Preparation method of high-adsorbability cellulose diacetate composite electrostatic spinning nanofiber ordered porous film

A technology of cellulose diacetate and porous film, applied in the direction of artificial filaments made of cellulose derivatives, electrospinning, separation methods, etc., to achieve the effect of feasible operation, small fiber diameter, and good dry state adsorption performance

Active Publication Date: 2016-03-16
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The compound preparation of CA and PCL and PVP is mainly electrospun nanofiber disordered film, and there is no report on the preparation of electrospun nanofiber by compounding CA and medical PLGA.

Method used

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  • Preparation method of high-adsorbability cellulose diacetate composite electrostatic spinning nanofiber ordered porous film
  • Preparation method of high-adsorbability cellulose diacetate composite electrostatic spinning nanofiber ordered porous film
  • Preparation method of high-adsorbability cellulose diacetate composite electrostatic spinning nanofiber ordered porous film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Put 0.375g of cellulose diacetate and 0.125g of polycaprolactone (PCL) into a mixed solvent of 6.67mL of acetone and 3.33mL of chloroform, and stir until completely dissolved to obtain a solution with a volume concentration of 5%. The prepared solution was sucked into the syringe, and the ordered porous film of cellulose diacetate nanofibers was prepared by using an electrospinning machine. The receiving distance between the needle and the receiving roller was 18 cm. The ordered porous film of cellulose diacetate nanofiber prepared in this example is shown in figure 1 , fiber diameter see Figure 17 , aperture see Figure 18 , for order, see Figure 19 , and has a fiber diameter of 0.45±0.17 μm, a pore diameter of 5.43±1.18 μm, and an order degree of 79.43±7.40°. Its scanning electron micrographs after adsorbing particles 11d under dry conditions are as follows: Figure 4 As shown, the particle morphology after adsorbing particles under dry conditions is as follow...

Embodiment 2

[0046] Put 0.375g of cellulose diacetate and 0.125g of polylactic-co-glycolic acid (PLGA) into a mixed solvent of 6.67mL of acetone and 3.33mL of chloroform, and stir until completely dissolved to obtain a volume concentration of 5%. solution. The prepared solution was sucked into the syringe, and the ordered porous film of cellulose diacetate nanofibers was prepared by using an electrospinning machine. The receiving distance between the needle and the receiving roller was 18 cm. The ordered porous film of cellulose diacetate nanofiber prepared in this example is shown in figure 2 , fiber diameter see Figure 17 , aperture see Figure 18 , for order, see Figure 19 , with a fiber diameter of 0.13±0.05 μm, a pore diameter of 2.48±2.10 μm, and an order degree of 80.89±2.66°. Its scanning electron micrograph after adsorbing particles 11d under dry conditions is as follows: Image 6 As shown, the particle morphology after adsorbing particles under dry conditions is as follo...

Embodiment 3

[0048]Put 0.9 g of cellulose diacetate and 0.3 g of polyvinylpyrrolidone (PVP) into a mixed solvent of 6.67 mL of dimethylformamide and 3.33 mL of methanol, and stir until completely dissolved to obtain a solution with a volume concentration of 12%. The prepared solution was sucked into the syringe, and the ordered porous film of cellulose diacetate nanofibers was prepared by using an electrospinning machine. The receiving distance between the needle and the receiving roller was 18 cm. The ordered porous film of cellulose diacetate nanofiber prepared in this example is shown in image 3 , fiber diameter see Figure 17 , aperture see Figure 18 , for order, see Figure 19 , with a fiber diameter of 0.12±0.04 μm, a pore diameter of 3.48±2.50 μm, and an order degree of 90.24±3.12°. Its scanning electron micrographs after adsorbing particles 11d under dry conditions are as follows: Figure 8 As shown, the particle morphology after adsorbing particles under dry conditions is a...

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Abstract

The invention discloses a preparation method of a high-adsorbability cellulose diacetate composite electrostatic spinning nanofiber ordered porous film. The preparation method comprises the following steps: dissolving cellulose diacetate and polycaprolactone, or cellulose diacetate and a lactic acid-glycolic acid copolymer, or cellulose diacetate and polyvinylpyrrolidone into an organic solvent so as to prepare a spinning solution, and preparing the cellulose diacetate composite electrostatic spinning nanofiber ordered porous film by adopting an electrostatic spinning method. The method disclosed by the invention is simple, and cannot pollute the environment in the preparation process. The prepared cellulose diacetate composite electrostatic spinning nanofiber ordered porous film has tiny fiber diameter, good pore diameter and order degree, is good in dry and wet state adsorption performances, is high in water absorption, can be applied to the flue gas and tobacco industry of the dry state and wet state adsorption and filtration separation industry, is wide in market application prospect, and has relatively high application value.

Description

technical field [0001] The invention relates to a method for preparing a nanofiber porous non-woven fabric ordered film, in particular to a method for preparing a highly absorbent cellulose diacetate composite electrostatic spinning nanofiber ordered porous film. technical background [0002] Cellulose acetate (CA) is a widely used polymer, which is derived from cellulose and can be used in coatings, films, membrane separation, textile and tobacco industries. Since the CA molecule contains an oxygen ring structure, it can be formed by linking ether bonds, and the branch chain contains highly polar acetyl groups (-OCOCH) and hydroxyl groups (-OH). Therefore, CA tow has a strong affinity for polar substances, and can chemically react with tar components and low-molecular substances, and the reactants remain firmly on the surface of the fiber; at the same time, the surface of the tow has micropores and roughness. During the adsorption process of flue gas, it has dual effects o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28C08L1/12C08L67/04C08L39/06D04H1/728D01D5/00B01D46/30B01D39/04
CPCB01D39/04B01D46/30B01D2239/0631B01J20/262B01J20/28033B01J20/28038B01J20/28078B01J20/2808B01J20/28083B01J2220/44B01J2220/4812B01J2220/4825C08L1/12D01D5/0007D01F2/28D04H1/728C08L67/04C08L39/06
Inventor 高长有冯建永
Owner ZHEJIANG UNIV
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