Water degradable film containing hyaluronic acid or salt thereof and polyphenol compounds

Patent metadata

Field	Value
Publication number	US-11834560-B2
Application number	US-202016934475-A
Country	US
Kind code	B2
Filing date	Jul 21, 2020
Priority date	Sep 9, 2019
Publication date	Dec 5, 2023
Grant date	Dec 5, 2023

Abstract

The present invention relates to a water degradable film comprising hyaluronic acid or a salt thereof and polyphenol compounds. The film of the present invention can transcribe nanofilms in the form of CNT (carbon nanotube), graphene and magnetic particles to various places. The film of the present invention can be dissolved by an aqueous solution or body fluid, and can be effectively used in the medical field since it is non-toxic and biocompatible. The film of the present invention can also be effectively used as a transcript that does not degrade the quality and performance of the device because no residue remains in the electronic device and the existing photolithography process.

First claim

What is claimed is:

1. A water degradable film for transferring or transcribing nanomaterials without leaving residues, said water degradable film consisting of:
a nanomaterial; and
a water degradable film consisting of hyaluronic acid or a salt thereof and a polyphenol compound, wherein the polyphenol compound is bonded to at least a part of the hyaluronic acid main chains through hydrogen bonding,
wherein the nanomaterial comprises one or more selected from the group consisting of carbon nanotube, graphene, graphene oxide and magnetic nanoparticle, and
wherein the polyphenol compound is one or more compounds selected from the group consisting of tannic acid, isoflavone, catechin, curcumin, tannin, hydroxy benzoic acid, hydroxy cinnamic acid, flavonoid, lignan, stilbene, caffeic acid, chlorogenic acid, anthocyan, pyrogallol, ellagic acid, gallic acid, theaflavin-3-gallate, resveratrol, kaempferol, quercetin, myricetin, luteolin, delphinidin, cyanidin, ampelopsin, hesperidin, aurantinidine, europinidin, pelargonidin, malvidin, peonidin, petunidin and rosinidin.

2. The water degradable film for transferring or transcribing nanomaterials without leaving residues according to claim 1 , wherein the nanomaterial is any one form selected from the group consisting of nanowire, nanorod, nanosheet, nanoplate, nanosphere, nanotube, nanodiamond, nanofiber, nanoneedle, nanoparticle and nanofilm.

3. A preparation method of a water degradable film of claim 1 comprising the following steps:
(a) preparing an aqueous solution by mixing hyaluronic acid or its salt and the polyphenol compound in water;
(b) applying the aqueous solution of step 1 on the substrate introduced with the nanomaterials;
(c) forming the water degradable film of claim 1 on the substrate by drying the substrate of step (b); and
(d) separating the film prepared in step (c) from the substrate.

4. The preparation method according to claim 3 , wherein the polyphenol compound is mixed in an amount of 0.05 to 10 weight part based on 1 weight part of the hyaluronic acid or its salt in step (a).

5. A method for transferring or transcribing nanomaterials without leaving residues comprising the following steps:
attaching the water degradable film of claim 1 to a selected location where nanomaterials are to be introduced; and
decomposing and removing the film using water so that only the nanomaterial remains at the selected location.

6. The water degradable film according to claim 1 , wherein the film includes the polyphenol compound in an amount of 0.05 to 10 weight part based on 1 weight part of the hyaluronic acid or its salt.

7. The water degradable film according to claim 1 , wherein the film is characterized in that it is biodegradable.

Assignees

• Korea Res Inst Chemical Tech

Inventors

• Lee Jae-Hyeok
• Park Sun-Hyun
• Kim Ki-Suk

Classifications

• C08J5/18 Primary

  Manufacture of films or sheets · CPC title

• C08K5/13

  Phenols; Phenolates · CPC title

• C08L5/08

  Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title