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A kind of probe modified polyquaternium composite material and its preparation method and application

A polyquaternary ammonium salt and composite material technology, which is applied in the direction of analysis by chemical reaction of materials, chemical instruments and methods, and material analysis by observing the impact on chemical indicators, etc., can solve the problem of limited binding capacity of target metal ions. , The number of materials per unit surface is low, and the composite materials are difficult to pure water, so as to achieve the effects of green environmental protection, low cost and simple equipment in the detection process.

Inactive Publication Date: 2020-06-26
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the probe unit often has a large size and is usually grafted on the surface of a solid material in the form of a monomolecular layer, the number of sites on the surface of the material unit is low, resulting in a very limited binding capacity for the target metal ion.
Moreover, since the surface-grafted probe units often contain large conjugated structures and strong hydrophobicity, it is difficult for the composite to be directly applied in pure aqueous phase, thus severely limiting its practical application.

Method used

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  • A kind of probe modified polyquaternium composite material and its preparation method and application
  • A kind of probe modified polyquaternium composite material and its preparation method and application
  • A kind of probe modified polyquaternium composite material and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Synthesis of natural fiber / benzophenone complex (NFs / BP): Weigh 100mg of NFs and place in 20mL of ethanol solution containing 0.1% BP, oscillate ultrasonically for 5min, rotary evaporate, and vacuum dry at 70°C to obtain NFs / BP;

[0044] Synthetic salicylaldehyde polyquaternium monomer / natural fiber composite (SAPQA@NFs): Weigh 200mg NFs / BP and 200mg SAPQA into 2mL deionized water, fill with N 2 30min, under the condition of 50℃, irradiate with ultraviolet lamp for 1h, filter with suction, wash with deionized water and ethanol, and dry under vacuum at 70℃ to obtain SAPQA@NFs;

[0045] Synthetic structure such as figure 1 The probe-modified polyquaternium composite material MA-SAPQA@NFs shown: Weigh 200mgSAPQA@NFs and 20mg MA in 20mL of absolute ethanol, heat to reflux at 85°C, react for 8h, cool to room temperature, and filter with suction , and washed with absolute ethanol, and dried in vacuum to obtain the probe-modified polyquaternium composite material MA-SAPQA@NF...

Embodiment 2

[0074] Synthesis of NFs / BP: Weigh 60 mg of NFs and place in 15 mL of ethanol solution containing 0.1% BP, sonicate for 5 min, rotary evaporate, and vacuum-dry at 70°C to obtain NFs / BP;

[0075] Synthesis of SAPQA@NFs: Weigh 80mg NFs / BP and 110mg SAPQA into 4mL deionized water, fill with N 2 30min, under the condition of 45°C, irradiate with ultraviolet light for 45min, filter with suction, wash with deionized water and ethanol, and dry in vacuum at 70°C to obtain SAPQA@NFs;

[0076] Synthesis of probe-modified polyquaternium composite material MA-SAPQA@NFs: Weigh 120mg SAPQA@NFs and 30mg MA into 5mL absolute ethanol, heat to reflux at 80°C, react for 7h, cool to room temperature, and filter with suction. And washed with absolute ethanol, vacuum-dried to obtain the probe-modified polyquaternium composite material MA-SAPQA@NFs.

Embodiment 3

[0078] Synthesis of NFs / BP: Weigh 1 g of NFs and place in 100 mL of ethanol solution containing 0.1% BP, sonicate for 5 min, rotary evaporate, and vacuum dry at 70°C to obtain NFs / BP;

[0079] Synthesis of SAPQA@NFs: Weigh 1.1g NFs / BP and 1.2g SAPQA into 10mL deionized water, fill with N 2 30min, under the condition of 55°C, irradiate with ultraviolet light for 75min, filter with suction, wash with deionized water and ethanol, and dry in vacuum at 70°C to obtain SAPQA@NFs;

[0080] Synthesis of probe-modified polyquaternium composite material MA-SAPQA@NFs: Weigh 1.3g SAPQA@NFs and 0.4g MA in 60mL absolute ethanol, heat to reflux at 78°C, react for 10h, cool to room temperature, pump Filtered, washed with absolute ethanol, and dried in vacuum to obtain the probe-modified polyquaternium composite material MA-SAPQA@NFs.

[0081] The probe-modified polyquaternary ammonium salt composite material MA-SAPQA@NFs prepared by the present invention improves the water solubility of the h...

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Abstract

The invention provides a probe modified polyquaternium composite material. Natural fibers are taken as substrates, and the composite material is obtained by polymerizing quaternary ammonium salts andamino compounds using a photo initiator. The invention further provides a preparation method of the probe modified polyquaternium composite material. The method comprises the steps that an ethanol solution of the photo initiator is used for soaking the natural fibers, ultrasound oscillation, evaporation and drying are conducted, and natural fiber / photo initiator compounds are obtained; the quaternary ammonium salts and the natural fiber / photo initiator compounds are added to deionized water, N2 is added to the deionized water, ultraviolet illumination and suction filtration are conducted, washing is conducted using the deionized water and the ethanol, drying is conducted, and quaternary ammonium salt / natural fiber compounds are obtained; the quaternary ammonium salt / natural fiber compoundsare added to absolute alcohol to be heated, washed and dried, and the probe modified polyquaternium composite material is obtained. The probe modified polyquaternium composite material has the advantages that heavy metal ions in an aqueous phase can be detected and cleared.

Description

technical field [0001] The invention relates to the field of detection and removal of heavy metal ions, in particular to a probe-modified polyquaternary ammonium salt composite material and a preparation method and application thereof. Background technique [0002] In recent years, due to the outstanding advantages of using immobilized probe composite materials for detection and adsorption of target heavy metal ions, such as low cost, high efficiency, and reusability, it has excellent application prospects in the fields of water quality evaluation and sewage purification. However, since the probe unit often has a large size and is usually grafted on the surface of a solid material in the form of a monolayer, the number of sites on the surface of the material unit is low, which leads to a very limited binding capacity for the target metal ion. . Moreover, since the surface-grafted probe units often contain large conjugated structures and strong hydrophobicity, it is difficul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/28G01N21/78C02F101/20
CPCC02F1/285C02F2101/20G01N21/78
Inventor 高强刘闫谢金凤
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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