Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing single-layer self-assembled porous film

A self-assembly, porous membrane technology, applied in chemical instruments and methods, membrane technology, semi-permeable membrane separation, etc., can solve the problems of low flux, large thickness of porous membrane membrane, etc. Small, cost-effective film production and fast results

Inactive Publication Date: 2020-05-22
武汉介观生物科技有限责任公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the technical problems of excessive thickness and low flux of the single-layer porous filter membrane produced in the prior art, the present invention provides a method for preparing a single-layer self-assembled porous membrane

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing single-layer self-assembled porous film
  • Method for preparing single-layer self-assembled porous film
  • Method for preparing single-layer self-assembled porous film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Apparatus for preparing thin films

[0031] The device includes a solution tank and a roller arranged in the solution tank, and the prepared single-layer self-assembled porous membrane moves from one end of the solution tank to the other end of the solution tank through the roller.

Embodiment 2

[0033] Preparation of polycaprolactone (PCL) film

[0034] Step S1: dissolving polycaprolactone with a molecular weight of 8K in dichloromethane to form a 2% w / v polymer homogeneous solution;

[0035] Step S2: loading the homogeneous polymer solution on a grid base, the grid base has a thickness of 50 μm, a pore diameter of 400 μm, and a line width of 50 μm, and the grid unit is a honeycomb through-hole membrane.

[0036] Step S3: Evaporate the solvent on the grid base with hot air, the temperature of the hot air is 22° C., the time of the hot air is 5 s, and the speed of the hot air is 3 m / s.

[0037] Step S4: After stopping the evaporation, a thin film is obtained.

Embodiment 3

[0039] Preparation of poly(lactic-co-glycolic acid) (PLGA) film

[0040] Step S1: dissolving PLGA with a molecular weight of 7.5K in dichloromethane to form a 2% w / v homogeneous polymer solution;

[0041] Step S2: loading the homogeneous polymer solution on a grid base, the grid base has a thickness of 50 μm, a pore diameter of 400 μm, and a line width of 50 μm, and the grid unit is a honeycomb through-hole membrane.

[0042] Step S3: Evaporate the solvent on the grid base with hot air, the temperature of the hot air is 22° C., the time of the hot air is 5 s, and the speed of the hot air is 3 m / s.

[0043] Step S4: After stopping the evaporation, a thin film is obtained.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Apertureaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing a single-layer self-assembled porous film. The method comprises the following steps: S1, dissolving macromolecular substances with a solvent so as to forma macromolecular uniform solution; S2, loading the macromolecular uniform solution onto a grid substrate; S3, evaporating the solvent on the grid substrate by utilizing hot air; and S4, after evaporation is stopped, obtaining a thin film; wherein the grid substrate in the step S2 comprises a plurality of grid units, and the thickness of the grid substrate ranges from 30 micrometers to 100 micrometers. Compared with the prior art, the method provided by the invention has the following beneficial effects: a prepared film is small in thickness, high in flux, good in biocompatibility, low in costand high in efficiency.

Description

technical field [0001] The invention belongs to the field of material preparation, in particular to a method for preparing a single-layer self-assembled porous membrane Background technique [0002] Porous membranes are widely used in the fields of chemistry, biology, medicine, and environmental protection. Single-layer porous membranes have high flux, good selectivity, and adjustable pore size within a certain range, which can meet the requirements of some special applications. [0003] Polymer film is a film made of organic polymer. With the development of the petroleum industry and technology, the application field of polymer film has been continuously expanded, from the initial packaging film to intelligent polymer film, polymer functional film and so on. Among them, selective separation membranes are the most used, such as ion exchange membranes, microporous filtration membranes, ultrafiltration membranes, liquid membranes, liquid crystal membranes, etc. The fields th...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01D67/00B01D69/02B01D71/76
CPCB01D67/0002B01D69/02B01D71/76
Inventor 涂小龙石剑汪莉陈勇
Owner 武汉介观生物科技有限责任公司
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com