Self-adhesive multi-fiber materials

Patent metadata

Field	Value
Publication number	US-12440601-B2
Application number	US-202117201446-A
Country	US
Kind code	B2
Filing date	Mar 15, 2021
Priority date	Apr 3, 2020
Publication date	Oct 14, 2025
Grant date	Oct 14, 2025

Abstract

Provided is a multi-fiber system that undergoes new chemical bonds in response to mechanical manipulation and has self-adhesive properties based on specific chemical reactions.

First claim

What is claimed:

1. A fibrous composition, comprising:
a first fiber population that comprises a plurality of first fibers having a first bonding group disposed at least on a surface of the first fibers,
the first fibers comprising a first matrix material; and
a second fiber population that comprises a plurality of second fibers having a second bonding group disposed at least on a surface of the second fibers, and
the second fibers comprising a second matrix material,
the first bonding group being configured to interact with the second bonding group so as to introduce crosslinks between at least one fiber of the first fiber population and at least one fiber of the second fiber population upon application of a mechanical manipulation that reduces a distance between the first and the second bonding groups, and
wherein the crosslinks persist following application of the mechanical manipulation, wherein the fibrous composition retains a shape achieved following application of the mechanical manipulation.

2. The fibrous composition of claim 1 , wherein a crosslink comprises a covalent bond.

3. The fibrous composition of claim 1 , wherein a crosslink comprises an ionic bond.

4. The fibrous composition of claim 1 , wherein a crosslink comprises a pi-pi orbital interaction.

5. The fibrous composition of claim 1 , wherein at least one of the first bonding group and the second bonding group comprises acrylate, acrylamide, optionally protected alcohol, aldehyde, alkyne, optionally protected amine, anhydride, azide, carboxy, epoxy, ester, hydrazide, ketone, maleimide, methacrylate, styrenyl, optionally protected thiol, vinyl or vinyl sulfone group, or any combination thereof.

6. The fibrous composition of claim 1 , wherein at least one of the first bonding group and the second bonding group comprises a protein, a nucleic acid, an aptamer, a peptide, or any combination thereof.

7. The fibrous composition of claim 1 , wherein a crosslink comprises an alpha-cyclodextrin/hexyl group pair, an alpha-cyclodextrin/polyethylene oxide group pair, a beta-cyclodextrin/adamantane group pair, a beta-cyclodextrin/cyclohexyl group pair, a beta-cyclodextrin/benzyl group pair, a gamma-cyclodextrin/cyclodecyl group pair, a cucurbituril/hexanediamine group pair, a cucurbituril/spermine group pair, or any combination thereof.

8. The fibrous composition of claim 1 , wherein at least one of the fiber populations comprises agarose, alginate, RGD-modified alginate, amylase, amylpectin, cellulose, chitosan, collagen, keratin, elastin, fibronectin, dextran, fibrin, gelatin, glycogen, heparin, hyaluronic acid, poly(acrylamide), poly(β-aminoester), poly(caprolactone), solubilized basement membrane matrix secreted by Engelbreth-Holm-Swarm (EHS) mouse sarcoma cells, multi-arm polyethylene glycol, poly-hydroxyethyl acrylate, poly(hydroxyethyl methacrylate), poly(N-isopropylacrylamide), poly(glycolic acid), poly(lactic acid), poly(lactic acid-glycolic acid), oligo(poly(ethylene glycol)fumarate), poly(vinyl alcohol), poly(vinyl acid), or any combination thereof.

9. The fibrous composition of claim 1 , wherein (a) the first fiber population comprises the first bonding group and a third bonding group, the first and third bonding groups differing from one another, or (b) the second fiber population comprises the second bonding group and a fourth bonding group, the second and fourth bonding groups differing from one another, or both (a) and (b).

10. The fibrous composition of claim 1 , further comprising an additive, the additive optionally comprising a bioactive molecule, a medicament, a drug, a neutraceutical, or any combination thereof.

11. The fibrous composition of claim 1 , wherein the mechanical manipulation comprises stretching, twisting, bending, compressing, shearing or any combination thereof.

12. The fibrous composition of claim 1 , wherein the fibrous composition is configured to adhere to a bodily tissue.

13. The fibrous composition of claim 1 , wherein one or both of the first fiber population and the second fiber population are arranged in a ply.

14. The fibrous composition of claim 1 , wherein the first fibers comprise processed fibers and wherein the second fibers comprise processed fibers.

Assignees

• Univ Pennsylvania

Inventors

• Davidson Matthew
• Burdick Jason Alan

Classifications

• C09J9/00

  Adhesives characterised by their physical nature or the effects produced, e.g. glue sticks (C09J7/00 takes precedence) · CPC title

• C09J105/08

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

• A61L24/0015

  Medicaments; Biocides · CPC title

• C08L5/08

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

• C08B37/0072

  Hyaluronic acid, i.e. HA or hyaluronan; Derivatives thereof, e.g. crosslinked hyaluronic acid (hylan) or hyaluronates · CPC title