Zerovalent nano-iron coated polymethyl methacrylate and preparation method thereof

A technology of polymethyl methacrylate and zero-valent nano-iron, which is applied in the field of nanomaterial composites, can solve the problems of poor affinity, weak controllability and complex coating mechanism of inorganic nanoparticles.

Active Publication Date: 2014-03-12
SUZHOU DOUBLE ELEPHANT OPTICAL MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, due to the relatively poor affinity between polymethyl methacrylate and inorganic nanoparticles, and the complex coating mechanism, in the prior art, the controllability in the process of polymethyl methacrylate coating inorganic nanoparticles is relatively poor. Weak, especially the molecular weight and molecular weight distribution of polymethyl methacrylate in the final nanocomposite are difficult to control, which has become a bottleneck limiting the further research and application of polymethyl methacrylate inorganic nanoparticle coating

Method used

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  • Zerovalent nano-iron coated polymethyl methacrylate and preparation method thereof
  • Zerovalent nano-iron coated polymethyl methacrylate and preparation method thereof
  • Zerovalent nano-iron coated polymethyl methacrylate and preparation method thereof

Examples

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Effect test

Embodiment 1

[0086] Put 4mL of methyl methacrylate and 0.0077g of azobisisobutyronitrile in a Schlenk tube, heat to 70°C for reaction, after 2 hours of reaction, add 10mL of tetrahydrofuran, then add 250mL of methanol for precipitation, filter and dry After drying, polymethyl methacrylate was obtained.

[0087] Put 1.15g of polymethyl methacrylate prepared above, 1.20g of ferrous chloride and 50mL of tetrahydrofuran into a 250mL three-necked flask, and place them in an ultrasonic cleaner. Under the protection of an inert gas and ultrasonic conditions, 22 mL of lithium triethylborohydride and 50 mL of tetrahydrofuran mixture were added dropwise to the three-necked flask. The dropwise addition time was 30 minutes, and the reaction was continued for 1 hour after the dropwise addition was completed. After the reaction is completed, add 500mL of ethanol to the three-neck flask for precipitation, and pour off the upper liquid. The obtained solid mixture is dissolved in 20mL of tetrahydrofuran an...

Embodiment 2

[0097] Put 4mL of methyl methacrylate and 0.0077g of azobisisobutyronitrile in a Schlenk tube, heat to 70°C for reaction, after 2 hours of reaction, add 10mL of tetrahydrofuran, then add 250mL of methanol for precipitation, filter and dry After drying, polymethyl methacrylate was obtained.

[0098] Put 1.15g of polymethyl methacrylate prepared above, 1.20g of ferrous chloride and 50mL of tetrahydrofuran into a 250mL three-necked flask, and place them in an ultrasonic cleaner. Under the protection of an inert gas and ultrasonic conditions, 22 mL of lithium triethylborohydride and 50 mL of tetrahydrofuran mixture were added dropwise to the three-necked flask. The dropwise addition time was 30 minutes, and the reaction was continued for 1 hour after the dropwise addition was completed. After the reaction is completed, add 500mL of ethanol to the three-neck flask for precipitation, and pour off the upper liquid. The obtained solid mixture is dissolved in 20mL of tetrahydrofuran an...

Embodiment 3

[0103] Put 4mL of methyl methacrylate and 0.0077g of azobisisobutyronitrile in a Schlenk tube, heat to 70°C for reaction, after 2 hours of reaction, add 10mL of tetrahydrofuran, then add 250mL of methanol for precipitation, filter and dry After drying, polymethyl methacrylate was obtained.

[0104] Put 2.30 g of polymethyl methacrylate prepared above, 1.20 g of ferrous chloride and 50 mL of tetrahydrofuran into a 250 mL three-necked flask, and place them in an ultrasonic cleaner. Under the protection of an inert gas and ultrasonic conditions, 22 mL of lithium triethylborohydride and 50 mL of tetrahydrofuran mixture were added dropwise to the three-necked flask. The dropwise addition time was 30 minutes, and the reaction was continued for 1 hour after the dropwise addition was completed. After the reaction is completed, add 500mL of ethanol to the three-neck flask for precipitation, and pour off the upper liquid. The obtained solid mixture is dissolved in 20mL of tetrahydrofura...

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Abstract

The invention provides a zerovalent nano-iron coated polymethyl methacrylate and a preparation method thereof. The preparation method comprises the followings: after zerovalent nano-iron, a monomer, a chain transfer agent, a co-stablizer, an emulsifying agent and water are emulsified, a miniemulsion is obtained; under the protection of protective gas, after the miniemulsion obtained in the last step is heated for reaction, the zerovalent nano-iron coated polymethyl methacrylate is obtained; the protective gas is inert gas or nitrogen; the monomer is methyl methacrylate or epoxypropyl methacrylate. In nanocomposite provided by the invention, molecular weight and molecular weight distribution of the polymethyl methacrylate are both controlled, and paramagnetism exists at the same time.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial composites, and in particular relates to polymethyl methacrylate coated with zero-valent nano-iron and a preparation method thereof. Background technique [0002] Nanomaterials refer to ultrafine materials with particle sizes on the order of nanometers (1-100nm), which are larger than atomic clusters and smaller than ordinary micropowders, and are located in the transition zone between atomic clusters and macroscopic objects. The attractive features of nanomaterials in terms of structure, optoelectronic and chemical properties have aroused great interest of researchers in the industry. [0003] With the industry's higher requirements for material performance, material compounding has become a trend in the development of modern materials. Therefore, organic-inorganic nanocomposites and their special properties have attracted extensive attention from researchers in the field of materials scienc...

Claims

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Application Information

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IPC IPC(8): C08F120/14C08F120/32C08F4/80C08F2/38C08K9/10
Inventor 张正彪顾瑜尉朱秀林程振平朱健周年琛
Owner SUZHOU DOUBLE ELEPHANT OPTICAL MATERIALS CO LTD
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