Preparation method of regenerated cellulose/inorganic nano-material composite film

Abstract

The invention discloses a preparation method of a regenerated cellulose / inorganic nano-material composite film. The preparation method comprises the steps of firstly, preparing water mixed suspensionof an inorganic nano-material, mixing the prepared water mixed suspension with an ionic liquid aqueous solution, and carrying out dewatering concentration treatment on the obtained mixture; then, mixing the concentrated ionic liquid mixed suspension of the inorganic nano-material with a cellulose raw material, and carrying out dewatering and defoaming treatment to obtain a uniform and transparentcellulose / inorganic nano-material solution; finally, regenerating the cellulose / inorganic nano-material solution for forming a film so as to obtain the regenerated cellulose / inorganic nano-material composite film. The preparation method provided by the invention overcomes the defects that the traditional regenerated cellulose film is low in slippery degree, poorer in softness, poor in service performance under the conditions of low temperature and high humidity, and the like, and improves the quality of the cellulose film; furthermore, the preparation method solves the problems that the traditional regenerated cellulose film is high in energy consumption and pollution during preparation.

Description

technical field [0001] The invention relates to a preparation method of a regenerated cellulose / inorganic nano material composite film. Background technique [0002] Under the current severe environmental protection situation, the application of regenerated cellulose film is becoming more and more widespread, especially in the field of food and drug packaging. Much favored. In developed countries in Europe and the United States, the largest amount of regenerated cellulose film is undoubtedly the two major fields of ham and other meat food packaging and pharmaceutical packaging. However, with the continuous improvement of production efficiency, regenerated cellulose film has low slippage, low Poor softness, poor performance under low temperature and high humidity conditions and other limitations. [0003] According to the survey, when meat such as ham is produced or processed, the ambient temperature required is below 15°C, the temperature of meat products packaged with cel...

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method for preparing a regenerated cellulose / inorganic nanomaterial composite film using an ionic liquid as a solvent, which improves the defects of the traditional regenerated cellulose film such as low slip, poor softness, and poor performance under low-temperature and high-humidity conditions, and improves The quality of cellulose membrane; at the same time, it solves the problems of high energy consumption and high pollution in the traditional regenerated cellulose membrane preparation process