A kind of natural cellulose/polyacrylonitrile nano antibacterial fiber film and preparation method thereof

A nano-antibacterial fiber and natural cellulose technology, applied in textiles, papermaking, non-woven fabrics, etc., can solve the problems of high price of silver antibacterial fabrics, color change of antibacterial fabrics, restrictions on popularization and promotion, etc., and achieve solvent recyclability , good film-forming properties, strong operability

Active Publication Date: 2018-03-30
SHANGHAI UNIV OF ENG SCI
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the price of silver antibacterial fabrics remains high, and they are prone to oxidative discoloration, resulting in color changes of antibacterial fabrics, greatly reducing the antibacterial effect, and limited popularization.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of natural cellulose/polyacrylonitrile nano antibacterial fiber film and preparation method thereof
  • A kind of natural cellulose/polyacrylonitrile nano antibacterial fiber film and preparation method thereof
  • A kind of natural cellulose/polyacrylonitrile nano antibacterial fiber film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Configuration of cellulose spinning solution:

[0032] Warm 150 mL of DMAC to 130 °C under N 2 Add 4.6g of shredded natural cotton fibers under the conditions of protection and reflux, and activate for 60min; cool down to 100°C, add 12g of dried LiCl rapidly at this temperature, stir and dissolve for 120min at a stirring speed of 470r / min; then Cool down to 20-25°C, stir and dissolve for 120min at a stirring speed of 470r / min, and then perform ultrasonic defoaming treatment to obtain a uniform and stable cellulose / LiCl / DMAC spinning solution.

[0033] (2) Configuration of polyacrylonitrile spinning solution:

[0034] 10 g of polyacrylonitrile was chopped and added into 90 mL of DMAC, heated to 80° C. to dissolve, and a spinning solution containing 10 wt % of polyacrylonitrile was prepared.

[0035] (3) Electrospinning

[0036]The above cellulose / LiCl / DMAC spinning solution and the polyacrylonitrile spinning solution are ultrasonically blended at a mass ratio of 1...

Embodiment 2

[0047] (1) Configuration of cellulose spinning solution:

[0048] Warm 140 mL of DMAC to 125 °C under N 2 Add 5g of shredded natural cotton fibers under the conditions of protection and reflux, activate for 60min; cool down to 100°C, add 10g of dried LiCl at this temperature, stir and dissolve for 120min at a stirring speed of 470r / min; then cool down To 20-25 ° C, with a stirring speed of 470r / min, stir and dissolve for 120min, and then perform ultrasonic defoaming treatment to obtain a uniform and stable cellulose / LiCl / DMAC spinning solution.

[0049] (2) Configuration of polyacrylonitrile spinning solution:

[0050] 10 g of polyacrylonitrile was shredded and added into 90 mL of DMAC, heated to 80° C., stirred and dissolved, and a spinning solution containing 10 wt % of polyacrylonitrile was prepared.

[0051] (3) Electrospinning

[0052] The above-mentioned cellulose / LiCl / DMAC spinning solution and polyacrylonitrile spinning solution are ultrasonically blended at a mass ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
glass transition temperatureaaaaaaaaaa
melting pointaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to view more

Abstract

The invention relates to the preparation field of nano-antibacterial materials, in particular to a natural cellulose / polyacrylonitrile nano-antibacterial fiber membrane prepared through an electrostatic spinning method and a preparation method thereof. The method includes the steps that DMAC is heated to be at the temperature of 110-150 DEG C, and natural cellulose is added for activation under the nitrogen and condensation backflow conditions; then, after the reaction system is cooled to be at the temperature of 80-100 DEG C, stirring and dissolving are conducted for 1.5-3 hours after dry LiCl is added; the reaction system is continuously cooled to be at the temperature of 20-25 DEG C, stirring is conducted for 1.5-3 hours, and ultrasound defoaming treatment is carried out; polyacrylonitrile is cut into pieces and then is added into the DMAC, and heating is performed for dissolving so that a spinning solution containing the 8-12 wt% polyacrylonitrile can be obtained; two spinning solutions are subjected to ultrasonic oscillation mixing, then the electrostatic spinning technology is used for obtaining the natural cellulose / polyacrylonitrile nano fiber membrane, and antibacterial treatment is further carried out. The antibacterial fiber membrane is good in thermal property and moisture absorption, obvious in antibacterial effect, even in pore diameter and low in cost.

Description

technical field [0001] The invention relates to the field of preparation of nano antibacterial materials, in particular to an electrospinning method for preparing a natural cellulose / polyacrylonitrile nano antibacterial fiber film and a preparation method thereof. Background technique [0002] Facing the serious "white pollution" caused by non-degradable polymer materials to the environment, the use of biodegradable natural cellulose has become a research hotspot in the field of materials. In addition to traditional industrial applications, how to combine nanoscience, chemistry, physics, materials science, biology and bionics to further effectively utilize cellulose resources and develop cellulose in nano fine chemicals, nano medicine, nano food, The application of nanocomposite materials and new energy has become a research topic that scientists at home and abroad are competing to carry out. Polyacrylonitrile has good compatibility and is soluble in DMAC, DMF, NMP and othe...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): D04H1/728D04H1/43D04H1/425
CPCD04H1/4382D04H1/728D10B2401/13D10B2505/04D10B2509/00
Inventor 辛斌杰曹延娟吴湘济杜卫平方珩张杰沈翠翠
Owner SHANGHAI UNIV OF ENG SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap