CN106543540A - A kind of SiO2Carry the preparation method of silver-colored anti-mildew fresh-keeping packaging bag - Google Patents
A kind of SiO2Carry the preparation method of silver-colored anti-mildew fresh-keeping packaging bag Download PDFInfo
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- CN106543540A CN106543540A CN201610961203.6A CN201610961203A CN106543540A CN 106543540 A CN106543540 A CN 106543540A CN 201610961203 A CN201610961203 A CN 201610961203A CN 106543540 A CN106543540 A CN 106543540A
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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
- C08K13/00—Use of mixtures of ingredients not covered by one single of the preceding main groups, each of these compounds being essential
- C08K13/06—Pretreated ingredients and ingredients covered by the main groups C08K3/00 - C08K7/00
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/346—Clay
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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
- C08K9/00—Use of pretreated ingredients
- C08K9/12—Adsorbed ingredients, e.g. ingredients on carriers
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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
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
- C08K2003/0806—Silver
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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
- C08L2203/00—Applications
- C08L2203/16—Applications used for films
Abstract
The invention discloses a kind of SiO2The preparation method of silver-colored anti-mildew fresh-keeping packaging bag is carried, belongs to Food Packaging technology field.With silver and SiO2Used as core anti-biotic material, silver ion is by Electrostatic Absorption in SiO2Particle surface, forms the SiO with economic benefits and social benefits antibacterial2Ag-carried antibacterial particle.Nano-antibacterial particle and attapulgite, vinyon master batch, coupling agent etc. are mixed into blown film and makes nano-antibacterial laminated film.The present invention adds the SiO of economic benefits and social benefits antibacterial in major ingredient vinyon master batch2Ag-carried antibacterial particle, wherein Ag can give the breeding that freshness protection package suppresses bacterium and fungi well, play a part of preservation and antisepsis.Nano-meter SiO_22Particle, can adjust the O in packaging bag by silicon oxygen bond2And CO2, so as to reach the effect of fresh-keeping, water conservation., for its edible safety is lifted, the loss for reducing food resource is significant for the anti-mildew fresh-keeping of food.The present invention has more preferable food mould-proof fresh-keeping effect.
Description
Technical field
The present invention relates to a kind of SiO2The preparation method of silver-colored anti-mildew fresh-keeping packaging bag is carried, the invention belongs to Food Packaging technology
Field.
Background technology
Nano packaging material refers to and nanometer particle is dispersed in flexible macromolecule polymer in the form of molecular level
In and the composite that formed, conventional nano material has metal (Ag, Zn etc.), metal oxide (TiO2Deng) and inorganic polymeric
Thing, conventional high molecular polymer have polyethylene (PE), polyvinyl chloride (PVC), polyamide (PA) etc..With the addition of the bag of nano-particle
The physical property of package material, mechanical property and ventilative, penetrability, stability, antibiotic property, freshness etc. are greatly improved.Especially
It is nano antibacterial agent, such as Ag can suppress growing for bacterium and fungi well, play a part of preservation and antisepsis.Nano-powder silver is to receive
A kind of contact class inorganic antiseptic commonly used in rice packaging material, when certain density silver particles are adsorbed onto on microbial body,
Silver particles can be combined by the mercapto alcohol with protein makes protein denaturation, so as to disturbing the normal physiological function of microorganism, reaching
To the effect of antibacterial sterilizing.It is appropriate in nano antibacterial film coating to add nano silica particle, using silicon oxygen bond to O2And CO2Expansion
Dissipate, discharge and absorption, dissolution, CO inside and outside adjusting film2And O2Exchange capacity, so as to reach the effect of fresh-keeping, water conservation.
In recent years, nanometer technology achieves quickly development in food industries chain.In food processing process, addition
Nano particle is little with its size, and specific surface area is big and the characteristics of high surface-active, can effectively improve the taste of food, improve food
Quality and color, improve food in the absorbed probability of nutrient content, be that the health of people brings benefit；In packaging for foodstuff row
Industry, nano composite material with the characteristics of its good anti-bacterial effect, high mechanical strength, strong obstructing capacity on Modern food package market
Achieve fast development.
The advantageous property of nano packaging material makes which very popular in food packaging applications, in green tea, persimmon fruit, Xiaoqinling Nature Reserve etc.
Application report gradually increase.But research of the nano preservative film in rice anti-mildew fresh-keeping is rarely reported.Report display according to investigations,
World food is accounted for 25% by mould contamination, and at least 2% grain can not be eaten because going mouldy every year.Wherein, China it is annual because
Up to more than 2,500,000,000 kilograms of the grain for going mouldy and losing.Therefore, Prevention of Mould Development is always the important of packaging for foodstuff storing field and grinds
Study carefully direction.Characteristic with reference to nano material is prepared the nano-packaging bag of economic benefits and social benefits antibacterial, for the mould proof of food by this research
The research of fresh-keeping effect.
The content of the invention
Technical problem
The present invention relates to a kind of SiO2Carry silver-colored anti-mildew fresh-keeping packaging bag, it is characterised in that：With silver and SiO2As core antibacterial
Material, mixes blown film with attapulgite, vinyon master batch, coupling agent etc. and makes nano-antibacterial laminated film.With the addition of and receive
The physical property of the packaging material of rice corpuscles, mechanical property and ventilative, penetrability, stability, antibiotic property, freshness etc. have significantly
Improve.SiO will be with the addition of2The nanometer freshness protection package of Ag-carried antibacterial particle is for the research to food mould-proof antibacterial.
Technical scheme
The technical solution adopted for the present invention to solve the technical problems step is：
A kind of SiO2The preparation method of silver-colored anti-mildew fresh-keeping packaging bag is carried, is carried out as steps described below：
1、SiO2The preparation of Ag-carried antibacterial particle：
(A) prepare silver ammino solution
Silver nitrate is weighed, ultra-pure water is dissolved in, is stirred and evenly mixed, concentration is configured to for 2.14mg/ml silver nitrate solutiones；According to
Volume ratio is 1:9 take certain silver nitrate solution, plus ultra-pure water is diluted to solution, ammoniacal liquor is added dropwise and obtains 200ppm silver ammino solutions.
(B) SiO is added in silver ammino solution obtained above2Nanometer powder, and put；Wherein
SiO2Nanometer powder is 0.085 with the quality and volume ratio of silver ammino solution:50(g/mL).
(C) vibration is centrifuged after terminating to take out；Centrifugation is taken out sediment after terminating and is air-dried, you can obtain SiO2Carry silver anti-
Bacterium particle.
2nd, by SiO2Ag-carried antibacterial particle as core anti-biotic material, with attapulgite, vinyon master batch, coupling agent
Nano-antibacterial laminated film is made Deng mixing blown film.
Wherein described SiO2Ag-carried antibacterial particle：Attapulgite：Vinyon master batch:The mass ratio of coupling agent is 8:
5:50:2(g)。
A kind of above-mentioned SiO2Carry the preparation method of silver-colored anti-mildew fresh-keeping packaging bag, wherein SiO2The preparation of Ag-carried antibacterial particle, leads to
Cross silver ion to adsorb in SiO under electrostatic interaction2On particle, economic benefits and social benefits antimicrobial particle is obtained.
A kind of above-mentioned SiO2The preparation method for carrying silver-colored anti-mildew fresh-keeping packaging bag obtains SiO2Carry silver-colored anti-mildew fresh-keeping packaging bag.
Beneficial effect
The present invention is with Ag and SiO2Used as core material, silver ion is adsorbed in SiO by electrostatic force2On particle surface, formed
SiO2Ag-carried antibacterial particle.Emphasis is by changing SiO2Surface charge properties, make Ag+SiO can be uniformly distributed in2Lattice dislocation
In, so as to improve Ag+Stability.Ag can suppress the propagation of bacterium and fungi well, play a part of preservation and antisepsis.Silver granuel
When son is adsorbed onto on microbial body, silver particles can be combined by the mercapto alcohol with protein makes protein denaturation, micro- so as to disturb
The normal physiological function of biology, the effect for reaching antibacterial sterilizing.Nano Si 02Particle, its silicon oxygen bond is to O2And CO2With diffusion,
Release and absorption, dissolution, adjust CO inside and outside packaging bag2And O2Exchange capacity, so as to reach the effect of fresh-keeping, water conservation.
Compared with common nano-packaging bag, SiO is with the addition of2Nano-packaging bag prepared by Ag-carried antibacterial particle, its antibiotic property
More preferably, the inhibition of mould is become apparent from.And with the addition of the physical property of the packaging material of nano-particle, mechanical property and
Ventilative, penetrability, stability etc. are greatly improved.
Specific embodiment
The principle and feature of the present invention are described with reference to example in detail below, example is served only for explaining this
It is bright, it is not intended to limit the scope of the present invention.
Embodiment 1：
535mg silver nitrates are weighed, 250ml ultra-pure waters is dissolved in, is stirred and evenly mixed.10ml silver nitrate solutiones are taken out, plus it is ultrapure
Water is diluted to 100ml solution, and ammoniacal liquor is added dropwise under ph analyzers, is tuned into the 200ppm silver ammino solutions of ph=11.5.Weigh
The SiO of 0.085g2Nanometer powder, adds silver ammino solution, puts.Centrifuge, rotating speed are put into after taking-up
18000g is centrifuged 30min.Centrifugation takes out sample after terminating, and pours out supernatant, takes out sediment and air-dries, you can obtains SiO2Carry silver
Antimicrobial particle.By SiO2Ag-carried antibacterial particle 160g as core anti-biotic material, with attapulgite 100g, vinyon master batch
The mixing blown film such as 1000g, coupling agent 40g makes 100 μm of nano-antibacterial laminated film.
Normal packet is packed by experiment and SiO2The physical property of nano-packaging bag prepared by Ag-carried antibacterial particle and thoroughly
Gas, penetrability are determined.
1st, quantitative measurement
By the measure to two kinds of nano-packaging bag tensile strengths, oxygen transmission rate, saturating carbon dioxide rate and rate of perviousness, as a result such as
Shown in table 1 below, its SiO2The tensile strength and adaptability to changes of nano-packaging bag prepared by Ag-carried antibacterial particle increases, oxygen flow, saturating two
Carbonoxide and rate of perviousness are all obviously reduced, just explanation SiO2Nano-packaging bag prepared by Ag-carried antibacterial particle has good choke
Block-water performance, is conducive to fresh-keeping, water conservation to food.
1 physical performance index of table
2nd, Stability Determination
Acetic acid solution and 50% ethanol solution respectively from 3% is placed on SiO as simulated solution2Ag-carried antibacterial particle
The nano-packaging bag of preparation, determines the mobility of packaging bag different time silver under the conditions of 37 DEG C and 50 DEG C, the initial content of silver
For 17.59mg kg-1.According to following table it can be seen that at 37 DEG C, in acetic acid solution, the migration amount of silver is maximum, and mobility is 1.8%.
So the migration amount of Ag is very little, show SiO2Nano-packaging bag prepared by Ag-carried antibacterial particle has good stability.
2 Stability Determination of table
3rd, antibiotic property is determined
Will made by nano-antibacterial combined package bag and common nano-packaging bag take one piece and shred and be added to rose-bengal training
In foster base, and mould is inoculated with the medium, two culture dishes of mark are N1 and N2 respectively, cultivate 24h in being placed on incubator
Observation is counted.As a result statistics shows that mold colony number is 4.8logcfug in N1-1, and mold colony number is 8.4log in N2
cfug-1.It can be seen that the antibiotic property of newly formed nano-antibacterial combined package bag is better than common nano-packaging bag.
To sum up SiO2Nano-packaging bag prepared by Ag-carried antibacterial particle, its antibiotic property more preferably, physical property, mechanical property and
Ventilative, penetrability, stability etc. are greatly improved.
Embodiment 2：
535mg silver nitrates are weighed, 250ml ultra-pure waters is dissolved in, is stirred and evenly mixed.10ml silver nitrate solutiones are taken out, plus it is ultrapure
Water is diluted to 100ml solution, and ammoniacal liquor is added dropwise under ph analyzers, is tuned into the 200ppm silver ammino solutions of ph=10.5.Weigh
The SiO of 0.095g2Nanometer powder, adds silver ammino solution, puts.Centrifuge, rotating speed are put into after taking-up
18000g is centrifuged 30min.Centrifugation takes out sample after terminating, and pours out supernatant, takes out sediment and air-dries, you can obtains SiO2Carry silver
Antimicrobial particle.By SiO2Ag-carried antibacterial particle as core anti-biotic material, with attapulgite, vinyon master batch, coupling agent
Nano-antibacterial laminated film is made Deng mixing blown film.
Claims (4)
1. a kind of SiO2 carries the preparation method of silver-colored anti-mildew fresh-keeping packaging bag, it is characterised in that carry out as steps described below：
（1）The preparation of SiO2 Ag-carried antibacterial particles：
（A）Prepare silver ammino solution
Silver nitrate is weighed, ultra-pure water is dissolved in, is stirred and evenly mixed, concentration is configured to for 2.14 mg/ ml silver nitrate solutiones；According to
Volume ratio is 1:9 take certain silver nitrate solution, plus ultra-pure water is diluted to solution, ammoniacal liquor is added dropwise and obtains 200ppm silver ammino solutions；
（B）SiO2 nanometer powders are added in silver ammino solution obtained above, and is put；Wherein SiO2
Nanometer powder is 0.085 with the quality and volume ratio of silver ammino solution:50（g/mL）；
（C）Vibration is centrifuged after terminating to take out；Centrifugation is taken out sediment after terminating and is air-dried, you can obtain SiO2 Ag-carried antibacterial grains
Son；
（2）Using SiO2 Ag-carried antibacterials particle as core anti-biotic material, with attapulgite, vinyon master batch, coupling agent etc.
Mixing blown film makes nano-antibacterial laminated film.
2. a kind of SiO2 according to claim 1 carries the preparation method of silver-colored anti-mildew fresh-keeping packaging bag, it is characterised in that wherein
Described SiO2 Ag-carried antibacterial particles：Attapulgite：Vinyon master batch:The mass ratio of coupling agent is 8:5:50:2(g).
3. a kind of SiO2 according to claim 1 carries the preparation method of silver-colored anti-mildew fresh-keeping packaging bag, it is characterised in that wherein
SiO2The preparation of Ag-carried antibacterial particle, is adsorbed in SiO under electrostatic interaction by silver ion2On particle, economic benefits and social benefits antibacterial grain is obtained
Son.
4. a kind of preparation method of the silver-colored anti-mildew fresh-keeping packaging bag of SiO2 loads according to claim 1 prepares SiO2Carry silver
Anti-mildew fresh-keeping packaging bag.
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| CN201610961203.6A CN106543540A (en) | 2016-10-28 | 2016-10-28 | A kind of SiO2Carry the preparation method of silver-colored anti-mildew fresh-keeping packaging bag |
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| CN201610961203.6A CN106543540A (en) | 2016-10-28 | 2016-10-28 | A kind of SiO2Carry the preparation method of silver-colored anti-mildew fresh-keeping packaging bag |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107383542A (en) * | 2017-08-15 | 2017-11-24 | 安徽华猫软包装有限公司 | A kind of mildewproof plastics packaging bag and preparation method thereof |
| CN108084544A (en) * | 2017-12-30 | 2018-05-29 | 浙江工业大学 | A kind of composite antibacterial membrane material and preparation method thereof |
| CN111073115A (en) * | 2019-12-31 | 2020-04-28 | 江阴市鑫顺塑料制品有限公司 | Preparation method of efficient mildew-proof and bacteria-proof polyethylene film |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107383542A (en) * | 2017-08-15 | 2017-11-24 | 安徽华猫软包装有限公司 | A kind of mildewproof plastics packaging bag and preparation method thereof |
| CN108084544A (en) * | 2017-12-30 | 2018-05-29 | 浙江工业大学 | A kind of composite antibacterial membrane material and preparation method thereof |
| CN111073115A (en) * | 2019-12-31 | 2020-04-28 | 江阴市鑫顺塑料制品有限公司 | Preparation method of efficient mildew-proof and bacteria-proof polyethylene film |
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Application publication date: 20170329 |