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Preparation method and application of polystyrene fluorescent microspheres

A technology of polystyrene and fluorescent microspheres, applied in fluorescence/phosphorescence, material excitation analysis, etc., can solve problems such as poor monodispersity of indicating materials, and achieve easy oxygen sensing testing, good reproducibility, and easy The effect of the operation

Inactive Publication Date: 2015-01-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problem of poor monodispersity of the existing fluorescent microspheres used as oxygen sensing indicator materials, and provides a preparation method and application of polystyrene fluorescent microspheres

Method used

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  • Preparation method and application of polystyrene fluorescent microspheres
  • Preparation method and application of polystyrene fluorescent microspheres
  • Preparation method and application of polystyrene fluorescent microspheres

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specific Embodiment approach 1

[0023] Specific embodiment one: the preparation method of a kind of polystyrene fluorescent microsphere of present embodiment is carried out according to the following steps:

[0024] Add ultrapure water into the reaction vessel, and mechanically stir for 25min to 35min at a speed of 350r / min to 450r / min under the protection of nitrogen atmosphere, then add fluorescent indicator material and polystyrene, continue to stir for 10min to 20min, then add over Potassium sulfate aqueous solution is condensed and refluxed for 22h-24h at a temperature of 65-75°C to obtain polystyrene fluorescent microspheres;

[0025] The ratio of the mass of the fluorescent indicating material to the volume of polystyrene is (10-40) mg: 3 mL;

[0026] The ratio of the mass of the fluorescent indicator material to the volume of ultrapure water is (10-40) mg: 200 mL;

[0027] The ratio of the mass of the fluorescent indicator material to the volume of the potassium persulfate aqueous solution is (10-40...

specific Embodiment approach 2

[0033] Embodiment 2: This embodiment differs from Embodiment 1 in that the ratio of the mass of the fluorescent indicator material to the volume of polystyrene is 20mg:3mL. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the ratio of the mass of the fluorescent indicator material to the volume of ultrapure water is 20mg:200mL. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a preparation method and application of polystyrene fluorescent microspheres, relating to the technical fields of high polymer material synthesis and environment detection, particularly a preparation method and application of fluorescent microspheres. The invention aims to solve the problem of poor monodispersity of the fluorescent microspheres used as an oxygen-sensing indication material at present. The preparation method comprises the following steps: adding ultrapure water into a reaction vessel, mechanically stirring at the rotation speed of 350-450 r / min in a nitrogen protective atmosphere for 25-35 minutes, adding a fluorescent indication material and polystyrene, continuing stirring for 10-20 minutes, adding a potassium persulfate water solution, and condensing at 65-75 DEG C to perform reflux reaction for 22-24 hours to obtain the polystyrene fluorescent microspheres. The polystyrene fluorescent microspheres are applicable to the field of detection of dissolved oxygen in a water body. The polystyrene fluorescent microspheres have the advantages of simple synthesis method, controllable size, high oxygen sensitivity and favorable reproducibility.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis and environmental detection, in particular to a preparation method and application of fluorescent microspheres. Background technique [0002] Gaseous oxygen dissolves in water to form dissolved oxygen (DO), and the amount of dissolved oxygen in water is related to the survival of aquatic organisms. In daily life, oxygen has gradually become an element that people control and control most. In the fields of industrial production, environmental monitoring, medical health and scientific research, it is particularly important to detect the concentration of dissolved oxygen in water. [0003] Commonly used dissolved oxygen measurement methods include iodometric method and Clark electrode method. Traditional measurement methods have their inherent steps and analysis methods, and there are many defects. The iodometric method, also known as the Winkler method or the standard method, is...

Claims

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Application Information

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IPC IPC(8): C08L25/08C08K3/08C08F2/22G01N21/64
Inventor 张科赵九蓬李文杰李垚
Owner HARBIN INST OF TECH
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