Abstract: An aromatic copoly(ester-sulfone) that contains one or more aromatic ester repeating units and one or more aromatic sulfonyl repeating units is provided. While a wide variety of aromatic ester repeating units may be employed, the polymer is nevertheless “low naphthenic” to the extent that it contains a minimal content of repeating units derived from naphthenic hydroxycarboxylic acids and naphthenic dicarboxylic acids. Despite the absence of a high level of conventional naphthenic acid repeating units, the present inventors have discovered that selective control over the type and relative concentration of the aromatic sulfonyl repeating units can lead to “low naphthenic” polymers that are not only soluble in certain solvents, but also capable of exhibiting good mechanical properties. Thus, the ability of the resulting polymer to be dissolved or dispersed in various solvents can be enhanced without sacrificing performance.

Abstract: An improved backsheet used in the construction of solar panels is disclosed. A method of manufacturing the backsheet and solar panel comprising the backsheet, including coextrusion processes are also disclosed. Additionally, a photovoltaic solar panel module comprising the backsheet of the invention is disclosed. The backsheet of the instant invention may comprise an exterior layer having inner and outer surfaces, a middle layer, having inner and outer surfaces, and an interior layer having inner and outer surfaces. In one embodiment of the invention, the outer surface of the middle layer may be adjoined to the inner surface of the exterior layer, and the inner surface of the middle layer may be adjoined to the outer surface of the interior layer. The exterior layer, middle layer, and interior layer may be adjoined via a co-extrusion process, thereby eliminating the need for the use of adhesives for bonding the layers of the backsheet together.

Abstract: To provide a multilayer structure having high gas bather property and crack resistance as well as excellent fatigue resistance, an inner liner for a pneumatic tire using the multilayer structure, and a pneumatic tire comprising the inner liner. According to the present invention, the multilayer structure includes a barrier layer 2 made of polymer material with 50% or less elongation at break conforming to JIS K 7113 at 20° C. and 65% RH and an elastomer layer 3 made of polymer material with 100% or more elongation at break conforming to JIS K 7113 at 20° C. and 65% RH, wherein a plastic deformation amount at the time of 100% strain input is larger than a deformation amount at a tolerance point.

Abstract: The present invention is in the field of polymer interlayers used in multiple layer glass panels, and specifically the present invention is in the field of antiblocking agents for polymer interlayers and methods of effectively incorporating such agents into interlayers.

Abstract: The present invention generally provides implantable articles and methods of forming implantable articles from a crosslinked ultrahigh molecular weight polyethylene (“UHMWPE”) blend stabilized with Vitamin E. The crosslinked UHMWPE blend may be prepared by combining the UHMWPE material and vitamin E prior to irradiating the UHMWPE blend with electron beam radiation at a sufficient radiation dose rate to induce crosslinking. The crosslinked UHMWPE blend may be incorporated into a variety of implants, and in particular, into endoprosthetic joint replacements.

Abstract: A water-soluble substrate, and more particularly a water-soluble substrate that is resistant to contact with small amounts of water, and methods of making the same are disclosed. The water-soluble substrate comprises a first surface and a second surface. At least two coating layers are applied to at least one of said first and second surfaces, wherein said at least two coating layers substantially cover said at least one of said first and second surfaces, and wherein a lubricant is applied between said at least two coating layers. Articles, such as pouches, made from the water-soluble substrate, are also disclosed herein.

Abstract: Multilayer coating systems for mitigating ice build-up on a substrate, methods of applying and related substrates are disclosed. The coating system may comprise a first coating, and a second coating deposited on at least a portion of the first coating, wherein the first coating and/or second coating comprises a near-IR absorber. Methods of applying a multilayer coating composition to a substrate may comprise applying a first coating, and applying a second coating over at least a portion of the first coating, wherein the first coating and/or second coating comprises a near-IR absorber.

Abstract: An article, such as a bicycle wheel (10), includes a substrate, at least a surface of the substrate being made of or containing a composite material comprising fibres dispersed in an organic matrix, for example a carbon fibre composite. A thermal sprayed first layer of coating material is provided on the surface, such as the braking area of the rim of the bicycle, the coating material of the first layer wholly comprising inorganic material and including at least one of the group comprising TiO2, titanate, Al2O3 and aluminate.

Abstract: A transparent laminate is provided that includes at least one chemically prestressed pane having a thickness, a compressive stress (CS) of a surface layer, a thickness of the prestressed surface layer and a tensile stress (CT) of an interior portion. The tensile stress (CT) is greater than 0 and is less than the compressive stress divided by 50.

Abstract: Laminate comprising a carrier and a coating layer, wherein the coating layer is applied over at least part of the carrier, the coating layer comprising a polyester derived from an aliphatic polyalcohol with 2-15 carbon atoms and a polyacid, the coating layer having a thickness in the range of 10-4000 microns, wherein the aliphatic polyalcohol contains at least 50 mol. % of glycerol and the polyacid contains at least 30 wt. % of tricarboxylic acid. Optionally a second carrier may be applied over at least part of the coating layer. If so desired, a further coating layer is applied over at least part of the second carrier, with optional further carrier-coating stacks applied over the further carrier. Preferably the tricarboxylic acid is citric acid. The laminate according to the invention may be, e.g., a multiplex-type material. The laminate according to the invention has fire-retardant properties which makes it particularly suitable for use in applications where fire-retardancy is an issue.

Abstract: A lidding film including a polyester film including a bio-based polyester, and an extrusion coated heat seal layer including a bio-based polymer. The polyester film may include a biaxially oriented core layer including bio-based polyester and an amorphous copolyester skin layer. The heat seal layer may include a low density polyethylene.

Abstract: The present invention relates to an organic-inorganic hybrid transparent hydrogel complex containing a polymerizable acrylic monomer, a metal alkoxide sol solution, a water-soluble salt, a phosphorus compound, a silane coupling agent, a quaternary ammonium salt, a polymerization initiator, and water. Moreover, the present invention provides a fire retardant glass assembly using the organic-inorganic hybrid transparent hydrogel complex and a manufacturing method thereof. The organic-inorganic hybrid transparent hydrogel complex according to the present invention has excellent properties such as long-term transparency, flame-retardancy, thermal insulation, long-term durability, and weather resistance, and thus it can be suitably used as a fire retardant material for fire retardant glass.

Abstract: Optically clear adhesives and laminates that include the adhesives are provided. The adhesives and laminates remain haze-free and are cloud point-resistant when placed in environments of high humidity and elevated temperature. The adhesives and laminates are useful in optical electronic display applications.

Abstract: The present invention relates to oil-extended styrenic block copolymer compositions that include a thermoplastic polymer, such as polystyrene, and a styrenic block copolymer, especially a linear styrene-butadiene-styrene triblock copolymer, with a styrene content less than 23 percent by weight, based upon total composition weight. The compositions yield very thin polymeric films with satisfactory physical properties.

Abstract: Provided are a back sheet for a solar cell module and a solar cell module including the same, the solar cell module comprises a polyester film layer and a fluorine coating layer which coats at least one surface of the polyester film layer. The back sheet is formed on an upper surface of the polyester film layer, and include s a polyethylene film layer attached to an ethylene vinyl acetate (EVA) sheet of the solar cell module. The back sheet for the solar cell module can be distributed at a low cost, and has excellent adhesive property, moisture barrier property (water vapor -permeability preventing property) and the like.

Abstract: An impact-resistant film comprises at least one layer of an elastomeric polymer material and an adhesive layer.

Abstract: A tack film material comprises a carrier substrate comprising a polymer film having first and second major surfaces. A surface layer on the first and second major surfaces comprises a resinous non-asphaltic material or a material including about 50% or more resinous non-asphaltic component and about 50% of less of asphaltic component. the surface layer is capable of forming a bond with an adjacent layer of asphaltic paving material, when the surface layer is heated to a temperature of about 120° C. or more under a pressure that is applied to the tack film material by an overlying layer of the asphaltic paving material having a thickness of about 3.8 cm (1.5 inch) or more laid. The surface layer is not tacky at a temperature of about 20° C. and a pressure of about one atmosphere.

Abstract: A film whose outer layer is composed of a molding composition which is in essence composed of the following components: a) from 3 to 50% by weight of a polyamide, selected from the group of PA11 and PA12, and b) from 50 to 97% by weight of a polyamide, selected from the group of PA1012 and PA1212, where the percentages are based on the entirety of components a) and b), is suitable for decoration of moldings which retain their gloss during their service time.

Abstract: The present invention provides an acid terpolymer comprising multilayer film or sheet and safety laminates and solar cell pre-lamination assemblies comprising the same.

Abstract: The present invention aims to provide a photostimulable phosphor for obtaining a two-dimensional or three-dimensional dosimeter, the photostimulable phosphor exerting superior handleability, exhibiting superior biological equivalence, and having superior precision. The present invention also aims to provide a laminate using the photostimulable phosphor. The aforementioned objects are achieved by means of a method for producing a photostimulable phosphor, the method comprising a step A for mixing lithium tetraborate, boron oxide and silver oxide and a step B for obtaining the photostimulable phosphor comprising lithium heptaborate as a base material and silver as a luminescent center present in the base material by firing the aforementioned mixture at 820 to 860° C., wherein the molar ratio between the lithium tetraborate and the boron oxide in the step A is X:1 (X>1), and the amount of the silver oxide is 0.06 to 1.0 mass % relative to the total mass of the lithium tetraborate and the boron oxide.

Abstract: Film structures containing a biaxially oriented film with an extruded polyolefin layer on each side of the biaxially oriented film are obtained. One polyolefin layer may, for example, be fin sealed to exhibit a peelable heat sealable performance. The other polyolefin layer may exhibit a paper like appearance and may be lap sealable.

Abstract: A water-soluble substrate, and more particularly a water-soluble substrate that is resistant to contact with small amounts of water, and methods of making the same are disclosed. A coating which is less water-soluble than the water-soluble substrate and in the form of particles, is applied to and substantially covers at least one surface of the water-soluble substrate. The weight ratio of coating to water-soluble substrate is higher than 0.8. Articles, such as pouches, made from the water-soluble substrate, are also disclosed herein.

Abstract: The ceramic slurry is prepared by mixing a ceramic powder, a solvent, a dispersion medium, an isocyanate, a polyol, and a catalyst for accelerating a urethane reaction between the isocyanate and the polyol. A temperature-sensitive catalyst, which substantially exhibits a catalyst function only within a specific temperature range including an active temperature and higher than room temperature, is used as the catalyst. In a solidifying and drying step performed after a molding step of the slurry at room temperature, the solidification/drying temperature is set to be a high temperature within the range (within the specific temperature range) relatively close to the active temperature of the temperature-sensitive catalyst, and this temperature is maintained. Thus, the catalyst function can sufficiently be exhibited under high temperature.

Abstract: Provided is a shatterproofing member including a pressure-sensitive adhesive layer convertible into an adhesive layer, which allows adherends to be instantly fixed to each other, allows the adherends to be reattached to each other, is excellent in processability such as being able to be cut into a sheet shape, is not peeled from the adherends even when exposed to a high-temperature atmosphere such as one in a fire, and can express shatterproof property when attached to an adherend that is broken by combustion such as glass even if exposed to combustion during a fire or the like. The shatterproofing member including a pressure-sensitive adhesive layer convertible into an adhesive layer includes: a pressure-sensitive adhesive layer convertible into an adhesive layer; and a flame-resistant material, in which the pressure-sensitive adhesive layer convertible into an adhesive layer has pressure-sensitive adhesive property before being sintered, and has adhesive property after being sintered.

Abstract: Provided is an impact absorbing material comprising a resin composition which contains (A) a block copolymer comprising polystyrene in its both end blocks and a conjugated diene polymer in its middle part block and (B) a thermoplastic resin, wherein the block copolymer (A) contains (A1) a block copolymer whose middle part block is not hydrogenated and (A2) a block copolymer whose middle part block is hydrogenated, wherein the maximum peak temperature of loss tangent (tan ?) of the block copolymer (A1) as obtained by a dynamic viscoelasticity measurement is in the range of ?20° C. or higher and lower than 25° C., and the maximum peak temperature of loss tangent (tan ?) of the block copolymer (A2) as obtained by a dynamic viscoelasticity measurement is in the range of ?30° C. or higher and lower than 25° C.

Abstract: A vehicle trim element that includes a complex formed from at least one layer of ligneous material and a reinforcing layer that extends over an inner face of the layer of ligneous material. The trim element further includes a substrate made from a first plastic material and at least one insert made from a second plastic material. The insert is located between the reinforcing layer of the complex and the substrate so as to space the substrate away from the reinforcing layer. The substrate is overmolded by injection on the insert.

Abstract: A single layer film containing at least one anionic hydrophilic group selected from a sulfonic acid group, a carboxyl group and a phosphate group, wherein an anion concentration ratio (Sa/Da) of an anion concentration at a surface (Sa) to an anion concentration at a deep part (Da) is 1.1 or more. The single layer film is a copolymer prepared by polymerizing a composition containing a compound (I) represented by the general formula (1) ([X]s[M1]l[M2]m (1)) and a compound (II) having two or more (meth)acryloyl groups in a molecule at a molar ratio of 15:1 to 1:30 and having a water contact angle of 30° or less. Such a single layer film has high hydrophilicity and surface hardness and is excellent in antifogging property, antifouling property and antistatic property, thus is useful as an antifogging material, an antifouling material, an antistatic material and a multilayer body.

Abstract: The invention relates to a glazing comprising a glass substrate and a complex sheet made of a plastic comprising a plasticized polyvinyl butyral layer and a polyester film provided with a scratch-resistant and abrasion-resistant coating, an adhesive layer of thermoplastic polyurethane being inserted between the glass substrate and the polyvinyl butyral layer of the complex sheet of plastic, characterized in that the adhesion of the polyester film to the polyvinyl butyral layer, measured by exerting on a 1 cm wide strip of the polyester film a tensile force perpendicular to the surface of the glazing with a pull rate of 5 cm/min, is at least equal to 3 daN/cm. It also relates to the application of such a glazing for an airborne transport vehicle in particular.

Abstract: A structure that comprises a substrate; a cross-linked random free radical copolymer on the substrate; and a self-assembled patterned diblock copolymer film on the random copolymer; wherein the random copolymer is energy neutral with respect to each block of the diblock copolymer film. A method of making the structure is provided.

Abstract: The present invention relates to a non-flammable cushioning and sealing sheet and, more particularly to, a sheet having a sequential layered structure of an adhesive layer, a polyurethane layer, and a surface coating layer, the polyurethane layer containing melamine polyphosphate and diphenyl cresyl phosphate as a flame retardant. The present invention also relates to a method for preparing a non-flammable cushioning and sealing sheet that comprises: preparing a polyurethane layer containing melamine polyphosphate and diphenyl cresyl phosphate as a flame retardant; forming a adhesive layer on the one side of the polyurethane layer; and forming a surface coating layer on the other side of the polyurethane layer where the adhesive layer is not formed.

Abstract: This disclosure concerns a thermoforming cover of portable electronic apparatus, comprising: a first transparent layer, being made by plastic material; a color layer, being printed on the first transparent layer; an adhesive layer, being covered on the color layer; and a second transparent layer, being made by plastic material, and disposed on the adhesive layer; wherein the first transparent layer can be set as substrate, and the color layer, the adhesive layer and the second transparent layer are disposed on the first transparent layer by step, then a thermoforming cover can be manufactured in a mold through thermoforming process.

Abstract: A thermosettable pressure sensitive adhesive tape comprising at least first and second adhesive layers bonded together. Each of the adhesive layers comprises a thermosettable pressure sensitive adhesive, which is the photo-polymerization reaction product of starting materials. The starting materials for each adhesive layer comprises at least a photo-polymerizable acrylic component and a thermosettable epoxy component. The thermosettable pressure sensitive adhesive, used for either of the two adhesive layers, is not black when fully cured without the presence of a black coloring pigment. The first adhesive layer is made from a layer of starting materials that is thin enough to allow substantial photo-polymerization of the starting materials, even with the starting materials containing a sufficient amount of a black coloring pigment to cause the first adhesive to have a black color after the first adhesive is substantially cured.

Abstract: Composite face panels for use with structural insulated panels (SIP) are provided to form a suitable replacement for structural insulated panels that employ oriented strand board or plywood. The structural insulated panel has a sandwich structure with a generally planar, insulating core. A composite face panel is disposed on each of the opposed surfaces of the insulating core. The insulating core composition includes an insulating material that is formed of an expanded polystyrene or a rigid polyurethane foam. Each composite face panel includes a core and face sheets on each surface of the core. The core composition includes mixture of a resin binder and a fire retardant. The resin binder can be formed of a methacrylate modified urethane, and the fire retardant can be formed of alumina trihydrate.

Abstract: Provided are a coating composition for forming a gas barrier layer as configured such that a specific compound having two or more 5-membered cyclic carbonate groups and a compound having two or more amino groups are reactable at an equivalent ratio of functional groups of 0.8 to 1.25 to form the gas barrier layer with a polyhydroxyurethane resin as a principal component; a gas barrier film formed of a single layer or multiple layers, at least one of the layer or layers that forms or form the film is a layer that exhibits gas barrier properties, and the layer is formed of a polyhydroxyurethane resin having a specific chemical structure; and a production method of a film having gas barrier properties.

Abstract: There are provided an etching mask which has a superior thermal imprinting characteristic and also a good anti-etching characteristic, a base material with the etching mask, a microfabricated product to which those etching mask and base material are applied, and a production method of the microfabricated product. The etching mask formed of a thermoplastic resin containing at least one kind of skeleton expressed by a chemical formula (1) or a chemical formula (2) in a main chain wherein R1, R2, R3, R4, R5, R6, R7, R8 in the formulae (1), (2) can be different or same one another, each of which is a hydrogen atom, a deuterium atom, a hydrocarbon group having a carbon number of 1 to 15, a halogen atom, or a substituent group containing a hetero atom like oxygen or sulfur, and may form a ring structure one another and wherein m and n are integers equal to or greater than 0.

Abstract: The present invention provides a prepreg comprising a reinforcement fiber [A], an epoxy resin [B] having two or more epoxy groups per molecule, a compound [C] capable of curing component [B], crosslinked resin particles [D] having a refractive index in the range of 1.49 to 1.61, and carbon black [E]. Furthermore, the surface layer of the prepreg that occupies 10% of the average prepreg thickness from each surface of the prepreg comprises components [B] to [E], and the refractive index, n0, of a cured epoxy resin produced by curing a resin composition comprising component [B] and component [C] and the refractive index, n1, of component [D] have the following relationship: 0.92?n1/n0?1.05. Thus, the invention provides a prepreg that can produce fiber reinforced composite materials having decorative surfaces with decreased appearance irregularities and accordingly serves to manufacture fiber reinforced composite materials having excellent appearance.

Abstract: A gas barrier plastic molded product having high gas barrier properties is provided. The gas barrier plastic molded product is a gas barrier plastic molded product comprising a plastic molded product and a gas barrier thin film provided on the surface of the plastic molded product, in which the gas barrier thin film contains silicon (Si), carbon (C), oxygen (O) and hydrogen (H) as constituent elements, and comprises a Si-containing layer having a Si content percentage represented by (Mathematical Formula 1) of 40.1% or more: Si content percentage[%]={(Si content[atomic %])/(total content of Si, O and C [atomic %])}×100??(Mathematical Formula 1) wherein in Mathematical Formula 1, the content of Si, O or C is a content thereof in the items of the three elements of Si, O and C.

Abstract: The invention relates to A bi-axially stretched breathable film comprising a polymeric mixture, said polymeric mixture comprising based on the total weight of the polymeric mixture/—at least 50% of at least one polyether block copolymer; and —from 0.5 to less than 50% of at least one polyester. The invention also relates to a method to manufacture said film, and uses of said film. The invention also relates to a method for producing a bi-axially stretched breathable film comprising at least one polyether block copolymer.

Abstract: Provided is a flame-retardant member having thermal functionality, flexibility, and a high level of flame retardancy. The thermally functional flame-retardant polymer member includes a polymer layer (B), a flame-retardant layer (A), and a thermally functional layer (L) in the stated order, in which the flame-retardant layer (A) includes a layer containing a layered inorganic compound (f) in a polymer.

Abstract: Synthetic paper, including: between 10 and 90 wt. % of structural fibers, and between 90 and 10 wt. % of bonding fibers. The structural fibers are poly(p-phenylene telephthalamide) (PPTA) fibers having a fineness of between 1 and 2 d, and a length of between 3 and 10 mm. The bonding fibers are fibrids or a pulp of the PPTA. The structural fibers and the bonding fibers are shaped by a wet-forming papermaking method, and hot rolled to form the synthetic paper.

Abstract: A film is mated with a paper to form a space therebetween. The film is made of plastics material. Separation of the paper from the film can provide access to an article stored in the space provided between the paper and the film.

Abstract: The instant invention provides a composition suitable for stretch hood, method of producing the same, and articles made therefrom. The article according to the present invention comprises a multi-layer film according to the present invention has a thickness of at least 3 mils comprising at least one inner layer and two exterior layers, wherein the inner layer comprises at least 50 weight percent polyethylene copolymer having a melt index less than 2 grams/10 minutes, a density less than or equal to 0.910 g/cm3, a total heat of fusion less than 120 Joules/gram and a heat of fusion above 115° C. of less than 5 Joules/gram, the total heat of fusion of the inner layer less than the heat of fusion of either of the two exterior layers, and wherein the multi-layer film has an elastic recovery of at least 40% when stretched to 100% elongation.

Abstract: A superhydrophobic structure that may have a titanium substrate and nanoporous titanium oxide layer grown on the titanium substrate by anodization. The titanium oxide layer may have a plurality of nano-tube structures that create a microscopically rough surface on the titanium substrate. A hydrophobic coating may be deposited over the titanium oxide layer to create a superhydrophobic surface on the titanium substrate. The titanium oxide layer may provide a photocatalytic reaction with oxygen in surrounding air to oxidize organic contaminants on the superhydrophobic surface.

Abstract: A resin molded body comprises a front surface layer disposed on a front surface side, a back surface layer disposed on a back surface side, and an intermediate layer disposed between the front surface layer and the back surface layer, each of the layers has a micro-phase separated structure including lamellar micro domains, each of the micro domains of the layers has a wave-like shape having amplitudes in the opposite direction of the front surface and the back surface, a maximum value of predetermined distances in the micro domains of the front surface layer and a maximum value of predetermined distances in the micro domains of the back surface layer are larger than the wavelength in the visible light range, and predetermined distances in the micro domains of the intermediate layer are equal to or less than the wavelength in the visible light range.

Abstract: An electrically conductive coating composition is provided for use on aircraft and other substrate surfaces to prevent the formation of ice or to melt ice. The conductive coating composition may include a nanomaterial such as carbon nanotubes dispersed in a solvent which may be applied to a substrate surface to form a thin film which is resistively heatable. The conductive coating may also comprise a nanomaterial formed from carbon nanotubes or fullerenes grafted to a polymer containing an active functional group which renders a substrate surface icephobic and is also resistively heatable.

Abstract: This invention discloses a laminated film comprising two thermoplastic polyester outer layers of identical polytrimethylene terephthalates, different polytrimethylene terephthalates, identical blends of polytrimethylene terephthalate or different blends of polytrimethylene terephthalate and a middle layer selected from a metal foil, polyethylene-vinyl acetate, and a thermoplastic polymer comprising thermoplastic polyester different from the thermoplastic polyester of the two outer layers, wherein the middle layer is laminated between the two outer layers. This invention also discloses a solar panel comprising a back sheet made of the laminated film.

Abstract: A construction element obtained by fastening a reinforcement to an insulating panel, using an adhesive containing one or more mineral binders and/or one or more polymeric binders, and optionally one or more fillers, optionally one or more adjuvants and optionally one or more additives, the reinforcement being embedded partially but not completely in the adhesive.

Abstract: Provided herein include methods and compositions pertaining to coatings, such as paints, for covering a substrate. In some aspects and embodiments the coatings may include a heat reflective metal oxide pigment that, applied to an external surface of a building (or is applied on a substrate used for an external surface of a building such as an architectural metal panel, EIFS, as a stucco top coat or as a top coat for roofing tiles) reduces the energy consumption in the building. In other aspects and embodiments, provided are textured coatings having a texturing material; for example, methods and compositions are provided pertaining to textured coatings that can be applied robotically or in an automated fashion. In various aspects and embodiments, textured coatings are provided that include a texturing material and a heat reflective metal oxide pigment. In some aspects and embodiments heat reflective coatings for concrete or clay tiles and methods of applying such are provided.

Abstract: A composition comprises a fluoropolymer such as an elastomeric fluoropolymer and at least 1 weight % of a fluoro-functionalized near-infrared radiation absorber. This composition can be formed into laser-engraveable layers for various elements that can be laser-engraved to provide relief images. The resulting laser-engraved elements can take various forms including flexographic printing members, and can be used to apply various inks to receiver materials in an imagewise fashion.

Abstract: Dissociation of a macroscale version of an aramid fiber leads to the nanofiber form of this polymer. Indefinitely stable dispersions of uniform high-aspect-ratio aramid nanofibers (ANFs) with diameters between 3 and 30 nm controlled by the media composition and up to 10 ?m in length are obtained. ANFs can be processed in transparent thin films using layer-by-layer assembly (LBL) with superior mechanical performance.