An isocyanate prepolymer composition and a crosslinked thermoplastic polyurethane composition are disclosed, preferably in the form of a fiber. Also disclosed is the process for preparing said prepolymer composition and crosslinked thermoplastic polyurethane. Both of the isocyanate prepolymer composition and crosslinked thermoplastic polyurethane show improved properties.

One embodiment of the present disclosure provides a spinning pack, a yarn manufacturing apparatus including the spinning pack, a yarn manufacturing method using the yarn manufacturing apparatus, and yarn manufactured by the manufacturing method. The spinning pack includes a spinneret having a nozzle unit, a heating unit for heating the nozzle unit, a pack body surrounding at least a part of the spinneret, and a spinning block surrounding the pack body, wherein the spinneret includes a first surface which defines a storage space while facing at least one surface of the spinning block, and a second surface facing the first surface, wherein the nozzle unit includes a plurality of discharge holes and protrudes from the second surface; and wherein the heating unit is disposed at the outer side of the nozzle unit.

One embodiment of the present disclosure provides a spinning pack, a yarn manufacturing apparatus including the spinning pack, a yarn manufacturing method using the yarn manufacturing apparatus, and yarn manufactured by the manufacturing method. The spinning pack includes a spinneret having a nozzle unit, a heating unit for heating the nozzle unit, a pack body surrounding at least a part of the spinneret, and a spinning block surrounding the pack body, wherein the spinneret includes a first surface which defines a storage space while facing at least one surface of the spinning block, and a second surface facing the first surface, wherein the nozzle unit includes a plurality of discharge holes and protrudes from the second surface; and wherein the heating unit is disposed at the outer side of the nozzle unit.

In one aspect, the disclosure relates to multi-material fibers capable of distributedly measuring temperature and pressure in which the methods comprise a thermal drawing step, and the methods of fabricating the disclosed fibers. The fibers can be utilized in methods of temperature and pressure mapping or sensing comprising electrical reflectometry for interrogation. Further disclosed are devices comprising a disclosed fiber with the multi-point detection capability with simple one-end connection. Also disclosed are articles, e.g., smart clothing, wound dressing, robotic skin and other industrial products, comprising a disclosed fiber or a fabric comprising a disclosed fiber. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

Provided is a melt-blown nonwoven fabric including a propylenic polymer that shows at least one peak top at a position of a molecular weight of 20,000 or higher and at least one peak top at a position of a molecular weight of less than 20,000 in a discharge curve obtained by gel permeation chromatography, that has an intrinsic viscosity [] of from 0.35 dl/g to 0.50 dl/g.

Provided is a melt-blown nonwoven fabric including a propylenic polymer that shows at least one peak top at a position of a molecular weight of 20,000 or higher and at least one peak top at a position of a molecular weight of less than 20,000 in a discharge curve obtained by gel permeation chromatography, that has an intrinsic viscosity [] of from 0.35 dl/g to 0.50 dl/g.

A medical device including a plasma-treated porous substrate that is functionalized to provide a hydrophilic surface, and a process for preparing such a medical device, are disclosed. The method includes plasma treating at least a portion of a surface of a porous substrate with a gas species selected from oxygen, nitrogen, argon, and combination thereof. The gas species is configured to functionalize the surface of the medical device and form a hydrophilic surface.

A medical device including a plasma-treated porous substrate that is functionalized to provide a hydrophilic surface, and a process for preparing such a medical device, are disclosed. The method includes plasma treating at least a portion of a surface of a porous substrate with a gas species selected from oxygen, nitrogen, argon, and combination thereof. The gas species is configured to functionalize the surface of the medical device and form a hydrophilic surface.

Systems, devices, and methods for electro spinning are provided. For example, a system includes a collector including load sensors attached thereto, the collector configured to receive an extruded polymer; and an electro spinning melt head assembly positioned above the collector and configured to extrude the polymer. The electro spinning melt head assembly and/or the collector is configured to move. The melt head assembly includes a syringe assembly and at least one heating element configured to supply heat to the syringe assembly. The syringe assembly includes: a syringe including a passage extending from a proximal end, the passage configured to receive the polymer, and a nozzle configured to allow polymer to pass therethrough.

Systems, devices, and methods for electro spinning are provided. For example, a system includes a collector including load sensors attached thereto, the collector configured to receive an extruded polymer; and an electro spinning melt head assembly positioned above the collector and configured to extrude the polymer. The electro spinning melt head assembly and/or the collector is configured to move. The melt head assembly includes a syringe assembly and at least one heating element configured to supply heat to the syringe assembly. The syringe assembly includes: a syringe including a passage extending from a proximal end, the passage configured to receive the polymer, and a nozzle configured to allow polymer to pass therethrough.