Antibacterial polyvinyl alcohol water-soluble film and preparation method thereof

A technology of polyvinyl alcohol and polyvinyl alcohol resin, which is applied in the field of daily chemical industry and new materials, can solve problems such as microbial pollution, achieve high antibacterial activity, reduce costs, and inhibit the growth of microorganisms

Active Publication Date: 2016-06-22
GUANGZHOU NANDA IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the strong hydrophilicity of polyvinyl alcohol water-soluble film, it is easy to be contaminated by microorganisms, so it is urgent to develop antibacterial polyvinyl alcohol water-soluble film with long-term antimicrobial effect.

Method used

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  • Antibacterial polyvinyl alcohol water-soluble film and preparation method thereof
  • Antibacterial polyvinyl alcohol water-soluble film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0035] Preparation of nano-copper-loaded montmorillonite: 1kg Na-based montmorillonite (ion exchange capacity is 1mmol / g) is prepared into a 5wt% (mass fraction) suspension, and then 0.5mol / L of Cu(NO 3 ) 2 1.2L, stirred and reacted in a water bath at 90°C for 6 hours, then added excess ascorbic acid for reduction, then repeatedly washed with deionized water and suction filtered, finally dried and ultrafinely pulverized to obtain nano-copper-loaded montmorillonite, in which nano-copper The mass fraction is 3.1wt%.

[0036] Preparation of nano-copper and quaternary ammonium cationic montmorillonite: disperse 1kg of nano-copper montmorillonite prepared above in 19L deionized water, then add 0.5mol / L brominated bis(dodecyldimethyl ) Ethylene diammonium 1.2L, and adjust the pH value to 7.0, stirred and reacted at 70°C for 7h, then repeatedly washed with deionized water and suction filtered, finally dried and ultrafinely pulverized to obtain nano-copper and quaternary ammonium cat...

Embodiment 1

[0038]In terms of parts by mass, first 72.0 parts of polyvinyl alcohol resin (1788), 13.0 parts of ethylene glycol, 10.0 parts of glycerol, 1.0 parts of nano copper and quaternary ammonium cationic montmorillonite composite antibacterial agent, 3 octadecyl -(3,5-di-tert-butyl-4-hydroxyphenyl) propionate 0.5 parts, bis(2,4,6-tri-tert-butylphenyl) pentaerythritol diphosphite 0.3 parts, water-soluble starch 1.5 parts parts, 0.9 parts of hydroxymethylcellulose, 0.5 parts of calcium stearate, and 0.3 parts of zinc stearate were uniformly mixed in a high-speed mixer at 65° C. to obtain a mixture.

[0039] Then the obtained mixture is added to an extrusion blown film machine, and the blown film is extruded at a temperature of 160° C. to obtain an antibacterial polyvinyl alcohol water-soluble film with a thickness of 0.05 mm.

Embodiment 2

[0044] In terms of parts by mass, 65.0 parts of polyvinyl alcohol resin (1788), 10.0 parts of glycerol (glycerol), 10.0 parts of dipropylene glycol (diglycerin), 10.0 parts of trimethylolpropane, nanometer-loaded copper and quaternary Ammonium cationic montmorillonite compound antibacterial agent 0.5 part, 4-[(4,6-dioctylthio-1,3,5-triazin-2-yl)amino]-2,6-di-tert-butylphenol 0.3 Parts, 0.2 parts of tris(2,4-di-tert-butylphenyl) phosphite, 1.9 parts of hydroxymethyl cellulose, 1.1 parts of calcium chloride, 0.7 parts of zinc stearate, 0.3 parts of magnesium stearate at high speed Mix uniformly at 50° C. in a mixer to obtain a mixture.

[0045] The resulting mixture is then added to an extrusion blown film machine, and the blown film is extruded at a temperature of 150° C. to obtain an antibacterial polyvinyl alcohol water-soluble film with a thickness of 0.04 mm.

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Abstract

The invention discloses an antibacterial polyvinyl alcohol water-soluble film and a preparation method thereof. The antibacterial polyvinyl alcohol water-soluble film comprises, by mass, 65.0-80.0% of polyvinyl alcohol resin, 15.0-30.0% of plasticizer, 0.5-1.5% of composite antibacterial agent, 0.5-1.0% of antioxidant, 2.0-3.0% of anti-blocking agent and 0.5-1.0% of lubricant. The antibacterial polyvinyl alcohol water-soluble film and the preparation method thereof have the advantages that since the composite antibacterial agent is montmorillonoid loading nano-copper and quaternary ammonium cations, the obtained antibacterial polyvinyl alcohol water-soluble film is capable of inhibiting microbial growth effectively to be protected from being damaged by bacterial contamination and microorganisms; barrier performance, flame retardance and mechanical performance of the antibacterial polyvinyl alcohol water-soluble film can be improved, and light transmission performance and water solubility of the antibacterial polyvinyl alcohol water-soluble film are not damaged; the preparation method is simple and low in cost and can be used for industrialized production, and the obtained antibacterial polyvinyl alcohol water-soluble film is free of toxicity, environment friendly and biodegradable, can be used for interior packages of washing liquid and laundry detergent and is promising in application prospect of interior packages of food.

Description

technical field [0001] The invention belongs to the field of daily chemicals and new materials, and in particular relates to an antibacterial polyvinyl alcohol water-soluble film used for inner packaging of washing liquid and laundry liquid and a preparation method thereof. Background technique [0002] With the development of science and technology, people's living standards are constantly improving, and their awareness of environmental protection is also increasing. Consumers have also put forward higher and higher requirements for commodity packaging, and the voice of looking forward to green packaging is also getting higher and higher. A water-soluble film made of polyvinyl alcohol (PVA) as the main raw material. As a new type of green packaging product, it is degradable and can dissolve and disappear naturally in nature. It is a kind of green and environmentally friendly film material, and it is now more and more popular among people. [0003] The traditional polyvinyl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L29/04C08L3/02C08L1/28C08K13/06C08K9/12C08K3/08C08K5/19C08K5/098
CPCC08J5/18C08J2329/04C08J2401/28C08J2403/02C08K2201/011C08K2201/014C08L29/04C08L2201/02C08L2201/06C08L2203/162C08L2205/03C08L3/02C08L1/284C08K13/06C08K9/12C08K2003/085C08K5/19C08K5/098
Inventor 杜桂彬谭绍早
Owner GUANGZHOU NANDA IND
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