The present invention relates to stable catalyst ink formulations comprising am electrospinning polymer selected from halogen-comprising polymers. The present invention further relates to electrospinning of such ink formulation, to the so-obtained electrospun fibrous mat as well as to articles comprising such electrospun fibrous mat.

The present invention relates to stable catalyst ink formulations comprising am electrospinning polymer selected from halogen-comprising polymers. The present invention further relates to electrospinning of such ink formulation, to the so-obtained electrospun fibrous mat as well as to articles comprising such electrospun fibrous mat.

Provided is a manufacturing method of a graphene-based liquid crystal fiber including: polymerizing a first aromatic monomer on a graphene-based compound to prepare a graphene composite in which a first aromatic polymer is surface-polymerized on the graphene-based compound; wet-spinning the graphene composite to manufacture a hydrogel fiber; and polymerizing a second aromatic monomer on the hydrogel fiber to fill pores of the hydrogel fiber with a second aromatic polymer.

A method for preparing an ultra-fine and uniform acrylamide-based polymer hydrogel filament. The method comprises: formulating a reaction solution of acrylamide-based polymer under ice bath conditions, and drawing the reaction solution into a reaction tube by a syringe; parabolically bending the two ends of the reaction tube upward; hanging the reaction tube for 2 h-8 h, and performing a baking reaction to obtain an acrylamide-based polymer hydrogel; vacuum drying the reaction tube for 4 h-8 h to obtain a dry filament of acrylamide-based polymer; cutting the reaction tube to obtain a plurality of short polymerization tubes having a preset length; pushing the dry filament of acrylamide-based polymer out of the short tube by a stainless steel wire; purifying same in a soaking solution to obtain an expanded filament of acrylamide-based polymer; and drying same to obtain a acrylamide-based polymer hydrogel filament having a preset external diameter.

A method for preparing an ultra-fine and uniform acrylamide-based polymer hydrogel filament. The method comprises: formulating a reaction solution of acrylamide-based polymer under ice bath conditions, and drawing the reaction solution into a reaction tube by a syringe; parabolically bending the two ends of the reaction tube upward; hanging the reaction tube for 2 h-8 h, and performing a baking reaction to obtain an acrylamide-based polymer hydrogel; vacuum drying the reaction tube for 4 h-8 h to obtain a dry filament of acrylamide-based polymer; cutting the reaction tube to obtain a plurality of short polymerization tubes having a preset length; pushing the dry filament of acrylamide-based polymer out of the short tube by a stainless steel wire; purifying same in a soaking solution to obtain an expanded filament of acrylamide-based polymer; and drying same to obtain a acrylamide-based polymer hydrogel filament having a preset external diameter.

The present invention relates to a method for preparing electrospun fibers, the method comprising v) dissolving a fiber-forming hydrophilic polymer in an alcohol selected from C1-C3 alcohols, vi) dissolving a bioadhesive substance in water, wherein the bioadhesive substance has a solubility in water of 3 g/100 ml or more at 25? C. or g/100 ml or more at 25? C., and wherein the bioadhesive substance has a solubility in an alcohol selected from C1-C3 alcohols of 0.5 g/100 nil 10 or less at 25? C. or 0.1 g/100 ml or less at 25? C., vii) adding under stirring the resulting solution from ii) to the resulting solution from i), whereby the bioadhesive substance precipitates and a homogeneous suspension is formed, wherein the bioadhesive substance is suspended as particles, and viii) electrospinning the homogeneous suspension to obtain hydrophilic fibers.

The present invention relates to a method for preparing electrospun fibers, the method comprising v) dissolving a fiber-forming hydrophilic polymer in an alcohol selected from C1-C3 alcohols, vi) dissolving a bioadhesive substance in water, wherein the bioadhesive substance has a solubility in water of 3 g/100 ml or more at 25? C. or g/100 ml or more at 25? C., and wherein the bioadhesive substance has a solubility in an alcohol selected from C1-C3 alcohols of 0.5 g/100 nil 10 or less at 25? C. or 0.1 g/100 ml or less at 25? C., vii) adding under stirring the resulting solution from ii) to the resulting solution from i), whereby the bioadhesive substance precipitates and a homogeneous suspension is formed, wherein the bioadhesive substance is suspended as particles, and viii) electrospinning the homogeneous suspension to obtain hydrophilic fibers.

Provided are polyketone toothbrush bristles and a toothbrush comprising the same. The toothbrush bristles are made using a polyketone material having high rigidity, high elasticity and excellent wear resistance and thus shows reduced bristle gap-widening and increased service life. The toothbrush bristles obtained by using the polyketone according to the present disclosure have excellent elasticity and are suitable for removal of plaque on the severely indented tooth surfaces. Particularly, in the case of fine bristles, it is possible to remove interdental plaque, which, otherwise cannot be removed well by the conventional toothbrushes.

The invention provides a fiber containing (A) a polymer compound containing a structural unit having, in a side chain, at least one kind of organic group selected from a hydroxy group, a hydroxymethyl group and an alkoxymethyl group having 1-5 carbon atoms, and (B) a photoacid generator.

The invention provides a fiber containing (A) a polymer compound containing a structural unit having, in a side chain, at least one kind of organic group selected from a hydroxy group, a hydroxymethyl group and an alkoxymethyl group having 1-5 carbon atoms, and (B) a photoacid generator.