Method for preparing cellulose/nanometer titanium dioxide blending material in ionic liquid solvent

Abstract

The invention provides a method for preparing a cellulose / nanometer titanium dioxide blending material in an ionic liquid solvent, wherein a fiber consists of the cellulose and nanometer titanium dioxide particles. The ionic liquid solvent can directly dissolve the cellulose to avoid a complicated process for traditionally dissolving the cellulose; the nanometer titanium dioxide can be added to form uniform and stable spinning solution of cellulose / nanometer titanium dioxide; and the cellulose / nanometer titanium dioxide blending fiber material can be obtained through fiber spinning plasticizing, stretching, washing and drying. The composite material prepared by the method has the advantages of strong intensity, breaking elongation and flexibility, maintains the performance of regenerated cellulose filament, and has the functions of antibacterial activity and ultraviolet absorption. In the composite material prepared by the method, the cellulose is firmly combined with the nanometer titanium dioxide, and the nanometer titanium dioxide is evenly distributed and is difficult to run off. An ionic liquid is used as the solvent to prepare the cellulose composite material, so the method has the advantages of simple and convenient process, recyclable solvent, convenient operation and low cost, and is suitable for large-scale industrial application.

Description

technical field

[0001] The invention relates to a preparation method of a cellulose / nano-titanium dioxide blend material, which belongs to the field of natural polymer chemistry and also belongs to the field of material science. In particular, it relates to a preparation method of a cellulose / nano titanium dioxide blend material in an ionic liquid solvent system. Background technique

[0002] Cellulose is the most abundant renewable resource on earth, and has the advantages of being cheap, degradable and non-polluting to the ecological environment. Converting dissolved cellulose into energy, industrial raw materials, fine chemicals, food, medicine and feed is a better way to utilize cellulose resources and protect the environment. Cellulose is a polymer compound with a linear structure connected by D-glucopyranose groups through 1-4β glycosidic bonds. Its structure is complex, and there are a large number of crystalline regions, amorphous region structures and hydrogen bond...