Method for making nanocomposite film
AssigneeImam Abdulrahman Bin Faisal University
InventorsKhaled Fikry SALAMA, Arwa Abdulrahman AL THUMARI
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Abstract
A health care and/or entertainment device protective film may be configured to contact human skin, e.g., to limit the transmission of infection by bacteria, fungi, protozoa, prions, and/or viruses. The film may be formed as a nanocomposite film including at least 75 wt. %, relative to total organic matrix weight, of polyethylene, silver particles, and TiO2 particles, wherein the silver particles and TiO2 particles are distributed within and/or on an outer surface of the polyethylene, wherein the silver particles have a size of 1 to 1,000 nm, and wherein the TiO2 particles have a size of 1 to 50 nm. Such films may be applied to health care and/or entertainment devices, including virtual reality googles.
Claims18
(canceled)
The method of claim 11, wherein the nanocomposite film comprises, based on a total weight of the nanocomposite film:
- 1 to 5 wt. % of the silver particles;
- and
- 1 to 10 wt. % of the TiO2 particles.
The method of claim 11, wherein a thickness of the outer surface of the organic matrix is in a range of from 0.025 to 25 μm.
The method of claim 11, wherein the polyethylene in the nanocomposite film is LDPE and is present in an amount of at least 97.5 wt. % relative to the relative to the total weight of the organic matrix.
The method of claim 11, wherein the polyethylene in the nanocomposite film has a melting point in a range of from 90 to 125° C.
The method of claim 11, wherein the polyethylene in the nanocomposite film has a density in a range of from 0.9 to 0.99 g/cm3.
The method of claim 11, wherein the TiO2 particles in the nanocomposite film have an average longest dimension of no more than 25 nm, and/or
- wherein the TiO2 particles have an average sphericity of at least 0.91.
The method of claim 11, wherein the polyethylene in the nanocomposite film is foamed.
The method of claim 11, wherein the nanocomposite film comprises no more than 2 wt. % of the silver particles.
(canceled)
A method for making a nanocomposite film, the method comprising:
- dispersing and thereby mixing polyethylene, silver particles, and TiO2 particles in a solvent to form a dispersion;
- drying to form a dry mixture;
- and
- melt mixing the dry mixture to form the nanocomposite film;
- wherein the nanocomposite film comprises:
- an organic matrix comprising at least 75 wt. % of the polyethylene relative to a total weight of the organic matrix;
- the silver particles;
- and
- the TiO2 particles,
- wherein the silver particles and the TiO2 particles are distributed within and/or on an outer surface of the organic matrix,
- wherein the silver particles have a size of 1 to 1,000 nm, and
- wherein the TiO2 particles have a size of 1 to 50 nm.
18-20. (canceled)
Dependencies are inferred from the claim text.