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Super-hydrophobic/super-oleophilic cotton cloth as well as preparation method and application thereof

A super-oleophilic and super-hydrophobic technology, used in textiles and papermaking, fiber treatment, plant fibers, etc., to achieve excellent self-cleaning performance, good oil-water separation effect, and low price

Inactive Publication Date: 2018-10-16
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are few reports on the application of polypyrrole and stearic acid as cotton surface treatment agents for the treatment of oil stains

Method used

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  • Super-hydrophobic/super-oleophilic cotton cloth as well as preparation method and application thereof
  • Super-hydrophobic/super-oleophilic cotton cloth as well as preparation method and application thereof
  • Super-hydrophobic/super-oleophilic cotton cloth as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Firstly, the cotton was placed in an ultrasonic wave filled with absolute ethanol for 0.5 h, and the cotton was placed in an ultrasonic wave filled with acetone for 3 h, then taken out and dried at 100 °C for later use; the washed cotton cloth (CF) was immersed in a uniform Anhydrous FeCl 3 After being immersed in ethanol solution (25mg / mL) for 10min, take it out and let it dry naturally; 3 Put the sponge into a closed container containing pyrrole monomer for 0.5h, and polymerize a layer of polypyrrole in the gas phase at normal temperature and pressure to form a cotton cloth (CF@PPy) coated with polypyrrole; finally soak the CF@PPy cotton cloth in 0.3 In the stearic acid ethanol solution of M, heat to 50 DEG C and react for 3h; After the reaction finishes, wash off excess material on the cotton cloth with ethanol, place in 60 DEG C of oven and dry 5h, obtain superhydrophobic / superoleophilic cotton cloth ( CF@PPy@SA), the preparation process is as follows figure 1 sho...

Embodiment 2

[0036] Firstly, the cotton was placed in an ultrasonic wave containing absolute ethanol for 2 hours, and the cotton was placed in an ultrasonic wave containing acetone for 2 hours, then taken out, and dried at 80°C for later use; the washed cotton cloth (CF) was immersed in a uniform Water FeCl 3 After 5min in ethanol solution (50mg / mL), take it out and let it dry naturally; 3 The sponge was placed in a closed container containing pyrrole monomer for 2 hours, and a layer of polypyrrole was gas-phase polymerized at normal temperature and pressure to form a cotton cloth (CF@PPy) coated with polypyrrole; finally, the CF@PPy cotton cloth was immersed in 0.1M Stearic acid ethanol solution, heated to 60 ° C for 1 h. After the reaction, the excess substance on the cotton cloth was washed with ethanol, and dried in an oven at 60 °C for 2 h to obtain a superhydrophobic / superlipophilic cotton cloth (CF@PPy@SA). figure 2 It is a scanning electron microscope photo of cotton cloth; im...

Embodiment 3

[0038] Firstly, put the cotton cloth in an ultrasonic wave filled with absolute ethanol for 3 hours, then place the cotton cloth in an ultrasonic wave filled with acetone for 0.5 h, then take it out, and dry it at 60°C for later use. The washed cotton cloth (CF) is immersed in a uniform Anhydrous FeCl 3 After being immersed in ethanol solution (10mg / mL) for 20min, take it out and let it dry naturally; 3 The sponge was placed in a closed container containing pyrrole monomer for 5 hours, and a layer of polypyrrole was gas-phase polymerized at normal temperature and pressure to form a cotton cloth (CF@PPy) coated with polypyrrole; finally, the CF@PPy cotton cloth was soaked in 0.05M stearic acid ethanol solution, heated to 80 ° C for 0.5 h; after the reaction, wash off excess substances on the cotton cloth with ethanol. Dry in an oven at 100°C for 1 h to obtain a superhydrophobic / superoleophilic cotton cloth (CF@PPy@SA).

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Abstract

The invention discloses super-hydrophobic / super-oleophilic cotton cloth as well as a preparation method and application thereof. The super-hydrophobic / super-oleophilic cotton cloth is mainly preparedby carrying out polypyrrole coating on an infiltrated FeCl3 solution to form a rough surface of the cotton cloth and using residual FeCl3 on the cotton cloth to react with low surface energy stearic acid to generate hydrophobic ferric stearate precipitate on the surface of the cotton cloth. The water contact angle of the super-hydrophobic / super-oleophilic cotton cloth in air is greater than 150 degrees and the sliding angle is smaller than 10 degrees. In addition, oil is extremely easy to penetrate; the super-hydrophobic / super-oleophilic cotton cloth shows good super-hydrophobicity and super-oleophilic property; besides, the super-hydrophobic / super-oleophilic cotton cloth has the advantages of simple preparation process, lower material cost, greenness and environment friendliness and excellent self-cleaning ability.

Description

technical field [0001] The invention belongs to the technical field of functional materials, and in particular relates to a superhydrophobic / superoleophilic cotton cloth and a preparation method and application thereof. Background technique [0002] Superhydrophobic / superoleophilic materials are also known as "oil-removing" oil-water separation materials, which can selectively adsorb or permeate the oil phase, but repel the water phase at the same time. In 2004, Jiang Lei's research group used a simple spray-drying method to prepare a superhydrophobic / super-oleophilic steel mesh for the first time. The prepared steel mesh can isolate oil in an oil-water mixture. Since then, superhydrophobic / superoleophilic materials have been extensively studied. At present, there have been many reports on three-dimensional porous oil-adsorbing oil-water separation materials, such as three-dimensional metal foams, polymer sponges, graphene sponges, cellulose sponges, etc. These materials ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/37D06M13/188D06M101/06
CPCD06M13/188D06M15/37D06M2101/06D06M2200/12
Inventor 陈久存尤慧金燕子
Owner SOUTHWEST UNIVERSITY
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