Compositions containing borane or carborane cage compounds and related applications
View Patent ↗Compositions comprising a polymer-containing matrix and a filler comprising a cage compound selected from borane cage compounds, carborane cage compounds, metal complexes thereof, residues thereof, mixtures thereof, and/or agglomerations thereof, where the cage compound is not covalently bound to the matrix polymer. Methods of making and applications for using such compositions are also disclosed.
1. A composition comprising:
a matrix comprising a polymer, wherein said polymer comprises less than 90 weight percent of a poly(conjugated diene), wherein said polymer comprises less than 90 weight percent of a polysiloxane; and
a nanofiller comprising a mixture of agglomerations of cage compounds selected from the group consisting of a borane cage compound, a metal complex thereof, and a residue thereof, wherein said cage compounds comprise at least 7 cage atoms,
wherein said cage compounds are not covalently bound to said polymer, and wherein said composition is a nanocomposite, wherein said nanocomposite has an increased or decreased glass transition temperature, storage modulus, loss modulus, thermal stability, or melt viscosity, as compared to said polymer.
2. The composition of claim 1 , wherein said polymer comprises less than 10 weight percent of a poly(conjugated diene), wherein said polymer comprises less than 10 weight percent of a polysiloxane.
3. The composition of claim 1 , wherein one of said cage compounds comprises a borane cage compound having 12 cage atoms, wherein said cage compound has an icosahedral structure.
4. The composition of claim 1 , wherein one of said cage compounds comprises one or more pendant groups selected from the group consisting of a C 1 to C 20 n-alkyl, a hydroxy, a carboxy, an epoxy, an isocyanate, a primary amine, a silyl, and an alkoxy silyl.
5. The composition of claim 1 , wherein one of said cage compounds is selected from the group consisting of:
(a) a closo-borane salt having the general formula [B n H n ]X 2 , wherein n is in the range of from 7 to 12, and X is selected from the group consisting of Li + , Na + , K + , Cs + , and a quaternary ammonium;
(b) a closo-borane salt having the general formula [B n H m (OR) p ]X 2 , wherein n is in the range of from 7 to 12, wherein m+p=n, with p being in the range of from 1 to 12, each R is independently selected from the group consisting of a hydrogen atom and an aliphatic group, and X is selected from the group consisting of Li + , Na + ,K + , Cs + , and a quaternary ammonium; and
(c) mixtures of two or more thereof.
6. The composition of claim 1 , wherein said matrix comprises a plurality of polymers.
7. The composition of claim 1 , wherein said polymer is selected from the group consisting of an epoxy polymer, a polyurethane, poly(ethylene-co-vinyl acetate), poly(ethylene-co-vinyl acetate-co-vinyl alcohol), poly(ethylene-co-ethyl acrylate), poly(ethylene-co-octene), a polycyanurate, and mixtures of two or more thereof.
8. The composition of claim 1 , wherein said polymer constitutes at least 50 weight percent of said matrix, wherein said cage compounds constitute at least 50 weight percent of said nanofiller, wherein said nanofiller is present in said composition in an amount in the range of from about 0.01 to about 75 weight percent based on the entire weight of said composition, wherein said polymer is present in said composition in an amount in the range of from about 25 to about 99.99 weight percent based on the entire weight of said composition.
9. The composition of claim 1 , wherein said nanofiller further comprises a material selected from the group consisting of carbon nanotubes, carbon fullerenes, polyhedral oligomeric silsesquioxane, boron nitride nanotubes, clay, and mixtures of two or more thereof.
10. The composition of claim 1 , wherein said polymer is not a sacrificial binder.
11. An article of manufacture comprising the composition of claim 1 .
12. A composition comprising:
a matrix comprising a polymer; and
a nanofiller comprising agglomerations of a cage compound selected from the group consisting of a borane cage compound, a metal complex thereof, a residue thereof, and mixtures thereof, wherein said cage compound comprises at least 7 cage atoms, wherein said cage compounds comprises less than 95 weight percent of each of ortho-[1,2-dicarbadodecaborane], meta-[1,7-dicarbadodecaborane], para-[1,12-dicarbadodecaborane], and a compound having the following structure:
wherein R is an n-alkyl group,
wherein said cage compound is not covalently bound to said polymer, and wherein said composition is a nanocomposite, wherein said nanocomposite has an increased or decreased glass transition temperature, storage modulus, loss modulus, thermal stability, or melt viscosity, as compared to said polymer.
13. The composition of claim 12 , wherein said cage compound comprises less than 10 weight percent of each of ortho-[1,2-dicarbadodecaborane], meta-[1,7-dicarbadodecaborane], para-[1,12-dicarbadodecaborane], and a compound having the following structure:
wherein R is an n-alkyl group.
14. The composition of claim 12 , wherein said cage compound comprises a borane cage compound having 12 cage atoms, wherein said cage compound has an icosahedral structure.
15. The composition of claim 12 , wherein said cage compound comprises one or more pendant groups selected from the group consisting of a C 1 to C 20 n-alkyl, a hydroxy, a carboxy, an epoxy, an isocyanate, a primary amine, a silyl, and an alkoxy silyl.
16. The composition of claim 12 , wherein said cage compound is selected from the group consisting of:
(a) a closo-borane salt having the general formula [B n H n ]X 2 , wherein n is in the range of from 7 to 12, and X is selected from the group consisting of Li + , Na + , K + , Cs + , and a quaternary ammonium;
(b) a closo-borane salt having the general formula [B n H m (OR) p ]X 2 , wherein n is in the range of from 7 to 12, wherein m+p=n, with p being in the range of from 1 to 12, each R is independently selected from the group consisting of a hydrogen atom and an aliphatic group, and X is selected from the group consisting of Li + , Na + , K + , Cs + , and a quaternary ammonium; and
(c) mixtures of two or more thereof.
17. The composition of claim 12 , wherein said matrix comprises a plurality of polymers.
18. The composition of claim 12 , wherein said polymer is selected from the group consisting of an epoxy polymer, a polyurethane, a polysiloxane, poly(ethylene-co-vinyl acetate), poly(ethylene-co-vinyl acetate-co-vinyl alcohol), styrene-butadiene-styrene, poly(ethylene-co-ethyl acrylate), poly(ethylene-co-octene), a polycyanurate, and mixtures of two or more thereof.
19. The composition of claim 12 , wherein said polymer constitutes at least 50 weight percent of said matrix, wherein said cage compound constitutes at least 50 weight percent of said nanofiller, wherein said nanofiller is present in said composition in an amount in the range of from about 0.01 to about 75 weight percent based on the entire weight of said composition, wherein said polymer is present in said composition in an amount in the range of from about 25 to about 99.99 weight percent based on the entire weight of said composition.
20. The composition of claim 12 , wherein said nanofiller further comprises a material selected from the group consisting of carbon nanotubes, carbon fullerenes, polyhedral oligomeric silsesquioxane, boron nitride nanotubes, clay, and mixtures of two or more thereof.
21. An article of manufacture comprising the composition of claim 12 .
22. The composition of claim 12 , wherein said cage compound is selected from the group consisting of:
and mixtures of two or more thereof,
wherein X is selected from the group consisting of Li + , Na + , K + , Cs + , and quaternary ammonium cations,
wherein n is in the range of from 1 to 11.
23. The composition of claim 1 , wherein one of said cage compounds is selected from the group consisting of:
and mixtures of two or more thereof,
wherein X is selected from the group consisting of Li + , Na + , K + , Cs + , and quaternary ammonium cations,
wherein n is in the range of from 1 to 11.