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Method for detecting polymer content in sodium methacrylate monomer salt by using HPLC (High Performance Liquid Chromatography)

A technology of sodium methacrylate and sodium polyacrylate, applied in the field of analytical chemistry, can solve the problems of no detection method, no sodium methacrylate, etc., and achieve the effects of good repeatability, strong selectivity and high sensitivity

Active Publication Date: 2015-12-30
湖北欣恺生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, there is no standard detection method for sodium methacrylate in my country at present, and there is no report on its detection method in the literature. It is imperative to establish a fast, accurate and sensitive detection method for sodium methacrylate in my country.

Method used

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  • Method for detecting polymer content in sodium methacrylate monomer salt by using HPLC (High Performance Liquid Chromatography)
  • Method for detecting polymer content in sodium methacrylate monomer salt by using HPLC (High Performance Liquid Chromatography)
  • Method for detecting polymer content in sodium methacrylate monomer salt by using HPLC (High Performance Liquid Chromatography)

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Experimental program
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Effect test

Embodiment 1

[0025] 1. Instruments and conditions

[0026] High performance liquid chromatography: Beijing Innovation Tongheng 3000 high performance liquid chromatography system and workstation

[0027] Chromatographic column: InertexC18, 4.6×250mm, 5μm

[0028] Mobile phase: methanol-water (45:55)

[0029] Flow rate: 1.0mL / min Column temperature: 30°C

[0030] Detection wavelength: 225nm

[0031] Injection volume: 10 μL.

[0032] 2. Experimental steps

[0033] (1) Preparation of reference substance solution: Weigh 10mg of sodium polyacrylate solid into a small beaker, add 1-2ml of pure methanol solution, stir to completely disperse the sodium polyacrylate solid, then add 35-45ml of water to dissolve it Dissolve and stir evenly, pour the above-mentioned solution into a 100ml volumetric flask, scrub the small beaker several times with a methanol:water ratio of 45:55, and pour the scrubbed solution into a 100ml volumetric flask , until the amount of the solution reaches 100ml, take 5.0...

Embodiment 2

[0039] 1. Instruments and conditions

[0040] High performance liquid chromatography: Beijing Innovation Tongheng 3000 high performance liquid chromatography system and workstation

[0041] Chromatographic column: InertexC18, 4.6×250mm, 5μm

[0042] Mobile phase: methanol-water (50:50)

[0043] Flow rate: 0.8mL / min Column temperature: 25°C

[0044] Detection wavelength: 220nm

[0045] Injection volume: 10 μL.

[0046] 2. Experimental steps

[0047] (1) Preparation of reference substance solution: Weigh 10mg of sodium polyacrylate solid into a small beaker, add 1-2ml of pure methanol solution, stir to completely disperse the sodium polyacrylate solid, then add 35-45ml of water to dissolve it Dissolve and stir evenly, pour the above-mentioned solution into a 100ml volumetric flask, scrub the small beaker several times with a methanol:water ratio of 50:50, and pour the scrubbed solution into a 100ml volumetric flask , until the amount of the solution reaches 100ml, take 5.0...

Embodiment 3

[0053] 1. Instruments and conditions

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Abstract

The invention provides a method for detecting the polymer content in a sodium methacrylate monomer salt by using HPLC (High Performance Liquid Chromatography). According to the method provided by the invention, Inerte*C18, 4.6*250mm, 5-micrometer chromatographic column is selected and used, a moving phase is water-methanol, wherein a rate of water to methanol is (50 to 55): (45 to 50), a flow velocity of the moving phase is 0.5 to 1.0mL / min, a column temperature is 25 to 30 DEG C, a detection wavelength is 220nm to 230nm, and an injection volume is 10 micrometers m to 20 micrometers. The method provided by the invention comprises the following steps: 1, preparing a reference solution; 2, preparing a sodium methacrylate sample solution; 3, arranging the moving phase, and detecting the wavelength and the column temperature; 4, taking the prepared solution, carrying out chromatographic analysis and recording a chromatogram map. The method provided by the invention is concise in step, strong in selectivity, good in repeatability and capable of accurately analyzing polymers in the sodium methacrylate monomer salt and better controlling the quality of the sodium methacrylate monomer salt.

Description

technical field [0001] The invention relates to the field of analytical chemistry, in particular to a method for detecting polymer content in sodium methacrylate monomer salt by HPLC. Background technique [0002] Sodium methacrylic acid is mainly used as a dispersant and an auxiliary material for coatings. It is mainly prepared by combining methacrylic acid and sodium salt under certain conditions. Since the molecular structure of raw material olefins is prone to polymerization, it is necessary to add an appropriate amount of retarder during the reaction process. The polymerization agent prevents the polymerization of monomers, and the key steps in the product production reaction process need to control strict reaction conditions, but in order to better control the quality and produce products that meet customer requirements, it is necessary to find a convenient, fast and accurate detection method Method to measure the monomer and polymer content of the product. [0003] L...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N30/02
Inventor 蒋怡雯李廷明徐洪宣代堂慧陆锋高新锋白超锋董平
Owner 湖北欣恺生物科技有限公司
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