Embodiments described herein relate generally to plant extract compositions and methods to isolate fatty acid esters derived from crosslinked polyesters. Particular embodiments are directed to methods of preparing compositions of fatty acid esters by treating crosslinked polyesters or other crosslinked networks with an acid and an alcohol.

Provided are: a gas barrier resin composition having sufficient long-run workability and superior gas barrier properties which compare favorably to those of fossil fuel-derived resins, while containing a biomass-derived raw material; a multilayer structure in which the gas barrier resin is used; and a method for producing such a gas barrier resin composition. The gas barrier resin composition contains at least one type of saponified ethylene-vinyl ester copolymer, wherein of ethylene and a vinyl ester, which are raw materials of the at least one type of saponified ethylene-vinyl ester copolymer, a part is derived from biomass, and a remainder is derived from a fossil fuel.

Novel methods for producing porous silicone compositions are disclosed. Methods of this invention provide improved processes for preparing porous silicone rubbers having low specific gravity and mainly closed cells which are suitable for highly permeable gas penetration while adequately sealing liquid material. Examples of these sealing materials include but are not limited to encapsulants for bioindicators and syringe sealing components wherein the permeability is sufficient to permit sterilization while preventing passage or leaking of liquids to be sterilized through the described silicone materials.

Provided is a method for producing a thermoplastic elastomer composition that can form a molded article having both good appearance and high stiffness. The method for producing a thermoplastic elastomer composition comprises the following first step and second step, wherein the produced thermoplastic elastomer composition contains 5 mass % or less of a mineral oil (C): first step: a step of melt-kneading polypropylene (A-1) and an ethylene-based copolymer rubber (B) in the presence of an organic peroxide, the polypropylene (A-1) being polypropylene of which 20° C. xylene insoluble fraction has an intrinsic viscosity [η.sub.cxis] of 0.1 dl/g or more and less than 1.5 dl/g; and second step: a step of further adding polypropylene (A-2) of which 20° C. xylene insoluble fraction has an intrinsic viscosity [η.sub.cxis] of 1.5 dl/g or more and 7 dl/g or less, and melt-kneading the resulting mixture.

The present invention relates to a single-stage process for the production of starch blends in a twin-screw extruder or two twin-screw extruders arranged in series, where i) the starch, together with a plasticizer, passes through a wetting section of length 8D to 30D in an extruder or in a wetting section of length 8D to 80D if two extruders are used at temperatures below the gelatinization temperature of the starch, with mixing, where D is defined as the screw diameter of the screw cylinder and the wetting section is defined as starting at that point on the extruder screw at which the starch and the entire or partial quantity of plasticizer encounter one another and ending at that point in the extruder at which the starch is gelatinized and is digested to give thermoplastic starch; ii) in a plastifying section of length 10D to 50D the extruder temperature is adjusted stepwise to above 130° C., where the starch is digested, destructured and thermoplastified, and is dispersed in a starch-immiscible polymer, and a water content below 5%, based on the starch blend, is established before the material leaves the extruder; where the starch-immiscible polymer is added in molten or granular form at any desired point in the extruder, and a mixture of all of the components present is consequently produced.

A housing structure manufacturing method and an electronic device are provided. The housing structure manufacturing method includes providing a plurality of memory polymeric materials, heating the plurality of memory polymeric materials, and forming the housing structure having a first morphology by printing the plurality of memory polymeric materials that are heated.

The present disclosure relates to a method for controlling thermoplasticity and toughness of a redox-modified plant fiber, comprising following steps: (1) pretreating a plant fiber; (2) obtaining an oxidation-modified plant fiber by adding an oxidant solution, then filtering, and washing; and obtaining the redox-modified plant fiber by adding a reductant solution, then filtering, and washing; and (3) fully mixing a plasticizer with the redox-modified plant fiber; the plasticizer being a hydroxyl plasticizer, an ionic liquid plasticizer, a deep eutectic solvent, an ester plasticizer, an amine plasticizer, a glycidyl plasticizer, or an inorganic salt plasticizer. The method according to the present disclosure can improve the toughness of the redox-modified plant fiber material, reduce the processing temperature of the plant fiber material, and broaden the processing window of the plant fiber material.

A rABS/PBT/ASG composite material and a preparation method thereof utilize the characteristics of rABS with carboxyl and hydroxyl groups, wherein rABS are pre-blended with ASG to increase the viscosity, so that the epoxy groups on the ASG molecules react with the hydroxyl groups and the carboxyl groups on the rABS, and the acrylonitrile-styrene segments in ASG and rABS are thermodynamically miscible, followed by reacting and blending with PBT to prepare the rABS/PBT/ASG composite material. ASG acts as a chain extender and solubilizer in the mixture. The mixture prepared in this way have good compatibility, and the tensile strength, impact strength and elongation at break of the composite material are comprehensively improved. The composite material obtained has the advantages of both ABS and PBT materials, which has broad application prospects in the field of ABS plastic recycling.

Disclosed are polymeric compositions comprising polyhydroxyalkanoates. These compositions can comprise a blend comprising a polyhydroxyalkanoate (PHA) polymer, and a rubber polymer. The blend can comprise a biphasic mixture comprising a first phase comprising the PHA polymer, and a second phase comprising the rubber polymer dispersed with the first phase. The rubber polymer can be crosslinked, for example, through reaction with a free radical initiator. By incorporating the dynamically crosslinked rubber polymer, the polymer composition can exhibit one or more improved characteristics relative to PHA alone, including improved thermal stability, improved melt strength, improved flexibility, improved toughness, or a combination thereof. Also provided are articles formed at least in part from these polymeric compositions, as well as methods of making these polymeric compositions.

A polymer-nanocellulose-lignin composite as disclosed comprises a polymer, nanocellulose, and lignin, wherein lignin forms a hydrophobic interface between the polymer and the nanocellulose. In some variations, a process is disclosed for producing a polymer-nanocellulose-lignin composite material, comprising: fractionating lignocellulosic biomass in the presence of an acid, a solvent for lignin, and water, to generate cellulose-rich solids and a liquid containing hemicellulose and lignin, wherein lignin deposits onto fiber surfaces or into fiber pores; mechanically treating the cellulose-rich solids to form a hydrophobic nanocellulose material comprising cellulose fibrils and/or cellulose crystals; hydrolyzing the hemicellulose to generate fermentable hemicellulosic sugars; fermenting the fermentable hemicellulosic sugars to generate a monomer or monomer precursor; polymerizing the monomer to produce a polymer; and combining the polymer with the lignin-coated nanocellulose to generate a polymer-nanocellulose-lignin composite material for use in a wide variety of products.