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.

Degradation process of mixtures of waste plastic polymeric material containing halogenated polymers comprising the steps of: a) melting said plastic material at T>200° C. and ≤220° C.; b) dehalogenating the molten mixture by production of gaseous halogenidric acid from the previous step (a) at T between 300 and 410° C., preferably between 320 and 380° C.: c) degrading the dehalogenated mixture from step (b) at a temperature between 410° C. and 500° C. and with retention times >5 minutes and ≤ 20 minutes, wherein the reaction products mainly comprise low boiling hydrocarbons, and in lesser extent hydrogen, naphtha, gasoline, jet fuel, diesel, heavy oils, residues.

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 m.

A method of producing hydrocarbon from a subterranean formation comprises: disposing an article in a well penetrating a subterranean formation, the article having a surface coated with a hierarchical superhydrophobic coating or the article being a stand-alone hierarchical superhydrophobic membrane; contacting the article with a flow of a water-based fluid and an oil-based fluid; selectively impeding the flow of the water-based fluid; and allowing the production of the oil-based fluid.

Microporous material having a spherulitic matrix made from ethylene chlorotrifluoroethylene copolymer has a plurality of pores having an average pore size greater than about 0.01 micrometer. The material is made by thermally induced phase separation (TIPS) process that includes melt mixing ethylene chlorotrifluoroethylene copolymer, diluent and nucleating agent to provide a melt mixed composition; shaping the melt mixed composition; cooling the shaped melt mixed composition to induce phase separation of the ethylene chlorotrifluoroethylene copolymer to provide a phase separated material; and stretching the phase separated material to provide the microporous material. The microporous material may be incorporated into articles and the articles may include one, two or more layers of microporous material.

A liquid composition comprising at least one aprotic organic solvent and at least one fluorinated ion exchange polymer which consists of recurring units derived from a chlorofluoroolefin of formula CF.sub.2CCIY, wherein Y is F or CI, and from at least one fluorinated functional monomer selected among those of formula CF.sub.2CFO(CF.sub.2CF(CF.sub.3)O).sub.m(CF.sub.2).sub.nSO.sub.2X, wherein m is an integer equal to 0 or 1, n is an integer from 0 to 10 and X is chosen among halogens (CI, F, Br, I), O.sup.M.sup.+, wherein M.sup.+ is a cation selected among H.sup.+, NH.sub.4.sup.+, K.sup.+, Li.sup.+, Na.sup.+, or mixtures thereof is disclosed. The liquid composition is suitable for the preparation of ion exchange membranes, in particular composite membranes, for use in fuel cell applications.

A method of producing hydrocarbon from a subterranean formation comprises: disposing an article in a well penetrating a subterranean formation, the article having a surface coated with a hierarchical superhydrophobic coating or the article being a stand-alone hierarchical superhydrophobic membrane; contacting the article with a flow of a water-based fluid and an oil-based fluid; selectively impeding the flow of the water-based fluid; and allowing the production of the oil-based fluid.