The invention provides a biomass-based hyperbranched adsorption material with multi-adsorption sites to multiple heavy metal ions and a preparation method thereof. The biomass-based hyperbranched adsorption material with multi-adsorption sites to multiple heavy metal ions is prepared by one-step instant-crosslinking method using a biomass raw material as matrix and a hyperbranched polymer containing chelating atoms of N, O, and S as functional reagent, wherein the hyperbranched polymer has two or more different adsorption sites (containing elements such as N, S, O, etc.) to heavy metal ions.

The present disclosure provides an ethylene oxide sterilization sensor and method of use. The sensor includes: at least one thermal indicator component independently selected from an electronic thermal sensor, an irreversible temperature indicator, and a heat-shrinkable film; an acid-functional porous sorbent or an acid-functional nonwoven fibrous substrate in thermal contact with the at least one thermal indicator component; and an acid having a boiling point above 120° C. and a pKa of no greater than 2.5. The acid is impregnated in or covalently attached to the porous sorbent or is covalently attached to the nonwoven fibrous substrate. The sensor includes at least one of the electronic thermal sensor, the irreversible temperature indicator, or the acid-functional nonwoven fibrous substrate.

A process for forming a composite absorbent structure by advancing a nonwoven web including from 20% to 100% by weight of superabsorbent fibers. Superabsorbent particles may be distributed to the nonwoven web and at least some of the superabsorbent particles may be drawn into void spaces of the nonwoven web to form the composite absorbent structure. The composite absorbent structure may include a nonwoven web comprising from 20% to 100% by weight of superabsorbent fibers, and the superabsorbent particles may be distributed heterogeneously into void spaces within the nonwoven web. The composite absorbent structure may be used in an absorbent article.

An object of the present invention is to provide a ligand-immobilized sea-island composite fiber in which generation of fine particles due to peeling of a sea component from an island component and generation of fine particles due to destruction of a fragile sea component are both suppressed. The present invention provides a sea-island composite fiber comprising a sea component and island components, in which a value (L/S) obtained by dividing the average total length (L) of the perimeter of all island components in a cross section perpendicular to the fiber axis by the average cross-sectional area (S) of the cross section is from 1.0 to 50.0 μm.sup.−1, a distance from the surface to the outermost island component is 1.9 μm or less, and an amino group-containing compound is covalently bonded to a polymer constituting the sea component at a charge density of 0.1 μmol or more and less than 500 μmol per 1 gram dry weight.

The present invention relates to a method for preparing a macromolecular composition comprising indene-derivatives. The invention also relates to the macromolecular compositions per se, and to methods of using the macromolecular compositions. The macromolecular compositions are useful for undergoing subsequent reactions with small molecules.

Polymer sorbents selectively remove cytokines and bacterial endotoxins from whole blood and other body liquids, in particular blood plasma, lymph etc., as well as from aqueous protein solutions and aqueous organic compound solutions, also containing inorganic salts. The sorbent is able to remove both cytokines and bacterial endotoxins, improve selectivity of the polymer sorbents in respect to the compounds as well as provide a simple and effective method of producing said sorbent.

In various embodiments, the present disclosure pertains to organic polymer core-shell particles that comprise a non-porous organic polymer core (i.e., having a pore volume of less than 0.1 cc/g) and a porous organic polymer shell (i.e., having a pore volume of greater than 0.1 cc/g), in which the porous organic polymer shell has a pore size ranging from 100 Å to 3000 Å. In some embodiments, the present disclosure pertains to chromatographic separation devices that comprise such organic polymer core-shell particles. In some embodiments, the present disclosure pertains to chromatographic methods that comprise: (a) loading a sample onto a chromatographic column comprising such organic polymer core-shell particles and (b) flowing a mobile phase through the column.

The present invention relates to a method and apparatus for providing and/or receiving audible sound. In particular, the invention relates to apparatus, such as a micro speaker, which includes an active region which comprises an adsorbent element in the form of a self-supporting monolith-like element with a porous reticulated structure. The adsorbent element includes adsorbent material which comprises microporous organic polymer (MOP) material. The apparatus of the present invention is suitable for use in an electronic device, for example a mobile or portable electronic device, to provide improved audible sound.

A column for removal of a component from a fluid is disclosed. The column has a compartment with a cross sectional area. The compartment contains beads having a diameter. A ligand selected to bind to the component is coupled to the beads. The cross-sectional area and bead diameter are selected to maintain a flow velocity of the fluid within the compartment below a first threshold, thereby reducing leaching of the ligand into the fluid. Also described herein is an adsorbent comprising a ligand that is attached to a substrate by an amine bond, wherein the ligand is resistant to dissociation from the substrate.

The present invention relates to a method for preparing a macromolecular composition comprising indene-derivatives. The invention also relates to the macromolecular compositions per se, and to methods of using the macromolecular compositions. The macromolecular compositions are useful for undergoing subsequent reactions with small molecules.