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A kind of preparation method of test paper for formaldehyde detection

A test paper and formaldehyde technology, applied in the field of preparation of test paper for formaldehyde detection, can solve the problems of inability to guarantee the stability of nanoparticles, poor performance of probe molecule wrapping, etc., to optimize process parameters pH and temperature, and to achieve the best detection effect. The effect of enhancing stability

Active Publication Date: 2020-11-24
安徽瑞柏新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, how to device such a nanoparticle solution has encountered a series of difficulties in the process of deviceization, for example, the polymer carrier has poor wrapping performance on the probe molecules, and the probe molecules are easily separated from the polymer carrier. Migrate out, so the stability of the nanoparticles cannot be guaranteed

Method used

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  • A kind of preparation method of test paper for formaldehyde detection
  • A kind of preparation method of test paper for formaldehyde detection
  • A kind of preparation method of test paper for formaldehyde detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Synthetic probe molecule KD-XA01

[0029] Dissolve 3.24g of 1-phenyl-1,3-butanedione in 60ml of benzene, add 3.08g of ammonium acetate and 1ml of acetic acid, reflux at 80°C for 12 hours in a nitrogen atmosphere to obtain the product, wash and dry the reactant, and Solvent was removed.

[0030] (2) Synthesis of ternary photocrosslinkable random copolymer P(St-co-VM-co-AMPS)

[0031] Dissolve 7.8g of AMPS monomer, 2.4g of styrene St, and 1.2g of VM monomer in 15ml of DMF, stir to pass N2, add AET0.34g and AIBN0.16g after 15min, and pass N2 for 15min, then seal the bottle mouth, and transfer to 70℃ In an oil bath, after 8 hours of reaction, the cup substrate was precipitated in acetone, dissolved in water, dialyzed and freeze-dried to obtain the copolymer P(St-co-VM-co-AMPS).

[0032] (3) Preparation of nanoparticle solution

[0033] Weigh 0.03g of KD-XA01, dissolve it in 10ml of DMF, weigh 5mg of polymer P(St-co-VM-co-AMPS), dissolve it in 100ml of water, slowly a...

Embodiment 2

[0039] The pH in step (5) in Example 1 is set to 3.65, and the others remain unchanged.

Embodiment 3

[0041] The pH in step (5) in Example 1 is set to 4.68, and the others are all unchanged.

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Abstract

The invention discloses a preparation method of test paper for formaldehyde detection. A ternary photocrosslinking type random copolymer P(St-co-VM-co-AMPS) is utilized for loading and coating a formaldehyde probe molecule, photocrosslinking type polymer nano particles loading the formaldehyde probe molecule are prepared, the nano particles are subjected to crosslinking through ultraviolet light irradiation, the probe molecule is fixed, the stability of the probe molecule is enhanced, the nano particle solution is printed on filter paper at the certain pH value and temperature through an ink-jet printing technique, a coating is formed, and the test paper for the formaldehyde detection is obtained.

Description

technical field [0001] The invention belongs to the field of polymer materials and environmental detection, and in particular relates to a preparation method of test paper for formaldehyde detection. Background technique [0002] Formaldehyde is irritating and suffocating at room temperature. It is a colorless gas that is extremely harmful to human body. [0003] In recent years, with the advancement of chemical detection and analysis technology, the rapid detection of formaldehyde has also been developed rapidly. Formaldehyde test paper is a commonly used detection method, but the test paper has a short storage period due to the easy migration of probe molecules. [0004] Patent CN103819693A reports a method for preparing formaldehyde-sensitive nanoparticles, specifically using polymer P (St-alt-Man) as a carrier, and wrapping the formaldehyde detection probe in the polymer carrier to solve the instability of small molecule probes problem. [0005] However, how to device ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/78
CPCG01N21/78
Inventor 杨珍珍王雪力
Owner 安徽瑞柏新材料有限公司