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Method for preparing double-responsiveness nanometer microsphere through mercaptan-alkene visible light emulsion polymerization and double-responsiveness nanometer microsphere

A nano-microsphere and emulsion polymerization technology, applied in the field of functional and intelligent polymer materials, can solve the problem of high energy consumption of UV light, and achieve the effects of environmental protection, fast reaction speed, safety, environmental protection and energy consumption

Active Publication Date: 2019-06-14
GUIZHOU MINZU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, thiol-ene UV photoemulsion polymerization technology has attracted attention in developed countries such as Europe and the United States, but in view of the disadvantages of high energy consumption of UV light, there is still room for improvement in the development and application of this technology

Method used

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  • Method for preparing double-responsiveness nanometer microsphere through mercaptan-alkene visible light emulsion polymerization and double-responsiveness nanometer microsphere
  • Method for preparing double-responsiveness nanometer microsphere through mercaptan-alkene visible light emulsion polymerization and double-responsiveness nanometer microsphere
  • Method for preparing double-responsiveness nanometer microsphere through mercaptan-alkene visible light emulsion polymerization and double-responsiveness nanometer microsphere

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Experimental program
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Effect test

Embodiment 1

[0068] A. Take trimethylolpropane tris(3-mercaptopropionate), allyl methacrylate, tri(ethylene glycol) divinyl ether, hexadecane and 1,4-benzenediol, add azridine The mixture of pyridine orange and diphenyliodonium hexafluorophosphate was stirred at 15°C for 2h at a stirring speed of 250 rpm to obtain an oil phase solution;

[0069] B, after adding the mixed solution of cetyltrimethylammonium bromide and triethylenetetramine to the oil phase solution obtained in step A, carry out ultrasonic emulsification, the time of ultrasonic emulsification is 1h, the frequency of ultrasonic is 8MHz, the ultrasonic emulsification Strength is 8W / cm 2 Obtain pre-emulsion;

[0070] C. At 15°C, irradiate the pre-emulsion obtained in step B by LED, the LED irradiation time is 5min, the wavelength of the LED is 390nm, the peak radiation value is 50nm, and the light intensity is 40mW / cm -2 Obtain double responsive polymer nanosphere emulsion;

[0071] D, the dual responsive polymer nano-microsp...

Embodiment 2

[0075] A. Take trimethylolpropane tris(3-mercaptopropionate), allyl methacrylate, tri(ethylene glycol) divinyl ether, hexadecane and 1,4-benzenediol, add Irgacure 784 was stirred at 15°C for 2 hours at a stirring speed of 250 rpm to obtain an oil phase solution;

[0076] B, after adding the mixed solution of cetyltrimethylammonium bromide and triethylenetetramine to the oil phase solution obtained in step A, carry out ultrasonic emulsification, the time of ultrasonic emulsification is 1h, the frequency of ultrasonic is 8MHz, the ultrasonic emulsification Strength is 8W / cm 2 Obtain pre-emulsion;

[0077] C. At 15°C, irradiate the pre-emulsion obtained in step B by LED, the LED irradiation time is 5min, the wavelength of the LED is 390nm, the peak radiation value is 50nm, and the light intensity is 40mW / cm -2 Obtain double responsive polymer nanosphere emulsion;

[0078] D, the dual responsive polymer nano-microsphere emulsion obtained in step C is centrifuged for 3min, and t...

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Abstract

The invention belongs to the technical field of functional and intelligent high polymer materials, and particularly relates to a method for preparing a double-responsiveness nanometer microsphere through mercaptan-alkene visible light emulsion polymerization and the double-responsiveness nanometer microsphere. According to the invention, a thiol compound, an acrylic acid compound and a vinyl ethercompound are used as monomers, and thiol-alkene click chemistry and a visible light initiated emulsion polymerization technology are adopted. By accurately controlling the proportion of the monomers,the double-responsiveness polymer nano-microsphere is successfully synthesized. The preparation method disclosed by the invention has the main advantages of simple process, low cost, rapidness, highefficiency, safety, environmental protection, low energy consumption and the like. The prepared and synthesized dual-responsiveness polymer nano microsphere not only has a semi-crystalline structure,but also has dual-response characteristics of pH and oxidation reduction, and a preparation technology which has a good prospect and can be widely applied to the fields of nano carriers and biologicalmaterials is provided.

Description

technical field [0001] The invention belongs to the technical field of functional and intelligent polymer materials, and in particular relates to a method for preparing double-responsive nano-microspheres by thiol-ene visible light emulsion polymerization and the double-responsive nano-microspheres. Background technique [0002] The concept of smart materials was first proposed by Professor Takagi Toshinori in Japan in 1989. Those who can obtain information about environmental conditions and their changes from their own deep or internal, and then judge, process and respond to change their own structure and function, so that they are well coordinated with the external environment and are self-adaptive The material system can be defined as a smart material. Nanosphere is a spherical material with significant surface effect and volume effect, and is an important part of smart materials. Changes or respond sensitively to electric field, magnetic field, light, etc., so it can b...

Claims

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Application Information

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IPC IPC(8): C08J3/12C08G75/045C08L81/02
Inventor 左晓玲杨吟野罗胜耘
Owner GUIZHOU MINZU UNIV
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