A polysulfone has sulfone units that are separated by alkylene units in a polymer chain or a copolymer chain where the alkylene units have at least four carbons between sulfone units. The alkylene units can include an ethenylene unit separated from the sulfone units by at least one methylene units. The polysulfones can be crosslinked for enhanced thermal stability. Membranes can be formed from the polysulfones.

A crosslinked embolic hydrogel is disclosed, the crosslinked embolic hydrogel comprising a hydrophilic polymer functionalized with first reactive groups and a crosslinking agent functionalized with second reactive groups; wherein the first and second reacting groups comprise a biorthogonally reactive pair that react to form the crosslinked embolic hydrogel. Methods and systems are also disclosed.

A fiber structural body includes fibers and a fibroin which binds the fibers, and when the fibers are represented by A, and the fibroin is represented by B, the following formulas (1) and (2) are satisfied.

0.03volume average particle diameter of B/average width of A in short direction4.00(1)

0.01dry mass of B with respect to total mass of fiber structural body/(dry mass of A with respect to total mass of fiber structural body+dry mass of B with respect to total mass of fiber structural body)0.40(2)

A rubber composition contains: at least one rubber component selected from the group consisting of an ethylene propylene diene rubber, a chloroprene rubber, a nitrile rubber, and an acrylic rubber; 1.5 to 30 parts by mass of a fluorene-modified cellulose nanofiber per 100 parts by mass of the rubber component; and 30 to 120 parts by mass of a carbon-based filler per 100 parts by mass of the rubber component. A method of producing a rubber composition comprises: kneading a dispersion of a fluorene-modified cellulose nanofiber in a process oil and a rubber component to prepare a kneaded material; and mixing a vulcanizing agent into the kneaded material.

Silicone-containing adhesive layer formed by cyclic ring-opening polymerization and comprising amounts of an organic base and bonding a wavelength converting layer to a thickness of sapphire in a light-emitting diode (LED) apparatus. Methods enabling its uninhibited curing so as to achieve contaminant-free and debris-free adhesion between surfaces. LED apparatus designed and manufactured such that surfaces to be bonded together are prepared in a manner that facilitates use of high-refractive-index adhesives. A multi-step process involving two different concentrations of a catalyst is performed so as to fabricate highly-reliable, non-browning, and non-cracking high-refractive-index adhesives for light-emitting diode component fabrication.

The invention relates to silane mixtures comprising a silane of the formula I

(R.sup.1).sub.y(R.sup.2).sub.3-ySiR.sup.3(SR.sup.4).sub.nS.sub.xR.sup.5(I)

and a silane of the formula II

(R.sup.1).sub.y(R.sup.2).sub.3-ySiR.sup.3SR.sup.4SR.sup.3Si(R.sup.1).sub.y(R.sup.2).sub.3-y(II)

where the molar ratio of silane of the formula I to silane of the formula II is 15:85-90:10.

The silane mixture according to the invention can be prepared by mixing the silanes of the formula I and silanes of the formula II.

According to one embodiment, a system for manufacturing a polymethyl methacrylate (PMMA) prepreg includes a mechanism for continuously moving a fabric or mat and a resin application component that applies a methyl methacrylate (MMA) resin to the fabric or mat. The system also includes a press mechanism that presses the fabric or mat during the continuous movement subsequent to the application of the MMA resin to ensure that the MMA resin fully saturates the fabric or mat. The system further includes a curing oven through which the fabric or mat is continuously moved. The curing oven is maintained at a temperature of between 40 C. and 100 C. to polymerize the MMA resin and thereby form PMMA so that upon exiting the curing oven, the fabric or mat is fully impregnated with PMMA.

An aerogel carrying an active material, and a composite of a hydrogel and the aerogel are provided. The method for preparing the composite according to the present invention comprises the steps of preparing a plurality of aerogel particles having an active material in the pores, preparing a polymer solution in which a polymer is dissolved in a water-soluble solvent, preparing an aerogel/polymer dispersion by homogenizing after mixing the aerogel particles in the polymer solution, and preparing an aerogel/hydrogel composite carrier by mixing the dispersion with a crosslinking agent solution. According to the present invention, by producing a hydrogel composite in which a plurality of aerogel particles is distributed, a complex carrier in which oil and moisture can be carried simultaneously without any surfactant can be provided. Furthermore, a composite carrier having improved properties such as low density, high strength, high component content and stable desorption can be prepared.

The present disclosure relates to hypercrosslinked magnetic particle with a polymer matrix and at least one magnetic core (M), wherein the polymer matrix has at least one crosslinked polymer having at least one hypercrosslinking bond, wherein the hypercrosslinking bond is a molecule having at least two nitrogen atoms within its structure which are part of the hypercrosslinking bond; and having at least one positive charge. Further, the disclosure relates to a method of preparing the hypercrosslinked magnetic particle and also to hypercrosslinked magnetic particle obtained or obtainable from the method. Also described is the use of the hypercrosslinked magnetic particles for enrichment or purification of at least one analyte as well as to the use of the hypercrosslinked magnetic particles for purification of water.

An interpenetrating network (IPN) polymer membrane material includes a soft polyurethane interspersed with a crosslinked conducting polymer. The material can be reversibly switched between its oxidized and reduced states by the application of a small voltage, 1 to 4 volts, thus modulating its diffusivity.