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Polylactic acid microporous membrane

A technology of polylactic acid and microfiltration membranes, applied in membrane technology, semipermeable membrane separation, chemical instruments and methods, etc., can solve the problem of few renewable polymer membranes

Inactive Publication Date: 2015-03-25
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polymer materials based on renewable resources are an important direction for the development of new materials in the future, but there are still few reports on separation membranes prepared from renewable polymer materials. Although cellulose is also a renewable resource, the separation membranes prepared from cellulose Membranes are often hydrophilic, and relatively hydrophobic renewable polymer membranes are rare

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0007] Dissolve 1g of polylactic acid in 9g of dichloromethane, place the solution in the liquid chamber of the spray gun at room temperature, and spray the solution evenly on the substrate under the drive of 0.1MPa nitrogen to obtain a microporous filter membrane with a pore size of about 1 The contact angle of water is about 120°, and the contact angle of n-hexane and n-dodecane is zero.

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PUM

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Abstract

The invention relates to a polylactic acid microporous membrane. A renewable macromolecular-polylactic acid is used as a membrane material, and a 'spinning' method is used for preparing a dewatering micropore separation membrane, the bore diameter of the separation membrane is 1 micron, a water contact angle is about 120 degrees, and the contact angle of alignment hexane and positive dodecane is zero.

Description

technical field [0001] The invention relates to using polylactic acid as a membrane material and adopting a "spray spinning" method to prepare a microporous membrane. Background technique [0002] Polymer microporous membranes are widely used in the fields of separation and packaging, and the membrane materials are mainly petroleum-based polymer materials or cellulose materials. Polymer materials based on renewable resources are an important direction for the development of new materials in the future, but there are still few reports on separation membranes prepared from renewable polymer materials. Although cellulose is also a renewable resource, the separation membranes prepared from cellulose Membranes are often hydrophilic, and relatively hydrophobic renewable polymer membranes are rare. Contents of the invention [0003] The technical scheme provided for realizing the present invention is: [0004] Dichloromethane is used as a solvent, and polylactic acid is dissolv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D71/48B01D67/00
Inventor 张赛晖潘亚杰周楠谢彤彤赵晓明冯月
Owner TIANJIN POLYTECHNIC UNIV