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Preparation device and preparation method of cellulose-based fiber membrane with nanostructure

A cellulose-based and nano-structured technology, which is applied in fiber processing, textiles, papermaking, non-woven fabrics, etc., can solve the problems of inability to prepare small-sized, high-performance nano-cellulose fiber membranes, and achieve controllable spinning conditions , high porosity and small fiber size

Inactive Publication Date: 2011-12-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a preparation device and method for a cellulose fiber membrane with a nanostructure, which overcomes the shortcomings of being unable to prepare small-sized, high-performance nano-cellulose fiber membranes under existing conditions

Method used

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  • Preparation device and preparation method of cellulose-based fiber membrane with nanostructure
  • Preparation device and preparation method of cellulose-based fiber membrane with nanostructure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as figure 1 Shown is a schematic structural diagram of a device for preparing a cellulose fiber membrane with nanostructures. The device for preparing a cellulose fiber membrane with nanostructures includes a rotatable sliding table 4 and a liquid injection pump 3 located at On the sliding table 4, when the sliding table 4 rotates, the liquid supply injection pump 3 moves along the sliding table 4, and the liquid supply injection pump 3 is fixedly connected to the spinneret 7. A rotary receiving device 1 (ie Roller collector), the spinneret 7 and the rotary receiving device 1 are connected to the high-voltage power supply 2, and the sliding table 4 and the rotating shaft of the rotary receiving device 1 are connected to the motor 6 and the speed controller 5. When in use, the spinning solution is delivered to the spinneret 7 through the liquid supply injection pump 3, and the high-voltage power supply 2 is turned on to start electrostatic spinning. The thickness and...

Embodiment 2

[0025] Using the device described in Example 1, at room temperature 25 o Under C, add 3 g of cellulose acetate butyrate (weight average molecular weight 70,000 g / mol) into a closed container containing 7 g of acetic acid / acetone (weight ratio 1 / 3) solution, and stir vigorously at 50 rpm on a magnetic stirrer until The cellulose acetate butyrate was completely dissolved, the solution was a colorless and transparent liquid, and a cellulose acetate butyrate solution with a mass fraction of 30% was obtained.

[0026] At room temperature 25 o Under the condition of C, the prepared cellulose acetate butyrate solution is subjected to electrospinning under high voltage conditions. The electrospinning conditions are: ambient relative humidity 40%, voltage 25kV, and the number of spinnerets is 5. The moving speeds of the drum collector and spinneret were 50 rpm and 5 m / min, respectively, the solution input speed to each spinneret was 2mL / h, the receiving distance was 12cm, and the spinning ...

Embodiment 3

[0028] Using the device described in Example 1, at room temperature 25 o At C, add 1.25g cellulose acetate (number average molecular weight 30,000) to 8.75g acetone / dimethylacetamide (weight ratio 2 / 1) solution, and stir vigorously at 70rpm on a magnetic stirrer until the cellulose acetate Completely dissolved, the solution was a colorless and transparent liquid, and a cellulose acetate butyrate solution with a mass fraction of 12.5% ​​was obtained.

[0029] At room temperature 25 o Under the condition of C, the prepared cellulose acetate solution is electrospinned under high voltage conditions. The electrospinning conditions are: the relative humidity of the environment is 40%, the voltage is 15kV, the number of spinnerets is 20, and the drum is collected The moving speed of the spinneret and the spinneret are 50 rpm and 10 m / min, respectively, the solution input speed to each spinneret is 2mL / h, and the receiving distance is 10cm. The material of the drum collector is aluminum ...

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Abstract

The invention relates to a preparation device and method of a cellulose fiber film with a nanometer structure. The device includes a rotatable slide table, and the liquid supply injection pump is arranged on the slide table. When the slide table rotates, the liquid supply injection pump moves along the slide table. The liquid supply injection pump is fixedly connected to at least one spinneret, and the spinneret There is a rotary receiving device in front of the head, the spinneret and the rotary receiving device are connected to a high-voltage power supply, and the rotating shafts of the slide table and the rotary receiving device are connected to a motor and a speed controller. The method is as follows: dissolving the cellulose polymer with a solvent to obtain a polymer solution with uniform properties; inputting the polymer solution to a spinneret at a constant flow rate for electrospinning to obtain cellulose with a nanostructure fibrous membrane. The cellulose fiber membrane with nanometer structure prepared by the invention has the advantages of small fiber size, high porosity, large specific surface area, good fiber uniformity and the like.

Description

Technical field [0001] The invention relates to a preparation device and a preparation method of a cellulose fiber membrane with a nano structure. Background technique [0002] Cellulose and its derivatives have the advantages of high degree of polymerization, good molecular orientation, strong chemical stability and biodegradability, and because of its extremely wide distribution in nature, it has been widely used in various fields of national life, such as textiles. , Cigarettes, medical and food industries. Traditional methods for preparing cellulose fibers include solution spinning, melt spinning, and liquid crystal spinning. However, the minimum diameter of cellulose fibers prepared by the above methods can only be a few microns. It cannot fully meet the needs of some special applications such as tissue engineering and drug delivery. [0003] In recent years, electrospinning technology, as a simple and effective method that can prepare fibers with diameters ranging from hun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D04H1/72D01D5/00
Inventor 丁彬赵帆胡娟平俞建勇
Owner DONGHUA UNIV
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