Amphiphilic hydrogel particles for antifouling paint and method of fabricating the same

Patent metadata

Field	Value
Publication number	US-9617434-B2
Application number	US-201514923792-A
Country	US
Kind code	B2
Filing date	Oct 27, 2015
Priority date	May 6, 2015
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

This invention relates to amphiphilic hydrogel particles for antifouling paint, which are environmentally friendly and in which anti-corrosion and antifouling effects can be maximized through a single coating process. The amphiphilic hydrogel particles are fabricated by encapsulating conducting polymer particles having anti-corrosion functionality with functional nanoparticles having antifouling functionality and then immobilizing the functional nanoparticles on a hydrogel matrix, whereby the conducting polymer particles contained in the functional nanoparticles are slowly and continuously released or the release rate thereof can be controlled so as to release the corresponding particles in a specific environment, ultimately maintaining long-term functionality. The conducting polymer particles contained in the amphiphilic functional nanoparticles can exhibit anti-corrosion functionality, thus maximizing anti-corrosion and antifouling effects through a single coating process.

First claim

The invention claimed is:

1. Amphiphilic hydrogel particles for antifouling paint, comprising:
conducting polymers;
functional nanoparticles in vesicle form containing the conducting polymers therein; and
a hydrogel matrix on which the functional nanoparticles are immobilized.

2. The amphiphilic hydrogel particles of claim 1 , wherein the functional nanoparticles comprise a lipid, perfluoropolyether (PFPE) and cholesterol.

3. The amphiphilic hydrogel particles of claim 2 , wherein the functional nanoparticles comprise the lipid, the PFPE and the cholesterol at a molar ratio of 8 to 6:1 to 3:1.

4. The amphiphilic hydrogel particles of claim 1 , wherein the functional nanoparticles have antifouling functionality.

5. The amphiphilic hydrogel particles of claim 1 , comprising, based on a total weight of the amphiphilic hydrogel particles:
5 to 15 wt % of the conducting polymers;
30 to 50 wt % of the functional nanoparticles; and
35 to 65 wt % of the hydrogel matrix.

6. The amphiphilic hydrogel particles of claim 1 , wherein the conducting polymers have anti-corrosion functionality.

7. The amphiphilic hydrogel particles of claim 1 , wherein the conducting polymers comprise pyrrole-based polymers.

8. The amphiphilic hydrogel particles of claim 2 , wherein the lipid has a hydrophilic head group and a hydrophobic tail group.

9. The amphiphilic hydrogel particles of claim 2 , wherein the lipid comprises a surfactant-based lipid.

10. The amphiphilic hydrogel particles of claim 1 , wherein the functional nanoparticles have a particle size of 60 to 150 nm.

11. A method of fabricating amphiphilic hydrogel particles for antifouling paint using a microfluidic chip, the microfluidic chip comprising: a platform; a main channel formed in the platform to provide a vesicle-forming space; a first inlet channel for feeding a first component into the main channel; a discharge part for discharging a vesicle from the main channel; a second inlet channel located between the first inlet channel for feeding the first component into the main channel and the discharge part and configured such that a second component is fed into the main channel; and a micro-stencil, which is disposed at an outlet of the second inlet channel and has a plurality of microholes through which the component fed into the second inlet channel passes, the method comprising:
feeding conducting polymers into the first inlet channel;
feeding a lipid, PFPE and cholesterol into the second inlet channel, thus forming functional nanoparticles in vesicle form containing the conducting polymers therein; and
immobilizing the functional nanoparticles on a hydrogel matrix,
wherein a flow rate of the component fed into the first inlet channel or the second inlet channel is adjusted, thereby controlling a particle size of the functional nanoparticles.

Assignees

• Korea Inst Ocean Sci & Tech

Inventors

• Ko Jin Hwan
• Lee Kwang-Soo
• Park Jin-Soon
• Jung Ho Sup
• Kwak Moon Kyu

Classifications

• C09D5/1637 Primary

  Macromolecular compounds · CPC title

• C09D5/1625

  organic · CPC title

• C09D5/082

  characterised by the anti-corrosive pigment · CPC title

• C09D5/1687

  Use of special additives · CPC title