CN105885435A - Method for preparing antibacterial composite packaging film - Google Patents
Method for preparing antibacterial composite packaging film Download PDFInfo
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- CN105885435A CN105885435A CN201410681186.1A CN201410681186A CN105885435A CN 105885435 A CN105885435 A CN 105885435A CN 201410681186 A CN201410681186 A CN 201410681186A CN 105885435 A CN105885435 A CN 105885435A
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- mixed solution
- solution
- hydrochloric acid
- tetraisopropoxy titanium
- titanium tetraisopropoxide
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Abstract
The invention discloses a method for preparing an antibacterial composite packaging film and belongs to the technical field of packaging materials. The method comprises the following steps: dissolving titanium tetraisopropoxide into anhydrous ethanol in accordance with that the mass ratio of the titanium tetraisopropoxide to the anhydrous ethanol is 1: 10, and adding hydrochloric acid, of which the mass percent is 80%, into the mixed solution in accordance with that the mass ratio of the hydrochloric acid to the titanium tetraisopropoxide is 2: 10; stirring the solution for 1 hour at the temperature of 30 DEG C to 50 DEG C, and standing the solution for 5 hours so as to precipitate out TiO2 anatase microcrystals; slowly adding zein into a TiO2 nanohydrolyzate in accordance with that the mass ratio of the zein to the titanium tetraisopropoxide is 1: 2 so as to form a mixed solution, adding glycerine, of which the mass is 25% to 40% that of the entire system, into the mixed solution, heating the mixed solution to the temperature of 50 DEG C to 70 DEG C, carrying out continuous stirring for 10 minutes, and carrying out heat preservation for 10 minutes; and pouring the mixed solution on a plastic sheet, and carrying out drying for 20 to 40 minutes at the temperature of 45 DEG C, thereby preparing the film. The antibacterial composite packaging film prepared by the method is natural and pollution-free, has high water resistance, is high in strength and is not prone to damage.
Description
Technical field
The invention belongs to packaging material field, be specifically related to a kind of antimicrobial packaging composite membrane.
Background technology
In prior art, antimicrobial packaging refers to add certain antiseptic in packaging material, makes antimicrobial component
By the microorganism of contact package material surface attachment and by suppressing its growth, breeding or directly being killed
Go out, thus extend a kind of active packing of Food Shelf-life.At present, petroleum resources plastics and nanometer are utilized
TiO2Though the antimicrobial compound film produced has good bulk properties, but cannot degrade, do not meet green bag
Dress, the requirement of protection environment；Utilize natural products and nano-TiO2The antimicrobial compound film produced, due to sky
So the most water-fast or weak resistance to water of product itself, the composite membrane made when packaged food easily from environment and food
Product absorb water, thus causes film strength relatively low.
Summary of the invention
It is an object of the invention to provide the preparation method of a kind of antimicrobial packaging composite membrane so that prepared is antibacterial
Packaging composite film is natural pollution-free, has enhanced water resistance, and intensity height is hardly damaged.
The object of the present invention is achieved like this: the preparation method of a kind of antimicrobial packaging composite membrane, including such as
Lower step:
1) tetraisopropoxy titanium is dissolved by the amount of the material pressing tetraisopropoxy titanium and absolute ethyl alcohol than 1: 10
In absolute ethyl alcohol, in mixed liquor, add the hydrochloric acid of mass fraction 80%, hydrochloric acid and tetraisopropoxide
The amount ratio of the material of titanium is 2: 10；
2) at 30～50 DEG C, above-mentioned solution is stirred 1h, stand solution 5h, be settled out TiO2Sharp titanium
Ore deposit crystallite；
3) take zeins and be slowly added to TiO2Nanometer hydrolyzate is formed mixed solution, corn alcohol
The mass ratio of molten albumen and tetraisopropoxy titanium is 1: 2, adds whole system quality in mixed solution
The glycerine of 25%～40%, heating mixed liquor to 50～70 DEG C, continuously stirred 10min, be incubated 10min；
4) mixed solution is fallen on plastic sheet, be dried 20～40min at 45 DEG C, film forming.
As a further improvement on the present invention, described step 3) in glycerine account for the 33% of whole system quality,
Mixed liquor is heated to 60 DEG C.
As a further improvement on the present invention, described step 4) in mixed solution is dried 30min.
Compared with prior art, the beneficial effects of the present invention is: titanium dioxide is with zeins all
Can be dissolved in ethanol solution, nano-TiO2It is the inorganic nano material that research is the most active at present, has
The characteristics such as nontoxic, antibacterial and decomposing bacteria, antiultraviolet, super hydrophilic and super oleophylic, apply collosol and gel
Method prepares nanoscale TiO2Particle mixes in ethanol solution with zeins, and for preparing is antibacterial
Packaging composite film has stronger inhibitory action to Escherichia coli, natural pollution-free, has enhanced water resistance,
Intensity height is hardly damaged.The present invention may be used for antibacterial green packaging material, extend dairy products, fruits and vegetables,
The storage life of meat product, eliminates the white pollution that Traditional Packing brings.
Detailed description of the invention
The present invention is described in detail below in conjunction with specific embodiment.
The preparation method of a kind of antimicrobial packaging composite membrane, comprises the steps:
1) tetraisopropoxy titanium is dissolved by the amount of the material pressing tetraisopropoxy titanium and absolute ethyl alcohol than 1: 10
In absolute ethyl alcohol, in mixed liquor, add the hydrochloric acid of mass fraction 80%, hydrochloric acid and tetraisopropoxide
The amount ratio of the material of titanium is 2: 10；
2) at 30～50 DEG C, above-mentioned solution is stirred 1h, stand solution 5h, be settled out TiO2Sharp titanium
Ore deposit crystallite；
3) take zeins and be slowly added to TiO2Nanometer hydrolyzate is formed mixed solution, corn alcohol
The mass ratio of molten albumen and tetraisopropoxy titanium is 1: 2, adds whole system quality in mixed solution
The glycerine of 33%, heating mixed liquor to 60 DEG C, continuously stirred 10min, be incubated 10min；
4) mixed solution is fallen on plastic sheet, at 45 DEG C, be dried 30min, film forming.
The invention is not limited in above-described embodiment, on the basis of technical scheme disclosed by the invention, this
The technical staff in field is according to disclosed technology contents, it is not necessary to performing creative labour just can be to wherein
Some technical characteristics make some replace and deformation, these replace and deformation all at the protection model of the present invention
In enclosing.
Claims (3)
1. the preparation method of an antimicrobial packaging composite membrane, it is characterised in that comprise the steps:
1) than 1: 10, tetraisopropoxy titanium is dissolved in nothing by the amount of tetraisopropoxy titanium and the material of absolute ethyl alcohol
In water-ethanol, in mixed liquor, add the hydrochloric acid of mass fraction 80%, hydrochloric acid and the thing of tetraisopropoxy titanium
The amount ratio of matter is 2: 10；
2) at 30～50 DEG C, above-mentioned solution is stirred 1h, stand solution 5h, be settled out TiO2Anatase is micro-
Brilliant；
3) take zeins and be slowly added to TiO2Nanometer hydrolyzate is formed mixed solution, the molten egg of corn alcohol
White and tetraisopropoxy titanium mass ratio is 1: 2, adds whole system quality in mixed solution
The glycerine of 25%～40%, heating mixed liquor to 50～70 DEG C, continuously stirred 10min, be incubated 10min；
4) mixed solution is fallen on plastic sheet, be dried 20～40min at 45 DEG C, film forming.
The preparation method of a kind of antimicrobial packaging composite membrane the most according to claim 1, it is characterised in that: institute
State step 3) in glycerine account for the 33% of whole system quality, mixed liquor is heated to 60 DEG C.
The preparation method of a kind of antimicrobial packaging composite membrane the most according to claim 1, it is characterised in that: institute
State step 4) in mixed solution is dried 30min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681186.1A CN105885435A (en) | 2014-11-20 | 2014-11-20 | Method for preparing antibacterial composite packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681186.1A CN105885435A (en) | 2014-11-20 | 2014-11-20 | Method for preparing antibacterial composite packaging film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105885435A true CN105885435A (en) | 2016-08-24 |
Family
ID=56698742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410681186.1A Pending CN105885435A (en) | 2014-11-20 | 2014-11-20 | Method for preparing antibacterial composite packaging film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105885435A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112552693A (en) * | 2020-12-18 | 2021-03-26 | 山东大学 | Zein/titanium dioxide composite membrane and preparation method and application thereof |
-
2014
- 2014-11-20 CN CN201410681186.1A patent/CN105885435A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112552693A (en) * | 2020-12-18 | 2021-03-26 | 山东大学 | Zein/titanium dioxide composite membrane and preparation method and application thereof |
| CN112552693B (en) * | 2020-12-18 | 2022-03-15 | 山东大学 | Zein/titanium dioxide composite membrane and preparation method and application thereof |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160824 |