An absorbent article containing a polyolefin film is provided. The polyolefin film is formed by a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.

A polymer matrix composite comprising a porous polymeric network; and a plurality of at least one of polar solvent soluble particles or polar solvent swellable particles distributed within the polymeric network structure; wherein the polymeric network structure is insoluble relative to the soluble particles, wherein the soluble particles are present in a range from 1 to 99 weight percent, based on the total weight of the at least one of soluble particles or swellable particles and the polymer (excluding any solvent); and wherein the polymer matrix composite has particles that at least one of (a) upon exposure to a polar fluid, release at least some component from the polymer matrix composite layer or (b) upon exposure to a polar fluid, absorb some of the polar fluid; and methods for making the same. The polymer matrix composites are useful, for example, in delivery devices comprising the polymer matrix composite, wherein the at least one of soluble particles or swellable particles comprise at least one of an active agent or a released agent.

An aromatic polysulfone resin having a repeating unit represented by Formula (I) and a repeating unit represented by Formula (II), in which a ratio (m:n) of a molar content (m) of the repeating unit represented by Formula (I) to a molar content (n) of the repeating unit represented by Formula (II) is 1:2,000 to 1:200.

##STR00001## wherein hydrogen atoms of phenylene groups of Formulae (I) and (II) may be each independently substituted with an alkyl group, an aryl group, or a halogen atom.

A method of preparing a composite includes providing a porous material including a polymeric network and a polar particle; depositing an ink onto the porous material via a printing process; and delivering a lubricating fluid to the porous material to form a coating. A composite is obtained from the method, and an anti-fouling product including the composite is provided.

A polymer matrix composite comprising a porous polymeric network; and a plurality of endothermic particles distributed within the polymeric network structure, wherein the endothermic particles are present in a range from 15 to 99 weight percent, based on the total weight of endothermic particles and the polymer (excluding any solvent); and wherein the polymer matrix composite has an endotherm of greater than 200 J/g; and methods for making the same. The polymer matrix composites are useful, for example, as a filler, thermal energy absorbers, and passive battery safety components.

Method of making a polymer matrix composite comprising a porous polymeric network structure; and a plurality of particles distributed within the polymeric network structure, the method comprising: combining a thermoplastic polymer, a solvent that the thermoplastic polymer is soluble in, and a plurality of particles to provide a slurry; forming the slurry in to an article; heating the article in an environment to retain at least 90 percent by weight of the solvent, based on the weight of the solvent in the slurry, and inducing phase separation of the thermoplastic polymer from the solvent to provide the polymer matrix composite.

A polymer matrix composite comprising a porous polymeric network; and a plurality of functional particles distributed within the polymeric network structure, and wherein the polymer matrix composite has an air flow resistance at 25 C., as measured by the Air Flow Resistance Test, of less than 300 seconds/50 cm.sup.3/500 micrometers; and wherein the polymer matrix composite has a density of at least 0.3 g/cm.sup.3; and methods for making the same. The polymer matrix composites are useful, for example, as filters.

A polymer matrix composite comprising a porous polymeric network; and a plurality of dielectric particles distributed within the polymeric network structure; wherein the dielectric particles are present in a range from 5 to 98 weight percent, based on the total weight of the dielectric particles and the polymer (excluding the solvent); and wherein the polymer matrix composite has a dielectric constant in a range from 1.05 to 80; and methods for making the same. Polymer matrix composites comprising dielectric particles are useful, for example, as electric field insulators.

A polyolefin packaging film is provided. The polyolefin film is formed by a thermoplastic composition containing a continuous phase that includes a polyolefin matrix polymer and nanoinclusion additive is provided. The nanoinclusion additive is dispersed within the continuous phase as discrete nano-scale phase domains. When drawn, the nano-scale phase domains are able to interact with the matrix in a unique manner to create a network of nanopores.

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.