A method of foam production is described. The method includes providing a foam precursor including one or more components, the one or more components including at least one of chitin, chitosan, or chitosan oligosaccharide and a solvent. The method further comprises exposing the foam precursor to radiation. The radiation is of a wavelength to heat the foam precursor. A system for foam produced is described, the system including a mixer configured to output a foam precursor including one or more components. The one or more components include at least one of chitin, chitosan, or chitosan oligosaccharide. The system further includes a radiation emitting system positioned to receive the foam precursor from the mixer and expose the foam precursor to radiation to heat the foam precursor to form a solid foam.

The present invention concerns a solid nanocomposite material consisting of a polymer-matrix in which are dispersed alkali metal, hydronium or ammonium salts of polyanionic components, wherein the polymer-matrix comprises at least a linear or branched polymer or copolymer containing one or several poly(ethylene oxide) (PEO) chains, said polymer or copolymer being optionally crosslinked and each PEO chain having at least 4 ethylene oxide monomer units. The present invention relates also to a photonic, e.g. optoelectronic, device comprising such a nanocomposite material. Such material and device can be used as phosphorescence emitter, for crop growth lighting or for generating singlet oxygen.

A stretch film (1) contains an olefin elastomer and an inorganic filler (3). Stress at 50% elongation is 6.0 N or more and 15.0 N or less, and moisture permeability is 1000 g/(m.sup.2.Math.24 h) or more.

Expandable styrene polymers comprising polymeric brominated flame-retardant, wherein the polymeric brominated flame-retardant comprises at least one brominated polybutadiene block having a bromination degree between 33 and 75%, based on the double bonds in the polybutadiene block before bromination, a process for producing such expandable styrene polymers by suspension polymerization and particulate foam moldings made therefrom.

A phenolic foam and method for manufacturing same are described herein. The foam is formed from a foamable phenolic resin composition, and a blowing agent, the phenolic foam comprising 1 to 5% by weight of red phosphorus based on the weight of the phenolic foam wherein said phenolic foam has a density of from 10 kg/m.sup.3 to 100 kg/m.sup.3, a closed cell content of at least 85% as determined in accordance with ASTM D6226 and wherein said foam has a FIGRA.sub.0.2 MJ of 120 W/s or less, when measured according to EN13823 and a thermal conductivity of 0.023 W/m.K or less, at 10° C., in accordance with EN 13166:2012. The foam has excellent thermal insulation performance and excellent fire performance.

A polymer matrix composite includes a porous polymeric network structure; and a plurality of acoustically active particles distributed within the polymeric network structure. The weight fraction of acoustically active particles is between 0.80 and 0.99, based on the total weight of the polymer matrix composite. The polymer matrix composite has an air flow resistance of less than 100 seconds/50 mL/500 μm.

The thermoplastic elastomer composition contains a thermoplastic elastomer and a pigment.

Disclosed is a multi-block copolyester ether thermoplastic elastomer foam prepared from an aromatic polyester compound and contains a short-chain structure, a long-chain structure and a residual functional group of a chain extender. The short-chain structure has both an aromatic dicarboxylic acid ethylene glycol ester block structure and an aromatic dicarboxylic acid butylene glycol ester block structure. The long-chain structure has a polyether diol block structure. Based on 100 parts by weight of the multi-block copolyester ether thermoplastic elastomer foam, a content of the polyether diol block structure is 45 parts by weight to 65 parts by weight. The multi-block copolyester ether thermoplastic elastomer foam has a melting point not higher than 170° C. and a melt flow index less than 20 g/10 min.

A composite material according to the present invention includes a solid portion including inorganic particles and a resin. The composite material has a porous structure including a plurality of voids surrounded by the solid portion. In the composite material, a ratio of a smallest heat conductivity of heat conductivities λ.sub.x, λ.sub.y, and λ.sub.z respectively in x-axis, y-axis, and z-axis directions perpendicular to each other to a largest heat conductivity of the heat conductivities λ.sub.x, λ.sub.y, and λ.sub.z is 0.8 or more.

A composite material according to the present invention includes a solid portion including inorganic particles and a resin. The composite material has a porous structure including a plurality of voids surrounded by the solid portion. In the composite material, a value P.sub.1 determined by the following equation (1) is 6 or more. In the equation (1), a heat conductivity is a value measured for one test specimen in a symmetric configuration according to an American Society for Testing and Materials (ASTM) standard D5470-01. P.sub.1=(the heat conductivity [W/(m.Math.K)] of the composite material/an amount[volume %] of the inorganic particles)×100 Equation (1).