Conductive composites and compositions for producing the same, and production methods thereof

Patent metadata

Field	Value
Publication number	US-2017092388-A1
Application number	US-201615273898-A
Country	US
Kind code	A1
Filing date	Sep 23, 2016
Priority date	Sep 24, 2015
Publication date	Mar 30, 2017
Grant date	—

Abstract

An electrically conductive composite including: a polymer matrix including a cellulose, and a plurality of electrically conductive carbon nanoparticles dispersed in the polymer matrix, wherein the electrically conductive carbon nanoparticles have a multiple hydrogen bonding moiety covalently bound to a surface thereof.

First claim

What is claimed is:

1 . An electrically conductive composite comprising:
a polymer matrix comprising a cellulose; and a plurality of electrically conductive carbon nanoparticles dispersed in the polymer matrix, wherein the electrically conductive carbon nanoparticles have a multiple hydrogen bonding moiety on a surface thereof.

2 . The electrically conductive composite of claim 1 , wherein the cellulose comprises a regenerated cellulose.

3 . The electrically conductive composite of claim 1 , wherein the electrically conductive carbon nanoparticles comprise a carbon nanotube, a graphene nanoparticle, a carbon nanofiber, carbon black, a carbonized nano-cellulose, or a combination thereof.

4 . The electrically conductive composite of claim 1 , wherein the multiple hydrogen bonding moiety comprises at least two hydrogen-bonding sites.

5 . The electrically conductive composite of claim 1 , wherein the multiple hydrogen bonding moiety comprises at least two moieties selected from a urea moiety, a pyridine moiety, a pyrimidine moiety, a pyrimidinone moiety, a triazine moiety, a purine moiety, an ether moiety, an amino moiety, an amide moiety, a naphthyridine moiety, and —CF 3 .

6 . The electrically conductive composite of claim 1 , wherein the multiple hydrogen bonding moiety comprises a moiety represented by any one of Chemical Formulae 1 to 4 or a derivative thereof:

wherein * depicts linking to an adjacent atom;

wherein * depicts linking to an adjacent atom;

wherein
X is —CH═ or —N═,
R is H or a C1 to C10 alkyl, and
* depicts linking to an adjacent atom; and

wherein
R is a substituted or unsubstituted C1 to C10 alkyl group or a substituted or unsubstituted C6 to C40 aryl group, and
* depicts linking to an adjacent atom.

7 . The electrically conductive composite of claim 1 , wherein the multiple hydrogen bonding moiety is bonded to the electrically conductive particles via a linker derived from a diisocyanate group.

8 . The electrically conductive composite of claim 1 , wherein an amount of the electrically conductive carbon nanoparticles is greater than or equal to about 0.5 percent by weight and less than or equal to about 60 percent by weight, based on the total weight of the electrically conductive composite.

9 . The electrically conductive composite of claim 1 , wherein the composite is a fiber, a film, a fiber assembly, or a combination thereof.

10 . The electrically conductive composite of claim 9 , wherein the composite is a composite fiber and the composite fiber has a tensile strength of greater than or equal to about 150 megaPascals and an initial modulus of greater than or equal to about 11 gigaPascals.

11 . The electrically conductive composite of claim 1 , wherein the composite has electrical conductivity of greater than or equal to about 9×10 −4 Siemens per meter.

12 . A composition for preparing an electrically conductive composite, comprising:
a cellulose; a plurality of electrically conductive carbon nanoparticles having a multiple hydrogen bonding moiety covalently bound to a surface thereof; dimethyl acetamide; and lithium chloride, wherein the cellulose is dispersed in the composition without being precipitated.

13 . The composition of claim 12 , wherein composition comprises:
about 0.1 percent by weight to about 20 percent by weight of lithium chloride; about 0.1 percent by weight to about 20 percent by weight of the cellulose; about 0.01 percent by weight to about 30 percent by weight of the electrically conductive carbon nanoparticle; and a balance of dimethylacetamide, based on the total weight of the composition.

14 . The composition of claim 12 , wherein the multiple hydrogen bonding moiety of the electrically conductive carbon nanoparticle comprises at least two moieties selected from a urea moiety, a pyridine moiety, a pyrimidine moiety, a pyrimidinone moiety, a triazine moiety, a purine moiety, an ether moiety, an amino moiety, an amide moiety, a naphthyridine moiety, and —CF 3 .

15 . The composition of claim 12 , wherein the multiple hydrogen bonding moiety comprises a moiety represented by any one of Chemical Formulae 1 to 4 or a derivative thereof:

wherein * depicts linking to an adjacent atom;

wherein * depicts linking to an adjacent atom;

wherein
X is —CH═ or —N═,
R is H or a C1 to C10 alkyl, and
* depicts linking to an adjacent atom; and

wherein
R is a substituted or unsubstituted C1 to C10 alkyl group or a substituted or unsubstituted C6 to C40 aryl group, and
* depicts linking to an adjacent atom.

16 . An electronic device comprising the composite of claim 1 .

Assignees

• Samsung Electronics Co Ltd
• The Ind & Acad Coop In Chungnam Nat Univ
• Korea Res Inst Chemical Tech

Inventors

• Lee Sang Eui
• JEONG Yeonggyu
• Lee Taewon
• Han Mi Jeong
• Han In Taek

Classifications

• C08B16/00

  Regeneration of cellulose · CPC title

• H01B1/24 Primary

  the conductive material comprising carbon-silicon compounds, carbon or silicon · CPC title

• C08B15/00

  Preparation of other cellulose derivatives or modified cellulose {, e.g. complexes} · CPC title