A kind of preparation method and application of polym-phenylene isophthalamide-polyacrylonitrile composite nanofiber membrane

A poly-m-phenylene isophthalamide and composite nanofiber technology is applied in fiber processing, single-component halogenated hydrocarbon man-made filament, filament/thread forming, etc., which can solve the cumbersome process of immobilizing enzymes, Low mechanical strength, difficult to recycle, etc., to achieve the effect of improving the utilization rate of enzymes, high mechanical strength, and easy recovery
CN103726233BInactive Publication Date: 2016-04-06TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2016-04-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing a nanofiber film by blending polym-phenylene isophthalamide and polyacrylonitrile and its application. Specifically: prepare a polym-phenylene isophthalamide polymer solution with a mass percentage of 5-8%; prepare a polyacrylonitrile solution with a mass percentage of 5-8%; mix the two solutions at a ratio of 3:1-1 : 5 mass ratio mixing, polym-phenylene isophthalamide-polyacrylonitrile composite nanofiber membrane is made by electrospinning method, as the immobilized carrier of enzyme; through sodium hydroxide / ethylenediamine surface reaction The immobilized carrier of the enzyme is modified by the method; the enzyme is immobilized on the nanofiber membrane with active amino groups and carboxyl groups on the surface. The invention has the advantages of simple carrier preparation and enzyme immobilization process, high enzyme loading capacity, high catalytic activity, high mechanical strength of the carrier, repeated use and the like.
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Description

technical field

[0001] The invention relates to a preparation method and application of polym-phenylene isophthalamide-polyacrylonitrile composite nanofiber membrane. Background technique

[0002] The catalytic activity of free enzymes is easily affected by factors such as pH, temperature, and organic solvents. Compared with free enzymes, immobilized enzymes are beneficial to improve the stability and catalytic activity of enzymes under extreme conditions, and have the advantages of easy separation and recovery, and repeated use.

[0003] At present, many materials and methods for immobilizing enzymes have emerged, among which nanomaterials for immobilizing enzymes are favored by researchers because of their high enzyme loading capacity, especially some carrier materials with porous structures and large specific surface areas. In recent years, the use of electrospun nanofibers to immobilize enzymes has become an emerging research hotspot.

[0004] CN102400242A Utilizes m-p...

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
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