CN111117273A - Antibacterial oleophobic plant fiber tray and preparation method thereof - Google Patents
Antibacterial oleophobic plant fiber tray and preparation method thereof Download PDFInfo
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- CN111117273A CN111117273A CN201911163289.8A CN201911163289A CN111117273A CN 111117273 A CN111117273 A CN 111117273A CN 201911163289 A CN201911163289 A CN 201911163289A CN 111117273 A CN111117273 A CN 111117273A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
- C08J7/065—Low-molecular-weight organic substances, e.g. absorption of additives in the surface of the article
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2397/00—Characterised by the use of lignin-containing materials
- C08J2397/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2429/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
- C08J2471/02—Polyalkylene oxides
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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Abstract
The invention discloses a bacteriostatic oleophobic plant fiber tray and a preparation method thereof, wherein the bacteriostatic rate of the surface of the tray to escherichia coli and mould is more than 97%, and the average contact angle between the surface of the tray and oil is between 105 and 125 ℃; the preparation method of the tray comprises the following steps: firstly, uniformly dispersing smashed plant fibers in water to form a suspension; then adding polyvinyl alcohol and water-based acrylic resin into the plant fiber suspension, stirring for 10-30 minutes, adding nano zinc oxide, potassium sorbate and polyethylene glycol 400 into the plant suspension added with the polyvinyl alcohol and the water-based acrylic resin, stirring for 10-20 minutes, then placing the plant fiber suspension into a tray mold, heating and pressurizing for 0.1-5 minutes at the temperature of 120-170 ℃ under the pressure of 5-50MPa, and demolding to obtain a plant fiber tray; and finally, spraying an ethanol solution of perfluorosilane with the concentration of 0.1-1 wt% on the surface of the plant fiber tray, and drying at the temperature of 80-120 ℃ for 10-60 minutes to obtain the antibacterial oleophobic plant fiber tray.
Description
Technical Field
The invention relates to a fiber tray, in particular to a bacteriostatic oleophobic plant fiber tray and a preparation method thereof.
Background
The plant fiber tray has the advantages of wide raw material source, low cost, degradability after being discarded, no pollution to the environment and the like, and has very wide application prospect in the fields of electronic product packaging, food packaging, medicine packaging, daily necessities packaging and the like. However, none of the plant fiber trays in the current market has an antibacterial function, and bacteria are easy to grow after the trays are polluted or affected with damp, so that the application of the trays in the field of food and medicine packaging is limited; in addition, many packaging occasions are contacted with grease substances, and the conventional vegetable fiber trays are easily polluted by the grease substances, so that the application of the vegetable fiber trays is limited. In order to expand the application range of the plant fiber tray, the research and development of the plant fiber tray with the antibacterial and oleophobic functions and the preparation method thereof have very important significance.
Disclosure of Invention
The invention aims to provide a novel degradable plant fiber tray with antibacterial and oleophobic functions and a preparation method thereof.
The main body components of the plant fiber tray prepared by the invention comprise plant fibers such as wood fibers, grass fibers, sugarcane fibers and the like; the bacteriostasis rate of the surface of the tray to escherichia coli and mould is more than 97%, the surface of the tray has stronger oleophobic property, and the average contact angle between the surface of the tray and oil is between 105 and 125 degrees.
The invention aims to overcome the defects of the prior art and provide a method for preparing the antibacterial oleophobic plant fiber tray, which has the advantages of simple and controllable process, low cost and easy industrialization.
The invention discloses a bacteriostatic oleophobic plant fiber tray which comprises a tray main body and a perfluorosilane layer sprayed on the tray main body, wherein the components of the tray main body comprise plant fibers and auxiliary materials.
The invention discloses a preparation method of a bacteriostatic oleophobic plant fiber tray, which is characterized by comprising the following preparation steps:
a preparation method of a bacteriostatic oleophobic plant fiber tray comprises the following preparation steps:
(1) uniformly dispersing the smashed plant fibers in water to form plant fiber suspension with the concentration of 0.5-1 wt%;
(2) adding polyvinyl alcohol and water-based acrylic resin into the plant fiber suspension and stirring for 10-30 minutes, wherein the addition amount of the polyvinyl alcohol is 1-2% of the mass of the plant fiber, and the addition amount of the water-based acrylic resin is 0.5-1% of the mass of the plant fiber;
(3) adding nano zinc oxide, potassium sorbate and polyethylene glycol 400 into the plant suspension added with polyvinyl alcohol and aqueous acrylic resin, and stirring for 10-20 minutes to uniformly disperse the nano zinc oxide and the potassium sorbate in the plant fibers, wherein the addition of the nano zinc oxide is 0.5-2% of the mass of the plant fibers, the addition of the potassium sorbate is 0.1-1% of the mass of the plant fibers, and the addition of the polyethylene glycol 400 is 0.1-0.5% of the mass of the plant fibers;
(4) placing the plant fiber suspension in a tray mould, heating and pressurizing for 0.1-5 minutes at the temperature of 120-170 ℃ under the pressure of 5-50MPa, and demoulding to obtain a plant fiber tray;
(5) spraying the ethanol solution of perfluorosilane with the concentration of 0.1-1 wt% on the surface of the plant fiber tray, and drying at the temperature of 80-120 ℃ for 10-60 minutes to obtain the antibacterial oleophobic plant fiber tray.
Compared with the prior art:
the preparation process of the antibacterial oleophobic plant fiber tray does not need to use any toxic and harmful volatile organic solvent, and has no pollution to the environment.
The preparation method of the antibacterial oleophobic plant fiber tray is simple in operation process, good in repeatability and strong in industrialization prospect.
Drawings
FIG. 1 is a contact angle test chart of a bacteriostatic oleophobic plant fiber tray obtained in example 1 of the invention and rapeseed oil;
FIG. 2 is a contact angle test chart of the bacteriostatic oleophobic plant fiber tray obtained in example 2 of the invention and tea seed oil;
FIG. 3 is a contact angle test chart of the bacteriostatic oleophobic plant fiber tray obtained in example 3 of the invention and sesame oil.
Detailed Description
The technical solution of the present invention will be further described below with reference to the specific embodiments of the present invention and the accompanying drawings, but the present invention is not limited to these embodiments.
Example 1
Firstly, uniformly dispersing smashed wood fibers in water to form a plant fiber suspension with the concentration of 0.5 wt%, then adding polyvinyl alcohol and water-based acrylic resin into the plant fiber suspension and stirring for 10 minutes (the addition amount of the polyvinyl alcohol is 1% of the mass of the plant fibers, and the addition amount of the water-based acrylic resin is 0.5% of the mass of the plant fibers); adding nano zinc oxide, potassium sorbate and polyethylene glycol 400 into the plant suspension containing polyvinyl alcohol and water-based acrylic resin, stirring for 10 min to uniformly disperse the nano zinc oxide and potassium sorbate in plant fibers (the addition of the nano zinc oxide is 1% of the plant fibers, the addition of the potassium sorbate is 1% of the plant fibers, and the addition of the polyethylene glycol 400 is 0.5% of the plant fibers), placing the plant fiber suspension in a tray mold, heating and pressurizing at 150 ℃ for 0.5 min under the pressure of 5MPa, demolding to obtain a plant fiber tray, spraying an ethanol solution of perfluoroheptadecatrimethyoxysilane at the concentration of 1 wt% onto the surface of the plant fiber tray, drying at 120 ℃ for 10 min to obtain the bacteriostatic and oleophobic plant fiber tray, wherein the bacteriostatic and oleophobic plant fiber tray is obtained, the obtained tray surface has an Escherichia coli inhibition rate of 97.5% and a mould inhibition rate of 98%; the contact angle test results show that the contact angle of the tray surface with rapeseed oil is 125 ° (as shown in fig. 1).
Example 2
Firstly, uniformly dispersing smashed grass fibers in water to form a plant fiber suspension with the concentration of 1 wt%, then adding polyvinyl alcohol and water-based acrylic resin into the plant fiber suspension and stirring for 30 minutes (the addition amount of the polyvinyl alcohol is 2% of the mass of the plant fibers, and the addition amount of the water-based acrylic resin is 1% of the mass of the plant fibers); adding nano zinc oxide, potassium sorbate and polyethylene glycol 400 into the plant suspension added with the polyvinyl alcohol and the water-based acrylic resin, and stirring for 20 minutes to uniformly disperse the nano zinc oxide and the potassium sorbate in the plant fibers (the addition of the nano zinc oxide is 2% of the mass of the plant fibers, the addition of the potassium sorbate is 0.1% of the mass of the plant fibers, and the addition of the polyethylene glycol 400 is 0.1% of the mass of the plant fibers); then placing the plant fiber suspension in a tray mould, heating and pressurizing for 0.1 minute at the temperature of 120 ℃ under the pressure of 50MPa, and demoulding to obtain a plant fiber tray; and spraying an ethanol solution of perfluorododecyl trichlorosilane with the concentration of 0.1 wt% on the surface of the plant fiber tray, and drying at the temperature of 80 ℃ for 60 minutes to obtain the antibacterial oleophobic plant fiber tray. The bacteriostasis test result shows that the bacteriostasis rate of the surface of the tray to escherichia coli is 97.8 percent, and the bacteriostasis rate to mould is 97.9 percent; the contact angle test results showed that the contact angle of the tray surface with the tea seed oil was 105 ° (as shown in fig. 2).
Example 3
Firstly, uniformly dispersing smashed plant fibers such as sugarcane fibers and the like in water to form plant fiber suspension with the concentration of 0.8 wt%; then adding polyvinyl alcohol and water-based acrylic resin into the plant fiber suspension and stirring for 20 minutes (the addition amount of the polyvinyl alcohol is 1-2% of the mass of the plant fiber, and the addition amount of the water-based acrylic resin is 0.5-1% of the mass of the plant fiber); adding nano zinc oxide, potassium sorbate and polyethylene glycol 400 into the plant suspension containing polyvinyl alcohol and water-based acrylic resin, stirring for 15 min to uniformly disperse the nano zinc oxide and potassium sorbate in plant fibers (the addition of the nano zinc oxide is 1% of the mass of the plant fibers, the addition of the potassium sorbate is 0.5% of the mass of the plant fibers, and the addition of the polyethylene glycol 400 is 0.3% of the mass of the plant fibers), placing the plant fiber suspension in a tray mold, heating and pressurizing at a pressure of 20MPa and a temperature of 170 ℃ for 5 min, demolding to obtain a plant fiber tray, spraying an ethanol solution of perfluorooctyltrimethoxysilane with a concentration of 0.5 wt% on the surface of the plant fiber tray, drying at a temperature of 100 ℃ for 30 min to obtain the bacteriostatic and oleophobic plant fiber tray, wherein the bacteriostatic and oleophobic plant fiber tray is prepared by the steps of, the obtained tray surface has an Escherichia coli inhibition rate of 97.7% and a mold inhibition rate of 97.6%; the contact angle test results showed that the contact angle of the surface of the tray with sesame oil was 110 ° (as shown in fig. 3).
Example 4
Firstly, uniformly dispersing crushed wood fibers and grass fibers (the mass ratio of the wood fibers to the grass fibers is 1:1) in water to form plant fiber suspension with the concentration of 0.6 wt%; then adding polyvinyl alcohol and water-based acrylic resin into the plant fiber suspension and stirring for 15 minutes (the adding amount of the polyvinyl alcohol is 1.5 percent of the mass of the plant fiber, and the adding amount of the water-based acrylic resin is 0.9 percent of the mass of the plant fiber); adding nano zinc oxide, potassium sorbate and polyethylene glycol 400 into the plant suspension added with polyvinyl alcohol and water-based acrylic resin, and stirring for 10 minutes to uniformly disperse the nano zinc oxide and the potassium sorbate in the plant fibers (the addition of the nano zinc oxide is 1.5% of the mass of the plant fibers, the addition of the potassium sorbate is 0.5% of the mass of the plant fibers, and the addition of the polyethylene glycol 400 is 0.2% of the mass of the plant fibers); then placing the plant fiber suspension in a tray mould, heating and pressurizing for 2 minutes at the temperature of 120 ℃ under the pressure of 30MPa, and demoulding to obtain a plant fiber tray; then spraying an ethanol solution of 1 wt% of perfluorosilane (wherein the ratio of perfluoroheptadecatrimethyloxysilane to perfluorododecyl trichlorosilane to perfluorooctyl trimethoxysilane is 1:1:1) on the surface of the plant fiber tray, and drying at the temperature of 110 ℃ for 20 minutes to obtain the antibacterial oleophobic plant fiber tray; the bacteriostasis test result shows that the bacteriostasis rate of the surface of the tray to escherichia coli is 97.3 percent, and the bacteriostasis rate to mould is 97.5 percent; the contact angle test result shows that the contact angle of the surface of the tray and the sesame oil is 115 degrees.
Example 5
Firstly, uniformly dispersing crushed wood fibers, grass fibers and sugarcane fibers (the mass ratio of the wood fibers to the grass fibers to the sugarcane fibers is 1:1:1) in water to form plant fiber suspension with the concentration of 0.6 wt%; then adding polyvinyl alcohol and water-based acrylic resin into the plant fiber suspension and stirring for 20 minutes (the adding amount of the polyvinyl alcohol is 1.5 percent of the mass of the plant fiber, and the adding amount of the water-based acrylic resin is 0.5 percent of the mass of the plant fiber); adding nano zinc oxide, potassium sorbate and polyethylene glycol 400 into the plant suspension added with polyvinyl alcohol and aqueous acrylic resin, and stirring for 12 minutes to uniformly disperse the nano zinc oxide and the potassium sorbate in the plant fibers (the addition of the nano zinc oxide is 2% of the mass of the plant fibers, the addition of the potassium sorbate is 1% of the mass of the plant fibers, and the addition of the polyethylene glycol 400 is 0.5% of the mass of the plant fibers); then placing the plant fiber suspension in a tray mould, heating and pressurizing for 1 minute at the temperature of 120 ℃ under the pressure of 30MPa, and demoulding to obtain a plant fiber tray; then spraying an ethanol solution of perfluorosilane (the ratio of perfluoroheptadecatrimethyloxysilane to perfluorododecyl trichlorosilane to perfluorooctyl trimethoxysilane is 1:1:1) with the concentration of 0.1 wt% on the surface of the plant fiber tray, and drying for 30 minutes at the temperature of 100 ℃ to obtain the antibacterial oleophobic plant fiber tray; the bacteriostasis test result shows that the bacteriostasis rate of the surface of the tray to escherichia coli is 97.6 percent, and the bacteriostasis rate to mould is 97.2 percent; the contact angle test result shows that the contact angle of the surface of the tray and the sesame oil is 109 degrees.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. A preparation method of a bacteriostatic oleophobic plant fiber tray is characterized by comprising the following steps:
(1) uniformly dispersing the smashed plant fibers in water to form plant fiber suspension with the concentration of 0.5-1 wt%;
(2) adding polyvinyl alcohol and water-based acrylic resin into the plant fiber suspension and stirring for 10-30 minutes, wherein the addition amount of the polyvinyl alcohol is 1-2% of the mass of the plant fiber, and the addition amount of the water-based acrylic resin is 0.5-1% of the mass of the plant fiber;
(3) adding nano zinc oxide, potassium sorbate and polyethylene glycol 400 into the plant suspension added with polyvinyl alcohol and aqueous acrylic resin, and stirring for 10-20 minutes to uniformly disperse the nano zinc oxide and the potassium sorbate in the plant fibers, wherein the addition of the nano zinc oxide is 0.5-2% of the mass of the plant fibers, the addition of the potassium sorbate is 0.1-1% of the mass of the plant fibers, and the addition of the polyethylene glycol 400 is 0.1-0.5% of the mass of the plant fibers;
(4) placing the plant fiber suspension in a tray mould, heating and pressurizing for 0.1-5 minutes at the temperature of 120-170 ℃ under the pressure of 5-50MPa, and demoulding to obtain a plant fiber tray;
(5) spraying the ethanol solution of perfluorosilane with the concentration of 0.1-1 wt% on the surface of the plant fiber tray, and drying at the temperature of 80-120 ℃ for 10-60 minutes to obtain the antibacterial oleophobic plant fiber tray.
2. The method for preparing the bacteriostatic and oleophobic plant fiber tray according to claim 1, wherein in the step (5), the perfluorosilane comprises one or more of perfluoroheptadecatrimethyloxysilane, perfluorododecyl trichlorosilane and perfluorooctyl trimethoxysilane.
3. The preparation method of the bacteriostatic and oleophobic plant fiber tray according to claim 1, characterized in that in step (1), the plant fiber comprises one or more of wood fiber, grass fiber and sugarcane fiber.
4. The antibacterial oleophobic plant fiber tray is characterized by comprising a tray main body and a perfluorosilane layer sprayed on the tray main body, wherein the components of the tray main body comprise plant fibers and auxiliary materials.
5. The bacteriostatic and oleophobic plant fiber tray according to claim 4, wherein the component of the perfluorosilane layer comprises one or more of perfluoroheptadecatrimethyloxysilane, perfluorododecyl trichlorosilane and perfluorooctyl trimethoxysilane.
6. The bacteriostatic and oleophobic plant fiber tray according to claim 4, wherein the auxiliary materials comprise polyvinyl alcohol, water-based acrylic resin, nano zinc oxide, potassium sorbate and polyethylene glycol 400.
7. The bacteriostatic and oleophobic plant fiber tray according to claim 4, characterized in that the contents of polyvinyl alcohol, water-based acrylic resin, nano zinc oxide, potassium sorbate and polyethylene glycol 400 in the auxiliary materials are respectively 1-2%, 0.5-1%, 0.5-2%, 0.1-1% and 0.1-5% of the mass of the plant fiber.
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| CN103946322A (en) * | 2012-10-13 | 2014-07-23 | 东洋铝株式会社 | Water- and oil-repellent coating film and article containing same |
| CN106117624A (en) * | 2016-06-28 | 2016-11-16 | 常州龙骏天纯环保科技有限公司 | A kind of sustained-release antibacterial fresh tray material and preparation method thereof |
| CN107523081A (en) * | 2017-09-26 | 2017-12-29 | 苏州卫刚木包装制品有限公司 | A kind of anti-bacterial and anti-fouling wood moulding packaging material and preparation method thereof |
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2019
- 2019-11-25 CN CN201911163289.8A patent/CN111117273A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1268531A (en) * | 1999-02-10 | 2000-10-04 | 西部电机株式会社 | Natural decomposition material compositions, container made therewith and method for making same |
| CN101054471A (en) * | 2006-04-13 | 2007-10-17 | 张建华 | Manufacturing method for plastic-wood synthetic product |
| CN103946322A (en) * | 2012-10-13 | 2014-07-23 | 东洋铝株式会社 | Water- and oil-repellent coating film and article containing same |
| CN103911012A (en) * | 2014-04-28 | 2014-07-09 | 武汉理工大学 | Straw-potato residue environment-friendly tableware and preparation method thereof |
| CN106117624A (en) * | 2016-06-28 | 2016-11-16 | 常州龙骏天纯环保科技有限公司 | A kind of sustained-release antibacterial fresh tray material and preparation method thereof |
| CN107523081A (en) * | 2017-09-26 | 2017-12-29 | 苏州卫刚木包装制品有限公司 | A kind of anti-bacterial and anti-fouling wood moulding packaging material and preparation method thereof |
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Application publication date: 20200508 |