3D printing chitosan material using ionic liquid as medium, and preparation method thereof

Abstract

The present invention relates to a 3D printing chitosan material using an ionic liquid as a medium, and a preparation method and an application thereof. The medium comprises at least an ionic liquid,and the ionic liquid is at least one of 1-allyl-3-methylimidazolium bromide, 1-allyl-3-methylimidazolium chloride, 1-ethyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium chloride, 1-butyl-3-methylimidazolium acetate, 1-ethyl-3-methylimidazolium acetate, 1-ethyl-3-methylimidazolium dimethylphosphate and 1-carboxymethyl-3-methylimidazolium chloride. The 3D printing chitosan material usingthe ionic liquid as the medium has the advantages of effective realization of the three-dimensional molding of the chitosan material, simple steps, simplicity in operation, and designing and preparation of a three-dimensional chitosan functional material with different forms as needed.

Description

technical field [0001] The invention relates to a 3D printing chitosan material using ionic liquid as a medium and a preparation method thereof. Background technique [0002] Based on the principle of three-dimensional design and layer-by-layer superposition, 3D printing technology is one of the fastest-growing and most applicable innovative technologies in recent years. It is both technological and practical, which can not only satisfy individual design but also produce products conveniently and quickly, so it is widely used in various fields such as military, aerospace, medicine, construction, and people's livelihood. Among them, bio-3D printing combined with biopolymer materials and active substances has important potential applications in the field of medical research, such as artificial tissues and artificial organs. [0003] Chitosan is modified from natural polymer chitin, which is a biopolymer second only to cellulose in nature. Because chitosan has the characteris...

AI Technical Summary

Problems solved by technology

However, due to the intramolecular and intermolecular hydrogen bond networks of chitosan, it cannot be melted and dissolved in water or most traditional organic solvents, which greatly restricts the three-dimensional molding and processing applications of chitosan.

At present, the common solvent system of chitosan is dilute acid or alkali, which is difficult to form three-dimensionally during processing, is easy to cause corrosion, and is easy to introduce harmful impurities to organisms.