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A kind of method for preparing pvp/ff composite nanofiber membrane by electrospinning

A composite nanofiber and electrospinning technology, which is applied in spinning solution preparation, textile and papermaking, nonwovens, etc., can solve the problems of difficult electrospinning, small molecular weight, and low solution concentration, and achieve simple operation and less time-consuming , good degradability and biocompatibility

Inactive Publication Date: 2015-08-12
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the small molecular weight and low solution concentration of FF monomer, it is difficult to electrospin pure FF monomer
There is also no report on the electrospinning of mixture solutions of FF and other polymers.

Method used

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  • A kind of method for preparing pvp/ff composite nanofiber membrane by electrospinning
  • A kind of method for preparing pvp/ff composite nanofiber membrane by electrospinning
  • A kind of method for preparing pvp/ff composite nanofiber membrane by electrospinning

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Put the mixture of methanol and N,N-dimethylacetamide (DMAc) at a volume ratio of 85:15 into the reaction vessel;

[0029] (2) Slowly add the weighed PVP and FF powder into the above-mentioned reaction vessel under stirring condition, and continue to stir for 20-30 minutes until completely swollen; wherein, the content of PVP in the mixture of methanol and DMAc is fixed at 10% (w / w), the mass ratio of FF to PVP is: 0:100, 4:100, 6:100, 20:100, 50:100;

[0030] (3) Place the Erlenmeyer flask in a shaker, shake it at 25±2°C for 15-24 hours until it is completely dissolved, the polymer solution is transparent, and degas it by ultrasonic treatment for 15 minutes to obtain a spinning solution;

[0031] (4) Draw out the FF / PVP spinning solution with a 5ml syringe (the inner diameter of the needle is 0.4~0.7mm), fix it on the electrospinning device, fix the static voltage at 16kv, receive the distance at 25cm, and spray the flow rate at 1mL / h, and carry out Electrospinni...

Embodiment 2

[0037] (1) Put the mixture of methanol and N,N-methylacetamide (DMAc) at a volume ratio of 85:15 into the reaction vessel;

[0038] (2) Slowly add the weighed PVP and FF powder into the above-mentioned reaction vessel under stirring condition, and continue to stir for 20-30 minutes until completely swollen; wherein, the content of PVP in the mixture of methanol and DMAc is fixed at 10% (w / w), the mass ratio of FF to PVP is 50:100;

[0039] (3) Place the Erlenmeyer flask in a shaker, shake it at 25±2°C for 15-24 hours until it is completely dissolved, the polymer solution is transparent, and degas it by ultrasonic treatment for 15 minutes to obtain a spinning solution;

[0040] (4) Use a 5ml syringe (the inner diameter of the needle is 0.4~0.7mm) to extract the FF / PVP spinning solution, fix it on the electrospinning device, fix the static voltage at 16kv, receive the distance at 25cm, and spray the flow rate at 0.1mL / h , 0.2mL / h, 0.4mL / h, 0.8mL / h, 1.0mL / h, electrospun to obta...

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Abstract

The invention relates to a static spinning preparation method for a polyvinyl pyrrolidone / biphenylalanine composite nano-fiber film. The method comprises the steps of: (1) slowly adding the polyvinyl pyrrolidon and the biphenylalanine into a mixing solvent of carbinol and N, N-methylacetamide along with agitating, and continuously agitating for 20 to 30 minutes until the mixture is completely swelled; and then vibrating for 15 to 24 hours at 25 plus or minus 2 DEG C until the mixture is dissolved completely so as to obtain the transparent polymer solution, and ultrasonically processing the transparent polymer solution for 15 minutes to degas so as to obtain spinning solution; and (2) statically spinning the obtained spinning solution to obtain a film, and then drying the film in vacuum to obtain the finished product. According to the method, the operation is simple, and less time is consumed, and the raw materials are cheap and easy to obtain; by adopting the method, the film material with diameter and aperture at nanometer level can be obtained; and the method is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the field of preparation of electrospinning nanofiber membranes, in particular to a method for preparing PVP / FF composite nanofiber membranes by electrospinning. Background technique [0002] Electrospinning technology refers to the process in which a polymer solution or melt is sprayed and stretched into fibers. It is a new method for preparing polymer nanofibers, which can prepare ultrafine fibers with a diameter of nanometers, and the minimum diameter can reach 1nm. Compared with polymer fibers prepared by traditional methods, the preparation of polymer nanofibers by electrospinning has the advantages of simple equipment, easy operation, and high efficiency, and the ultrafine fiber membranes prepared by electrospinning have the advantages of large specific surface area, high porosity, and light weight. Engineering, drug and catalyst carriers, wound dressings, filtration, sensors, templates, protective fabrics, nanoelectroni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D04H1/728D01D1/02
Inventor 朱利民袁彩艳聂华丽
Owner DONGHUA UNIV
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