A separator for an electricity storage device comprising a silane-modified polyolefin, wherein silane crosslinking reaction of the silane-modified polyolefin is initiated when it contacts with the electrolyte solution, as well as a method for producing the separator.

Materials and methods are described herein that include forming a porous polymer network with antimicrobial and antifouling properties. The antifouling portion may be a polymer, such as polyethylene glycol, and the antimicrobial portion may be a metal, or a different cationic species, such as a quaternary ammonium salt. The method generally includes forming a reaction mixture comprising a formaldehyde, a bridging group, and moieties with antifouling and antimicrobial properties.

The present invention relates to a sol composition for forming an aerogel composite, wherein the sol composition is a sol composition with a sufficient pot life for forming an aerogel composite superior in thermal insulation and flexibility, and comprises: at least one selected from the group consisting of a silicon compound having a hydrolyzable functional group or a condensable functional group and a hydrolysis product of the silicon compound having a hydrolyzable functional group; and a silica particle having an average primary particle diameter of 5 to 300 nm or a specific surface area of 10 to 600 m.sup.2/g.

A semicrystalline poly ketone powder useful for additive manufacturing may be made by dissolving a polyketone having differential scanning calorimetry (DSC) monomodal melt peak, at a temperature above 50? C. to below the melt temperature of the polyketone, precipitating the dissolved polyketone by cooling, addition of a nonsolvent or combination thereof. The method may be used to form polyketones having a DSC melt peak with an enthalpy greater than the starting polyketone.

Materials and methods are described herein that include forming a porous polymer network with antimicrobial and antifouling properties. The antifouling portion may be a polymer, such as polyethylene glycol, and the antimicrobial portion may be a metal, or a different cationic species, such as a quaternary ammonium salt. The method generally includes forming a reaction mixture comprising a formaldehyde, a bridging group, and moieties with antifouling and antimicrobial properties.

A semicrystalline poly ketone powder useful for additive manufacturing may be made by dissolving a polyketone having differential scanning calorimetry (DSC) monomodal melt peak, at a temperature above 50 C. to below the melt temperature of the polyketone, precipitating the dissolved polyketone by cooling, addition of a nonsolvent or combination thereof. The method may be used to form polyketones having a DSC melt peak with an enthalpy greater than the starting polyketone.

An object of the present invention is to provide a porous material (resin composition) having high heat insulation properties, mechanical properties, and electrical properties by controlling function of a porous film by setting a porosity size, distribution of the porosity size, and a porosity ratio of the porous film in predetermined ranges. The resin composition according to the present invention is comprised of an engineering plastic having porous structure in which not less than 80% of a total porosity is comprised of independent porosities, a mean porosity size is not less than 0.01 m and not more than 0.9 m, and not less than 80% of the total porosity has a porosity size within 30% of the mean porosity size.

In one instance a semicrystalline polyketone powder useful for additive manufacturing is comprised of a bimodal melt peak determined by an initial differential scanning calorimetry (DSC) scan at 20 C./min and a D.sub.90 particle size of at most 300 micrometers and average particle size of 1 micrometer to 150 micrometers equivalent spherical diameter. In another instance, A composition is comprised of a semicrystalline polyketone powder having a melt peak and a recrystallization peak, wherein the melt peak and recrystallization peak fail to overlap.

A hydrogel based on a cross-linked -polyglutamic acid and -polylysine polymer is obtained by cross-linking of -polyglutamic acid with -polylysine, and it is a polymer having the following constitutional unit, wherein, m is a natural number of 15 to 45, n is a natural number of 3900 to 17000, and x is a natural number of 5 to 40. It also discloses a preparation method of as-described hydrogel and its application in preparation as a medical wound dressing.

In one instance a semicrystalline polyketone powder useful for additive manufacturing is comprised of a bimodal melt peak determined by an initial differential scanning calorimetry (DSC) scan at 20 C./min and a D.sub.90 particle size of at most 300 micrometers and average particle size of 1 micrometer to 150 micrometers equivalent spherical diameter. In another instance, A composition is comprised of a semicrystalline polyketone powder having a melt peak and a recrystallization peak, wherein the melt peak and recrystallization peak fail to overlap.