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Method for preparing cellulose-based heat-resistant nanocomposite fiber film by electrospinning

A nano-composite fiber and cellulose-based technology, which is applied in fiber treatment, textiles, papermaking, non-woven fabrics, etc., can solve the problems of low porosity, poor thermal performance, and high brittleness of PVA film, and achieve improved thermal performance and configuration The effect of fast and simple preparation process

Inactive Publication Date: 2017-03-29
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing a cellulose-based heat-resistant nanocomposite fiber film by electrospinning in order to solve the technical problems of high brittleness, low porosity and poor thermal performance of the PVA film prepared by the existing method

Method used

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  • Method for preparing cellulose-based heat-resistant nanocomposite fiber film by electrospinning
  • Method for preparing cellulose-based heat-resistant nanocomposite fiber film by electrospinning
  • Method for preparing cellulose-based heat-resistant nanocomposite fiber film by electrospinning

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specific Embodiment approach 1

[0027] Specific embodiment one: In this embodiment, the method for preparing cellulose-based heat-resistant nanocomposite fiber film by electrospinning is as follows:

[0028] 1. Under the condition of a water bath at 45° C., 130 to 220 g of sulfuric acid is used to hydrolyze 20 to 50 g of MCC (microcrystalline cellulose) for 1 to 2 hours to obtain a mixed solution, and the mixed solution is diluted with deionized water 5 to 10 times the quality of the mixed solution to obtain Suspension, the suspension was allowed to stand at 4°C for 24h, and then the settled CNCs were collected,

[0029] The CNCs were centrifuged first, then diluted with 5-10 times deionized water and then centrifuged three times, and the weakly acidic CNC aqueous solution after three times of centrifugation was collected, placed in a dialysis bag and dialyzed until the pH value was 7, and the CNCs solution was obtained. ;

[0030] 2. Dissolve 30-50g of PVA particles in 170-333g of deionized water, stir in ...

specific Embodiment approach 2

[0033] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the mass concentration of sulfuric acid described in step one is 64%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0034] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 1, deionized water with 8 times the mass of the mixed solution is added to dilute the mixed solution to obtain a suspension. Others are the same as those in the first or second embodiment.

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Abstract

The invention belongs to the field of manufacturing composite fiber membranes, and relates to a method for manufacturing a composite fiber membrane, in particular to a method for manufacturing a cellulose base heat-resisting nano-composite fiber membrane in an electrostatic spinning mode. The method aims at solving the technical problems that a PVA membrane obtained through an existing method is large in brittleness, hard to form and low in porosity. The method comprises the steps of 1, preparing a CNCs solution; 2, preparing an electrospinning solution; 3, putting the electrospinning solution into an injection syringe, and conducting spinning to obtain the cellulose base heat-resisting nano-composite fiber membrane. According to the method, the environment-friendly and efficient electrospinning technology is adopted for solving the problems that the PVA membrane is hard to form and the performance is not easy to control; the ultra-fine PVA / CNC nano-composite fiber with the smooth surface and the uniform diameter is obtained, and the using performance of the PVA membrane obtained through electrospinning is better.

Description

technical field [0001] The invention relates to a preparation method of a composite fiber film. Background technique [0002] Polyvinyl alcohol (PVA) is a water-soluble, semi-crystalline, non-toxic, degradable and biocompatible polymer, therefore, it has a wide range of application prospects. In addition, polyvinyl alcohol-based nanofibers have been widely used in tissue engineering scaffolds, filter materials, membrane materials, protective clothing, and drug sustained release. However, the PVA films obtained by traditional film-forming methods are relatively brittle, have low porosity and poor thermal properties, so their use is strictly limited. Therefore, it is of great significance to study efficient and environmentally friendly PVA film-forming methods to achieve high performance of PVA materials. Among the many film-forming methods, the electrospinning method has become one of the effective ways to prepare high-performance nanocomposites due to its advantages of eas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/4382D04H1/728D01D5/00
Inventor 宦思琪韩广萍程万里白龙李超刘国相
Owner NORTHEAST FORESTRY UNIVERSITY