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Preparation method for cellulose-polyvinyl alcohol degradable composite film and antibacterial strengthening method for cellulose-polyvinyl alcohol degradable composite film

A polyvinyl alcohol, cellulose film technology, applied in the direction of biocide-containing paints, coatings, antifouling/underwater coatings, etc., can solve the problem of reducing the utilization rate of natural cellulose, complicated operation process, and large requirements for cellulose types. and other problems, to achieve the effect of green production process, simple process and improvement of environmental problems

Active Publication Date: 2020-02-21
SHIJIAZHUANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these existing technologies, the cellulose / PVA composite film manufacturing process is relatively complicated in operation, and most of them have large requirements for the types of cellulose, and it needs to be applied after a relatively complicated treatment of natural cellulose, which seriously reduces the need for natural cellulose. Cellulose Utilization

Method used

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  • Preparation method for cellulose-polyvinyl alcohol degradable composite film and antibacterial strengthening method for cellulose-polyvinyl alcohol degradable composite film
  • Preparation method for cellulose-polyvinyl alcohol degradable composite film and antibacterial strengthening method for cellulose-polyvinyl alcohol degradable composite film
  • Preparation method for cellulose-polyvinyl alcohol degradable composite film and antibacterial strengthening method for cellulose-polyvinyl alcohol degradable composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Embodiment 1, the preparation of ionic liquid (one)

[0048] Add 1 mol of hexamethylenediamine and 1 mol of guanidine hydrochloride into a dry 250mL three-neck flask, blow in nitrogen, heat and stir under the protection of nitrogen, after heating to 100°C, keep warm at 10°C per liter for 15min, until the temperature rises to 180°C, and continue the reaction for 6h , the polymerization reaction is completed; the temperature of the polymer is naturally lowered to 120° C., 1 mol of hexafluorophosphoric acid is added to the polymer, and the reaction is completed for 3 hours to obtain a bacteriostatic polymer ionic liquid product.

Embodiment 2

[0049] Embodiment 2, the preparation of ionic liquid (two)

[0050] Add 1 mol of hexamethylenediamine and 1 mol of guanidine hydrochloride into a dry 250mL three-neck flask, blow in nitrogen, heat and stir under the protection of nitrogen, after heating to 100°C, keep warm at 10°C per liter for 15min, until the temperature rises to 180°C, and continue the reaction for 6h , the polymerization reaction is completed; the temperature of the polymer is naturally lowered to 120° C., 1 mol of fluorosulfonic acid is added to the polymer, and the reaction is completed for 5 hours, and a bacteriostatic polymer ionic liquid product is obtained.

Embodiment 3

[0051] Embodiment 3, the preparation of ionic liquid (three)

[0052] Add 1 mol of hexamethylenediamine and 1 mol of guanidine hydrochloride into a dry 250mL three-neck flask, blow in nitrogen, heat and stir under the protection of nitrogen, after heating to 100°C, keep warm at 10°C per liter for 15min, until the temperature rises to 180°C, and continue the reaction for 6h , the polymerization reaction is completed; the solvent is removed by hanging and evaporated, and then the polymer product is obtained by suction filtration, and the temperature is raised to 120 ° C to add 1 mol of tetrafluoroboric acid to the polymer, and react for 4 hours. After the reaction is completed, a bacteriostatic polymer ionic liquid product is obtained.

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Abstract

The invention discloses a preparation method for a cellulose-polyvinyl alcohol degradable composite film. The preparation method comprises the following steps: A, preparation of a cellulose film: dissolving, film preparation, water washing and plasticizing; B, preparation of a polyvinyl alcohol reinforcing solution; and C, compounding of the cellulose membrane and polyvinyl alcohol. The preparation method provided by the invention has the characteristics of simple process and green and environmentally-friendly preparation process, and does not pollute the cellulose solvent so as to realize recycling. The invention also provides an antibacterial reinforced preparation method of the cellulose composite membrane. The polymer ionic liquid antibacterial agent can be compounded with the polyvinyl alcohol reinforcing liquid to form a compound film-forming reinforcing liquid with good film-forming property and long-term antibacterial property, and the compound film-forming reinforcing liquid is prepared on the film material base layer through a dip-coating method to form a composite layer, so the mechanical property and the antibacterial property of the film material can be improved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a functional cellulose film and a preparation method thereof. Background technique [0002] In recent years, a large number of films synthesized from petroleum have been used. On the one hand, it has brought serious white pollution to the environment. On the other hand, with the depletion of petroleum resources, the raw materials for plastic film production are also facing the dilemma of shortage. To address these issues, researchers have turned to degradable and renewable resources. Cellulose is a renewable resource that grows continuously in nature. It is green and environmentally friendly, and has huge reserves in nature. With the continuous deepening of research, people found that the green solvent N-methylmorphine-N-oxide (NMMO) solution of cellulose can dissolve cellulose well under certain conditions, perform spinning, and process it into a film. The NMMO disso...

Claims

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Application Information

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IPC IPC(8): C08J7/04C08J5/18C08L1/02C09D129/04C09D5/14
CPCC08J5/18C09D129/04C09D5/14C08J2301/02C08J2429/04C08L79/00
Inventor 贾鹏飞余同林未君洪张伟亮王娟张星辰
Owner SHIJIAZHUANG UNIVERSITY
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