Disclosed herein are solutions comprising at least a caustic solvent, alpha-glucan or a derivative thereof, and an additive. An additive can include a crosslinking agent, and/or optionally an additive that does not chemically react with the alpha-glucan or derivative thereof. At least about 50% of the glycosidic linkages of the alpha-glucan can be alpha-1,3 glycosidic linkages. Methods are further disclosed for preparing these solutions and using them to produce various solid compositions, which are also disclosed.

The present invention relates to a bioenergetic mixed twisted filament and its uses, including bioenergetic yarns, bioenergetic woven fabric, and products manufactured using the bioenergetic mixed twisted filament. The bioenergetic mixed twisted filament comprises a first filament and a second filament twisted with each other. The first filament comprises a first polymer matrix and nanoparticles dispersed within the first polymer matrix. The nanoparticles comprise element(s) selected from the group consisting of Au, Ag, Ti, Ge, Zn, Al, Mg, Si, Cu, Ca, Fe, Ba, K, Na, Mn, Ni, Ga, Pt, and combinations thereof. The second filament has a material different from that of the first filament.

The present disclosure relates to the research field of functionalized membrane materials and their preparation methods, in particular to a double-layer functionalized hollow fiber membrane and a preparation method thereof. The present disclosure provides a preparation method for a double-layer functionalized hollow fiber membrane, including preparation of the casting solutions, transverse extrusion casting solution, longitudinal stretching, the first coagulation bath, the second coagulation bath, and the third coagulation bath. The double-layer functionalized hollow fiber membrane prepared by the present disclosure has a double-functionalized layer structure with a dense cortical antibacterial layer and a macroporous structure adsorption layer. The double-layer functionalized hollow fiber membrane not only has the function of separation and purification, but also has the function of bacteriostasis and adsorption. The double-layer functionalized hollow fiber membrane has high strength, the wire is not easy to break, and it has a wide application field.

The present disclosure relates to a method for manufacturing an elastic yarn by melt spinning by means of a spinning machine including an extruder and a spin pack comprising at least one die, the method comprising at least the following steps: a preliminary cold drawing of the yarn at the outlet of the die, followed by a hot drawing of the yarn then by a cold drawing of the yarn. The present disclosure also relates to a textile comprising such an elastic yarn and to a plant configured to implement this method.

The present disclosure relates to a spinning beam for producing hollow fiber membranes in a phase inversion process, and to a process using the spinning beam.

Fibrous structures having improved surface smoothness, good wet feel, and are cold water soluble.

The present invention is directed to eyectrochromic, supercapacitor yarns and the related fabrics. An electrochromic yarn formed by two interwind threads has been invented. The yarn is electrically isolated by a transparent, uncolored polymer. Each thread is the superposition of three concentric layers. The most internal one, the core, has the function of support and/or conductive layer, the second one is the eiectrochromic layer containing conductive nanoparticies, the third layer is a polymer dielectric blend. The yarns described above allows to generate electrochromic fabrics in which the colour can be varied by the application of small electric voltages fed by a battery with variable power supply controlled by a microprocessor connected to a smartphone via Bluetooth technology. A specific application on the smartphone allows to change the voltage supply to the fabrics, in order to get the desired chromatic change.

The present invention relates to fiber jamming systems capable of tuning tensile stiffness of soft systems within seconds without the use of high voltage or temperature changes. The systems employ segmented fibrils of interspersed segments of stretchable and non-stretchable materials. Applying a vacuum to the fibrils in an enclosed volume elicits a large interfacial shear resistance to tensile displacement. In the absence of a vacuum, the fibrils are free to stretch and bend in any direction.