WO2021255661A1 - Nanocomposite polymère en couches et son procédé de fabrication - Google Patents

Nanocomposite polymère en couches et son procédé de fabrication Download PDF

Info

Publication number
WO2021255661A1
WO2021255661A1 PCT/IB2021/055304 IB2021055304W WO2021255661A1 WO 2021255661 A1 WO2021255661 A1 WO 2021255661A1 IB 2021055304 W IB2021055304 W IB 2021055304W WO 2021255661 A1 WO2021255661 A1 WO 2021255661A1
Authority
WO
WIPO (PCT)
Prior art keywords
polymer nanocomposite
layered polymer
layered
graphene
polymer matrix
Prior art date
Application number
PCT/IB2021/055304
Other languages
English (en)
Inventor
Paul Hanson
Original Assignee
Paul Hanson
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Paul Hanson filed Critical Paul Hanson
Publication of WO2021255661A1 publication Critical patent/WO2021255661A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D129/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Coating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Coating compositions based on derivatives of such polymers
    • C09D129/14—Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/045—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/10—Inorganic particles
    • B32B2264/107—Ceramic
    • B32B2264/108—Carbon, e.g. graphite particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/20—Particles characterised by shape
    • B32B2264/201—Flat or platelet-shaped particles, e.g. flakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2264/00—Composition or properties of particles which form a particulate layer or are present as additives
    • B32B2264/30—Particles characterised by physical dimension
    • B32B2264/301—Average diameter smaller than 100 nm
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3009—Sulfides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C08K3/042—Graphene or derivatives, e.g. graphene oxides
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Definitions

  • the present disclosure relates generally to surface coatings, and more specifically, to layered polymer nanocomposites comprising a polymer matrix, graphene nanoplatelets dispersed therein and a third- party material having a non-zero band gap value. Moreover, the present disclosure is concerned with methods of manufacturing aforementioned layered polymer nanocomposite.
  • Routine sanitation practices comprise application or spray of multi-litres of sanitation solutions to a potential infected area.
  • routine sanitation works fail to disinfect frequently accessed everyday use articles, such as door handles, tables and the like.
  • high impact touch points for humans help drive the epidemic at an uncontrolled pace.
  • production and supply of sanitizing solutions is limited and is highly dependent on the jurisdictional regulations.
  • increasing demand of sanitizing solutions may eventually lead to an exponential increase in the price thereof.
  • the present disclosure seeks to provide a layered polymer nanocomposite.
  • the present disclosure also seeks to provide a method of manufacturing the aforementioned layered polymer nanocomposite.
  • the present disclosure seeks to provide a solution to the existing problem of stabilizing graphene with a polymer and developing and transferring nanocircuits within the layers of graphene-polymer nanocomposite.
  • the present disclosure further seeks to provide an easy to peel off protective surface coating layer for everyday use surfaces like handles and the like.
  • the layered polymer matrix enables efficient identification, disinfection and repeated access of surfaces infected with microorganisms, such as bacteria, viruses including COVID-19, and so on.
  • an embodiment of the present disclosure provides a layered polymer nanocomposite comprising:
  • the layered polymer nanocomposite comprises an assay substrate, wherein a change in the assay substrate is correlated with the presence of a microorganism.
  • An aim of the present disclosure is to provide a solution that overcomes at least partially the problems encountered in prior art, and to provide a novel, inexpensive and highly efficient surface coating layers that are antimicrobial, anti-abrasive, durable, sustainable, light-weight, thin, flexible, water repellent, transparent, extremely robust, reusable; moreover allows energy and information to be transferred.
  • the layered polymer nanocomposite namely tri-layer semi-permanent coating
  • stabilized graphene nanoplatelets improves the longevity, robustness and usability of the surfaces coated with the layered polymer nanocomposite.
  • the polymer matrix comprises vinylic, styrenic or acrylic polymer, and wherein the vinylic polymer is a polyvinyl butyral.
  • the third-party material is selected from a group comprising: molybdenum disulfide, carbon (diamond), silicon, silicon dioxide, silicon nitride, silicon carbide, gallium nitride, gallium phosphide, gallium arsenide, lead sulfide, copper oxide, magnesium oxide, zinc oxide, titanium oxide, aluminium nitride, aluminium gallium nitride, aluminium gallium oxide, cubic-boron nitride, germanium, piezoelectric ink.
  • the layered polymer nanocomposite is used in any of: semi- permanent coatings, anti-microbial coatings, anti-viral coatings, medical devices, anti-abrasive coatings, remolded products, surfaces, wherein the semi-permanent coating is removable.
  • an embodiment of the present disclosure provides a method of manufacturing a layered polymer nanocomposite, the layered polymer nanocomposite comprising:
  • the layered polymer nanocomposite comprises an assay substrate, wherein a change in the assay substrate is correlated with the presence of a microorganism
  • the method comprises: a) dispersing the graphene nanoplatelets in the polymer matrix to form a substrate layer having a first side and a second side; b) transferring a third-party material on the first side of the substrate layer to form a circuit-primed substrate layer having an open side; and c) adding a seal layer on the open side of the circuit- primed substrate layer to form the layered polymer nanocomposite.
  • Embodiments of the present disclosure substantially eliminate or at least partially address the aforementioned problems in the prior art, and provides a tri-layer polymer nanocomposite with improved mechanical performance (both toughness and flexibility) combined with superior anti- microbial, anti-viral and bacteriostatic properties, thermal and electrical conductivity, resistance to thermal degradation, optical, and biosensing properties.
  • FIG. 1 shows a schematic illustration of a layered polymer nanocomposite, in accordance with an embodiment of the present disclosure
  • FIG. 2 is an illustration of steps of a method of manufacturing a layered polymer nanocomposite, in accordance with an embodiment of the present disclosure.
  • an underlined number is employed to represent an item over which the underlined number is positioned or an item to which the underlined number is adjacent.
  • a non- underlined number relates to an item identified by a line linking the non-underlined number to the item.
  • the non-underlined number is used to identify a general item at which the arrow is pointing.
  • the present disclosure provides the aforementioned layered polymer nanocomposite with improved mechanical performance (both flexibility and toughness). Graphene is a good conductor of heat and electricity, therefore, the layered polymer nanocomposite allows energy and information to be transferred therein.
  • the disclosed layered polymer nanocomposite is highly efficient as a surface coating agent with a high sustainable product lifecycle combined with superior electrical conductivity and biosensing properties.
  • the layered polymer nanocomposite is used as an anti-abrasive coating, layers of which are held intact even at conditions of extreme mechanical stress.
  • the layered polymer nanocomposite is applied on surfaces as a semi-permanent coating and is easy to apply and easy to peel off, thus proving for a surface easy to remove and protection from being infected with COVID-19 virus (namely, coronavirus), other viruses, or bacteria.
  • said coating is flexible and can be applied on articles with uneven shapes and surfaces.
  • the layered polymer nanocomposite provides an environment-friendly alternative to conventional plastics, and may be exploited in niche applications employing recyclable or biodegradable materials.
  • the layered polymer nanocomposite 100 comprises a polymer matrix 102; graphene nanoplatelets 104 dispersed in the polymer matrix, wherein the graphene nanoplatelets 104 are stabilized with the polymer matrix 102; and a third-party material 106 having a non-zero band gap value, wherein the layered polymer nanocomposite 100 comprises an assay substrate, wherein a change in the assay substrate is correlated with the presence of a microorganism.
  • the term " layered polymer nanocomposite" as used herein refers to an artificially-made material having coating or covering properties.
  • the layered polymer nanocomposite 100 can be employed for a variety of applications such as the decorative, functional or both.
  • the layered polymer nanocomposite 100 is applied as a coating on (or covering over) a surface of an article. More specifically, the layered polymer nanocomposite 100 may be an all-over coating (i.e. completely covering the article) or a partial coating (i.e. partly covering the article).
  • the layered polymer nanocomposite 100 may be coated by various processes known in the art.
  • the layered polymer nanocomposite 100 comprises a polymer matrix 102.
  • polymer matrix refers to a synthetic, polymeric, viscous compound (composition or substance) that provides the continuous (bulk) phase of dispersion.
  • the polymer matrix 102 comprises vinylic, styrenic or acrylic polymer, and wherein the vinylic polymer is a polyvinyl butyral.
  • the polymer matrix 102 comprises chemicals having structural elements based respectively on a vinyl moiety, styrene or an acrylic moiety.
  • the styrenic monomer is styrene
  • the acrylic monomer is methyl acrylate, methyl methacrylate, ethylene glycol, ethylene oxide, and so on
  • the vinylic monomer is ethylene, propylene or substituted ethylene or propylene.
  • the polymer matrix 102 includes, but is not limited to, polyacrylates, polymethylmethacrylates, polylactic acid (PLA) polymers, polyhydroxyalkanoate (PHA) polymers (e.g., polyhydroxybutyrate (PHB)), polycaprolactone (PCL) polymers, polyglycolic acid polymers, acrylonitrile-butadiene-styrene polymers (ABS), vinyl polymers (such as polyvinyl alcohol (PVA, polyvinyl butyral (PVB), polyvinyl chloride (PVC), polyethylene, polypropylene, and the like), polyurethane polymers, polyester polymers, and polyamide polymers.
  • the polymer matrix 102 is polyvinyl butyral (PVB).
  • PVB polyvinyl butyral
  • PVB polyvinyl butyral
  • PVB polyvinyl butyral
  • PVB provides toughness, flexibility, strong binding, optical clarity and enhanced adhesion to various surfaces.
  • the layered polymer nanocomposite 100 comprises the graphene nanoplatelets 104 dispersed in the polymer matrix 102.
  • graphene refers to a
  • graphene may be synthesised by one of the synthesis techniques: mechanical cleaving, chemical exfoliation, chemical synthesis or chemical vapour deposition.
  • mechanical cleaving technique graphite or graphene oxide is mechanically exfoliated to obtain graphene sheets.
  • the properties and structure of graphene may depend on the technique employed for synthesis.
  • the chemical vapour deposition technique may be employed to obtain graphene sheets with the least amount of impurities.
  • the graphene nanoplatelets 104 are short stacks of polygonal platelet-shaped graphene sheets in a planar (2D) structure. Due to its unique size and morphology (honeycomb pattern), graphene is the world's thinnest, strongest and stiffest material. Furthermore, graphene nanoplatelets 104 possess enhanced barrier properties, excellent mechanical properties such as toughness, strength, and surface hardness, antimicrobial and antiviral properties, and excellent conductivity (both electrical and thermal). Optionally, each of the graphene nanoplatelets 104 has a thickness in a range of 1-10 nanometres and a diameter in a range of 0.5-50 micrometres.
  • the thickness may be from 1, 2, 3, 4, 5, 6, 7, 8 or 9 nanometres (nm) up to 2, 3, 4, 5, 6, 7, 8, 9 or 10 nm and the diameter may be from 0.5, 0.6, 0.7, 0.8, 0.9, 1, 5, 10, 15, 20, 25, 30, 35, 40 or 45 micrometres (pm) up to 0.6, 0.7, 0.8, 0.9, 1, 5, 10, 15, 20, 25, 30, 35, 40, 45 or 50 pm.
  • the smaller graphene nanoplatelets 104 move or turn more easily (laterally) in a dispersion media, such as the polymer matrix 102 (ranging from an average viscosity to a slightly higher viscosity). Consequently, such smaller graphene nanoplatelets 104 form continuous (or approximately continuous) sheet in the polymer matrix 102.
  • the layered polymer nanocomposite 100 has a graphene nanoplatelets 104 content in a range between 0.1% and 10% by weight.
  • the graphene nanoplatelets 104 content in the layered polymer nanocomposite 100 is typically from 0.1, 0.5, 1 or 5% up to 0.5, 1, 5 or 10% by weight.
  • the presence of the graphene nanoplatelets 104 in the polymer matrix 102 helps the layered polymer nanocomposite 100 achieve excellent mechanical strength as well as significantly improved thermal and electrical conductivity.
  • the graphene nanoplatelets 104 are dispersed in the polymer matrix 102 using the various processes of dispersion known in the art. Specifically, the process of dispersion results in dispersing graphene nanoplatelets 104 in a stabilizing polymer matrix 102, such as PVB, to produce a polymer-stabilized graphene nanoplatelet dispersion.
  • a stabilizing polymer matrix 102 such as PVB
  • stabilized refers to a higher concentration of graphene nanoplatelets 104 dispersed in the polymer matrix 102.
  • the polymer matrix 102 preferably in a liquid form, is spread over a platform, for example, a glass substrate (such as polytetrafluoroethylene (PTFE) film on top of a glass, silicone- coated glass substrate, a PTFE glass mesh, a PEEK-coated glass substrate, and the like).
  • a glass substrate such as polytetrafluoroethylene (PTFE) film on top of a glass, silicone- coated glass substrate, a PTFE glass mesh, a PEEK-coated glass substrate, and the like.
  • the graphene nanoplatelets 104 are dispersed by continuous stirring in said polymer matrix 102.
  • the dispersed graphene nanoplatelets 104 interact with the polymer matrix 102 for a predefined period of time (for example, ranging from 5 minutes to a few hours) at predefined temperature (for example room temperature).
  • the dispersion of graphene nanoplatelets 104 in the polymer matrix 102 produces a uniform and fine distribution of graphene nanoplatelets 104 inside and on the surface of the polymer matrix 102. Consequently, the resultant layered polymer nanocomposite 100 achieves enhanced stability, mechanical strength and optical, thermal and electrical properties attributed to the individual components thereof.
  • the resultant layered polymer nanocomposite 100 is then filtered and washed.
  • a suitable dispersion media is incorporated in the polymer matrix 102 to facilitate dispersion of the graphene nanoplatelets 104 in the polymer matrix 102.
  • the suitable dispersion media may be a liquid at room or elevated temperatures (for example polyethylene glycol ether, castor oil, vegetable wax and water) or a solid (for polymers, glasses, metals, metal oxides and so forth.
  • the graphene nanoplatelets 104 are suitably treated, for example with an activating agent, to facilitate dispersion of the graphene nanoplatelets 104 in the polymer matrix 102.
  • Suitable activating agents may be selected from a group comprising alkyl amine, aromatic amines, functionalized amines, alkyl alcohols or other nucleophilic entities, thionyl chloride, Benzotriazol-l-yloxy- tris[dimethylamino]phosphonium hexafluorophosphate (BOP), 3- diethyoxyphosphoryloxy-l,2,3-benzotriazin-4(3FI)-one (DEPBT), N,N'- Dicyclohexylcarbodiimide, N,N'-Diisopropylcarbodiimide, 4-(4,6- dimethoxy-l,3,5-triazin-2-yl)-4-methylmorpholinium chloride
  • DTMM l-[bis(dimethylamino)methylene]-lH-l,2,3-triazolo[4,5- b]pyridinium - 3-oxide
  • HATU 2-(lH-benzotriazol-l-yl)-l, 1,3,3- tetramethyluronium hexafluorophosphate
  • HBTU 2-(lH-benzotriazol-l-yl)-l, 1,3,3- tetramethyluronium hexafluorophosphate
  • HCTU lH-(6- chlorobenzotriazol-l-yl)-l,l,3,3- tetramethyluronium hexafluorophosphate
  • HCTU l-Hydroxy-7- azabenzotriazole
  • Hydroxybenzotriazole (7-azabenzotriazol-l- yloxy)tripyrrolidinophosphonium hexafluorophosphate (P
  • the layered polymer nanocomposite 100 comprises the third-party material 106 having a non-zero band gap value.
  • band gap refers to energy difference between different energy states of a solid material (for example conductor, semiconductor and insulator). The different energy states range between the top of the valence band and the bottom of the conduction band in insulators and semiconductors.
  • the band gap is the energy required to promote an atom-bound valence electron to become a freely-movable conduction electron that serves as a charge carrier to conduct electric current. Therefore, electrical conductivity of a solid is based on its band gap value.
  • a solid material i.e.
  • insulators, semiconductors and conductors may possess larger band gaps, smaller band gaps and no or very small band gaps due to overlapping bands, respectively.
  • the semiconductors behave as an insulator at absolute zero but allow thermal excitation of electrons at temperatures below the melting point thereof.
  • the third-party material 106 is a semiconductor possessing a non-zero small band gap value.
  • the third-party material 106 is selected from a group comprising: molybdenum disulfide, carbon (diamond), silicon, silicon dioxide, silicon nitride, silicon carbide, gallium nitride, gallium phosphide, gallium arsenide, lead sulfide, copper oxide, magnesium oxide, zinc oxide, titanium oxide, aluminium nitride, aluminium gallium nitride, aluminium gallium oxide, cubic-boron nitride, germanium, piezoelectric ink.
  • the third-party material 106 is molybdenum disulphide (MoS 2 ).
  • the crystal structure of M0S2 is a two-dimensional sheet comprising hexagonal plane of sulfur (S) atoms on either side of hexagonal plane of Molybdenum (Mo) atoms.
  • Triple layers of two-dimensional M0S2 sheet may be stacked on top of each other with strong covalent bonds between the Mo and S atoms but weak van der Waals forces between the layers.
  • individual layers of M0S2 results in formation of direct band gaps with an increased energy of approximately 1.8 to 1.9 electron volt (eV).
  • MOS 2 Due to its structure and direct band gap, MOS 2 possesses excellent mechanical strength, electrical conductivity and can emit light and therefore is employed in several applications including, but not limited to, photodetectors, optical sensors, field-effect transistors (FET), biosensors and potential device applications (such as microelectronics and photoelectrochemical devices).
  • FET field-effect transistors
  • MoS 2 has a layered structure same or similar to graphene.
  • graphene-like material is selected from a group comprising functionalized graphene, doped graphene, graphene oxide, partially reduced graphene oxide, graphite flakes, molybdenum diselenide (MoSe 2 ), molybdenum ditelluride (MoTe 2 ), tungsten disulfide (WS 2 ), tungsten diselenide (WSe2), hexagonal boron nitride (h-BN), gallium sulfide (GaS), gallium selenide (GaSe), lanthanum cuprate (La 2 Cu0 4 ), bismuth tritelluride (B ⁇ Te ⁇ ), bismuth triselenide (B ⁇ Se ⁇ ), antimony triselenide (Sb ⁇ e ⁇ ), zinc oxide (ZnO), niobium disulfide (NbS 2 ), niobium diselenide (NbSe 2 ), tantalum disulfide (TaS 2 ), vanadium
  • InS indium
  • ZrS 2 zirconium disulfide
  • CdSe cadmium selenide
  • the third-party material 106 is a piezoelectric ink or a carbon nanotubes.
  • the third-party material 106 is a nano-hybrid.
  • the nano-hybrid is a blend of poly (2,2 , -disulfonyl-4,4 , -benzidine terephthalamide) (PBDT) and polyanaline (PANI) nanostructure (nanofibres or nanotubes), namely, PBDT/PANI blend.
  • PBDT/PANI blend is suitable for use as a filler in composite, such as the layered polymer nanocomposite 100.
  • PBDT is a densely charged aromatic polyamide having a double helical structure (such as that of DNA).
  • PBDT double helical structure
  • PBDT could be mixed with liquid ions to create an electrolyte (such as a nematic liquid crystal (LC) phase) or a hydrogel that has very good conductivity, excellent stretchability yet mechanically stiff.
  • electrolyte such as a nematic liquid crystal (LC) phase
  • hydrogel that has very good conductivity, excellent stretchability yet mechanically stiff.
  • the enhanced mechanical stiffness of PBDT enables using only a very small amount of PBDT (for example 1-2%) as compared to conventional fillers (about 10%) in the composites.
  • PANI nanostructure is a conducting polymer having a high band gap. Notably, in different oxidation states, PANI nanostructures exhibit colour change, thus making it suitable for use in sensors and electrochromic devices.
  • PANI nanostructures are prepared using methods known in the art. PANI nanostructure is typically prepared by oxidative chemical or electrochemical oxidations of aniline in acidic aqueous media. Moreover, use of organic solvents or acids induce magnetic properties in PANI nanostructures. Optionally, during preparation of the PANI nanostructures, magnetic stirring could be performed. Beneficially, use of PANI nanostructure (polymerized from inexpensive aniline) reduces the overall cost associated with the production of the layered polymer nanocomposite 100.
  • the PBDT/PANI blend enables perpetual motion within a middle layer, occupied by third-party material 106, of the layered polymer nanocomposite 100.
  • the magnetic property of the PANI nanostructures results unpaired electrons occurring in PBDT/PANI blend to produce movement of a mass, such as the graphene nanoplatelets 104 dispersed in the polymer matrix 102 in a unidirectional manner.
  • the PBDT/PANI blend enables the layered polymer nanocomposite 100 to generate its own energy and transmit and receive energy (in the form of light and sound, for example).
  • the third-party material 106 is a material having a coil structure (having black hole/white hole pair construct).
  • the coil structure enables production of a large supply of energy.
  • matter and antimatter from the opposite ends of space are accelerated into a center (namely, a point singularity) of the coil structure where they collide and annihilated into energy.
  • a tri-layer semi-permanent coating is manufactured using the layered polymer nanocomposite 100 or obtained by performing the method of manufacturing the layered polymer nanocomposite 100 (as described in detail hereinbelow).
  • the tri-layer semi permanent coating is manufactured from the layered polymer nanocomposite 100 using an electrically-assisted three-dimensional (3D) printing process.
  • the printing process takes place in a tank, such as a glass tank.
  • the polymer matrix 102 in a fluid form is spread over the glass tank.
  • the graphene nanoplatelets 104 are dispersed in the polymer matrix 102.
  • the polymer-stabilized graphene nanoplatelet dispersion results in a substrate layer 108.
  • the substrate layer 108 comprises a first side 108A and a second side 108B. Similar, to the substrate layer 108, a seal layer 110, comprising a polymer-stabilized graphene nanoplatelet dispersion, is produced.
  • the seal layer 110 also comprises a first side 110A and a second side H OB.
  • the graphene nanoplatelets 104 dispersed in the polymer matrix 102 may be subjected to an electric current, for example, a direct-current voltage of 1300 V, to generate the electric field of 433 V/cm to polarically align the graphene nanoplatelets 104 in the polymer matrix 102.
  • the graphene nanoplatelets 104 are vertically aligned, like pyramids stacking up, thus inducing hydrophobicity in the substrate layer 108 and the seal layer 110.
  • the graphene nanoplatelets 104 polarically aligned in the polymer matrix 102 is photocured by exposure to light, such as ultraviolet light.
  • the photocured graphene nanoplatelets 104 is processed to remove non-conductive binders and welded together to enhance conductivity of the obtained tri-layer semi-permanent coating.
  • the post-printing process involves, heat, chemical, electrical or rapid- pulse laser treatment that processes graphene nanoplatelets 104 without damaging the printing surface, such as a paper, or glass substrate.
  • the third-party material 106 having a non-zero band gap value is inserted between the substrate layer 108 and the seal layer 110.
  • the third-party material 106 is transferred to the substrate layer 108 to form a circuit-primed substrate layer, and the seal layer 110 is added (or attached) on to the circuit-primed substrate layer to for the tri-layer semi-permanent coating.
  • the third-party material 106 is etched on a graphene nanoplatelet directly before insertion between the substrate layer 108 and the seal layer 110.
  • the third- party material 106 is printed on a paper using techniques known in the art (such as laser techniques and nano processing techniques) and subsequently transferred to graphene nanoplatelet via heat process before insertion as discussed above. It will be appreciated that the excess paper may be removed and the circuit primed.
  • the tri-layer semi-permanent coating is manufactured from the layered polymer nanocomposite 100 using a graphene printing technology.
  • the graphene printing technology uses a customized inkjet printer to print with graphene nanoplatelet 104 flakes, instead of ink, and laid down as an electronic circuit on a polymer matrix 102.
  • the inkjet printer is a low-cost technology for producing printed graphene that is post-printing processed with a laser to make functional materials therewith.
  • use of laser induces hydrophobicity in the inkjet-printed graphene by aligning the graphene nanoplatelets 104 in a vertical orientation (as discussed above).
  • other post-printing processing may be performed on the printed graphene as discussed hereinabove.
  • various high image quality patterns may be printed on diverse flexible substrates, including paper, poly(ethylene terephthalate) (PET) and polyimide (PI), with a simple and low-cost inkjet printing technique.
  • the graphene-based patterns printed on plastic substrates demonstrate a high electrical conductivity after thermal reduction, and more importantly, retention of the same conductivity over severe bending cycles. Accordingly, flexible electric circuits and a hydrogen peroxide chemical sensor may be fabricated demonstrating that graphene materials can be easily produced on a large scale and possess outstanding electronic properties.
  • simple inkjet printing techniques have great potential for the convenient fabrication of flexible and low-cost graphene-based electronic devices.
  • a Salt Impregnated Inkjet Maskless Lithography (SIIML) is used to print graphene.
  • SIIML uses an inkjet printer to create inexpensive graphene circuits with high electrical conductivity.
  • salt is added to the ink, which is later washed away to leave micro-sized divots or craters in the surface.
  • the textured printed graphene surface is able to bind with pesticide-sensing enzymes to increase sensitivity during pesticide biosensing.
  • the graphene pesticide test strip detects selected compounds through electrochemical sensing. These sensors can detect contaminants as small as 0.6 nanometers (nM) in length.
  • inkjet-printed graphene can be adapted for field use to detect a wide range of samples, including pathogens in food and fertilizer in soil and water.
  • the inkjet- printing technology is so inexpensive, that the sensors could be used across an entire farm field to monitor pesticides and fertilizers so that farmers could limit their use and apply only what is truly needed.
  • the sensors, based on inject printed graphene can be designed to detect pathogens in food processing facilities to prevent food contamination, monitor cattle diseases, for example, before physical symptoms are present, and for a variety of in-field sensing applications that require low-cost but highly sensitive biosensors.
  • the layered polymer nanocomposite 100 is used in any of: semi-permanent coatings, anti-microbial coatings, anti-viral coatings, medical devices, anti-abrasive coatings, remolded products, surfaces, wherein the semi-permanent coating is removable.
  • the layered polymer nanocomposite 100 is a tri-layer semi-permanent coating.
  • the term "semi-permanent coating” refers to a non-permanent coating that is easy and fats to apply and easy to remove, such as by peeling off.
  • the layered polymer nanocomposite 100 coating is sensitive to microbes and viruses, such as COVID-19 or other viruses, and is suitable for detecting and analysing said microbes and viruses.
  • the layered polymer nanocomposite 100 coatings are suitable for detecting contaminants of size in a range between 0.2- 100 nanometre (nm).
  • the layered polymer nanocomposite 100 is an anti- biofouling material.
  • the layered polymer nanocomposite 100 prevents growing of biological materials, such as microorganism, on the surfaces of devices (for example chemical or biological sensors) that would inhibit the optimal performance of such devices.
  • the layered polymer nanocomposite 100 can also have applications in flexible electronics, washable sensors in textiles, microfluidic technologies, drag reduction, de-icing, electrochemical sensors and other technologies employing graphene nanoplatelets 104 and electrical stimulation.
  • the self cleaning wearable/washable electronics are resistant to stains, or ice and biofilm formation.
  • the structure of graphene and MoS 2 enables the application of layered polymer nanocomposite 100 as anti-abrasive coatings for use in devices or surfaces subjected to extreme mechanical stress.
  • the enhanced mechanical strength makes the use of the layered polymer nanocomposite 100 for manufacturing medical devices such as swabs, strips, and so on, food- grade remolded products, such as packaging material, wrapping sheets, and so on, as well as surfaces for use in public places.
  • the graphene nanoplatelets are non-toxic and bacteriostatic, thus find application in the production of various medical devices to ensure better prevention properties for the spread of the infection from the microbe or the virus.
  • the layered polymer nanocomposite 100 comprises an assay substrate, wherein a change in the assay substrate is correlated with the presence of a microorganism.
  • the MoS 2 possesses electrochemical platform for detection and analysis of biological material, such as microorganisms, viruses, nucleic acids, proteins, antibiotics, neurotransmitters and the like, as well as hazardous chemicals (such as metal ions, pesticides or organophosphates).
  • Organophosphates are certain classes of insecticides used on crops throughout the world to kill insects.
  • the layered polymer nanocomposite 100 is configured to detect organophosphates at levels 40 times smaller than the U.S. Environmental Protection Agency (EPA) recommendations. Additionally, beneficially, quantifying insecticide runoff and drift enables characterizing its long-term effects and identifying ways to minimize said effects.
  • the assay substrate such as a bioluminogenic substrate or a dye
  • the assay substrate may be incorporated in the layered polymer nanocomposite 100 to enable detection of the biological material.
  • suitable assay substrates may be incorporated for disease identification.
  • the MOS 2 and assay substrate provide a larger surface area and high conductivity for receiving electrons from a microbe or a virus, and thereby reporting by means of chemical (such as generation of reactive oxygen species (ROS)) or fluorescent (bioluminescent) signals the presence of infection on the surface coated with the layered polymer nanocomposite 100.
  • ROS reactive oxygen species
  • a suitable assay substrate when a suitable assay substrate combines with a molecule (such as ATP) secreted or given away by a microbe or a virus, the assay substrate and the molecule undergo a chemical reaction often catalysed by a catalyst (such as an enzyme) associated with the assay substrate to generate a chemical energy.
  • a catalyst such as an enzyme
  • the chemical energy excites specific molecules associated with the assay substrate or the microbe or a virus.
  • the excitation of specific molecules is manifested as photon emission, light production or colour change and recorded by the sensor.
  • the layered polymer nanocomposite 100 further comprises a plasticizer, a stabilizer, a filler, an impact modifier.
  • the plasticizer imparts flexibility, malleability, pliability, durability, and plasticity to the layered polymer nanocomposite 100.
  • Suitable plasticizers include, but are not limited to, tributyl citrate, acetyl tributyl citrate, diethyl phthalate, glycerol triacetate, glycerol tripropionate, triethyl citrate, acetyl triethyl citrate, phosphate esters (for example, triphenyl phosphate), long-chain fatty acid esters, aromatic sulfonamides, hydrocarbon processing oil, propylene glycol, epoxy- functionalized propylene glycol, polyethylene glycol, polypropylene glycol, epoxidized soybean oil, acetylated coconut oil, linseed oil, and epoxidized linseed oil.
  • the filler alters any of: mechanical, physical and/or chemical properties of the layered polymer nanocomposite 100.
  • filler include, but are not limited to, magnesium oxide, hydrous magnesium silicate, aluminium oxides, silicon oxides, titanium oxides, calcium carbonate, clay, chalk, boron nitride, limestone, diatomaceous earth, mica, glass quartz, ceramic and/or glass microbeads, metal or metal oxide fibres and particles, Magnetite®, Magnetic Iron(III) oxide, carbon nanotubes and fibres.
  • the stabilizer may be a thermal stabilizer that improves resistance to heat, an oxidative stabilizer that improves resistance to oxidative damages due to oxidation by atmospheric air, corrosive or other reactive chemicals, or a light stabilizer that improves resistance to damage from exposure to natural or artificial light.
  • the stabilizer examples include, but are not limited to, hydrogen chloride scavenger (such as epoxidized soybean oil), alkoxy substituted hindered amine light stabilizers (HALS) (for example, N-O-R HALS), N -(1,3- dimethylbutyl)-N'-phenyl-p-phenylenediamine (6PPP), N- isopropyl- N-phenyl-phenylenediamine (IPPD), 6-ethoxy-2, 2, 4-trimethyl- I, 2- dihydroquinoline (ETMQ), ethylene diurea (EDU), paraffin wax, ultraviolet (UV) light stabilizers and hindered amine light stabilizers (HALS or HAS).
  • HALS alkoxy substituted hindered amine light stabilizers
  • N-O-R HALS N -(1,3- dimethylbutyl)-N'-phenyl-p-phenylenediamine
  • IPPD N- isopropyl- N-phenyl-
  • the impact modifier increases resistance of the layered polymer nanocomposite 100 against breaking, under impact conditions.
  • impact modifier include, but are not limited to, olefinic polymers or copolymers (for example, ethylene, propylene, or a combination thereof with various (meth)acrylate monomers and/or various maleic-based monomers), alkyl(methyl)acrylates (for example, butyl acrylate, hexyl acrylate, propyl acrylate, or a combination thereof), alkyl(meth)acrylate monomer with acrylic acid (for example, maleic anhydride, glycidyl methacrylate, or a combination thereof), monomers providing additional moieties (for example, carboxylic acid, anhydride, epoxy), block copolymers (for example, A-B diblock copolymers, A-B-A triblock copolymers, and rubber block, B, derived from isoprene, butadiene or isoprene and butadiene).
  • the disclosed layered polymer nanocomposite comprises nano-electronics embedded into a flexible coating, for example sensors for detecting bacterial and/or viral strains or detecting a chemical, electrical, mechanical, or photoelectric change.
  • the layered polymer nanocomposite may find application in electronic devices, such as organic light emitting diodes (OLED), liquid crystal display (LCD), color-changing clothes, and so on.
  • OLEDs traditional OLEDs, light emitting polymers (LEPs) or polymer LEDs (PLEDs)
  • LEPs light emitting polymers
  • PLEDs polymer LEDs
  • a simple OLED is made up of six different layers. On the top and bottom there are layers of protective glass or plastic referred to as the seal layer and the substrate layer, respectively.
  • OLED comprises a negative terminal (namely, cathode) and a positive terminal (namely, anode).
  • a negative terminal namely, cathode
  • anode a positive terminal
  • a positive terminal namely, anode
  • the emissive layer where the light is produced, which is next to the cathode
  • the conductive layer node
  • electricity starts to flow therebetween when the anode loses electrons (or gains holes) and the cathode receives electrons from the power source.
  • OLED produces continuous light for as long as the current keeps flowing.
  • OLED may be configured to produce colored light by adding a colored filter just beneath the seal or substrate layers. Notably, arranging thousands of red, green, and blue OLEDs next to one another (or on top of one another) and switching them on and off independently, produces complex, hi- resolution colored pictures similar to the pixels in a conventional LCD screen. In OLEDs, layers of polymer turn electricity into light and vice versa.
  • the teachings of the present disclosure may be implemented in fabrication of graphene-based devices, such as OLEDs, LEDs, touchscreens and solar cells, as an alternative to the conventional indium tin oxide (ITO) devices.
  • ITO indium tin oxide
  • TCs transparent conductors
  • Graphene exhibits high optical transparency and electronic mobility, making it a potential material for opto-electronic applications such as touch screens, LEDs, and solar cells.
  • graphene-based devices deliver superior performance compared to advanced indium tin oxide (ITO) devices.
  • the electrodes attached to the OLEDs have an area of around 2 cm by 1 cm (1/2 inch by 1/4 inch), and are created using a process of chemical vapor deposition (CVD), where methane and hydrogen are pumped into a vacuum chamber where a copper plate has been heated to 800° C (1,472° F). A chemical reaction occurs between the two gases and, as the methane dissolves into the copper, it forms graphene atoms on the surface.
  • CVD chemical vapor deposition
  • graphene-based FET work better than silicon transistors that are used in today's computers, especially in terms of microprocessors that, built using silicon transistors, have processing speeds mostly in a range of 3 to 4 gigahertz, thereby limiting the rate of signals and power transfers, mostly due to silicon's resistance.
  • a logic gate series provides that the graphene-based FET uses less power but could work 1,000 times faster than ones with silicon.
  • graphene used in everything from conductors, through to supercapacitors, solar cells and a raft of other electronic devices, displays made from this material are a logical choice for improving the longevity, robustness, and usability of photovoltaic cells, wearable, flexible textiles and medical devices.
  • This research may lead to developments in these areas in the very near future.
  • graphene has higher charge carrier mobility, but typically lower carrier concentrations. Therefore, the overall performance of graphene as an electrode needs to be improved, such as by doping, to increase the number of available charge carriers.
  • care must be taken to avoid damaging the high optical transparency of graphene during the doping process, as this is an important quality for a transparent electrode.
  • the layered polymer nanocomposite comprises a polymer matrix; graphene nanoplatelets dispersed in the polymer matrix, wherein the graphene nanoplatelets are stabilized with the polymer matrix; and a third-party material having non- zero band gap value, wherein the layered polymer nanocomposite comprises an assay substrate, wherein a change in the assay substrate is correlated with the presence of a microorganism.
  • the method comprises, at step 202, dispersing the graphene nanoplatelets in the polymer matrix to form a substrate layer having a first side and a second side; at step 204, transferring a third- party material on the first side of the substrate layer to form a circuit- primed substrate layer having an open side; and at step 206, adding a seal layer on the open side of the circuit-primed substrate layer to form the layered polymer nanocomposite.
  • steps 202, 204 and 206 are only illustrative and other alternatives can also be provided where one or more steps are added, one or more steps are removed, or one or more steps are provided in a different sequence without departing from the scope of the claims herein.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Plant Pathology (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Ceramic Engineering (AREA)
  • Carbon And Carbon Compounds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un nanocomposite polymère en couches (100). Le nanocomposite polymère en couches (100) comprend une matrice polymère (102) ; des nanoplaquettes de graphène (104) dispersées dans la matrice polymère (102), les nanoplaquettes de graphène (104) étant stabilisées avec la matrice polymère (102) ; et un matériau tiers (106) ayant une valeur d'écart de bande non nulle, le nanocomposite polymère en couches (100) comprenant un substrat de dosage, une modification dans le substrat de dosage étant corrélée à la présence d'un micro-organisme. L'invention divulgue en outre un procédé de fabrication du nanocomposite polymère en couches (100) susmentionné. Le procédé consiste à disperser les nanoplaquettes de graphène (104) dans la matrice polymère (102) pour former une couche de substrat comportant un premier côté et un second côté ; à transférer un matériau tiers (106) sur le premier côté de la couche de substrat pour former une couche de substrat à amorce de circuit comportant un côté ouvert ; et à ajouter une couche d'étanchéité sur le côté ouvert de la couche de substrat à amorce de circuit pour former le nanocomposite polymère en couches (100).
PCT/IB2021/055304 2020-06-16 2021-06-16 Nanocomposite polymère en couches et son procédé de fabrication WO2021255661A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2009110.4A GB2596079B (en) 2020-06-16 2020-06-16 Layered polymer nanocomposite and method of manufacture thereof
GB2009110.4 2020-06-16

Publications (1)

Publication Number Publication Date
WO2021255661A1 true WO2021255661A1 (fr) 2021-12-23

Family

ID=71835643

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/055304 WO2021255661A1 (fr) 2020-06-16 2021-06-16 Nanocomposite polymère en couches et son procédé de fabrication

Country Status (2)

Country Link
GB (1) GB2596079B (fr)
WO (1) WO2021255661A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115558327A (zh) * 2022-10-08 2023-01-03 李贞玉 一种石墨烯散热涂料及其制备方法
US20230093768A1 (en) * 2021-03-11 2023-03-23 Sergio Fernando Grijalva Varillas Packaging for fruit and vegetables with antipathogen barrier and production method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220194590A1 (en) * 2020-12-18 2022-06-23 B/E Aerospace, Inc. Copper plated touch surfaces

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012028748A1 (fr) * 2010-09-03 2012-03-08 The Provost, Fellows And Scholars Of The College Of The Holy And Undivided Trinity Of Queen Elizabeth, Near Dublin Capteur nano-carbone et procédé de fabrication d'un capteur
US20160276056A1 (en) * 2013-06-28 2016-09-22 Graphene 3D Lab Inc. Dispersions for nanoplatelets of graphene-like materials and methods for preparing and using same
US20170241995A1 (en) * 2014-05-09 2017-08-24 Meso Scale Technologies, Llc. Graphene-modified electrodes
WO2019070814A1 (fr) * 2017-10-03 2019-04-11 University Of South Florida Supercondensateur solide à haute capacité spécifique et procédé de fabrication
US20190322876A1 (en) * 2018-04-20 2019-10-24 Redjak, L.L.C. Methods and coatings for protecting surfaces from bio-fouling species

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105722375B (zh) * 2016-01-29 2018-03-06 白德旭 一种石墨烯散热装置及其制备方法
CN107541096A (zh) * 2016-06-28 2018-01-05 中国科学院成都有机化学有限公司 一种石墨烯白炭黑复合粉体及其制备技术
US11434381B2 (en) * 2017-03-06 2022-09-06 Bic-Violex Sa Coating
CN110054955A (zh) * 2018-01-19 2019-07-26 天津天涂豪邦涂料有限公司 一种有效净化空气的乳胶漆及其制备方法
CN111136895B (zh) * 2019-12-31 2021-12-24 佛山市顺德区耀森智能科技有限公司 一种涂抹涂料用防溅涂料桶材料的制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012028748A1 (fr) * 2010-09-03 2012-03-08 The Provost, Fellows And Scholars Of The College Of The Holy And Undivided Trinity Of Queen Elizabeth, Near Dublin Capteur nano-carbone et procédé de fabrication d'un capteur
US20160276056A1 (en) * 2013-06-28 2016-09-22 Graphene 3D Lab Inc. Dispersions for nanoplatelets of graphene-like materials and methods for preparing and using same
US20170241995A1 (en) * 2014-05-09 2017-08-24 Meso Scale Technologies, Llc. Graphene-modified electrodes
WO2019070814A1 (fr) * 2017-10-03 2019-04-11 University Of South Florida Supercondensateur solide à haute capacité spécifique et procédé de fabrication
US20190322876A1 (en) * 2018-04-20 2019-10-24 Redjak, L.L.C. Methods and coatings for protecting surfaces from bio-fouling species

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230093768A1 (en) * 2021-03-11 2023-03-23 Sergio Fernando Grijalva Varillas Packaging for fruit and vegetables with antipathogen barrier and production method
CN115558327A (zh) * 2022-10-08 2023-01-03 李贞玉 一种石墨烯散热涂料及其制备方法
CN115558327B (zh) * 2022-10-08 2024-02-20 德瑞宝(中国)复合材料有限公司 一种石墨烯散热涂料及其制备方法

Also Published As

Publication number Publication date
GB202009110D0 (en) 2020-07-29
GB2596079A (en) 2021-12-22
GB2596079B (en) 2022-10-26

Similar Documents

Publication Publication Date Title
WO2021255661A1 (fr) Nanocomposite polymère en couches et son procédé de fabrication
Bruzaud et al. The design of superhydrophobic stainless steel surfaces by controlling nanostructures: A key parameter to reduce the implantation of pathogenic bacteria
Wang et al. Fabrication and characterization of OLEDs using PEDOT: PSS and MWCNT nanocomposites
Ferrer-Anglada et al. Synthesis and characterization of carbon nanotube-conducting polymer thin films
Wang et al. Flexible organic light-emitting diodes with a polymeric nanocomposite anode
Jang et al. Flexible, transparent single-walled carbon nanotube transistors with graphene electrodes
Li et al. Electrical properties of soluble carbon nanotube/polymer composite films
Cui et al. Narrow band gap conjugated polyelectrolytes
Kiani et al. Effect of graphene oxide nanosheets on visible light-assisted antibacterial activity of vertically-aligned copper oxide nanowire arrays
Strange et al. Biodegradable polymer solar cells
Kim et al. Surface coated fluorescent carbon nanoparticles/TiO2 as visible-light sensitive photocatalytic complexes for antifouling activity
Sloma et al. Electroluminescent structures printed on paper and textile elastic substrates
KR101911745B1 (ko) 그래핀 적층체 및 그의 제조방법
Zhang et al. Semiquantitative performance and mechanism evaluation of carbon nanomaterials as cathode coatings for microbial fouling reduction
Goodwin Jr et al. Interactions of microorganisms with polymer nanocomposite surfaces containing oxidized carbon nanotubes
Zhou et al. Hierarchically patterned self-cleaning polymer composites for daytime radiative cooling
Huang et al. Polymer nanocomposite coatings
Lee et al. Highly conductive, transparent and metal-free electrodes with a PEDOT: PSS/SWNT bilayer for high-performance organic thin film transistors
Scalbi et al. Environmental assessment of new technologies: production of a quantum dots-light emitting diode
Yousefi et al. Fabrication of flexible ITO-free OLED using vapor-treated PEDOT: PSS thin film as anode
Sebastian et al. Recent advances in the applications of substituted polyanilines and their blends and composites
Arami et al. Polypyrrole/multiwall carbon nanotube nanocomposites electropolymerized on copper substrate
Byun et al. Graphene–polymer hybrid nanostructure-based bioenergy storage device for real-time control of biological motor activity
Kausar Poly (methyl methacrylate)/Fullerene nanocomposite—Factors and applications
Yu et al. Degradable, ultra-flexible, transparent and conductive film made of assembling CuNWs on chitosan

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21739787

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21739787

Country of ref document: EP

Kind code of ref document: A1