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Polymer macroparticle of which surface is modified by mesoparticle and nanoparticle, nanoparticle-polymer composite using the same, and preparation thereof

A nanoparticle modification, nanoparticle technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve problems such as difficulty in preparing nanoparticle-polymer composite materials

Inactive Publication Date: 2009-05-27
SILVIX
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a nanoscale particle (secondary particle) is attached to the surface of a large particle (parent particle), a large amount of condensation occurs during the adhesion of the nanoparticle to the surface of the large particle, so it is difficult to prepare the nanoparticle Nanoparticle-polymer composites that are dispersed rather than massively condensed

Method used

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  • Polymer macroparticle of which surface is modified by mesoparticle and nanoparticle, nanoparticle-polymer composite using the same, and preparation thereof
  • Polymer macroparticle of which surface is modified by mesoparticle and nanoparticle, nanoparticle-polymer composite using the same, and preparation thereof
  • Polymer macroparticle of which surface is modified by mesoparticle and nanoparticle, nanoparticle-polymer composite using the same, and preparation thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Commercially available flakes (5 kg) of polyethylene terephthalate (PET) were pulverized into 25-30 mesh size at room temperature and introduced into a V-shaped mixer equipped with paddles. The V-shaped mixer was rotated at a speed of 180 rpm, and the paddles provided in the V-shaped mixer were independently rotated at a speed of 1200 rpm. Into the V-type mixer, slowly introduce the colloidal aqueous solution (18g) and titanium oxide (15g) (average particle diameter is 150nm~200nm) prepared by mixing silver nanoparticles (average particle diameter is 20nm~30nm) concentration is about 2000ppm) into a mixture. The obtained mixture was dried and extruded at a temperature of about 250° C. to obtain an antimicrobial PET compound in chip form.

[0055] Transmission electron microscopy (TEM) analysis of the thus obtained antimicrobial PET composite revealed that silver nanoparticles and titanium oxide particles were uniformly dispersed without agglomeration (see image 3 and...

Embodiment 2

[0057] PET flakes (5 kg) were pulverized into 25-30 mesh size at room temperature and introduced into a V-blender equipped with paddles. The V-shaped mixer was rotated at a speed of 1800 rpm, and the paddles provided in the V-shaped mixer were independently rotated at a speed of 1200 rpm. Introduce titanium oxide (15g) (average particle diameter is 150nm~200nm) in V-type mixer, then slowly introduce the colloidal aqueous solution (18g) that the concentration of silver nanoparticles (average particle diameter is not 20nm~30nm) is about 2000ppm. The obtained mixture was dried and extruded at a temperature of about 250° C. to obtain an antimicrobial PET compound in chip form.

[0058] Transmission electron microscopy (TEM) analysis of the thus obtained antimicrobial PET composite revealed that silver nanoparticles and titanium oxide particles were uniformly dispersed without agglomeration (see Figure 5 , the calibration line is 500nm).

Embodiment 3

[0060] Polypropylene (PP) chips (4 kg) were pulverized into 25-30 mesh size at room temperature and introduced into a V-blender equipped with paddles. The V-shaped mixer was rotated at a speed of 180 rpm, and the paddles provided in the V-shaped mixer were independently rotated at a speed of 1200 rpm. Prepared by mixing a colloidal aqueous solution (2.1 g) with a concentration of silver nanoparticles (average particle size of about 4 nm) of about 20,000 ppm and silica (21 g) (average particle size of 100 nm to 150 nm) into a V-shaped mixer by slowly introducing mixture. The obtained mixture was dried and extruded at a temperature of about 250° C. to obtain an antimicrobial PET compound in chip form.

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Abstract

According to the present invention, it is possible to easily provide a polymeric macroparticle of which surface is modified with mesoparticles and nanoparticles, by the step of adhering mesoparticles and nanoparticles to the surface of said polymeric macroparticle to form a composite structure of nanoparticle - mesoparticle - macroparticle, and optionally subjecting to a heat treatment to fix said mesoparticles and nanoparticles onto the surface of macroparticle. In addition, a nanoparticle-polymer composite materials can be provide from the above polymeric macroparticles of which surface is modified with mesoparticles and nanoparticles.

Description

technical field [0001] The present invention relates to a polymeric macroparticle whose surface is modified with mesoparticles and nanoparticles, a nanoparticle-polymer composite material using the polymeric macroparticle, and a method for their preparation. More specifically, the present invention relates to a polymeric macroparticle to which mesoparticles and nanoparticles are adhered or attached to modify the surface, a nanoparticle-polymer composite material obtained by mixing the polymeric macroparticle thus prepared , and their preparation methods. Background technique [0002] So far, many studies have been conducted for the development of nanoparticle-polymer composites and methods for their preparation. [0003] Conventional systems in which nanoparticles are incorporated and dispersed into a polymer matrix cannot produce composites with satisfactory properties due to the presence of changes in the state of the nanoparticles due to their high surface energy, Chang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K3/08
CPCC08K3/22C08K3/08Y10T428/2998C08L67/02C08K3/00C08J3/12B82Y30/00
Inventor 李正薰崔吉培
Owner SILVIX