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Antibacterial polyvinyl alcohol preservative film doped with clove oil/beta-cyclodextrin and preparation method thereof

A technology of polyvinyl alcohol and clove essential oil, which is applied in the field of composite materials, can solve problems such as insufficient mechanical properties and water resistance, and achieve the effects of improving mechanical properties, increasing tensile strength, and good dispersion

Inactive Publication Date: 2018-04-06
DANGTU COUNTY RUILONG FRUIT TREE PLANTING SPECIALIZED COOP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are insufficient mechanical properties and water resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0021] An antibacterial polyvinyl alcohol preservative film doped with clove essential oil / beta-cyclodextrin, made from the following raw materials in parts by weight (g):

[0022] Polyvinyl alcohol 43, bentonite 12, citric acid 10, glycerin 4, gluconic acid 8, carbon black 9, polyether amine 13, nano silicon dioxide 5, sodium dodecyl cyclodextrin benzene sulfonate 3, potassium hydroxide 6. Graphene oxide 7, carbon nanotubes 9, pentylene glycol 8, acetic acid 5, β-cyclodextrin 8, clove essential oil 9, ethanol, H 2 SO 4 , Distilled water.

[0023] A preparation method of an antibacterial polyvinyl alcohol preservative film doped with clove essential oil / beta-cyclodextrin, characterized in that, it is carried out in the following steps:

[0024] a. Mix bentonite and glycerin, add distilled water at 1:20, stir for 2 hours to disperse evenly, adjust pH to 7-8, add citric acid and ethanol at 1:10, heat up to 70-80°C constant temperature water bath, slowly add gluconic acid dropw...

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PUM

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Abstract

The invention discloses an antibacterial polyvinyl alcohol preservative film doped with clove oil / beta-cyclodextrin and a preparation process thereof. The preservative film is characterized in that polyvinyl alcohol, bentonite, citric acid, glycerin, gluconic acid, carbon black, polyetheramine, nanosilica, sodium dodecylbenzenesulfonate, potassium hydroxide, graphene oxide, carbon nanotube, pentanediol, acetic acid, beta-cyclodextrin, clove oil and the like are adopted as raw materials. According to the preparation process of the antibacterial polyvinyl alcohol preservative film doped with clove oil / beta-cyclodextrin, the bentonite reacts with the gluconic acid to form intermolecular hydrogen bonds with the polyvinyl alcohol to improve the water resistance of the preservative film. The carbon black and the nanosilica are modified with the polyetheramine to obtain core-shell structure reinforcements; the graphene oxide (GO) is connected to the polyvinyl alcohol through the hydrogen bonds to increase mechanical properties of polyvinyl alcohol materials; the carbon nanotube is processed by the sodium dodecylbenzenesulfonate and the potassium hydroxide to improve tensile strength; by adopting the pentanediol as a crosslinking agent and the acetic acid as a catalyzer, intermolecular acetalation crosslinking occurs in the polyvinyl alcohol to improve the water resistance of the preservative film.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to an antibacterial polyvinyl alcohol preservative film doped with clove essential oil / beta-cyclodextrin, and a preparation process thereof. Background technique [0002] With the improvement of public living standards, people pay more and more attention to food safety and environmental safety, which makes traditional plastic cling film questionable. Then, how to ensure food safety and shelf life while being environmentally friendly, and how to prepare edible or biodegradable plastic wrap have become an important direction for industry research and development. [0003] In his master's degree thesis "Preparation of Bentonite / PVA Preservative Film and Its Application in Mango Preservation", Huang Huirong used bentonite as the filling material and polyvinyl alcohol (PVA) as the substrate to study bentonite and its loading chemistry. The adsorption of ethylene by the fresh-keeping...

Claims

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Application Information

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IPC IPC(8): C08L29/04C08L5/16C08L91/00C08K13/06C08K9/04C08K7/24C08K3/34C08K3/04C08K3/36C08J5/18
CPCC08J5/18C08J2329/04C08J2491/00C08K3/04C08K3/346C08K3/36C08K7/24C08K9/04C08K13/06C08K2201/011
Inventor 吴祥忠
Owner DANGTU COUNTY RUILONG FRUIT TREE PLANTING SPECIALIZED COOP