Bioactive glass/polymer composite filament, and methods of making

Patent metadata

Field	Value
Publication number	US-11433598-B2
Application number	US-201916241381-A
Country	US
Kind code	B2
Filing date	Jan 7, 2019
Priority date	Jan 8, 2018
Publication date	Sep 6, 2022
Grant date	Sep 6, 2022

Abstract

Bioactive glass compositions, composites of the bioactive glass compositions with polymers, and 3D printable filaments made from the same, along with methods of making and using the same, are described. In some embodiments, the compositions, composites, and filaments have antibacterial activity.

First claim

What is claimed is:

1. A bioactive glass composition comprising:
one or more elemental former components comprising an element of the group consisting of: Si, Ge, and B;
one or more modifier components comprising an element of the group consisting of: Ca, Na, Mg, Sr, Cl, Co, Fe, Ba, Mo, and Cr, wherein the one or more modifier components comprises at least SrO; and
one or more additive components comprising an element of the group consisting of: Ag, Au, Zn, K, P, Cu, Se, Ga, Ti, and V, wherein the one or more additive components comprises at least ZnO and K 2 O;
wherein the one or more elemental former components are present in a combined amount ranging from about 40 mol % to about 65 mol %, the one or more modifier components are present in a combined amount ranging from about 10 mol % to about 50 mol %, the one or more additive components is present in a combined amount ranging from about 10 mol % to about 40 mol %, and the ZnO is present in an amount ranging from about 10 mol % to about 15 mol %.

2. The bioactive glass composition of claim 1 , wherein the one or more modifier components are present in a combined amount of from about 35 mol % to about 50 mol %.

3. The bioactive glass composition of claim 1 , wherein the one or more additive components are present in a combined amount of up to about 30 mol %.

4. The bioactive glass composition of claim 1 , comprising a plurality of additive components, wherein the plurality of additive components comprises Zn, K, and Cu.

5. The bioactive glass composition of claim 1 , comprising Si, Na, Sr, K, Mg, and Zn.

6. The bioactive glass composition of claim 1 , comprising SiO 2 , Na 2 O, SrO, K 2 O, and ZnO.

7. The bioactive glass composition of claim 1 , wherein the ZnO is present at an amount of 10 mol %.

8. The bioactive glass composition of claim 1 , further comprising MgO.

9. The bioactive glass composition of claim 8 , wherein the MgO is present in an amount ranging from about 1 mol % to about 30 mol %.

10. The bioactive glass composition of claim 1 , wherein the modifier component comprising Na is Na 2 O.

11. The bioactive glass composition of claim 10 , wherein the K 2 O is present in an amount of about 5 mol %, and the Na 2 O is present in an amount of about 10 mol %.

12. The bioactive glass composition of claim 1 , further comprising an additive selected from the group consisting of coloring agents, plasticizers, antioxidants, thermal stabilizers, UV stabilizers, flame retardants, lubricants, antistatic agents, foaming agents, antifogging agents, nucleating agents, antiblocking agents, slip agents, and radio-opaque agents.

13. The bioactive glass composition of claim 1 , wherein the bioactive glass composition releases antibacterial ions.

14. The bioactive glass composition of claim 1 , wherein the bioactive glass composition is in a polymer filament, and wherein the polymer filament comprises polylactic acid (PLA), polyglycolide (PGA), acrylonitrile butadiene styrene (ABS), polypropylene (PP), polyethylene (PE), polyether ether ketone (PEEK), high impact polystyrene (HIPS), ethylene vinyl acetate (EVA), rubber, nylon, thermoplastic polyolefin (TPO), or a blend thereof.

15. The bioactive glass composition of claim 1 , wherein the bioactive glass composition is in the form of glass fibers or glass powders.

16. A composite comprising a polymer having bioactive glass particles or fibers of claim 15 incorporated therein.

17. The composite of claim 16 , wherein the bioactive glass particles or fibers comprise SiO 2 , Na 2 O, SrO, K 2 O, MgO, and ZnO.

18. The composite of claim 16 , wherein the composite releases ions and exhibits antibacterial activity.

19. The composite of claim 16 , wherein the composite is formed into packaging for food or medical devices, wherein the packaging has antibacterial properties.

Assignees

• Univ Toledo

Inventors

• Coughlan Aisling
• Krull Emily

Classifications

• C03C3/076 Primary

  with 40% to 90% silica, by weight {(C03C3/045 takes precedence)} · CPC title

• B33Y10/00 Primary

  Processes of additive manufacturing · CPC title

• B33Y40/10

  Pre-treatment · CPC title

• B33Y70/10

  Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials · CPC title

• C03C3/078

  containing an oxide of a divalent metal, e.g. an oxide of zinc · CPC title