Unlock instant, AI-driven research and patent intelligence for your innovation.

Degradable antibacterial film based on rice husk and preparation method thereof

An antibacterial film and rice husk technology, which is applied in the field of degradable antibacterial film based on rice husk and its preparation, can solve problems such as environmental pollution, plastic packaging film and composite packaging film are not easy to degrade, and achieve low cost, increase economic value and Added value and the effect of simple film production method

Active Publication Date: 2017-05-31
HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] An object of the present invention is to provide a degradable antibacterial film based on rice husk, which is used to solve the problem of environmental pollution caused by plastic packaging films and composite packaging films in the prior art. problem, and improved the added value of rice husk, another object of the present invention is to provide the preparation method of this degradable antibacterial film based on rice husk

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] This degradable antibacterial film based on rice husk is composed of 4% rice husk powder, 15% sodium hydroxide, 6% xanthan gum, 1.5% chitosan, 8.0% citric acid, 11.0% lactic acid, 3% carrageenan, 20% sodium carboxymethyl cellulose, 4% allyl isothiocyanate, 13% glycerin, 10% deionized water, of which rice husk powder Select 270 mesh rice husk powder for use. Wherein the mass volume ratio is the ratio of the mass of a certain component to the volume of all components, and the volume of all components is rice husk powder, sodium hydroxide, xanthan gum, chitosan, citric acid, lactic acid, carrageenan, carboxylate The total volume of sodium methylcellulose, allyl isothiocyanate, glycerin, and deionized water, such as the mass-to-volume ratio of rice husk powder is the ratio of the mass of rice husk powder to the above-mentioned total volume, the same below.

[0023] The preparation method of the above-mentioned degradable antibacterial film based on rice husk:

[0024] (1)...

Embodiment 2

[0031] This degradable antibacterial film based on rice husk is composed of 6% rice husk powder, 17% sodium hydroxide, 7% xanthan gum, 2% chitosan, 9% citric acid, 13% lactic acid, 4% carrageenan, 22% sodium carboxymethyl cellulose, 4.5% allyl isothiocyanate, 14% glycerin, 12% deionized water, of which rice husk Powder selects 270 order rice husk powders for use.

[0032] The preparation method of the above-mentioned degradable antibacterial film based on rice husk:

[0033] (1) Select mildew-free rice husks and dry them in an electric blast drying oven at 90°C for 15 minutes;

[0034] (2) Pulverize the dried rice husk into rice husk powder;

[0035] (3) Add 6% (w / v) rice husk powder to 17% (w / v) sodium hydroxide solution and stir for 18 minutes, add 2% (w / v) chitosan to 9.0% (w / v) The mixture of citric acid and 13.0% (w / v) lactic acid is placed in a magnetic stirrer and stirred until it is completely dissolved, then added to the mixture of rice husk powder and sodium hydr...

Embodiment 3

[0040] This degradable antibacterial film based on rice husk is composed of 8% rice husk powder, 18% sodium hydroxide, 8% xanthan gum, 2.5% chitosan, 10.0% citric acid, 15.0% lactic acid, 5% carrageenan, 25% sodium carboxymethyl cellulose, 5% allyl isothiocyanate, 15% glycerin, 15% deionized water, of which rice husk powder Select 270 mesh rice husk powder for use.

[0041] The preparation method of the above-mentioned degradable antibacterial film based on rice husk:

[0042] (1) Select non-mildew rice husks and dry them in an electric blast drying oven at 100°C for 14 minutes;

[0043] (2) Pulverize the dried rice husk into rice husk powder;

[0044] (3) Add 8% (w / v) rice husk powder to 18% (w / v) sodium hydroxide solution and stir for 16 minutes, add 2.5% (w / v) chitosan to 10.0% (w / v) The mixture of citric acid and 15.0% (w / v) lactic acid is placed in a magnetic stirrer and stirred until it is completely dissolved, then added to the mixture of rice husk powder and sodium...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
elongation at breakaaaaaaaaaa
elongation at breakaaaaaaaaaa
elongation at breakaaaaaaaaaa
Login to View More

Abstract

The invention relates to a degradable antibacterial film based on a rice husk and a preparation method thereof. The degradable antibacterial film based on the rice husk is prepared from the following components in mass volume ratio: 4 to 9 percent of rice husk powder, 15 to 18 percent of sodium hydroxide, 6 to 8 percent of xanthan gum, 1.0 to 2.5 percent of chitosan, 8.0 to 10.0 percent of citric acid, 11.0 to 15.0 percent of lactic acid, 3 to 5 percent of carrageenan, 20 to 25 percent of sodium carboxymethylcellulose, 4 to 5 percent of allyl isosulfocyanate, 13 to 15 percent of glycerinum, and 10 to 15 percent of deionized water, wherein the rice husk powder selects 270-mesh rice husk powder. The degradable antibacterial film based on the rice husk has the thickness ranging from 80 to 230mu m, the tensile strength ranging from 56.7 to 74.6MP, the elongation at break ranging from 21.7 to 37.9 percent, and the folding strength ranging from 17 to 28 times. According to the degradable antibacterial film based on the rice husk provided by the invention, the rice husk powder fine particles and antimicrobial substances are uniformly distributed in a film material, so that the prepared packaging film has a stronger mechanical property and a stronger barrier property, and can realize heating seal.

Description

[0001] 1. Technical field [0002] The invention relates to the technical field of packaging films, in particular to a rice husk-based degradable antibacterial film and a preparation method thereof. [0003] 2. Background technology [0004] Packaging film is widely used, but because packaging film is usually non-degradable, after the packaging film is disassembled from the packaging, it is often not used for secondary use, but is discarded, forming non-degradable garbage, which pollutes the environment . [0005] The annual output of rice in the Heilongjiang reclamation area is about 21 billion jin, and rice husk accounts for 20% of the rice processing volume. Therefore, the discharge of rice husk in the reclamation area reaches 4.2 billion jin. The output of rice husk is very rich, but the current application of rice husk is mainly fuel and feed , its added value is not high, how to make comprehensive use of it, increase the added value, obtain greater benefits with lower in...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L1/28C08L97/02C08L5/00C08L5/08C08K5/053C08J5/18
CPCC08J5/18C08J2301/28C08J2405/00C08L1/286C08L2201/06C08L2203/16C08L2205/025C08L2205/035C08L2205/16C08L97/02C08L5/00C08L5/08C08K5/053
Inventor 李娟张东杰王颖李志江张爱武王洪江
Owner HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY