Coating layers of a nanocomposite comprising a nano-cellulose material and nanoparticles
US-10294383-B2 · May 21, 2019 · US
Enhanced radiation shielding with conformal, lightweight nanoparticle-polymer composite
US11414548B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11414548-B2 |
| Application number | US-202016749400-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 22, 2020 |
| Priority date | Jan 22, 2019 |
| Publication date | Aug 16, 2022 |
| Grant date | Aug 16, 2022 |
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Abstract
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Disclosed is a composite material, comprising a polymer, a plurality of metal nanoparticles, and a surface-modifying agent (e.g., nanocellulose). Also disclosed is a method for shielding a subject from electromagnetic radiation, comprising placing one or more composite materials between the subject and a source of electromagnetic radiation, thereby reducing a dose of electromagnetic radiation received by the subject.
First claim
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What is claimed is: 1. A composite material, comprising a polymer, a plurality of metal nanoparticles, and a surface-modifying agent, wherein: the polymer is selected from the group consisting of polydimethylsiloxane (PDMS), polyamide, polyacrylonitrile, polyethylene, polypropylene, polyvinyl chloride, epoxy resin, polyimide, polyurethane, polyurethane polyvinylidene fluoride, and polyvinylidene difluoride; the surface-modifying agent is nanocellulose; the surface-modifying agent and the polymer form an interpenetrating network; and the plurality of metal nanoparticles comprises metal nanoparticles selected from the group consisting of lead nanoparticles, tungsten nanoparticles, bismuth nanoparticles, and uranium nanoparticles. 2. The composite material of claim 1 , wherein the polymer is PDMS. 3. The composite material of claim 1 , wherein the plurality of metal nanoparticles comprises bismuth nanoparticles. 4. The composite material of claim 1 , wherein the average size of the plurality of metal nanoparticles is from 1 nm to 40,000 nm. 5. The composite material of claim 1 , wherein the average size of the plurality of metal nanoparticles is 5 nm. 6. The composite material of claim 1 , wherein the amount of the plurality of metal nanoparticles in the composite material is from 0.5 wt. % to 40 wt. %. 7. The composite material of claim 1 , wherein the amount of the plurality of metal nanoparticles in the composite is 2 wt. %. 8. The composite material of claim 1 , wherein nanocellulose comprises cellulose nanofibers. 9. The composite material of claim 1 , wherein nanocellulose comprises cellulose nanocrystals. 10. The composite material of claim 1 , wherein the amount of nanocellulose in the composite material is from 0.5 wt. % to 40 wt. %. 11. A film comprising at least one composite material of claim 1 . 12. A method for shielding a subject from electromagnetic radiation, comprising placing at least one composite material of claim 1 between the subject and a source of electromagnetic radiation, thereby reducing a dose of electromagnetic radiation received by the subject. 13. The method of claim 12 , wherein the dose of electromagnetic radiation received by the subject is reduced by an amount from 95% to 99%. 14. The method of claim 12 , wherein the dose of electromagnetic radiation received by the subject is reduced by at least 96%. 15. The method of claim 12 , wherein the electromagnetic radiation is X-ray radiation.
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- What does patent US11414548B2 cover?
- Disclosed is a composite material, comprising a polymer, a plurality of metal nanoparticles, and a surface-modifying agent (e.g., nanocellulose). Also disclosed is a method for shielding a subject from electromagnetic radiation, comprising placing one or more composite materials between the subject and a source of electromagnetic radiation, thereby reducing a dose of electromagnetic radiation r…
- Who is the assignee on this patent?
- Univ Northeastern
- What technology area does this patent fall under?
- Primary CPC classification C08L83/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Aug 16 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).