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Hyperbranched polymer modified magnetic straw adsorbing material and preparation method thereof

A technology of hyperbranched polymers and adsorption materials, applied in alkali metal compounds, chemical instruments and methods, adsorption water/sewage treatment, etc., to achieve the effects of alleviating air pollution, increasing adsorption speed, and increasing adsorption capacity

Inactive Publication Date: 2017-08-04
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The magnetic straw adsorption material modified by the hyperbranched polymer in the present invention has the advantages of large adsorption capacity, fast adsorption speed, easy separation and recovery, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Soak 10 g of straw powder with a particle size of 80 mesh in 300 mL of NaOH solution with a mass fraction of 10% for 10 hours, then suction filter, wash until neutral and vacuum-dry to obtain pretreated straw; 5 g of pretreated straw Add to 300mL ethanol and stir, then add 8mL silane coupling agent γ-(2,3-glycidoxy)propyltrimethoxysilane, react at 60°C for 24h, wash the product with ethanol after the reaction, Remove the unreacted silane coupling agent, and finally vacuum dry for 24 hours to obtain the straw modified by the coupling agent; dissolve 10 g of hyperbranched polyethyleneimine in 100 mL of deionized water, and then add 2 g of the straw treated by the coupling agent, React at 60°C for 12 hours. After the reaction, the product was washed with deionized water, and finally vacuum-dried for 24 hours to obtain straw modified by hyperbranched polymer; mix 1g of straw modified by hyperbranched polymer with 100mL Fe 2+ / Fe 3+ The mixed solution is mixed, the concentr...

Embodiment 2

[0019] Soak 10 g of straw powder with a particle size of 80 mesh in 300 mL of NaOH solution with a mass fraction of 10% for 10 hours, then suction filter, wash to neutral and vacuum-dry to obtain pretreated straw; 5 g of pretreated straw Add to 300mL ethanol and stir, then add 10mL silane coupling agent 3-isocyanatopropyltriethoxysilane, react at 60°C for 24h, after the reaction, wash the product with ethanol to remove unreacted silane coupling agent, and finally vacuum-dried for 24 hours to obtain the straw modified by the coupling agent; 5g of hydroxyl-terminated hyperbranched polyester was dissolved in 100mL of dimethylformamide, and then 2g of the straw treated by the coupling agent was added, and the straw was heated at 40°C After the reaction was completed, the product was washed with dimethylformamide, and finally vacuum-dried for 24 hours to obtain straw modified by hyperbranched polymer; mix 1g of straw modified by hyperbranched polymer with 100mL Fe 2+ / Fe 3+ The mi...

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Abstract

The invention discloses a hyperbranched polymer modified magnetic straw adsorbing material and a preparation method thereof. The method comprises the following steps: sequentially modifying straws with a silane coupling agent and a hyperbranched polymer, and compounding the modified straws with an iron salt to prepare the hyperbranched polymer modified magnetic straw adsorbing material. A raw material used in the invention is agricultural waste plant straws, and the raw material has the advantages of wide sources, low price, non-toxicity, and no secondary pollution to water. The hyperbranched polymer modified magnetic straw adsorbing material has the characteristics of large adsorption capacity, fast adsorption speed, and easiness in separation and recovery.

Description

technical field [0001] The invention relates to a hyperbranched polymer modified magnetic straw adsorption material and a preparation method thereof, belonging to the field of environmental functional materials. Background technique [0002] With the rapid development of my country's industry, the problem of water pollution is becoming more and more serious, resulting in huge economic losses. At present, the pollutants in water bodies mainly include heavy metal ions and dyes and other refractory substances. Although some conventional water treatment methods have a certain removal effect on pollutants, these methods have problems such as large investment, high operating cost, troublesome operation and management, and easy to produce secondary pollution. Adsorption is an efficient method for removing pollutants in water bodies. Traditional adsorption materials, such as activated carbon, are expensive or difficult to recycle, which limits their application. Biomass-based ads...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/24B01J20/28B01J20/30C02F1/28
CPCB01J20/0229B01J20/24B01J20/28009B01J2220/4825C02F1/286
Inventor 王静静
Owner YANCHENG INST OF TECH
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