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Polyethylenimine nanoparticle-containing microbicidal electrospun polymer fibers for textile applications

A technology of polyethyleneimine and nanoparticles, which can be used in textiles and papermaking, chemical post-treatment of synthetic polymer artificial filaments, textiles, etc., and can solve problems such as non-inclusion

Inactive Publication Date: 2009-10-21
SCHOELLER TEXTIL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] To date, the prior art does not include a method for permanently or temporarily coating textile fibers with polyethyleneimine particles, thereby imparting an antimicrobial effect on the fibers

Method used

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  • Polyethylenimine nanoparticle-containing microbicidal electrospun polymer fibers for textile applications
  • Polyethylenimine nanoparticle-containing microbicidal electrospun polymer fibers for textile applications
  • Polyethylenimine nanoparticle-containing microbicidal electrospun polymer fibers for textile applications

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Experimental program
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Embodiment Construction

[0068] 1. Production of polyethyleneimine nanoparticles

[0069] According to "Mission Accomplished" polyethyleneimine nanoparticles were produced. In this case, 1,5-dibromopentane was used as crosslinker in the first reaction step. In the second reaction step, the alkylation of the crosslinked PEI, 2-bromooctane was used. In the third reaction step - quaternization of the second and third amino groups of PEI, methyl iodide in tetrahydrofuran was used.

[0070] 2. Production of PVB-based antibacterial nanofibers

[0071] Polyvinyl butyral (PVB, trade name Mowital), a polymer soluble in ethanol, was used.

[0072] Repeating unit of polyvinyl butyral:

[0073]

[0074] First, polyvinyl butyral (Mw=19640, Mn=159000, Mw / Mn=1.23) was dissolved in ethanol by stirring at room temperature. The concentrations of the prepared solutions were 10% by weight and 15% by weight. In order to provide the fibers with an antimicrobial coating, in each case 2% by weight of quaternized PEI...

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Abstract

The invention relates to polymer fibers with microbicidal properties, comprising at least one polymer that can be electrospun and nanoparticle-containing quaternized polyethylenimine and to a method for producing said fibers. The use of the polyethylenimine nanoparticles (PEIN) allows polymers that can be electrospun to be provided with a microbicidal finish. A prerequisite for this is that the polyethylenimine nanoparticles are particles from derived polyethylenimine (PEI), since pure, underived PEI has no antibacterial effect. Preferably, quaternized polyethylenimine is used. The polymers that can be electrospun are coated with PEIN either during and / or after electrospinning. The polymer fibers that can be obtained by the method according to the invention can be used for textile fibers, for example for producing fibers for activity clothing, protective clothing for medical staff and protective clothing for patients, for medical drapes and dressings or for nonwovens or fiber mats for cell culture substrates.

Description

technical field [0001] The invention relates to the fields of macromolecule chemistry, process flow science, textile and material science. Background technique [0002] A person skilled in the art knows various processes for the production of nanofibers and mesogenic fibers, of which the electrospinning process is the most important today. In this process, described for example by D.H. Reneker, H.D. Chun in Nanotechnology No. 7 (1996), starting on page 216, polymer melts or polymer solutions are usually exposed to high electric fields acting as electrodes edge. To do this, polymer melts or polymer solutions can be extruded in a low-voltage electric field, for example, via a cannula connected to one pole of a power supply. Due to the resulting electrostatic charge of the polymer melt or polymer solution, a mass flow towards the counter electrode is generated and solidifies on the way to the counter electrode. Depending on the surface shape of the electrodes, nonwovens or a...

Claims

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Application Information

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IPC IPC(8): D01F1/10D01F11/04D06M15/61D06M16/00D06M23/08A61L15/22
CPCD06M15/61D06M23/08D01F1/103A61L15/26A61L31/129D06M16/00D01F11/04A61L31/06Y10T428/249921Y10T442/60C08L79/02
Inventor 安德烈亚斯·格赖纳托斯坦·勒克尔
Owner SCHOELLER TEXTIL
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