Abstract: The present disclosure relates to a monomer composition for synthesizing recycled plastic that contains a high-purity aromatic diol compound recovered through recycling by chemical decomposition of a polycarbonate-based resin, a method for preparing the same, and a recycled plastic and molded product using the same.

Abstract: Provided is a method for recycling a battery electrode by immersing the electrode into a delamination solution and subsequently precipitating a polymeric binder with the addition of a precipitation agent; wherein the electrode comprises a current collector and an electrode layer material coated on one side or both sides of the current collector; wherein the electrode layer material comprises a polymeric binder; and wherein the polymeric binder comprises a copolymer comprising a structural unit derived from an acid group-containing monomer and a structural unit derived from a hydrogen bond-forming group-containing monomer (ii). The method disclosed herein circumvents complex separation process, corrosion of current collector and contamination of polymeric binder, enables excellent materials recovery and allows the recycling of battery electrode to be achieved in a highly efficient manner.

Abstract: An embodiment includes a system comprising: an iodine containing thermoset open-cell shape memory polymer (SMP) foam that is x-ray visible; wherein (a) the SMP foam is configured to expand from a compressed secondary state to an expanded primary state in response to thermal stimulus, (b) the SMP foam is a poly(urethane-urea-amide). Other embodiments are described herein.

Abstract: Methods for processing LDPE recyclates including, but not limited to, polyethylene and polypropylene and compositions therefrom are provided. LDPE recyclate can be visbroken to improve processing characteristics and/or devolatilized to remove waste byproducts to produce processed LDPE recyclates. Processed LDPE recyclates are compounded with pre-consumer polyolefins to produce blend compositions having acceptable or even improved processing characteristics. Such pre-consumer polyolefins can also be visbroken to further tailor processing characteristics of such polymer blends. A combination of extruders and/or extruder zones can be used at the same or different locations for visbreaking and/or compounding of both LDPE recyclate and/or pre-consumer polyolefins.

Abstract: A recycling process for a polyamide waste material includes the following steps: adding a polyamide waste material into a mixed solvent to obtain a solution, heating the solution to 50° C. to a reflux temperature of the solution, conducting stirring for dissolution, and then conducting decolorization treatment and filtration to obtain a polyamide solution; and adding the polyamide solution into water, precipitating polyamide as a solid in deionized water, and conducting separation to obtain recycled polyamide. The mixed solvent includes, in parts by weight, 10-30 parts of phenol and 15-40 parts of toluene.

Abstract: Articles (e.g., a colloid) and methods for providing complex colloids comprising a hydrocarbon phase (e.g., a hydrocarbon phase comprising a liquid crystal) and a fluorocarbon phase are generally described. In some embodiments, the hydrocarbon phase and the fluorocarbon phase are distinct.

Abstract: A method of hydrolyzing a polyurethane is disclosed in which the polyurethane is contacted with water in the presence of a strong inorganic base having a pKb value at 25° C. of below 1, and a catalyst that is a quaternary ammonium salt containing an ammonium cation containing 6 to 14 carbon atoms if the ammonium cation does not contain a benzyl residue or containing 6 to 12 carbon atoms if the ammonium cation contains a benzyl residue. An active hydrogen containing polyether and an organic polyamine can be recovered in high yields. The present method finds use in polyurethane recycling.

Abstract: The process disclosed includes an extruder under extrusion conditions at a temperature from 50° C. to 250° C., and a polymer composition. The polymer composition includes (A) greater than or equal to 5 wt % of a silane functionalized olefin-based polymer with first melting temperature, Tm1, (B) optionally, a nonsilane functionalized polyolefin, with second melting temperature, Tm2, (C) a highly effective silanol condensation catalyst (HEC), (D) a permeability modifier, and (E) optionally, a scorch inhibitor. The process includes introducing a physical blowing agent into the polymer composition to form a foamable composition. The foamable composition is cooled to a foaming temperature from 10° C. less than to 10° C. greater than Tm1. The foamable composition from an extruder exit die to form a foam composition. The foam composition is moisture cured to form a crosslinked foam composition having a density from 0.010 g/cc to 0.200 g/cc, and a gel content from 5% to 100%.

Abstract: The present application belongs to the field of thermal management technology, and discloses a functionalized silica aerogel powder and a preparation method thereof, an aerogel slurry and a preparation method and use thereof. A method for preparing the functionalized silica aerogel powder includes the following steps: (1) modifying halloysite nanotubes with dodecyl methacrylate and pentafluorophenyl methacrylate to obtain modified halloysite nanotubes; (2) preparing a silica sol; (3) adding the modified halloysite nanotubes into the silica sol to prepare a wet gel; and (4) preparing a functionalized silica aerogel powder through the wet gel. Further, the aerogel slurry was prepared using the functionalized silica aerogel powder, and an aerogel thermal insulation blanket was prepared using the aerogel slurry.

Abstract: The invention relates to a process for preparing foamed polymer-modified bitumen compositions and to the use thereof for the production of asphalt. The invention also relates to foamed polymer-modified bitumen compositions obtainable by this process. Furthermore, the invention relates to a process for producing an asphalt composition and to the use thereof in road applications. The process for the preparation of the foamed polymer-modified bitumen composition comprises the following steps: i) Heating and pressurizing a bitumen to obtain a hot flowing bitumen stream, ii) Injecting under pressure an aqueous polymer dispersion into the hot flowing bitumen stream obtained in step i), to obtain a pressurized flowing mixed stream of the bitumen and the aqueous polymer dispersion; iii) Expanding the flowing mixed stream, in particular to atmospheric pressure, such that the water contained in the aqueous polymer dispersion vaporizes and foams the mixed stream to obtain a foamed polymer-modified bitumen.

Abstract: A method for reducing an amount of a contaminant in a thermoplastic polymer comprising shearing a combination comprising a contaminated thermoplastic polymer in melt form, water, and a dispersing agent where the shearing causes a portion of the contaminant to be removed from the contaminated thermoplastic polymer (e.g. moved into an aqueous phase with the water or into another separate phase from the water and the polymer), and after shearing, separating the thermoplastic from the aqueous phase to recover thermoplastic polymer.

Abstract: A coated viscoelastic polyurethane foam includes a viscoelastic polyurethane foam having the coating thereon, the viscoelastic polyurethane foam having a resiliency of less than or equal to 20% as measured according to ASTM D3574, and a coating material on and embedded within the viscoelastic polyurethane foam, the coating material including an aqueous polymer emulsion and an encapsulated phase change material.

Abstract: A method includes depolymerizing post-consumer or post-industrial recycled polyethylene terephthalate (rPET) to form bis(2-hydroxyethyl) terephthalate (BHET), and reacting at least a portion of the BHET with a catalyst to form an alcohol. The alcohol includes cyclohexanedimethanol (CHDM) or 1,4-phenylenedimethanol (PDM). Further steps of the method include polymerizing the alcohol in the presence of additional BHET to form a polyester. The polyester may include poly(cyclohexylenedimethylene terephthalate (PCT), polyethylene terephthalate glycol (PETG) copolyester, polycyclohexylene dimethylene terephthalate glycol (PCTG) copolyester, polycyclohexylene dimethylene terephthalate acid (PCTA), or a monomer having repeating units with the structure (I), wherein n is an integer having a value of at least 20.

Abstract: Crosslinked fluorocarbon surface coating, kits therefor, microfluidic devices having crosslinked fluoropolymer surface coatings, and methods of use for droplet generation are provided. The kits, devices, and their methods have a droplet source region that is coated with a crosslinked fluoropolymer surface coating produced by the reaction of a fluorocarbon silane and a fluorocarbon polyol.

Abstract: A hot melt adhesive comprises a polylactide homopolymer or copolymer, such as polylactic acid; sulfonated copolyester; and at least one plasticizer, and is compostable. The plasticizer may be a solid plasticizer, such as a benzoate, and a second plasticizer may also be used. The adhesive is suitable for use in a variety of applications, such as case and carton applications, use with burlap or other compostable substrates for tree bulbs or plant seeds, and use with other compostable films, and is especially appropriate for dual-walled paperboard beverage cups. The adhesive demonstrates good bond performance comparable to non-compostable adhesives over a range of temperatures, reflective of the temperatures of hot and cold beverages.

Abstract: The present invention provides an effective and selective process for the depolymerization of polyethylene terephthalate (PET), polyethylene furanoate (PEF), polylactic acid, polycarbonates, polyethers and polyamides into pure and high yielding valorized products by combining the glycolysis-hydrolysis reactions using a homogeneous acidic ionic liquid (AIL) catalyst, resulting in excellent polymer conversion.

Abstract: An azulene-based branched poly aryl-piperidine anion exchange membrane and a preparation method thereof are provided. The exchange membrane includes an azulene-based branched poly aryl-piperidine polymer with a following structure: The preparation method includes: preparing an azulene-based branched poly aryl-piperidine precursor; preparing a cationic azulene-based branched poly aryl-piperidine; preparing the azulene-based branched poly aryl-piperidine anion exchange membrane.

Abstract: A PE waste material-based carbon-fixed aggregate with a wire mesh shell, and a preparation method of the PE waste material-based carbon-fixed aggregate are provided. The preparation method includes the following steps: S1, pretreatment of a PE material collected; S2, carbon fixation for a pumice to produce a carbon-fixed pumice; S3, preparation of a powder-adsorbed pumice; S4, high-temperature calcination to form a wire mesh shell skeleton; and S5, post-treatment. By providing the PE waste material-based carbon-fixed aggregate with the wire mesh shell and the preparation method of the PE waste material-based carbon-fixed aggregate, achieving the comprehensive and effective recycling of waste agricultural mulch films and drip irrigation belts while solving the problems that pervious concrete is susceptible to water erosion and aggregates have poor carbon fixation and sequestration effects.

Abstract: The present application provides foams having improved insulation and thermal performance and processes of forming said foams. Exemplary foams described herein are prepared according to a process comprising reacting a foamable composition comprising a blowing agent and one or more nucleating agents, under conditions effective to form the foam.

Abstract: A process for recycling a polyurethane material wherein the polyurethane material comprises a moiety that is capable of undergoing decomposition through acidolysis, the process comprising: contacting the polyurethane material with an acid solution and allowing at least a portion of the polyurethane material to decompose into a recovered raw material composition comprising a degradation compound; and introducing an acetoacetylated polyol into the recovered raw material composition and reacting the acetoacetylated polyol with the degradation compound to form a polyol compound.