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Polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and preparation method thereof

A polyvinyl alcohol and UV barrier technology, applied in the field of polymer composite materials, can solve the problems of pure polyvinyl alcohol materials such as lack of UV barrier and antibacterial ammonia response, and achieve excellent UV barrier performance, high hygroscopicity, and suitable for amplification The effect of production

Active Publication Date: 2021-11-30
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure polyvinyl alcohol materials lack functions such as UV blocking, antibacterial, and ammonia gas response, which limits their practical application.

Method used

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  • Polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and preparation method thereof

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preparation example Construction

[0019] In the following specific examples and comparative example formulations and preparation methods, the chemical formula of the cobalt complex crystal is H 2 O, where (H 8 P 3 NC 3 o 9 ) loses the anion of 4 protons for aminotrimethylene phosphoric acid, and the preparation method comprises the following steps:

[0020] Dissolve cobalt nitrate in a mixed solvent of deionized water and DMF, stir for 10 minutes to mix evenly, then slowly add aminotrimethylene phosphoric acid, stir and mix for 1 hour, then place it in a reaction kettle, and react at 140°C for 48 hours. Then cool to room temperature, filter, wash and dry to obtain cobalt complex crystals;

[0021] The mass ratio of cobalt nitrate, aminotrimethylene phosphoric acid, deionized water and DMF is 15:11:200:950.

Embodiment 1

[0023] A polyvinyl alcohol composite material with both ultraviolet blocking and antibacterial functions is characterized in that it consists of the following components in parts by weight: 100 parts of polyvinyl alcohol and 3 parts of cobalt complex crystals.

[0024] The preparation method comprises the steps of:

[0025] (1) Disperse 3 parts of cobalt complex crystals in 3000 parts of distilled water, sonicate at room temperature for 1 hour, and stir for 2 hours to obtain a uniform dispersion of cobalt complex, which is set aside;

[0026] (2) Add 100 parts of polyvinyl alcohol to the homogeneous dispersion of the cobalt complex obtained in step (1), first stir at room temperature for 1 hour, then heat to 85°C, stir for 2 hours, and ultrasonically remove air bubbles to obtain a uniform Film-forming solution, spare;

[0027] (3) The film-forming solution obtained in step (2) was poured into a flat-bottomed glass dish, and dried in a vacuum oven at 55°C for 24 hours to obtai...

Embodiment 2

[0029] A polyvinyl alcohol composite material with both ultraviolet blocking and antibacterial functions is characterized in that it consists of the following components in parts by weight: 100 parts of polyvinyl alcohol and 6 parts of cobalt complex crystals.

[0030] The preparation method comprises the steps of:

[0031] (1) Disperse 6 parts of cobalt complex crystals in 3000 parts of distilled water, sonicate at room temperature for 1 hour, and stir for 2 hours to obtain a uniform dispersion of cobalt complex, which is set aside;

[0032] (2) Add 100 parts of polyvinyl alcohol to the homogeneous dispersion of the cobalt complex obtained in step (1), first stir at room temperature for 1 hour, then heat to 85°C, stir for 2 hours, and ultrasonically remove air bubbles to obtain a uniform Film-forming solution, spare;

[0033] (3) The film-forming solution obtained in step (2) was poured into a flat-bottomed glass dish, and dried in a vacuum oven at 55°C for 24 hours to obtai...

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Abstract

The invention belongs to the technical field of polymer composite materials, and relates to a polyvinyl alcohol composite material with ultraviolet blocking and antibacterial functions and a preparation method thereof, wherein the polyvinyl alcohol composite material is prepared from the following raw materials: polyvinyl alcohol, and cobalt complex crystal [Co4(H8P3NC3O9)2].H2O, wherein in the formula, (H8P3NC3O9) is an anion of amino trimethylene phosphonic acid losing four protons. The invention also provides the preparation method of the polyvinyl alcohol composite material. The polyvinyl alcohol composite material prepared by the preparation method has excellent ultraviolet blocking property, antibacterial property, ammonia response property, mechanical property, water vapor permeability and thermal stability, can maintain high optical transparency, is simple in preparation process, is suitable for large-scale production, and has potential application value in the fields of packaging, antibacterial materials, ammonia gas detection and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a polyvinyl alcohol composite material with both ultraviolet blocking and antibacterial functions and a preparation method thereof. Background technique [0002] Coordination chemistry has a wealth of research content, and the study of its structure and properties plays an important role today. Almost every field involves coordination chemistry. Among them, organometallic chemistry is an important research direction in coordination chemistry. In recent years, many metal-organic complexes with UV blocking and antibacterial functions have been developed, and their UV blocking and antibacterial effects are remarkable. Due to the modifiability of functions and the controllability of their own structures, metal-organic complex materials can be better compatible with polymers, and can facilitate the preparation of organic / inorganic composite materials. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08K5/00C08J5/18
CPCC08J5/18C08J2329/04C08K5/0091
Inventor 唐群武经纬冯少雄张焱吴同发李秋霖
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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