methanol

[0040] 2 Chlorination of hydroxyl groups on the surface of nanoparticles

[0041] Add the nanoparticles int...

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Abstract

The invention relates to a nanoparticle surface modification method, comprising following steps: the nanoparticle is processed by SOCl2, and is reacted with tert-butyl hydrogen peroxide (TBHP) to form into a peroxide solicitation radical; the free radical polymerization reaction is transferred by reverse atomy which is triggered through the surface, and the polymerization of the cinnamene monomer is triggered by the free radical polymerization reaction; thereby the nanometer compound particle which is enwrapped by the graft polystyrene on the surface of the nanoparticle is prepared. Due to the active compound particle at the end of the outer-layer polymer of the nanometer compound particle composed through the free radical polymerization reaction of reverse atomy transfer triggered by the surface, the active compound particle can be used as giant molecule evocating agent to trigger the methacrylic acid methyl ester monomer to implement free radical polymerization transfer through the atomy on the surface; after the two surface solicitation polymerizations, the nanometer compound particle which is enwrapped by the methacrylic acid methyl ester is prepared. The invention has the advantages that: a good organic and inorganic nanometer compound material can be prepared through the surface solicitation polymerization reactions, and the nanoparticle surface is modified successfully, and the dispersivity and stability of the nanoparticle can be improved.

Description

technical field [0001] A method for modifying the surface of nanoparticles relates to a method for modifying the surface of nanoparticles by adopting an organic synthesis method. Background technique [0002] Nano powder science and technology is a new science and technology developed in recent decades, and it is an important part of materials science. Since the report on nanomaterials in 1984, nanomaterials have attracted widespread attention for their excellent properties. Nanoparticles have basic characteristics such as small size effect, quantum size effect, surface effect and macroscopic quantum tunneling effect, and show specific functions compared with conventional materials in terms of magnetism, catalysis, light absorption, conductivity, hardness and melting point. After more than ten years of research, nanotechnology has gradually been applied in the fields of materials, microelectronics, ultra-micro sensors, bioengineering, optoelectronics and chemical industry. ...

Claims

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Application Information

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IPC IPC(8): C08F292/00C09C3/10C09C3/08C08L33/12
Inventor 方刚
Owner JINCHUAN GROUP LIMITED
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