Provided herein are methods of preparing eyewear products made of a cellulose ester, a nylon or a polyester by simple and inexpensive single-nozzle or multi-nozzle 3D printers, wherein the eyewear products have a continuous range of colors or a gradual color change. Also provided herein are eyewear products made of a cellulose ester, a nylon or a polyester prepared by the methods disclosed herein.

The present application provides a separator, a method for preparing the same, a secondary battery and an electrical device related thereto. The separator includes a porous substrate and a coating layer disposed on one or more surfaces of the porous substrate, wherein the coating layer includes nanocellulose, and the porous substrate has a surface tension of 1 mN/m, the coating layer has a surface tension of 2 mN/m, and the separator satisfies 1/20.68. The separator provided in the present application has the characteristics of excellent heat resistance and high bonding strength, thus the secondary battery using the separator can have the combined characteristics of high energy density, high thermal safety performance, and long service life.

The present application provides a separator, a method for preparing the same, a secondary battery and an electrical device related thereto. The separator includes a porous substrate and a coating layer disposed on one or more surfaces of the porous substrate, wherein the coating layer includes nanocellulose, and the porous substrate has a surface tension of 1 mN/m, the coating layer has a surface tension of 2 mN/m, and the separator satisfies 1/20.68. The separator provided in the present application has the characteristics of excellent heat resistance and high bonding strength, thus the secondary battery using the separator can have the combined characteristics of high energy density, high thermal safety performance, and long service life.

The disclosure is directed at an extrusion printable cellulose-based nanocomposite and method of making same. In some embodiments, the disclosure is directed at a cellulose-based ink or nanocomposite that can be used by a three-dimensional (3D) extrusion-type printer to fabricate or print a 3D object. In some embodiments, the disclosure includes cellulose acetate (CA) that is dissolved in a solvent or solvent mixture to produce a CA solution to which cellulose nanocrystals (CNCs) are then added to prepare the ink or nanocomposite of the disclosure.

The disclosure is directed at an extrusion printable cellulose-based nanocomposite and method of making same. In some embodiments, the disclosure is directed at a cellulose-based ink or nanocomposite that can be used by a three-dimensional (3D) extrusion-type printer to fabricate or print a 3D object. In some embodiments, the disclosure includes cellulose acetate (CA) that is dissolved in a solvent or solvent mixture to produce a CA solution to which cellulose nanocrystals (CNCs) are then added to prepare the ink or nanocomposite of the disclosure.