Tailorable viscoelastic properties of PEG-hemiaminal organogel networks

Patent metadata

Field	Value
Publication number	US-9758620-B2
Application number	US-201514844298-A
Country	US
Kind code	B2
Filing date	Sep 3, 2015
Priority date	Sep 3, 2015
Publication date	Sep 12, 2017
Grant date	Sep 12, 2017

Abstract

Methods, compounds, and compositions described herein generally relate to hemiaminal organogel networks (HDCNs) and methods of forming HDCNs. In some embodiments, a hemiaminal organogel has a plurality of first polymers, each having a first end and a second end, a plurality of second polymers, each having a first end and a second end, and a plurality of trivalent aminal-hemiaminal linkages. The first end of each polymer of the plurality of first polymers may be covalently bonded to a first trivalent aminal-hemiaminal linkage. The second end of each polymer of the plurality of first polymers may be covalently bonded to a second trivalent aminal-hemiaminal linkage. The first end of each polymer of the plurality of second polymers may be covalently bonded to one of the plurality of trivalent aminal-hemiaminal linkages. The second end of each polymer of the plurality of second polymers may be non-covalently bonded.

First claim

What is claimed is:

1. A hemiaminal organogel comprising:
a plurality of first polymers, each having a first end and a second end;
a plurality of second polymers, each having a first end and a second end; and
a plurality of trivalent aminal-hemiaminal linkages,
wherein the first end of each polymer of the plurality of first polymers is covalently bonded to a first trivalent aminal-hemiaminal linkage of the plurality of trivalent aminal-hemiaminal linkages,
wherein the second end of each polymer of the plurality of first polymers is covalently bonded to a second trivalent aminal-hemiaminal linkage of the plurality of trivalent aminal-hemiaminal linkages,
wherein the first end of each polymer of the plurality of second polymers is covalently bonded to one of the plurality of trivalent aminal-hemiaminal linkages, and
wherein the second end of each polymer of the plurality of second polymers is non-covalently bonded.

2. The hemiaminal organogel of claim 1 , wherein the hemiaminal organogel has a storage modulus that is less than a storage modulus of a hemiaminal organogel consisting of the first polymer and the trivalent hemiaminal linkages.

3. The hemiaminal organogel of claim 1 , further comprising an organic solvent.

4. The hemiaminal organogel of claim 3 , wherein the organic solvent is polymerizable.

5. The hemiaminal organogel of claim 4 , wherein the polymerizable organic solvent is N-vinyl pyrrolidone.

6. The hemiaminal organogel of claim 3 , wherein the organic solvent is N-methyl pyrrolidone.

7. The hemiaminal organogel of claim 3 , wherein a volume fraction of the organic solvent in the hemiaminal organogel is between about 50% by volume to about 95% by volume.

8. The hemiaminal organogel of claim 1 , wherein the second end of one or more polymers of the plurality of second polymers is alkoxyl.

9. The hemiaminal organogel of claim 8 , wherein the alkoxyl second end is methoxy.

10. The hemiaminal organogel of claim 1 , wherein the second end of one or more polymer of the plurality of second polymers is hydroxyl.

11. The hemiaminal organogel of claim 10 , wherein the hydroxyl second end is a mono-ol or a diol.

12. The hemiaminal organogel of claim 1 , wherein the first polymer is polyethylene glycol.

13. The hemiaminal organogel of claim 1 , wherein the second polymer is polyethylene glycol.

14. The hemiaminal organogel of claim 1 , wherein the first polymer and the second polymer each have a number average molecular weight (Mn) of about 4.6 kDa to about 8 kDa.

15. The hemiaminal organogel of claim 1 , further comprising a plurality of third polymers, each having a first end and a second end, wherein the second end of each polymer of the plurality of third polymers is unbonded.

Assignees

• IBM

Inventors

• Boday Dylan J
• Fevre Mareva B
• Garcia Jeannette M
• Hedrick James L
• Wojtecki Rudy J
• Zhang Mu San

Classifications

• C08L2205/03

  containing three or more polymers in a blend · CPC title

• C08L39/06 Primary

  Homopolymers or copolymers of N-vinyl-pyrrolidones · CPC title

• C08G2650/50

  containing nitrogen, e.g. polyetheramines or Jeffamines(r) · CPC title

• C08G65/331

  containing oxygen {(cyclic ether compounds C08G65/26)} · CPC title

• C08L2205/025

  containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure · CPC title