Polylactic acid antibacterial nanofiber membrane and preparation method thereof

A nanofiber film and nanofiber technology, applied in fiber treatment, fiber chemical characteristics, spinning solution preparation, etc., can solve problems such as easy oxidation, easy aggregation of ultrafine particles, and color of tea polyphenols

Inactive Publication Date: 2011-06-08
JIANGNAN UNIV
View PDF2 Cites 32 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial agent used is inorganic ultrafine particles containing silver or zinc or copper ions, or inorganic zeolite ultrafine particles containing silver, zinc or copper ions, or zinc oxide, zinc sulfate, titanium dioxide, or chitin, chitosan Sugar ultrafine particles, but the ultrafine particles have the disadvantage of being easy to agglomerate
Gao Weidong et al. prepared a tea polyphenol / polylactic acid composite nanofiber membrane. Although it has a good antibacterial effect on Escherichia coli and Staphylococcus aureus, tea polyphenols have color and are easily oxidized.

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
  • Polylactic acid antibacterial nanofiber membrane and preparation method thereof
  • Polylactic acid antibacterial nanofiber membrane and preparation method thereof
  • Polylactic acid antibacterial nanofiber membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0024] Preparation of antibacterial nanofiber material: take 2mL polyethylene glycol 400 (density is 1g / cm 3 ) into a stoppered Erlenmeyer flask, then add 170.0 mg of TCC to it, heat it at 50°C to dissolve it, then add 18 mL of dichloromethane (density 1.32 g / cm 3 ), then add 2.570g of PLLA (molecular weight: 100,000) slices into it, and stir magnetically at room temperature for 3h. Put the prepared spinning solution into an extruder equipped with a capillary (inner diameter: 0.7mm), and control the voltage Be 10kV, extrusion speed is 1mL / h, obtains the white PLLA nanofiber film on the plane receiving screen of distance from spinneret 12cm place. The antibacterial performance of the nanofiber membrane was tested by the improved shaking flask method. The antibacterial rate was evaluated according to GB-15979-2002 "Hygienic Standards for Disposable Sanitary Products". The antibacterial test results are shown in Table 1.

example 2

[0026] Preparation of antibacterial nanofiber material: take 2mL polyethylene glycol 400 (density is 1g / cm 3 ) into a stoppered Erlenmeyer flask, then add 141.7mg of TCC to it, heat it at 50°C to dissolve it, then add 18mL of dichloromethane (density 1.32g / cm 3 ), then add 2.570g of PLLA (molecular weight: 100,000) slices into it, and stir magnetically at room temperature for 3h. Put the prepared spinning solution into an extruder equipped with a capillary (inner diameter: 0.7mm), and control the voltage Be 10kV, extrusion speed is 1mL / h, obtains the white PLLA nanofiber film on the plane receiving screen of distance from spinneret 12cm place. The antibacterial performance of the nanofiber membrane was tested by the improved shaking flask method. The antibacterial rate was evaluated according to GB-15979-2002 "Hygienic Standards for Disposable Sanitary Products". The antibacterial test results are shown in Table 1.

example 3

[0028] Preparation of antibacterial nanofiber material: take 2mL polyethylene glycol 400 (density is 1g / cm 3 ) into a stoppered Erlenmeyer flask, then add 113.3 mg of TCC to it, heat it at 50°C to dissolve it, then add 18 mL of dichloromethane (density 1.32 g / cm 3 ), then add 2.570g of PLLA (molecular weight: 100,000) slices into it, and stir magnetically at room temperature for 3h. Put the prepared spinning solution into an extruder equipped with a capillary (inner diameter: 0.7mm), and control the voltage Be 10kV, extrusion speed is 1mL / h, obtains the white PLLA nanofiber film on the plane receiving screen of distance from spinneret 12cm place. The antibacterial performance of the nanofiber membrane was tested by the improved shaking flask method. The antibacterial rate was evaluated according to GB-15979-2002 "Hygienic Standards for Disposable Sanitary Products". The antibacterial test results are shown in Table 1.

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
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a polylactic acid antibacterial nanofiber membrane and a preparation method thereof, which belong to the technical field of functional spinning. An antibacterial agent is added into polylactic acid, and an electrostatic spinning technology is adopted to prepare the polylactic acid antibacterial nanofiber membrane with high antibacterial activity. The antibacterial agent in the fiber membrane is triclocarban (TCC). The nanofiber membrane comprises 95 or 94 mass percent of polylactic acid and 5 or 6 mass percent of antibacterial activity TCC. The obtained antibacterial fiber membrane can inhibit over 93 percent of staphylococcus aureus, escherichia coli and candida albicans. The antibacterial fiber membrane can be applied to the fields of daily use, spinning, industry and medicaments.

Description

technical field [0001] The invention relates to a PLLA antibacterial nanofiber film and a preparation method thereof, belonging to the field of antibacterial superfine fiber materials and preparation thereof. Background technique [0002] Polylactic acid (PLLA) is an important derivative of lactic acid. It has good biocompatibility and biodegradability. It can be gradually degraded into carbon dioxide and water in the living body. It is non-toxic and non-accumulating to the human body, so it is recognized as a It is the most promising biodegradable and renewable functional material in the 21st century. At present, polylactic acid has been made into multifilament, monofilament, staple fiber, false twist textured yarn, knitted fabric and nonwoven fabric, etc., and is used in clothing, industry and medical and health fields. [0003] When the fiber diameter shrinks from micron (such as 10 ~ 100μm) to submicron or nanometer (such as 10×10 -3 ~100×10 -3 μm), polymer fibers exh...

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 Applications(China)
IPC IPC(8): D04H3/00D01D1/02D01D5/00D01F6/92D01F1/10D04H1/728
Inventor 黄丹沈云邵彩英李慧红
Owner JIANGNAN UNIV
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