The present invention describes various aspects of an inexpensive, renewable and sustainable particulate material system which is basically composed of one or more carbon precursor materials and other powder-based constituents. There is also an in-detail description of the composition of the preferred particulate material system and steps involved in manufacturing high-performance carbon composite articles using commercial binder jetting powder-based 3D printers. The preferred particulate material system composition of the present invention can be equal in performance to typical binder jetting 3D printing powders but much less expensive.

The invention relates to a composite material filament having rheological characteristics suitable for use in additive manufacturing by extrusion, a method for manufacturing a three-dimensional composite product with an additive manufacturing system from a filament of such composite material, and to a three-dimensional composite product obtained by an additive manufacturing system using such composite material. The filament is formed of material comprising semi-crystalline polylactic acid and chemical pulp of wood-based cellulose fibres, wherein the amount of chemical pulp of wood-based cellulose fibres is selected such that sufficient complex viscosity is obtained at melt state, such that upon additive manufacturing by extrusion, composite melt formed of the filament has a ratio of shear storage modulus to shear loss modulus G′/G″ equal to or higher than 1.0 at a temperature equal to or higher than 133° C.

A composite material is formed by combining an expandable polymer having a charge with another polymer having an opposite charge to produce. In particular, the composite material can be prepared by combining the polymers with a medium such as and water, and expanding the mixture using a treatment that expands the mixture to produce, for example, insoluble porous foam-like composites.

A resin composition includes cellulose nanofibers (A) and a cellulose ester resin (B) having a polymerization degree of 100 to 500 and a substitution degree of 2.1 to 2.6.

A decking plank includes a non-distressed surface with a first surface texture defining a plurality of wood grain depressions. The plank also includes a distressed surface with a second surface texture defining a plurality of wood grain depressions and a plurality of cross-grain depressions. An outdoor deck may be formed with the dual-sided deck planks. The deck may be constructed in one configuration where each of the dual-sided deck planks has the distressed surface facing upward and exposed. The deck may be constructed in a second configuration where the same planks are assembled to have the non-distressed surface facing upward and exposed.

A natural composition for 3D printing comprising alginate from brown seaweed and cellulose nanofibers, wherein the cellulose nanofibers originate from cellulose from the same brown seaweed sample(s) as the alginate.

The present invention relates to a method of making a foamed cellulosic fiber-thermoplastic composite article. The method includes the steps of providing a copolymer composition, combining the copolymer composition and cellulosic fibers, applying heat, mixing energy and pressure to form a foamable mixture, and forming the foamable article in a molding or extruding operation. The method is characterized in that at least 10% of the cellulosic fibers have been thermally modified prior to being combined with the copolymer composition.

A composite material is formed by combining an expandable polymer having a charge with another polymer having an opposite charge to produce. In particular, the composite material can be prepared by combining the polymers with a medium such as and water, and expanding the mixture using a treatment that expands the mixture to produce, for example, insoluble porous foam-like composite

Provided are devices and methods that combine material anisotropy with nonlinear structural design to produce structures that precisely and sequentially actuate in response to multiple stimuli, such as water or non-polar solvents. These devices and methods can include bistable anisotropic elements that convert to monostable element upon exposure to a particular stimulus, and anisotropic distortions can be harnessed to change the geometric properties of the element to cross phase boundaries and trigger shape changes at precise times. One can incorporate complex logic into these devices and methods.

A method for fabricating a package structure is provided. The method includes premixing cellulose nanofibrils (CNFs) and a two-dimensional (2D) material in a solvent to form a solution; removing the solvent from the solution to form a composite filler; mixing a prepolymeric material with the composite filler to form a composite material; and performing a molding process using the composite material.