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A method for detecting organic solvent content in mixed solution

A technology of organic solvents and mixed solutions, applied in measuring devices, transmittance measurement, instruments, etc., can solve the problems of high cost, long detection time, and inability to realize real-time detection, and achieve low cost, real-time and accurate detection, and simple method Fast and Intuitive Effects

Active Publication Date: 2022-01-18
JIANGSU JICUI INTELLIGENT LCD TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can obtain highly accurate detection data, the process is cumbersome, the detection time is long, the cost is high, and the popularity is low, so real-time detection cannot be realized.

Method used

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  • A method for detecting organic solvent content in mixed solution
  • A method for detecting organic solvent content in mixed solution
  • A method for detecting organic solvent content in mixed solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Preparation contains 1g reactive liquid crystal RM257, 9g non-reactive liquid crystal 5CB and 100mg photoinitiator DMPAP liquid crystal mixture (reactive liquid crystal RM257 accounts for the mass percent of liquid crystal mixture is 9.9%), it is made into polymer ellipse according to the above steps The sphere, wherein the micropore diameter of the SPG film is 10 microns, the liquid crystal conformation changing agent is Pluronic, the continuous phase is water, and the mass percent concentration of the liquid crystal conformation changing agent in water is 1%. Such as image 3 As shown, the mixed solution of polymer ellipsoid in different concentrations of tetrahydrofuran and deionized water (the volume percentage of tetrahydrofuran is a: 0%, b: 25%, c: 50%, d: 75%, e: 100%) have different swelling structures. At the same time, it can be seen from the figure that with the increase of THF content, the long diameter of the polymer ellipsoid basically remains unchanged, ...

Embodiment 2

[0048] Preparation contains 1g reactive liquid crystal RM257, 9g non-reactive liquid crystal 5CB and 100mg photoinitiator DMPAP liquid crystal mixture (reactive liquid crystal RM257 accounts for the mass percent of liquid crystal mixture is 9.9%), it is made into polymer ellipse according to the above steps Ball, wherein the micropore diameter of SPG film is 20 microns, the liquid crystal conformation changing agent is PVP, the continuous phase is glycerol / water (9:1) solution, and the mass percentage concentration of the liquid crystal conformation changing agent in the continuous phase is 1%. The structure of the polymer ellipsoid in the dry state is as follows Figure 5 The SEM image is shown. Similarly, the polymer ellipsoid has different swelling structures in the mixed solutions of different proportions of THF and deionized water, and the relationship curve of its average aspect ratio to the content of THF in the mixed solution is as follows Image 6 shown. It can be s...

Embodiment 3

[0050] Liquid crystal mixtures containing reactive liquid crystal RM257, non-reactive liquid crystal 5CB and 100 mg photoinitiator DMPAP were prepared respectively. The total mass of liquid crystals of RM257 and 5CB was 10 g, and the percentages of RM257 to the total mass of liquid crystals were 10%, 30%, and 40% respectively (reactive liquid crystal RM257 accounts for 9.9%, 29.7%, 39.6% of the mass percent of liquid crystal mixture respectively), it is made into polymer ellipsoid according to the above steps, wherein the SPG film pore diameter is 10 microns, and the liquid crystal conformation changing agent It is Pluronic, the continuous phase is water, and the mass percent concentration of the liquid crystal conformation changing agent in the continuous phase is 1%. Similarly, polymer ellipsoids with different degrees of crosslinking (that is, the percentage of reactive liquid crystal RM257 in the total mass of liquid crystal) have different swelling structures in mixed solu...

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Abstract

The invention discloses a method for detecting the content of an organic solvent in a mixed solution, comprising the following steps: contacting a polymer ellipsoid with a mixed solution, wherein the polymer ellipsoid has an internal structure of a bipolar conformation, and the polymer ellipsoid is in the Different solutions show different swelling structures; measure the performance parameters of the polymer ellipsoid; convert the performance parameters of the polymer ellipsoid into organic solvent according to the regression curve between the predicted performance parameters of the polymer ellipsoid and the organic solvent content solvent content. The detection method disclosed by the invention uses a polymer ellipsoid with a bipolar conformation internal structure to detect the content of the organic solvent in the mixed solution. The method is simple, fast, intuitive, low in cost, and can realize real-time and accurate detection.

Description

technical field [0001] The invention relates to the field of organic solvent detection, in particular to a method for quickly detecting the content of organic solvents in a mixed solution. Background technique [0002] At present, water resource pollution is a problem that countries all over the world face and urgently needs to be solved. my country's water resources are also facing serious pollution problems. Among them, the residual organic solvent is one of the main causes of water pollution, and these residual organic solvents are easy to accumulate in the microorganisms that treat wastewater, and are difficult to metabolize and excrete. They have inhibitory and toxic effects on microorganisms, making it difficult to carry out biochemical treatment of wastewater. . [0003] Organic solvents are indispensable chemical reagents in the production and application of chemicals, pesticides, and pharmaceuticals, among which ethanol, acetone, tetrahydrofuran, and dimethylformam...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/21G01N21/59G01N21/552
CPCG01N21/21G01N21/59G01N21/552
Inventor 陆嘉伟王睿李昂N·L·阿伯特
Owner JIANGSU JICUI INTELLIGENT LCD TECH CO LTD
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