CO2 responsive regular mesh material and preparation method thereof

A responsive, porous membrane technology, applied in the field of CO2 responsive ordered porous membrane materials, can solve the problems of complex synthesis of diblock copolymers, a large investment of time and energy, and increased costs, achieving high cost performance, improved efficiency, low cost effect

Active Publication Date: 2018-11-20
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the synthesis of functional diblock copolymers is very complicated and cumbersome, and requires a lot of time and effort
In addition, if it is necessary to adjust the size of the pore structure on the surface of the porous membrane or the surface wettability CO 2 Response level, it is also necessary to design and synthesize a series of copolymers with different block ratios, the workload is very large, and the cost will be significantly increased

Method used

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  • CO2 responsive regular mesh material and preparation method thereof
  • CO2 responsive regular mesh material and preparation method thereof
  • CO2 responsive regular mesh material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Dissolve polylactic acid and 2,4,6-tris(N,N-dimethyl-1,3-propanediamino)-1,3,5-triazine in chloroform to prepare polymerization and 2,4,6-tris(N,N-dimethyl-1,3-propanediamino)-1,3,5-triazine with concentrations of 20 mg / mL and 0.05 mg / mL;

[0038] (2) Take 80 μL of the above solution and drop it on the glass substrate, and place it on the rotating platform of the homogenizer;

[0039] (3) Air is introduced at a rate of 100 L / h, and the temperature inside the chamber of the homogenizer is controlled to be 22° C., and the relative temperature is 70%. At the same time, the homogenizer is started and the rotational speed is controlled to be 20 rpm.

[0040] (4) After about 2 minutes, the solvent is completely volatilized, the homogenizer is stopped, and the substrate is taken out to obtain an ordered porous film.

[0041] Optical microscope observation (attached figure 1 ) shows that the surface of the porous membrane is all distributed with ordered microporous struct...

Embodiment 2

[0043] (1) Dissolve polylactic acid and 2,4,6-tris(N,N-dimethyl-1,3-propanediamino)-1,3,5-triazine in chloroform to prepare polymerization and 2,4,6-tris(N,N-dimethyl-1,3-propanediamino)-1,3,5-triazine at concentrations of 20 mg / mL and 1.0 mg / mL;

[0044] (2) Take 80 μL of the above solution and drop it on the glass substrate, and place it on the rotating platform of the homogenizer;

[0045] (3) Air is introduced at a rate of 100 L / h, and the internal temperature of the homogenizer chamber is controlled to be 22° C., and the relative temperature is 70%. At the same time, the motor of the homogenizer is started and the rotational speed is controlled to be 30 rpm.

[0046] (4) After about 2 minutes, the solvent is completely volatilized, the homogenizer is stopped, and the substrate is taken out to obtain an ordered porous film.

[0047] Optical microscope observation (attached image 3 ) shows that the surface of the porous membrane is all distributed with ordered microporou...

Embodiment 3

[0049] (1) Dissolve polylactic acid and 2,4,6-tris(N,N-dimethyl-1,3-propanediamino)-1,3,5-triazine in chloroform to prepare polymerization and 2,4,6-tris(N,N-dimethyl-1,3-propanediamino)-1,3,5-triazine at a concentration of 30 mg / mL and 0.1 mg / mL;

[0050] (2) Take 40 μL of the above solution and drop it on the glass substrate, and place it on the rotating platform of the homogenizer;

[0051] (3) Air is introduced at a rate of 100 L / h, and the internal temperature of the homogenizer chamber is controlled to be 22° C., and the relative temperature is 75%. At the same time, the motor of the homogenizer is started and the rotational speed is controlled to be 20 rpm.

[0052] (4) After about 2 minutes, the solvent is completely volatilized, the homogenizer is stopped, and the substrate is taken out to obtain an ordered porous film.

[0053] Optical microscope observation (attached Figure 5 ) shows that the surface of the porous membrane is distributed with ordered microporous ...

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Abstract

The invention provides a preparation method of a CO2 responsive regular mesh material. The method comprises the following steps: (1) dissolving a polymer and a CO2 responsive compound into a solvent to obtain an uniform solution; (2) dropwise adding the prepared solution to the surface of a substrate; and arranging the substrate on a rotating platform of a spin coater; (3) charging air into the spin coater; blowing the solution from the right above through the air stream; controlling the rate of the charged air, and the temperature and the relative humidity in a chamber of the spin coater; andstarting the spin coater, and controlling the rotating speed; and (4) stopping the rotating of the spin coater after the solvent is completely volatilized; and moving out the substrate to obtain theregular mesh material. The method is simple, quick and efficient; in addition, the regular mesh material with different pore diameters and different CO2 responding degrees can be prepared by simply adjusting the preparation parameters.

Description

technical field [0001] The invention belongs to the field of polymer porous materials, in particular to a CO 2 Responsive ordered porous membrane materials. Background technique [0002] Polymer ordered porous membranes have significant application prospects in the fields of tissue engineering, optoelectronic materials, and self-cleaning materials due to their highly regular micro- or nano-scale pore structures. As an interface material, its hydrophilic and hydrophobic properties have a decisive impact on its application. For example, the porous membrane material used for tissue engineering needs to have a hydrophilic surface, because hydrophilicity will enhance the interaction between the membrane surface and cells, and after the cell culture is completed, the membrane is expected to become hydrophobic, so that the cells can fall off the membrane surface . Therefore, the "switch" type ordered porous membrane material whose surface wettability can be switched between hydr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/28C08L67/04C08L25/06
CPCC08J9/28C08J2325/06C08J2367/04
Inventor 殷鸿尧冯玉军詹福星
Owner SICHUAN UNIV
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