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A preparation method of binary copolymerized fluorescent microsphere emulsion for measuring dissolved oxygen concentration

A binary copolymerization fluorescence, dissolved oxygen concentration technology, applied in the direction of fluorescence/phosphorescence, material excitation analysis, etc., can solve the problems of easy leakage and stability of indicators, low oxygen sensitivity, and non-environmental solvents, etc., to achieve long-term preservation, Excellent monodispersity and high sensitivity

Active Publication Date: 2016-11-30
HARBIN INST OF TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The present invention aims to solve the problems of easy leakage of existing indicator molecules, poor stability, low sensitivity to oxygen, poor dispersibility, and unenvironmental protection of solvents used in existing methods, and provides a binary copolymerized fluorescent microsphere for measuring dissolved oxygen concentration Preparation method of emulsion

Method used

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  • A preparation method of binary copolymerized fluorescent microsphere emulsion for measuring dissolved oxygen concentration
  • A preparation method of binary copolymerized fluorescent microsphere emulsion for measuring dissolved oxygen concentration
  • A preparation method of binary copolymerized fluorescent microsphere emulsion for measuring dissolved oxygen concentration

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specific Embodiment approach 1

[0031] Embodiment 1: A method for preparing a binary copolymerized fluorescent microsphere emulsion for measuring dissolved oxygen concentration in this embodiment is carried out in the following steps:

[0032] Mix methyl methacrylate and trifluoroethyl methacrylate to obtain a copolymer emulsion, then add octaethylporphyrin platinum to the copolymer emulsion, mix well and then add azobisisobutyronitrile and dodecane Sodium sulfate, stir for 0.8h to 1.2h at a temperature of 35 to 45°C and a rotational speed of 250r / min to 300r / min, add ultrapure water and ultrasonicate at room temperature and at an ultrasonic frequency of 20kHz to 45kHz 2min to 4min, and then reflux reaction at a temperature of 60-70°C for 4.5h-5.5h to obtain a binary copolymerized fluorescent microsphere emulsion;

[0033] The volume ratio of the methyl methacrylate to trifluoroethyl methacrylate is 1: (1.5-2.5);

[0034] The ratio of the volume sum of the methyl methacrylate and trifluoroethyl methacrylate...

specific Embodiment approach 2

[0038] Embodiment 2: This embodiment is different from Embodiment 1 in that: the volume ratio of methyl methacrylate to trifluoroethyl methacrylate is 1:2. Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0039] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the ratio of the volume sum of methyl methacrylate and trifluoroethyl methacrylate to the mass of platinum octaethylporphyrin For 9mL: 8mg. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a preparation method of a binary copolymerization fluorescent microsphere emulsion for measuring the dissolved oxygen concentration, relates to a preparation method of the binary copolymerization fluorescent microsphere emulsion, and aims to solve the problems that the conventional indicator molecules are easy to leak, poor in stability, not high in sensitivity to oxygen and poor in dispersivity, and solvents used in the conventional method is not environment-friendly. The preparation method comprises the following steps: mixing methyl methacrylate and trifluoroethyl methacrylate to obtain a copolymer emulsion; then, adding platinum octaethylporphyrin into the copolymer emulsion, mixing uniformly, then, adding azodiisobutyronitrile and lauryl sodium sulfate, stirring under the conditions that the temperature is 35-45 DEG C and the rotating speed is 250-300 r / min, adding ultrapure water, performing ultrasonic treatment at the room temperature and with the ultrasonic frequency of 20-45 kHz, and performing reflux reaction at the temperature of 60-70 DEG C, so as to obtain the binary copolymerization fluorescent microsphere emulsion.

Description

technical field [0001] The invention relates to a preparation method of binary copolymerized fluorescent microsphere emulsion. Background technique [0002] As we all know, living organisms can only maintain their various physiological functions when there is a continuous supply of oxygen. The lack of oxygen will not only threaten human beings, but also seriously threaten the survival of other organisms in nature. Oxygen is not only closely related to the survival of humans, animals and plants, but also closely related to chemical, biochemical reactions and physical phenomena. Many industrial processes involve redox reactions, many of which directly utilize the abundant oxygen in the air as an oxidant. In the production of synthetic ammonia, oxygen is mainly used for the oxidation of feed gas, for example, the high-temperature cracking of heavy oil, and the gasification of coal powder, etc., to strengthen the process and increase the output of fertilizers. In the process o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/22C08F2/26G01N21/64
Inventor 张科赵九蓬张鸿林李垚
Owner HARBIN INST OF TECH
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