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Application of an inorganic nanomaterial in improving the slipperiness and softness of cellulose film

A technology of inorganic nanomaterials and cellulose membranes, which is applied in the application field of inorganic nanomaterials in improving the slipperiness and softness of cellulose membranes, can solve the problems of poor performance, poor softness, high pollution, etc., and achieve smoothness Good, good tensile strength, good softness

Active Publication Date: 2020-09-29
山东中科恒联生物基材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A preparation method of regenerated cellulose / lithium alginate nanomaterial composite film, comprising the following steps:

[0027] (1) Preparation of lithium diatomite aqueous suspension: Disperse lithium diatomaceous earth nanomaterials in water and disperse at high speed for 30 minutes to obtain a uniform suspension. The mass percentage of lithium diatomaceous earth nanomaterials is 2%;

[0028] (2) Preparation of 1-allyl-3-methylimidazolium chloride (AmimCl) ionic liquid suspension of lithium algalite: add the prepared aqueous suspension of lithium algalite to a mass fraction of 60.0% In the ionic liquid aqueous solution, the amount of lethonite added accounted for 0.05% of the mass percentage of pure AmimCl, stirred and mixed for 30min, and then dewatered and concentrated until the mass concentration of the ionic liquid aqueous solution was 95%;

[0029] (3) Preparation of cellulose / lithium-ionic liquid solution: mix the cellulose raw material with the concentrate...

Embodiment 2

[0041] A preparation method of regenerated cellulose / silicon dioxide nanomaterial composite film, comprising the following steps:

[0042] (1) Preparation of an aqueous suspension of silica: disperse the silica nanomaterials in water and disperse at high speed for 15 minutes to obtain a uniform suspension. The mass percentage of the silica nanomaterials is 0.5%;

[0043] (2) Preparation of 1-butyl-3-methylimidazole acetate (BmimAc) ionic liquid suspension of silicon dioxide: add the prepared silicon dioxide aqueous suspension to a mass fraction of 40.0% In the aqueous ionic liquid solution, the amount of silicon dioxide added accounts for 0.15% of the mass percentage of pure BmimAc, stirred and mixed for 50min, and then dewatered and concentrated until the mass concentration of the aqueous ionic liquid solution is 98%;

[0044] (3) Preparation of cellulose / silicon dioxide-ionic liquid solution: mix the cellulose raw material with the concentrated ionic liquid suspension of sil...

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PUM

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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 the application of an inorganic nanometer material in improving the smoothness and softness of a cellulose 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 p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L1/02C08K3/34C08K3/36C08J5/18
CPCC08J5/18C08J2301/02C08K3/346C08K3/36C08K2201/011
Inventor 许丽丽张军李瑞丰余坚邱金江武进张晓煜张金明贾锋伟李军波咸炳斌边守娟崔增亮张东光
Owner 山东中科恒联生物基材料有限公司