A breathable water resistant film includes a substrate and a nanofiber layer disposed on the substrate. The nanofiber layer is formed by an electrospinning process. An electrospinning solution used in the electrospinning process includes a first additive, an alcohol, and a second additive. The first additive includes nylon copolymer, and the second additive includes polysilazane.

Described herein are nanofibers and methods for making nanofibers that include any one or more of (a) a non-homogeneous charge density; (b) a plurality of regions of high charge density; and/or (c) charged nanoparticles or chargeable nanoparticles. In one aspect, the present invention fulfills a need for filtration media that are capable of both high performance (e.g., removal of particle sizes between 0.1 and 0.5 μm) with a low pressure drop, however the invention is not limited in this regard.

A passive intermittent rotating assembly can automatically adjust a part of a cleaning material when the cleaning material cleans a spinning jet each time and that can stably operate in a high-voltage environment. The passive intermittent rotating assembly includes a plurality of first abutment members and second abutment members being arranged respectively at an inner side and outer side of the main wheel along the circumferential direction, and being separated from each other to form gaps for a push portion of a push member to pass through. Each of the first abutment members includes a first inner-side abutment portion and a first outer-side abutment portion provided for abutting against the push portion. Each of the second abutment members includes a second inner-side abutment portion and a second outer-side abutment portion provided for abutting against the push portion.

A network of microfibers are fabricated with a core-shell construction from sustainable materials, where the core includes a phase-change material, such as coconut oil, and the shell includes a biomass, such as cellulose. The microfibers are made via a wet-wet electrospinning process utilizing a coaxial spinneret with an inner conduit and an outer conduit. The biomass and the phase-change material are coaxially extruded into a coagulation bath including a mixture of ethanol and water. The collected microfibers exhibit a beaded structure of PCM aggregates and biomass connecting regions between the aggregates and are effective to aid in the thermoregulation of the immediate environment surrounding the network. The microfibers are suitable for use in a variety of sustainable products such as wearable thermoregulating textiles, wall/ceiling panels, insulation, packaging material, and more.

In an embodiment, a spinning head includes a head main body and a nozzle, and a storage cavity storing a material liquid is formed inside the head main body. The nozzle projects from an outer peripheral surface of the head main body, and an ejection port ejecting a material liquid is formed at a projection end. A flow path communicating with the storage cavity extends through an inside of the nozzle to the ejection port. The ejection port is located on an upper side of a vertical direction relative to the connecting part to the storage cavity, and at least a part of the flow path is tilted relative to a horizontal plane. An upper end of the connecting part of the flow path to the storage cavity is located at the same height as or on the upper side relative to an upper end of the storage cavity.

An applicator is disclosed for applying a treatment solution to a treatment site of a patient. The applicator can include an applicator housing comprising a treatment solution reservoir. A cartridge can be removably disposed in the housing. The cartridge when arranged in the housing can be in fluid communication with the treatment solution reservoir. The cartridge can include an electrostatic module for electrostatically charging the treatment solution in the treatment solution reservoir; and a nozzle for applying the treatment solution.

An electrode system for use in an AC-electrospinning process comprises an electrical charging component electrode and at least one of an AC field attenuating component and a precursor liquid attenuating component. The electrical charging component electrode is electrically coupled to an AC source that places a predetermined AC voltage on the electrical charging component electrode. In cases in which the electrode system includes the AC field attenuating component, it attenuates the AC field generated by the electrical charging component electrode to better shape and control the direction of the fibrous flow. In cases in which the electrode system includes the precursor liquid attenuating component, it serves to increase fiber generation, even if the top surface of the liquid precursor is not ideally shaped or is below a rim or lip of the reservoir that contains the liquid on the electrical charging component electrode.

Lithium ion batteries, electrodes, nanofibers, and methods for producing same are disclosed herein. Provided herein are batteries having (a) increased energy density; (b) decreased pulverization (structural disruption due to volume expansion during lithiation/de-lithiation processes); and/or (c) increased lifetime. In some embodiments described herein, using high throughput, water-based electrospinning process produces nanofibers of high energy capacity materials (e.g., ceramic) with nanostructures such as discrete crystal domains, mesopores, hollow cores, and the like; and such nanofibers providing reduced pulverization and increased charging rates when they are used in anodic or cathodic materials.

A method for forming an ultra-high temperature (UHT) composite structure includes dispensing a first polymeric precursor with a spinneret; forming a first plurality of nanofibers from the first polymeric precursor; depositing the first plurality of nanofibers with a collector; and applying a fluid, with a nozzle, onto the first plurality of nanofibers disposed on the collector. The fluid includes a second polymeric precursor.

The system for nano-coating a substrate (10) includes a housing (12) having an upper, dispensing chamber (18) in which electrospraying or electrospinning can occur, a lower storage chamber, and a wall (16) that separates the dispensing chamber (18) from the storage chamber. The dispensing chamber (18) includes first and second panels (24a), (24b) and a moveable collector (20) between the first and second panels (24a), (24b). Solution dispensing nozzles (26) are disposed in apertures (45) in the panels (24a), (24b), and extend from a front surface of each panel (24a), (24b). A plurality of solution supply tubes (54) extend from a rear surface of each panel (24a), (24b) to a pump (34) in the lower housing. Inner panel channels (52) are defined within each panel (24a), (24b) between the tubes (54) and the nozzles (26).