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Cellulose acetate nano composite material with ultraviolet shielding and bacteriostatic properties and preparation method thereof

A nano-composite material, cellulose acetate technology, applied in the fields of nanotechnology, nanotechnology, nanotechnology for materials and surface science, can solve the problems of cellulose acetate antibacterial and UV shielding limitations, and achieve excellent UV shielding performance , low hygroscopicity, high yield effect

Pending Publication Date: 2021-01-05
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the natural disadvantages of cellulose acetate in antibacterial and UV shielding, its practical application is limited to a certain extent.

Method used

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  • Cellulose acetate nano composite material with ultraviolet shielding and bacteriostatic properties and preparation method thereof
  • Cellulose acetate nano composite material with ultraviolet shielding and bacteriostatic properties and preparation method thereof

Examples

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preparation example Construction

[0021] The halloysite modified by the copper complex is a self-made nano particle (diameter is 40-80nm, length is 200-1000nm), and its preparation method comprises the following steps:

[0022] Add halloysite into deionized water at room temperature, stir for 30 minutes and mix well, then add copper chloride dihydrate, stir for 2 hours to obtain a uniform dispersion; then dissolve 1,2-benzisothiazol-3-one into DMF, and the resulting 1,2-benzisothiazol-3-one solution was added to the above dispersion, stirred for 30 minutes, placed in a constant temperature water bath at 70°C for 24 hours, and then centrifuged , washing and drying to obtain the halloysite modified by the copper complex;

[0023] The mass ratio of halloysite, deionized water, copper chloride dihydrate, 1,2-benzisothiazol-3-one and DMF is 5:250:2:1.7:250.

Embodiment 1

[0025] A cellulose acetate nanocomposite material with ultraviolet shielding and bacteriostasis properties consists of the following components by weight: 99.5 parts of cellulose acetate and 0.5 parts of halloysite modified by copper complexes.

[0026] The preparation method comprises the steps of:

[0027] (1) Disperse 0.5 part of halloysite modified by copper complex in 2000 parts of acetone, sonicate at room temperature for 1 h, and stir for 1 h to obtain a uniform dispersion of halloysite modified by copper complex, which is set aside;

[0028] (2) 99.5 parts of cellulose acetate are added to the halloysite homogeneous dispersion modified by the copper complex obtained in step (1), stirred at room temperature for 4 hours, and ultrasonically removed to obtain a uniform film-forming liquid for subsequent use;

[0029] (3) The film-forming solution obtained in step (2) was poured into a flat-bottomed glass dish, and dried in a vacuum oven at 35° C. for 24 hours to obtain a c...

Embodiment 2

[0031] A cellulose acetate nanocomposite material with ultraviolet shielding and bacteriostasis properties consists of the following components in parts by weight: 99 parts of cellulose acetate and 1.0 part of halloysite modified by copper complexes.

[0032] The preparation method comprises the steps of:

[0033] (1) Disperse 1.0 part of halloysite modified by copper complex in 2000 parts of acetone, sonicate at room temperature for 1 h, and stir for 1 h to obtain a uniform dispersion of halloysite modified by copper complex, which is set aside;

[0034] (2) 99 parts of cellulose acetate are added to the halloysite homogeneous dispersion modified by the copper complex obtained in step (1), stirred at room temperature for 4 hours, and ultrasonically removed to obtain a uniform film-forming liquid for subsequent use;

[0035] (3) The film-forming solution obtained in step (2) was poured into a flat-bottomed glass dish, and dried in a vacuum oven at 35° C. for 24 hours to obtain...

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Abstract

The invention discloses a cellulose acetate nano composite material with ultraviolet shielding and bacteriostatic properties and a preparation method thereof. The cellulose acetate nano composite material is composed of the following components by weight: 96-99.5 parts of cellulose acetate and 0.5-4 parts of copper complex modified halloysite. The copper complex modified halloysite is used as a modifier, so that the performance of the cellulose acetate can be effectively improved. The cellulose acetate nano composite material prepared by the invention has excellent ultraviolet shielding performance, bacteriostatic performance, thermal stability, water vapor barrier property, low hygroscopicity and low cytotoxicity, can keep high optical transparency, and is simple in preparation process, environment-friendly, low in cost, suitable for large-scale production, and has good application prospects in the fields of packaging, ultraviolet protection and the like.

Description

technical field [0001] The invention belongs to the technical field of cellulose acetate nanocomposite materials, and in particular relates to a cellulose acetate nanocomposite material with ultraviolet shielding and antibacterial properties and a preparation method thereof. Background technique [0002] Because metal coordination compounds are a class of compounds with characteristic chemical structures, the central atoms (or ions, collectively referred to as central atoms) and surrounding molecules or ions (called ligands / ligands) are completely or partially coordinated bonded to form. Because of its potential application value in biomedicine, luminescence, and biological activity, it has attracted extensive attention from researchers. [0003] With the continuous development of science and technology, people's requirements for all aspects of polymer materials are becoming more and more stringent. Traditional polymer materials have been difficult to meet the needs of tech...

Claims

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Application Information

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IPC IPC(8): C08L1/12C08K9/04C08K3/34C08J5/18B82Y30/00
CPCC08J5/18B82Y30/00C08J2301/12C08K9/04C08K3/34
Inventor 唐群程泽武经纬张焱刘成凯邹志明梁福沛
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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