Method for preparing CA (cellulose acetate) nanofiber composite

A technology of cellulose acetate and nanofibers, which is applied in fiber treatment, textiles and papermaking, can solve the problems of low impact strength, insufficient hydrophilicity and hydrophobicity, poor surface heat resistance, etc., and achieve excellent thermal stability and weather resistance, large Application and industrialization value, effect of high mechanical strength

Active Publication Date: 2016-02-10
YANGZHOU NABAICHENG NANO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has its own insurmountable shortcomings, such as poor wear resistance, poor surface heat resistance, low hardness, insufficient hydrophilicity and hydrophobicity, low impact strength, complex modification process, etc., which limit its application range. It is necessary to maintain CA Further modification on the basis of good performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1) Add the cellulose acetate to acetone after drying at 45 degrees, and stir it evenly for 5 hours under airtight conditions to fully dissolve it to obtain a CA solution with a concentration of 3 wt%.

[0024] 2) Add zinc acetate and soluble inorganic iron salt to CA solution, stir and dissolve at room temperature under airtight conditions. The concentrations of zinc acetate and ferric chloride were 4.5 wt% and 0.8 wt%, respectively.

[0025] 3) The gelatin is directly added to the solvent and stirred evenly for 4 hours to fully dissolve it to obtain a gelatin solution with a concentration of 10 wt%. The solvent is a mixture of glacial acetic acid and anhydrous ethanol, and the volume ratio of glacial acetic acid to anhydrous ethanol is 1:4.

[0026] 4) Add soluble inorganic copper salt and zinc salt to the gelatin solution, and stir evenly at room temperature. The concentrations of copper salt and zinc salt are 0.7wt% and 3wt%, respectively.

[0027] 5) Step 2) and step 4) a...

Embodiment 2

[0031] 1) Add the cellulose acetate to acetone after drying at 45 degrees, and stir uniformly for 5 hours under airtight conditions to fully dissolve it to obtain a CA solution with a concentration of 6 wt%.

[0032] 2) Add zinc acetate and soluble inorganic iron salt to CA solution, stir and dissolve at room temperature under airtight conditions. The concentrations of zinc acetate and ferric chloride were 0.8 wt% and 1.0 wt%, respectively.

[0033] 3) The gelatin is directly added to the solvent and stirred evenly for 4 hours to fully dissolve it to obtain a gelatin solution with a concentration of 10 wt%. The solvent is a mixture of glacial acetic acid and anhydrous ethanol, and the volume ratio of glacial acetic acid to anhydrous ethanol is 1:6.

[0034] 4) Add soluble inorganic copper salt and zinc salt to the gelatin solution, and stir evenly at room temperature. The concentrations of copper salt and zinc salt are 0.7wt% and 3wt%, respectively.

[0035] 5) Step 2) and step 4) a...

Embodiment 3

[0039] 1) Add the cellulose acetate to acetone after drying at 45 degrees, and stir it evenly for 6 hours under airtight conditions to fully dissolve it to obtain a CA solution with a concentration of 15 wt%.

[0040] 2) Add zinc acetate and soluble inorganic iron salt to CA solution, stir and dissolve at room temperature under airtight conditions. The concentrations of zinc acetate and ferric chloride were 1.2wt% and 1.0wt%, respectively.

[0041] 3) The gelatin is directly added to the solvent and stirred evenly for 4 hours to fully dissolve it to obtain a gelatin solution with a concentration of 10 wt%. The solvent is a mixture of glacial acetic acid and anhydrous ethanol, and the volume ratio of glacial acetic acid to anhydrous ethanol is 1:3.

[0042] 4) Add soluble inorganic copper salt and zinc salt to the gelatin solution, and stir evenly at room temperature. The concentrations of copper salt and zinc salt are 5wt% and 1wt%, respectively.

[0043] 5) Step 2) and step 4) are ...

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Abstract

The invention discloses a method for preparing CA (cellulose acetate) nanofiber composite. The method includes the following steps: preparing a CA solution; adding zinc salt and ferric salt; preparing a gelatin solution; adding copper salt and zinc salt; performing double-nozzle electrostatic spinning by adopting the CA solution and gelatin solution as the spinning solution; uniformly coating at least one surface of the structural layer fiber fabric with the spinning solution; then placing the fabric in glutaraldehyde steam for fumigation; carrying out fluoridation so as to obtain the CA nanofiber composite. According to the invention, the raw materials are easy to obtain, firstly, CA and the gelatin are combined, and then through fluorination, so that the nanofiber composite keeps higher mechanical strength, excellent heat stability and weather resistance, in addition, the combination of CA with gelatin achieves higher porosity as well as good light transmission and ventilation, so that the composite is good in affinity with the human body, is environment-friendly, can efficiently obstruct ultrafine particles, and has great application and industrialization value.

Description

Technical field [0001] The invention relates to the field of nanofiber synthetic materials, in particular to a method for preparing cellulose acetate nanofiber composite materials. Background technique [0002] Cellulose acetate (CA) is a chemically modified natural polymer obtained by esterifying the hydroxyl groups in cellulose molecules with acetic acid. Stable to light, not easy to burn, stable in dilute acid, gasoline, mineral oil and vegetable oil, has the advantages of toughness, transparency, good gloss, etc., good melt fluidity, easy to form and process. But it has its own insurmountable shortcomings, poor wear resistance, poor surface heat resistance, low hardness, insufficient hydrophilicity and hydrophobicity, low impact strength, complex modification process, etc., which limit its scope of application. It is necessary to maintain CA It is further modified on the basis of good performance. [0003] Gelatin is a white or light yellow powder, non-volatile, transparent a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/07D06M15/15D06M13/123D06M11/09D06M11/58
Inventor 林永兴邵才珠刘学书刘荣升其他发明人请求不公开姓名
Owner YANGZHOU NABAICHENG NANO TECH CO LTD
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