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Method for preparing hydrophilic ordered porous membrane material

A porous membrane and hydrophilic technology, applied in the field of preparation of hydrophilic ordered porous membrane materials, can solve the problems of increased cost, complicated post-processing, difficult operation, etc., and achieve the effect of less steps, simple operation and low price

Active Publication Date: 2019-04-09
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods either require polymers with special structures and complex synthesis, or require complex post-processing, which is difficult to operate and significantly increases the cost.

Method used

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  • Method for preparing hydrophilic ordered porous membrane material
  • Method for preparing hydrophilic ordered porous membrane material
  • Method for preparing hydrophilic ordered porous membrane material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] S1: Dissolve polylactic acid and dodecyltrimethylammonium chloride in chloroform, and prepare polymer and dodecyltrimethylammonium chloride solutions with concentrations of 20 mg / mL and 0.2 mg / mL, respectively;

[0034] S2: Pipette 40 μL of the above solution on the glass substrate, and place it on the rotating platform of the homogenizer;

[0035] S3: Pass the humid air through the test tube filled with water at a rate of 100L / h, and control the internal temperature of the homogenizer chamber to 24°C and the relative humidity to 80%, and at the same time adjust the homogenizer to start at a speed of 20rpm.

[0036] S4: After about 2 minutes, the solvent is completely volatilized, the homogenizer is stopped, and the substrate is taken out to obtain a hydrophilic ordered porous membrane.

[0037] Scanning electron microscope observation (with figure 1 ) shows that the surface of the porous membrane is all distributed with ordered microporous structures, the diameter of ...

Embodiment 2

[0040] S1: Dissolve polylactic acid and dodecyltrimethylammonium chloride in chloroform, and prepare polymer and dodecyltrimethylammonium chloride solutions with concentrations of 20 mg / mL and 1 mg / mL, respectively;

[0041] S2: Pipette 40 μL of the above solution on the glass substrate, and place it on the rotating platform of the homogenizer;

[0042] S3: Pass the humid air through the test tube filled with water at a rate of 100L / h, and control the internal temperature of the homogenizer chamber to 24°C and the relative humidity to 80%, and at the same time adjust the homogenizer to start at a speed of 20rpm.

[0043] S4: After about 2 minutes, the solvent is completely volatilized, the homogenizer is stopped, and the substrate is taken out to obtain a hydrophilic ordered porous membrane.

[0044] Scanning electron microscope observation (with figure 2 ) shows that the surface of the porous membrane is all distributed with ordered microporous structures, the diameter of t...

Embodiment 3

[0047] S1: Dissolve polylactic acid and dodecyltrimethylammonium chloride in chloroform, and prepare solutions with polymer and dodecyltrimethylammonium chloride concentrations of 30 mg / mL and 0.5 mg / mL, respectively;

[0048] S2: Pipette 80 μL of the above solution on the glass substrate, and place it on the rotating platform of the homogenizer;

[0049] S3: Pass the moist air passing through the test tube filled with water at a rate of 100L / h, and control the internal temperature of the homogenizer chamber to 26°C and the relative humidity to 80%, and at the same time adjust the homogenizer to start at a speed of 20rpm.

[0050] S4: After about 2 minutes, the solvent is completely volatilized, the homogenizer is stopped, and the substrate is taken out to obtain a hydrophilic ordered porous membrane.

[0051] Scanning electron microscope observation (with image 3 ) shows that the surface of the porous membrane is all distributed with ordered microporous structures, the diam...

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Abstract

The invention discloses a method for preparing a hydrophilic ordered porous membrane material. The method comprises the following steps: S1: dissolving a polymer and a cationic surfactant in an organic solvent to prepare a solution, wherein the mass ratio of the cationic surfactant to the polymer is 0.0015-0.1; S2: dripping the prepared solution on the surface of a base and placing the base on a rotating platform of a spin coater; S3: introducing air into the spin coater to enable the air to flow to the solution, controlling the velocity of the introduced air and the temperature and the relative humidity inside a chamber of the spin coater and starting the spin coater and controlling the rotation speed at the same time; and S4: after the organic solvent is completely volatilized, stoppingthe rotation of the spin coater and taking out the base to obtain the hydrophilic ordered porous membrane material. The method disclosed by the invention has the beneficial effects that the hydrophilic ordered porous film materials with different pore diameters are prepared by simply adjusting preparation parameters; and the method is simple in operation and low in preparation cost.

Description

technical field [0001] The invention relates to the field of polymer porous film materials, in particular to a method for preparing a hydrophilic ordered porous film material. Background technique [0002] Polymer ordered porous film materials refer to polymer materials with highly regular micro- or nano-scale pore structures on the surface. These highly ordered pore structures endow it with large specific surface area and spatial volume, low density, unique optical properties, surface roughness, etc. and other fields have a wide range of applications. [0003] since 1994 et al. used the Breath figure method to prepare the first polymer ordered porous film, this method has become the most commonly used method for preparing polymer ordered porous film materials due to its simplicity and high efficiency. [0004] Polymers used to prepare porous film materials need to have good film-forming properties, so these polymers are usually hydrophobic. In addition, the surface rou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/18C08L67/04C08K5/19
CPCC08J5/18C08J2367/04C08K5/19
Inventor 殷鸿尧冯玉军詹福星
Owner SICHUAN UNIV
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