The invention relates to a method for producing a biodegradable thermoplastic starch-based article intended to come into contact with foodstuffs. In this method, the semi-crystalline starch granules are transformed into a homogeneous and almost amorphous material, called thermoplastic starch, by the addition of plasticizers at high temperatures and under shear. Thermoplastic starch is modified with organic acid during melt processing to prevent the retrogradation of starch. Moreover, cellulose derivatives are used as the reinforcement filler of thermoplastic starch. The article is produced using hot-pressing and then coating by immersion in a waterproofing solution.

A preparation method of a fluoropolymer processing aid. The preparation method comprises the following steps: simultaneously adding ε-caprolactone and a fluoropolymer elastomer into a reactor, and heating to completely dissolve the fluoropolymer elastomer; and then cooling, adding polyol, mixing thoroughly, and adding an organotin catalyst to carry out a polymerization reaction; and after the reaction is finished, carrying out cooling, pulverizing or spray granulation so as to obtain the fluoropolymer processing aid. The processing aid prepared by using the method can reduce the extrusion pressure of a polymer during extrusion, improve the processing efficiency, improve the phenomena of melt rupture and “sharkskin” during polymer extrusion, and effectively enhance the surface quality of a product. Compared with the prior art, the processing aid of the invention has the characteristics of uniform dispersed particle size during polymer processing, no coking at a die head during long-time polymer extrusion processing, etc.

The present invention provides methods for preparing the nut waste pot composites from a nut waste component, one or more binders, and an oil using a compounder/extruder.

A composite resin molded body containing: a base resin; and a plurality of fibrous fillers dispersed in the base resin, wherein the plurality of fibrous fillers each contain a volatile medicinal agent, when the composite resin molded body is 100 mass %, a content of the plurality of fibrous fillers each containing the medicinal agent in the composite resin molded body is 10 mass % or more and 99 mass % or less, a part of each of at least one of the plurality of fibrous fillers is exposed on a surface of the composite resin molded body, and at least a part of a surface of each of the plurality of fibrous fillers is coated with a hydrolyzable coating resin.

A liquid crystal polyester resin composition containing 100 parts by mass of a liquid crystal polyester resin; and at least 10 parts by mass and at most 100 parts by mass of glass components; wherein the glass components contain glass fibers having a length of more than 30 μm and glass fine powders having a length of at least 4 μm and at most 30 μm; the number-average fiber length of the glass fibers is at least 50 μm and at most 200 μm; and the content of the fine powders is at least 50% and at most 95% relative to a total number of the glass components.

A masterbatch is disclosed, along with associated methods, and biodegradable filaments, fibers, yarns and fabrics. The masterbatch includes 0.2 to 5 mass % CaCO.sub.3, an aliphatic polyester with a repeat unit having from two to six carbons in the chain between ester groups, with the proviso that the 2 to 6 carbons in the chain do not include side chain carbons, and a carrier polymer selected from the group consisting of PET, nylon, other thermoplastic polymers, and combinations thereof.

A process can be used for preparing nanoparticles containing at least one bio-resorbable polyester. The nanoparticles are in the form of a powder with a Z-Average particle size D, in the range of 3 to 450 nm, and with a polydispersity index PDI in the range of 0.01 to 0.5. The process involves emulsion-solvent extraction or emulsion-solvent evaporation, and application of ultrasonic sound.

A biopolymer blend is provided that comprises a combination of three components: poly (butylene adipate-co-terephthalate) (PBAT); agriculture sourced polylactic acid (PLA); and engineered proteinaceous eggshell nanoparticles. The two polymer components can be present in any ratio but an approximate 70:30 ratio is preferred. The engineered proteinaceous eggshell nanoparticles are preferably about 10-25 nanometers. Also provided are methods of preparing biopolymer film and packaging components. Pelleted poly (butylene adipate-co-terephthalate) and agriculture sourced polylactic acid (PLA) are dissolved in chloroform and mixed together to form a polymer blend, and engineered proteinaceous eggshell nanoparticles are incorporated into the polymer blend, which is then extruded to create a biopolymer film or component.

A biodegradable composition, a biodegradable wrap film and a manufacturing method thereof are provided. The biodegradable wrap film includes an inner layer, at least one interlayer formed on the inner layer, and an outer layer formed on the interlayer. The inner layer, the at least one interlayer formed on the inner layer, and the outer layer are respectively formed by the biodegradable composition. The biodegradable composition includes 50 to 98.9 wt % of a polyolefin resin, 1 to 49.9 wt % of a biodegradable polymer and 0.1 to 5 wt % of an organic degradation aid.

Provided is an elastomer which is suitable for application in actuators or sensors, and which exhibits an appropriately low initial elastic modulus in a low deformation region.

An elastomer composition containing the following components (A) to (D):

component (A): a polyrotaxane;

component (B): a crosslinking agent containing a second linear molecule having a molecular weight of 1,200 to 7,000, and a functional group disposed at both ends of the second linear molecule;

component (C): a double-reactive component having a reactive group at both ends; and

component (D): a single-reactive component having a reactive group at only one end, wherein at least a portion of the functional group in the component (B) is directly or indirectly bonded to the cyclic molecule in the component (A), and the elastomer composition exhibits an initial elastic modulus of 0.6 to 2 MPa.