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Underwater self-cleaning superoleophobic mineralized fibrous film and preparation method thereof

A fiber membrane and super-oleophobic technology, applied in chemical instruments and methods, fiber treatment, separation methods, etc., to achieve stable oleophobic performance, diverse raw materials, economical and convenient effects

Inactive Publication Date: 2014-08-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Therefore, it remains a challenge to design underwater self-cleaning membranes that are easy to fabricate in large areas and possess stable and long-lasting superoleophobic properties.

Method used

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  • Underwater self-cleaning superoleophobic mineralized fibrous film and preparation method thereof
  • Underwater self-cleaning superoleophobic mineralized fibrous film and preparation method thereof
  • Underwater self-cleaning superoleophobic mineralized fibrous film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1) cellulose acetate is dissolved in a mixed solvent of N, N-dimethylacetamide and acetone to obtain a cellulose acetate solution, wherein the mass fraction of cellulose acetate is 12%, N, N - The volume ratio of dimethylacetamide to acetone is 1:2; add sodium polybenzenesulfonate whose mass is 6% of the mass of cellulose acetate solution as a mineralization regulator, and stir to make it uniformly dispersed in cellulose acetate In the ester solution, a mixed spinning solution is obtained; wherein the mass ratio of sodium polybenzenesulfonate to cellulose acetate is 1:2.

[0051] 2) Put the mixed spinning solution containing cellulose acetate and sodium polybenzenesulfonate obtained in step 1) into a syringe, connect the syringe to a syringe pump, and adjust the flow rate of the mixed spinning solution to 0.5ml / h. A grounded aluminum foil is placed 20cm away from the needle of the syringe, and a 20kV high-voltage electrostatic field is applied between the needle of the ...

Embodiment 2

[0055] 1) cellulose acetate butyrate is dissolved in a mixed solvent of acetic acid and acetone to obtain a cellulose acetate butyrate solution, wherein the mass fraction of cellulose acetate butyrate is 50%, and the volume ratio of acetic acid to acetone is 1 : 1; Adding sodium polybenzenesulfonate with a quality of 10% of the cellulose acetate butyrate solution quality as a mineralization regulator, making it evenly dispersed in the cellulose acetate butyrate solution through stirring, to obtain a mixed spinning solution; Wherein the mass ratio of sodium polybenzenesulfonate to cellulose acetate butyrate is 1:5.

[0056] 2) Put the mixed spinning solution containing cellulose acetate butyrate and sodium polybenzenesulfonate obtained in step 1) into a syringe, connect the syringe to a syringe pump, and adjust the flow rate of the mixed spinning solution to 0.5ml / h. A grounded aluminum foil is placed 20cm away from the needle of the syringe, and a 20kV high-voltage electrostat...

Embodiment 3

[0060]1) dissolving cellulose phthalate in a mixed solvent of ethanol and dichloromethane to obtain a cellulose phthalate solution, wherein the mass fraction of cellulose phthalate is 6%, The volume ratio of ethanol to methylene chloride is 1:1; sodium dodecylbenzenesulfonate with a mass of 0.1% of the mass of cellulose phthalate solution is added as a mineralization regulator, and it is uniformly dispersed in the In the cellulose phthalate solution, a mixed spinning solution is obtained; wherein the mass ratio of sodium dodecylbenzenesulfonate to cellulose phthalate is 1:60.

[0061] 2) the mixed spinning solution containing cellulose phthalate and sodium dodecylbenzenesulfonate obtained in step 1) is placed in the syringe, and the syringe is connected to the syringe pump, and the flow velocity of the mixed spinning solution is adjusted to 0.5ml / h. A grounded aluminum foil is placed 20cm away from the needle of the syringe, and a 20kV high-voltage electrostatic field is appl...

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Abstract

The invention belongs to the field of self-cleaning organic / inorganic composite films, and particularly relates to an underwater self-cleaning superoleophobic mineralized fibrous film with a non-woven fabric structure and a preparation method of the underwater self-cleaning superoleophobic mineralized fibrous film. The underwater self-cleaning superoleophobic mineralized fibrous film with the non-woven fabric structure is produced by the following steps: a polymer fibrous film with the non-woven fabric structure and containing a mineralizing regulator is obtained by an electrostatic spinning method; the fiber surface of the polymer fibrous film is controllably mineralized by a biomineralization method so as to obtain the organic / inorganic composite underwater self-cleaning superoleophobic mineralized fibrous film with good stability. In air, the invasion of the film surface is hydrophilic; in water, the invasion of the surface is superoleophobic; and in water, the contact angle of the film surface to oil is more than 150 degrees.

Description

technical field [0001] The invention belongs to the field of self-cleaning organic / inorganic composite membranes, in particular to a super-oleophobic underwater self-cleaning organic / inorganic composite mineralized fiber membrane with a non-woven structure and a preparation method thereof. Background technique [0002] In recent years, due to the continuous occurrence of oil spills, the current situation of oil pollution in the ocean has become increasingly serious. The long-term and large-scale impact of oil pollution on the environment, ecology, climate and even the economy has become an urgent need for people in modern industrial society. One of the major problems to be solved. In order to reduce the harm of oil pollution, various oil-water separation materials or oil-absorbing materials have been widely reported, such as "carbon nanotube sponge" (X.Gui, D. Wu et al.Carbon nanotube sponges), "Environmental science & technology" (Environmental science & technology, 2009, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01D5/00D04H3/02D01F1/10D06M11/76B01D17/022
Inventor 江雷周洁王树涛
Owner INST OF CHEM CHINESE ACAD OF SCI
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