Abstract: An object of the present invention is to provide an ion-exchange membrane for simply and inexpensively separating and purifying exosomes present in a biological sample such as serum. The invention relates to a cellulose-based ion-exchange membrane containing a cellulose-based polymer having at least one hydroxyl group or acetyl group at the 2-, 3-, or 6-position being replaced with a positively charged compound. The invention also relates to a method for purifying exosomes, including subjecting a sample containing exosomes to membrane permeation by using the cellulose-based ion-exchange membrane to allow for adsorption of the exosomes, bringing the membrane into contact with a washing liquid to remove impurities, and bringing the membrane into contact with an eluent to allow for desorption of the exosomes.

Abstract: A method of recovering polyolefin polymer from a three-dimensional printed object can include dissolving a polyolefin polymer of a three-dimensional printed object in a polyolefin-dissolving solvent to generate dissolved polyolefin polymer from the three-dimensional object, wherein the three-dimensional printed object includes from about 0.1 wt % to about 10 wt % particulate fusing compound and from about 90 wt % to about 99.9 wt % polyolefin polymer. The method can further include separating the particulate fusing compound from the polyolefin-dissolving solvent and the dissolved polyolefin polymer, and evaporating the polyolefin-dissolving solvent from the dissolved polyolefin polymer.

Abstract: A sports shoe includes an upper wherein a majority by weight of the upper is made from a thermoplastic base material and a sole wherein a majority by weight of the sole is made from the same thermoplastic base material. The sole and the upper are individually fabricated and joined to each other. The thermoplastic base material includes at least one of the following materials: thermoplastic polyurethane TPU, polyamide PA, polyethylene terephthalate PET, or polybutylene terephthalate PBT.

Abstract: A disposal method for a polyester-containing release film including the following steps is provided: providing a release film, which includes a base material and a release layer, wherein at least a material of the base includes polyester, and providing an acid washing step or an alkali washing step to the release film for removing the release layer, and to obtain a polyester-containing solid material.

Abstract: A method for treating a waste plastic based on a persulfate system is provided. The method includes the following steps: mixing the waste plastic, sulfuric acid, sulfate, peroxymonosulfate, and water, and reacting at 80-140° C. for 3-15 h to complete the treatment; where the waste plastic is polyethylene or polyethylene terephthalate; and the sulfate is copper sulfate or ferrous sulfate. The present invention reasonably regulates and controls each parameter in the reaction process while constructing a homogeneous catalysis system of transition metal activated peroxymonosulfate, and finally directionally converts the waste plastic into C7H12 and C10H12 fuels, which realizes high-efficiency recycling of the waste plastic, has a simple and convenient working procedure, and has a wide application prospect.

Abstract: A method for the fractionation of reclaimed polymer in at least one solvent in a process for purifying reclaimed polymers plastic recycling to increase their use in secondary applications. The reclaimed polymer is dissolved in a solvent within a reactor vessel having a stack of perforated discs which are oscillated. The linear motion of the stack speeds up dissolution time to minutes rather than hours and the required polymer to solvent ratio can be increased to 0.3 to 10% wt addition. Temperature and time effects are used to fractionate polymers of differing molecular weights to provide purified and graded plastics for secondary use at a commercially viable scale.

Abstract: Provided is a method for preparing a superabsorbent polymer to minimize surface damage to the polymer while maintaining absorption performance. Such method comprises steps of carrying out a crosslinking polymerization of a water-soluble ethylene-based unsaturated monomer having acidic groups which are at least partially neutralized, in the presence of a foaming agent, to form a water-containing gel polymer; and gel-pulverizing the water-containing gel polymer by extruding the water-containing gel polymer through a perforated panel having a plurality of holes using a screw extruder mounted inside a cylindrical pulverizer under a condition that a chopping index according to the following Equation 1 is 55 to 75: Chopping ? index = 2 ? ? ? N 60 ? 1 A ? 11 R [ Equation ? 1 ] wherein in Equation 1, all the variables are described herein.

Abstract: A method of recovering fluoropolymer from a three-dimensional printed object can include dissolving a fluoropolymer of a three-dimensional printed object in a fluoropolymer-dissolving solvent to generate dissolved fluoropolymer from the three-dimensional object, wherein the three-dimensional printed object includes from about 0.1 wt % to about 10 wt % particulate fusing compound and from about 90 wt % to about 99.9 wt % fluoropolymer. The method can further include separating the particulate fusing compound from the fluoropolymer-dissolving solvent and the dissolved fluoropolymer, and evaporating the fluoropolymer-dissolving solvent from the dissolved fluoropolymer.

Abstract: A method of forming a liquid-liquid mixing phase channel group, which has the steps of: ejecting the first liquid as droplets into the phase of the second liquid in a two-liquid phase system in which two immiscible liquids oppose each other at an interface; incorporating the droplets of the first liquid into the phase of the first liquid, accompanied by the second liquid around the first liquid by allowing to collide the jet of the droplets with the interface; and forming a continuously connected microfluidic channel group in which the space between the layered droplets of the first liquid are filled with the second liquid in the liquid-liquid mixing phase that grows from the interface as a starting point.

Abstract: A process for depolymerizing a polyester feedstock containing PET by, prior to the step of depolymerization by glycolysis and to the step of purification of the depolymerization effluent, an improved step of conditioning the feedstock in which the polyester feedstock is conditioned in terms of temperature and pressure and then mixed with a diol effluent in a static or dynamic mixer to substantially reduce the viscosity of the feedstock.

Abstract: The present invention relates to an improved process for depolymerization of polyurethanes under mild conditions, wherein polyether polyols and polyamines can be recovered in high yields. The method is practiced by hydrolyzing a polyurethane by contacting with water in the presence of a base containing an alkali metal cation and/or an ammonium cation and having a pKb value at 25° C. of from 1 to 10 and a catalyst selected from the group consisting of quaternary ammonium salts containing an ammonium cation containing 6 to 30 carbon atoms and organic sulfonates containing at least 7 carbon atoms to yield an active hydrogen containing polyether.

Abstract: The invention relates to a process for devulcanizing a vulcanized rubber mixture, comprising the following steps: A) providing or producing a vulcanized rubber mixture, B) comminuting the vulcanized rubber mixture into a granulate of vulcanized rubber particles, C) extruding the vulcanized rubber particles produced in step B) in a twin-screw extruder to form a devulcanized rubber mixture, wherein, during the extruding in step C) at least one regeneration reagent is added to the extruded rubber particles, wherein the regeneration reagent comprises at least one silane, at least one plasticizer, at least one aging stabilizer or mixtures thereof. The invention also comprises an apparatus for performing the method and the uses of the apparatus, and a rubber mixture and also a pneumatic vehicle tyre or a technical rubber article comprising a component composed of the rubber mixture.

Abstract: The present disclosure relates to a monomer composition for synthesizing recycled plastic which 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: A structured organic film (SOF) is disclosed including a plurality of segments, a plurality of linkers, and a plurality of ionic capping segments, where at least one or more ionic capping segments may include imidazolium. Implementations of the structured organic film (SOF) include where a concentration of ionic capping segments in the SOF is from about 0.1 to about 5.0 molar equivalents of ionic capping segments as compared to a concentration of nonionic segments in the SOF. A thickness of the SOF is from about 100 nm to about 500 ?m. At least one of the plurality of ionic capping segments may include n-hydroxyethyl-1,2,4,5-tetramethylimidazolium (NETMImBr). At least one of the plurality of ionic capping segments may include n-hydroxypropyl-1,2,4,5-tetramethylimidazolium (NPTMImBr). An ion-exchange membrane may include the structured organic film (SOF).

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.