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A kind of pullulan/sodium alginate composite fiber membrane and its preparation method and application

A composite fiber membrane, sodium alginate technology, applied in fiber processing, textile and papermaking, filament/thread forming, etc., can solve problems such as high price, achieve high production efficiency, increase stability, and improve water vapor resistance. Effect

Active Publication Date: 2019-11-26
HUNAN AGRICULTURAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pullulan is a water-soluble exopolysaccharide produced by the fermentation of Aureobasidium pullulans. It is easily soluble in cold or hot water and has edible properties, but the price is high.

Method used

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  • A kind of pullulan/sodium alginate composite fiber membrane and its preparation method and application
  • A kind of pullulan/sodium alginate composite fiber membrane and its preparation method and application
  • A kind of pullulan/sodium alginate composite fiber membrane and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Dissolve 10g of pullulan in 100mL of pure water, stir it with a magnetic stirrer to completely dissolve it to form a uniform solution; carry out electrospinning of the prepared solution, set the spinning voltage to 18kv, and the receiving distance to 12cm, The speed of the spinning propeller was 0.6 mL / h, and the diameter of the spinneret was 0.9 mm.

Embodiment 2

[0032]Add 10g of pullulan and 0.8g of sodium alginate to 100mL of pure water, stir with a magnetic stirrer to completely dissolve and form a uniform solution; carry out electrospinning of the prepared solution, and set the spinning voltage to 15kv, receiving distance 10cm, spinning propeller speed 0.4mL / h, spinneret diameter 0.9mm.

Embodiment 3

[0034] Dissolve 10g of pullulan and 1.6g of sodium alginate in 100mL of pure water, stir with a magnetic stirrer to completely dissolve and form a uniform solution; electrospin the prepared solution, and set the spinning voltage It is 14kv, the receiving distance is 10cm, the speed of the spinning propeller is 0.4mL / h, and the diameter of the spinneret is 0.9mm.

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Abstract

The invention provides a Pullulan / sodium alginate composite fibrous membrane and a preparing method and application thereof. The preparing method comprises the steps of preparing an 8-12 wt% Pullulansolution, adding sodium alginate to Pullulan and sodium alginate, stirring to uniformly disperse the mixture to obtain an electrospinning solution, conducting electrospinning on the electrospinning solution to obtain a composite nanometer fibrous membrane, wherein the mass ratio of Pullulan to sodium alginate is 10: (0.5-2.5). The diameter of the composite fibrous membrane is 44-130 nm, and the fibrous membrane is poisonless and can be degraded. By adding sodium alginate, the viscosity of a fiber forming solution can be improved, and the stability of jetting filament in a spinning process is improved; by adding an appropriate amount of calcium chloride, the nanometer fibrous membrane which is thinner in dimension and more uniform in distribution can be prepared. The preparing method is high in production efficiency and is suitable for industrialized production; the prepared composite fibrous membrane is free of residual organic solvent, green and safe, and has a good application prospect in the field of food and medicine making.

Description

technical field [0001] The invention relates to the technical field of electrospinning fiber membranes, and more specifically relates to a pullulan / sodium alginate composite fiber membrane and its preparation method and application. Background technique [0002] Electrospinning is a common technique for processing and preparing nanofibers. Fibers with a diameter of 2 nm to tens of microns can be prepared by this method. The stacking of these fibers can form a non-woven fabric with a very large specific surface area. The principle of electrospinning technology is as follows: the polymer is prepared as a polymer solution or melt, the solution or melt is added to the storage device, and slowly extruded through the propulsion device; on the other hand, a Thousands to tens of thousands of volts of high voltage, the high voltage has two functions: to make the surface of the polymer solution or melt with a large amount of charge, secondly, an electric field is generated between the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D01D5/00
CPCD01D5/0015D04H1/728
Inventor 肖茜谭索
Owner HUNAN AGRICULTURAL UNIV
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