A method for making and a resultant paper test strip product for detecting Zika antibodies indicating the presence of Zika virus in a patient sample. The paper test strip includes a strip of filter paper; and a silk fibroin solution applied to the strip of filter paper wherein the silk fibroin solution is mixed with an enzyme solution in phosphate buffered saline buffer.

A method for making and a resultant paper test strip product for detecting Zika antibodies indicating the presence of Zika virus in a patient sample. The paper test strip includes a strip of filter paper; and a silk fibroin solution applied to the strip of filter paper wherein the silk fibroin solution is mixed with an enzyme solution in phosphate buffered saline buffer.

A method for preparing a high fluffiness down by multiple treatments with metal salts includes: degreasing a down sample with a degreasing agent; washing the down sample with water; oxidizing the down sample with an oxidizing agent; washing the down sample with water; conducting a first crosslinking treatment with basic zirconium sulfate; washing the down sample with water; conducting a second crosslinking treatment with basic aluminum sulfate; washing the down sample with water; and drying the down sample to obtain the high fluffiness down.

The invention is directed to a method for producing a composite material comprising a biofabricated material and a secondary component. The secondary component may be a porous material, such as a sheet of paper, cellulose, or fabric that has been coated or otherwise contacted with the biofabricated material. The biofabricated material comprises a uniform network of crosslinked collagen fibrils and provides strength, elasticity and an aesthetic appearance to the composite material.

The invention is directed to a method for producing a composite material comprising a biofabricated material and a secondary component. The secondary component may be a porous material, such as a sheet of paper, cellulose, or fabric that has been coated or otherwise contacted with the biofabricated material. The biofabricated material comprises a uniform network of crosslinked collagen fibrils and provides strength, elasticity and an aesthetic appearance to the composite material.

The invention discloses a wool raw wool washing device for chemical fiber production, which includes a washing machine. The washing machine is provided with a working cavity. A front end wall of the working cavity is provided with a storage cavity with an upward opening. The wool raw wool is installed in the washing machine. Two dispersing mechanisms are symmetrically arranged in the working cavity in the storage cavity, and the dispersing mechanism includes a connecting shaft rotatably connected to the rear wall of the working cavity. A rotating wheel is fixed at the front end of the connecting shaft. The connecting shaft is provided with a collar that can slide back and forth, and the rotating wheel is provided with a slidable dispersing rod. The rotation of the connecting shaft can drive the rotating wheel to rotate, and the device can disperse the raw wool in the lump. After washing into small balls, it has a high washing efficiency, and by dispersing into small balls, it helps to discharge the stones and branches in the wool, and has a good washing effect. The overall mechanical linkage of the device is relatively good, High, more energy efficient.

The invention discloses a wool raw wool washing device for chemical fiber production, which includes a washing machine. The washing machine is provided with a working cavity. A front end wall of the working cavity is provided with a storage cavity with an upward opening. The wool raw wool is installed in the washing machine. Two dispersing mechanisms are symmetrically arranged in the working cavity in the storage cavity, and the dispersing mechanism includes a connecting shaft rotatably connected to the rear wall of the working cavity. A rotating wheel is fixed at the front end of the connecting shaft. The connecting shaft is provided with a collar that can slide back and forth, and the rotating wheel is provided with a slidable dispersing rod. The rotation of the connecting shaft can drive the rotating wheel to rotate, and the device can disperse the raw wool in the lump. After washing into small balls, it has a high washing efficiency, and by dispersing into small balls, it helps to discharge the stones and branches in the wool, and has a good washing effect. The overall mechanical linkage of the device is relatively good, High, more energy efficient.

A polar solvent solution of the present invention is a polar solvent solution in which a solute containing a polyamine acid is dissolved in a polar solvent. The solution has a moisture content of less than 5 mass % based on 100 mass % of the solution. A method for producing a polar solvent solution of the present invention includes changing a moisture content of the solution to adjust the viscosity of the solution. Further, another method for producing a polar solvent solution includes reducing a moisture content of the solution to increase the viscosity of the solution. Thus, the present invention provides a polar solvent solution that enables stable spinning and casting without lowering its viscosity when used as dopes for spinning, film, etc., and methods for producing the same.

A polar solvent solution of the present invention is a polar solvent solution in which a solute containing a polyamine acid is dissolved in a polar solvent. The solution has a moisture content of less than 5 mass % based on 100 mass % of the solution. A method for producing a polar solvent solution of the present invention includes changing a moisture content of the solution to adjust the viscosity of the solution. Further, another method for producing a polar solvent solution includes reducing a moisture content of the solution to increase the viscosity of the solution. Thus, the present invention provides a polar solvent solution that enables stable spinning and casting without lowering its viscosity when used as dopes for spinning, film, etc., and methods for producing the same.

A chemically modified cellulose/alginate co-spun (seacell) fiber, a wound dressing made therefrom and a preparation method thereof. The seacell fiber is subject to a chemical modification through which a hydrophilic carboxymethyl group is introduced into the cellulose structure making the chemically modified seacell fiber more absorbent. The modified cellulose has a degree of substitution of 0.05-0.5; the seacell fiber has a linear density of 0.5-5 dtex and a fiber length of 5-180 mm. The seacell fiber has hygroscopic and gel-forming properties, while retaining its active ingredient of algae particles.