CN106633558A - Titanium-dioxide-doped bentonite/PVA (polyvinyl alcohol) bactericidal preservative film and preparation method thereof - Google Patents
Titanium-dioxide-doped bentonite/PVA (polyvinyl alcohol) bactericidal preservative film and preparation method thereof Download PDFInfo
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- CN106633558A CN106633558A CN201611251968.7A CN201611251968A CN106633558A CN 106633558 A CN106633558 A CN 106633558A CN 201611251968 A CN201611251968 A CN 201611251968A CN 106633558 A CN106633558 A CN 106633558A
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- bentonite
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- polyvinyl alcohol
- preservative film
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- 239000004372 Polyvinyl alcohol Substances 0.000 title claims abstract description 33
- 229920002451 polyvinyl alcohol Polymers 0.000 title claims abstract description 33
- 239000000440 bentonite Substances 0.000 title claims abstract description 30
- 229910000278 bentonite Inorganic materials 0.000 title claims abstract description 30
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000003755 preservative agent Substances 0.000 title abstract description 16
- 230000002335 preservative effect Effects 0.000 title abstract description 16
- 230000000844 anti-bacterial effect Effects 0.000 title abstract description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 28
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000010647 garlic oil Substances 0.000 claims abstract description 12
- 239000004925 Acrylic resin Substances 0.000 claims abstract description 10
- 229920000178 Acrylic resin Polymers 0.000 claims abstract description 10
- 239000000839 emulsion Substances 0.000 claims abstract description 10
- 240000002234 Allium sativum Species 0.000 claims abstract description 9
- 235000004611 garlic Nutrition 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims abstract description 7
- 229930006000 Sucrose Natural products 0.000 claims abstract description 7
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims abstract description 7
- 239000005720 sucrose Substances 0.000 claims abstract description 7
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims abstract description 4
- 239000008367 deionised water Substances 0.000 claims abstract description 4
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 29
- 230000001954 sterilising effect Effects 0.000 claims description 13
- 238000004659 sterilization and disinfection Methods 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 11
- 230000000996 additive effect Effects 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 9
- 235000019441 ethanol Nutrition 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 9
- 239000003643 water by type Substances 0.000 claims description 9
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 6
- HZUKSQHMCTUZJL-UHFFFAOYSA-N P(=O)(O)(O)OCC=1C(=C(C(=NC1)C)O)C=O.P(=O)(O)(O)OC=1C(=NC=C(C1C=O)CO)C Chemical compound P(=O)(O)(O)OCC=1C(=C(C(=NC1)C)O)C=O.P(=O)(O)(O)OC=1C(=NC=C(C1C=O)CO)C HZUKSQHMCTUZJL-UHFFFAOYSA-N 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 6
- 235000011187 glycerol Nutrition 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- -1 Sodium alkyl sulfonate Chemical class 0.000 claims description 3
- 229950005162 benexate Drugs 0.000 claims description 3
- 239000013590 bulk material Substances 0.000 claims description 3
- IAXUQWSLRKIRFR-SAABIXHNSA-N chembl2104696 Chemical compound C1C[C@@H](CNC(=N)N)CC[C@@H]1C(=O)OC1=CC=CC=C1C(=O)OCC1=CC=CC=C1 IAXUQWSLRKIRFR-SAABIXHNSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000002425 crystallisation Methods 0.000 claims description 3
- 239000006185 dispersion Substances 0.000 claims description 3
- 125000005909 ethyl alcohol group Chemical group 0.000 claims description 3
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 3
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- 238000000967 suction filtration Methods 0.000 claims description 3
- 238000002604 ultrasonography Methods 0.000 claims description 3
- 238000002137 ultrasound extraction Methods 0.000 claims description 3
- 238000001291 vacuum drying Methods 0.000 claims description 3
- 238000010792 warming Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 229920000858 Cyclodextrin Polymers 0.000 abstract description 3
- 239000000758 substrate Substances 0.000 abstract description 3
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002708 enhancing effect Effects 0.000 abstract 2
- SOQBVABWOPYFQZ-UHFFFAOYSA-N oxygen(2-);titanium(4+) Chemical compound [O-2].[O-2].[Ti+4] SOQBVABWOPYFQZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000001116 FEMA 4028 Substances 0.000 abstract 1
- 235000011175 beta-cyclodextrine Nutrition 0.000 abstract 1
- 229960004853 betadex Drugs 0.000 abstract 1
- 229960002089 ferrous chloride Drugs 0.000 abstract 1
- NMCUIPGRVMDVDB-UHFFFAOYSA-L iron dichloride Chemical compound Cl[Fe]Cl NMCUIPGRVMDVDB-UHFFFAOYSA-L 0.000 abstract 1
- NGVDGCNFYWLIFO-UHFFFAOYSA-N pyridoxal 5'-phosphate Chemical compound CC1=NC=C(COP(O)(O)=O)C(C=O)=C1O NGVDGCNFYWLIFO-UHFFFAOYSA-N 0.000 abstract 1
- 229960001327 pyridoxal phosphate Drugs 0.000 abstract 1
- 229940083575 sodium dodecyl sulfate Drugs 0.000 abstract 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 abstract 1
- 150000003568 thioethers Chemical class 0.000 abstract 1
- 241000894006 Bacteria Species 0.000 description 4
- 238000009395 breeding Methods 0.000 description 4
- 230000001488 breeding effect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000012010 growth Effects 0.000 description 4
- 244000005700 microbiome Species 0.000 description 3
- 150000002898 organic sulfur compounds Chemical class 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 2
- 241000233866 Fungi Species 0.000 description 2
- 235000012055 fruits and vegetables Nutrition 0.000 description 2
- 102000004169 proteins and genes Human genes 0.000 description 2
- 108090000623 proteins and genes Proteins 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- XUHLIQGRKRUKPH-GCXOYZPQSA-N Alliin Natural products N[C@H](C[S@@](=O)CC=C)C(O)=O XUHLIQGRKRUKPH-GCXOYZPQSA-N 0.000 description 1
- 235000004936 Bromus mango Nutrition 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 240000007228 Mangifera indica Species 0.000 description 1
- 235000014826 Mangifera indica Nutrition 0.000 description 1
- XUHLIQGRKRUKPH-UHFFFAOYSA-N S-allyl-L-cysteine sulfoxide Natural products OC(=O)C(N)CS(=O)CC=C XUHLIQGRKRUKPH-UHFFFAOYSA-N 0.000 description 1
- 235000009184 Spondias indica Nutrition 0.000 description 1
- 241000191967 Staphylococcus aureus Species 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- XUHLIQGRKRUKPH-DYEAUMGKSA-N alliin Chemical compound OC(=O)[C@@H](N)C[S@@](=O)CC=C XUHLIQGRKRUKPH-DYEAUMGKSA-N 0.000 description 1
- 235000015295 alliin Nutrition 0.000 description 1
- 238000005267 amalgamation Methods 0.000 description 1
- 230000000845 anti-microbial effect Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 229920002313 fluoropolymer Polymers 0.000 description 1
- 239000004811 fluoropolymer Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 230000009965 odorless effect Effects 0.000 description 1
- 210000003463 organelle Anatomy 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- FNIQKHXZAHAFCZ-UHFFFAOYSA-N phosphoric acid;1h-pyrrole Chemical compound C=1C=CNC=1.OP(O)(O)=O FNIQKHXZAHAFCZ-UHFFFAOYSA-N 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000241 respiratory effect Effects 0.000 description 1
- 210000001082 somatic cell Anatomy 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- PXQLVRUNWNTZOS-UHFFFAOYSA-N sulfanyl Chemical class [SH] PXQLVRUNWNTZOS-UHFFFAOYSA-N 0.000 description 1
- 230000010148 water-pollination Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L29/00—Compositions 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; Compositions of hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Compositions of derivatives of such polymers
- C08L29/02—Homopolymers or copolymers of unsaturated alcohols
- C08L29/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
-
- 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
- C08J2329/00—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
- C08J2329/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2329/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- 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
-
- 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
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Medicinal Preparation (AREA)
Abstract
The invention discloses a titanium-dioxide-doped bentonite/PVA (polyvinyl alcohol) bactericidal preservative film and a preparation method thereof. The invention is characterized in that the preservative film is prepared from the following raw materials in parts by weight: 2-4 parts of nano titanium dioxide, 20-30 parts of garlic spread, 50-60 parts of polyvinyl alcohol, 30-40 parts of acrylic resin emulsion, 1-2 parts of ferrous chloride, 2-3 parts of sucrose, 0.2-0.5 part of phosphopyridoxal, 15-25 parts of bentonite, 30-40 parts of beta-cyclodextrin, 2-5 parts of sodium dodecylsulfate, 2-3 parts of glycerol, 600-1000 parts of deionized water and 100-600 parts of anhydrous ethanol. The garlic oil is carried by the bentonite and included by the cyclodextrin, thereby solving the problem of pungent odor in organic sulfides, performing the slow-release function, prolonging the bactericidal life, enhancing the dispersity of the bentonite in the polyvinyl alcohol substrate, and enhancing the water resistance of the preservative film. The added nano titanium dioxide is matched to enhance the hydrophobicity of the preservative film.
Description
Technical field
The present invention relates to preservative film and preparation method thereof, and in particular to a kind of bentonite/PVA of titania additive is sterilized
Preservative film and preparation method thereof.
Background technology
Preservative film plays an important role in storage fruit and vegetable, different fruits and vegetables due to differences such as water content, respiratory intensities,
The requirement of the performances such as the air-moisture-permeable to preservative film is also different, and presently commercially available preservative film generally existing breathable moisture permeability is poor
The problems such as, due to containing substantial amounts of light base in PVA macromolecules, with extremely strong hydrophily, make PVA film water absorption rate very high, instead
And have impact on application of the PVA film in food fresh keeping.There are some researches show the small-size effect and Hong sight Liang Insurance roads of nano particle
Effect can have an effect with the unsaturated bond of fluoropolymer resin, greatly improve the performances such as resistance to water, the stability of resin material.
Garlic oil is the functional components formed after garlic crushes, and with high-efficiency broad spectrum antibacterial action, its principle is mainly
Using oxidation of the organic sulfur compound molecule to sulfydryl in protein molecule in garlic oil, give birth to the microorganisms such as bacterium, fungi
Enzyme-deactivating necessary to long breeding, so as to inhibit the growth and breeding of microorganism.Garlic oil can also be made by lipid oxidation
With the characteristic for changing somatic cells film and organelle film, bacterium vivo environment and membranous system are damaged and thalline is killed.In addition,
Garlic oil can also affect the dissolved oxygen amount in thalli growth breeding system, so as to the growing environment of thalline host carry out intervene and
Affect.In being introduced into preservative film, the sterilization fresh-keeping effect of preservative film will certainly be increased.
Yellow Hui honor is in its master thesis《The preparation of bentonite/PVA preservative films and its application in mango fresh-keeping are ground
Study carefully》In, a kind of preservative film is prepared for using bentonite and polyvinyl alcohol, but it does not possess bactericidal effect, while bentonite exists
Decentralization in polyvinyl alcohol need to be improved.
The content of the invention
Think deeply based on more than, the present invention is intended to provide a kind of sterilization fresh-keeping film, gives the function of common fresh-keeping membrane sterilization, together
The amalgamation of Shi Tigao modified particles and film substrate.
The technical problem to be solved is realized using following technical scheme：
The bentonite of a kind of titania additive/PVA sterilization fresh-keeping films, it is characterised in that be by the raw material system of following weight portion
Into：
Nano titanium oxide 2-4, mashed garlic 20-30, polyvinyl alcohol 50-60, emulsion acrylic resin 30-40, frerrous chloride 1-2,
Sucrose 2-3, phosphopyridoxal pyridoxal phosphate 0.2-0.5, bentonite 15-25, beta-schardinger dextrin 30-40, dodecyl sodium sulfate 2-5, glycerine 2-
3, deionized water 600-1000, absolute ethyl alcohol 100-600；
The solid content of the emulsion acrylic resin is 10-20%.
The preparation method of the bentonite of described a kind of titania additive/PVA sterilization fresh-keeping films, it is characterised in that be
It is made up of following steps：
A. mashed garlic is dispersed in 80-100 part deionized waters, adds frerrous chloride, sucrose, phosphopyridoxal pyridoxal phosphate, be in temperature
30-40 DEG C, pH is to digest under the conditions of 6-7 after 50-70min, adds 80-100 part absolute ethyl alcohols, ultrasonic extraction 40-60min to obtain
To the ethanol solution containing garlic oil；
B. bentonite is added in step a gained ethanol solution, high-speed stirred disperses bentonite, makes
Suspension, suspension is transferred in 40-80 DEG C of drying box, is fully dried, and obtains bulk material, then with pulverizer by block
Shape material disintegrating, crosses 100-200 mesh sieves, obtains the mixture of alta-mud load garlic oil；
C. by beta-schardinger dextrin add 200-300 part deionized waters in, stirring and dissolving, add step b gained mixture, 12
Sodium alkyl sulfonate, under the conditions of 20-40 DEG C, ultrasonic power 350-550W, carries out inclusion reaction 1-2h, then crystallisation by cooling, very
Empty suction filtration, several times, 20-40 DEG C of drying obtains Benexate Hydrochloride to filter residue absolute ethanol washing；
D. by nano titanium oxide 20-30 part absolute ethyl alcohol ultrasonic disperses, after being dried, with emulsion acrylic resin to its table
Face is sprayed, and is persistently stirred after 10-30min, is dried, and obtains mixture；
E. step c gained inclusion compound, step d gained mixture, glycerine are added in 100-200 part deionized waters, dispersion is equal
It is even to make suspension, polyvinyl alcohol is added, 80-95 DEG C is warming up to, ultrasonic 40-60min dissolves polyvinyl alcohol, continues ultrasound
30-50min excludes bubble, and mixed liquor is poured on poly (methyl methacrylate) plate, to use and stand 20- under scraper for coating film forming, room temperature by cooling
30h, is dried.
A kind of preparation method of the bentonite of described titania additive/PVA sterilization fresh-keeping films, it is characterised in that step
Suddenly drying condition described in e is：20-30h is dried in 40-50 DEG C of vacuum drying chamber.
The invention has the beneficial effects as follows：After garlic is broken, the alliin of odorless is in allinnase, phosphopyridoxal pyridoxal phosphate and gold
There is catalytic reaction under the synergy of category ion, the organic sulfur compound with overpowering odor is formed, to mercapto in protein molecule
The oxidation of base, makes enzyme-deactivating necessary to the microbial growths such as bacterium, fungi, so as to inhibit the growth of microorganism
And breeding；Garlic oil is loaded with bentonite, and is included with cyclodextrin, not only solved organic sulfur compound and there is thorn
The problem of sharp property smell, plays slow releasing function, extends its sterilized life-span, also improve bentonite in polyvinyl alcohol substrate point
Scattered property, promotes it to merge, and improves the resistance to water of preservative film；The nano titanium oxide for coordinating addition improves the hydrophobic of preservative film
Property.
Specific embodiment
The specific embodiment invented is further described with reference to embodiment.
Embodiment
The bentonite of a kind of titania additive/PVA sterilization fresh-keeping films, it is characterised in that be by the original of following weight portion
Material is made：
Nano titanium oxide 4, mashed garlic 30, polyvinyl alcohol 60, emulsion acrylic resin 40, frerrous chloride 2, sucrose 3, phosphoric acid pyrrole is trembled
Aldehyde 0.5, bentonite 25, beta-schardinger dextrin 40, dodecyl sodium sulfate 5, glycerine 3, deionized water 1000, absolute ethyl alcohol 600；
The solid content of the emulsion acrylic resin is 10-20%.
The preparation method of the bentonite of described a kind of titania additive/PVA sterilization fresh-keeping films, it is characterised in that be
It is made up of following steps：
A. mashed garlic is dispersed in 80-100 part deionized waters, adds frerrous chloride, sucrose, phosphopyridoxal pyridoxal phosphate, be in temperature
30-40 DEG C, pH is to digest under the conditions of 6-7 after 50-70min, adds 80-100 part absolute ethyl alcohols, ultrasonic extraction 40-60min to obtain
To the ethanol solution containing garlic oil；
B. bentonite is added in step a gained ethanol solution, high-speed stirred disperses bentonite, makes
Suspension, suspension is transferred in 40-80 DEG C of drying box, is fully dried, and obtains bulk material, then with pulverizer by block
Shape material disintegrating, crosses 100-200 mesh sieves, obtains the mixture of alta-mud load garlic oil；
C. by beta-schardinger dextrin add 200-300 part deionized waters in, stirring and dissolving, add step b gained mixture, 12
Sodium alkyl sulfonate, under the conditions of 20-40 DEG C, ultrasonic power 350-550W, carries out inclusion reaction 1-2h, then crystallisation by cooling, very
Empty suction filtration, several times, 20-40 DEG C of drying obtains Benexate Hydrochloride to filter residue absolute ethanol washing；
D. by nano titanium oxide 20-30 part absolute ethyl alcohol ultrasonic disperses, after being dried, with emulsion acrylic resin to its table
Face is sprayed, and is persistently stirred after 10-30min, is dried, and obtains mixture；
E. step c gained inclusion compound, step d gained mixture, glycerine are added in 100-200 part deionized waters, dispersion is equal
It is even to make suspension, polyvinyl alcohol is added, 80-95 DEG C is warming up to, ultrasonic 40-60min dissolves polyvinyl alcohol, continues ultrasound
30-50min excludes bubble, and mixed liquor is poured on poly (methyl methacrylate) plate, to use and stand 20- under scraper for coating film forming, room temperature by cooling
30h, is dried.
A kind of preparation method of the bentonite of described titania additive/PVA sterilization fresh-keeping films, it is characterised in that step
Suddenly drying condition described in e is：20-30h is dried in 40-50 DEG C of vacuum drying chamber.
The present invention properties of product test data be：To Escherichia coli and bacteria isolation rate >=85% of staphylococcus aureus,
Show preferable Antimicrobial effect.
Claims (3)
1. the bentonite of a kind of titania additive/PVA sterilization fresh-keeping films, it is characterised in that be by the raw material of following weight portion
Make：
Nano titanium oxide 2-4, mashed garlic 20-30, polyvinyl alcohol 50-60, emulsion acrylic resin 30-40, frerrous chloride 1-2,
Sucrose 2-3, phosphopyridoxal pyridoxal phosphate 0.2-0.5, bentonite 15-25, beta-schardinger dextrin 30-40, dodecyl sodium sulfate 2-5, glycerine 2-
3, deionized water 600-1000, absolute ethyl alcohol 100-600；
The solid content of the emulsion acrylic resin is 10-20%.
2. the preparation method of the bentonite of a kind of titania additive according to claim 1/PVA sterilization fresh-keeping films, its
It is characterised by, is made up of following steps：
A. mashed garlic is dispersed in 80-100 part deionized waters, adds frerrous chloride, sucrose, phosphopyridoxal pyridoxal phosphate, be in temperature
30-40 DEG C, pH is to digest under the conditions of 6-7 after 50-70min, adds 80-100 part absolute ethyl alcohols, ultrasonic extraction 40-60min to obtain
To the ethanol solution containing garlic oil；
B. bentonite is added in step a gained ethanol solution, high-speed stirred disperses bentonite, makes
Suspension, suspension is transferred in 40-80 DEG C of drying box, is fully dried, and obtains bulk material, then with pulverizer by block
Shape material disintegrating, crosses 100-200 mesh sieves, obtains the mixture of alta-mud load garlic oil；
C. by beta-schardinger dextrin add 200-300 part deionized waters in, stirring and dissolving, add step b gained mixture, 12
Sodium alkyl sulfonate, under the conditions of 20-40 DEG C, ultrasonic power 350-550W, carries out inclusion reaction 1-2h, then crystallisation by cooling, very
Empty suction filtration, several times, 20-40 DEG C of drying obtains Benexate Hydrochloride to filter residue absolute ethanol washing；
D. by nano titanium oxide 20-30 part absolute ethyl alcohol ultrasonic disperses, after being dried, with emulsion acrylic resin to its table
Face is sprayed, and is persistently stirred after 10-30min, is dried, and obtains mixture；
E. step c gained inclusion compound, step d gained mixture, glycerine are added in 100-200 part deionized waters, dispersion is equal
It is even to make suspension, polyvinyl alcohol is added, 80-95 DEG C is warming up to, ultrasonic 40-60min dissolves polyvinyl alcohol, continues ultrasound
30-50min excludes bubble, and mixed liquor is poured on poly (methyl methacrylate) plate, to use and stand 20- under scraper for coating film forming, room temperature by cooling
30h, is dried.
3. the preparation method of the bentonite of a kind of titania additive according to claim 2/PVA sterilization fresh-keeping films, its
It is characterised by, drying condition is described in step e：20-30h is dried in 40-50 DEG C of vacuum drying chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251968.7A CN106633558A (en) | 2016-12-30 | 2016-12-30 | Titanium-dioxide-doped bentonite/PVA (polyvinyl alcohol) bactericidal preservative film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611251968.7A CN106633558A (en) | 2016-12-30 | 2016-12-30 | Titanium-dioxide-doped bentonite/PVA (polyvinyl alcohol) bactericidal preservative film and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106633558A true CN106633558A (en) | 2017-05-10 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611251968.7A Withdrawn CN106633558A (en) | 2016-12-30 | 2016-12-30 | Titanium-dioxide-doped bentonite/PVA (polyvinyl alcohol) bactericidal preservative film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107624823A (en) * | 2017-09-29 | 2018-01-26 | 当涂县瑞龙果树种植专业合作社 | A kind of esterification soybean oil Synergistic herbicidal agents containing garlic oil and preparation method thereof |
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|---|---|---|---|---|
| CN1261605A (en) * | 1998-12-09 | 2000-08-02 | 可乐丽股份有限公司 | Vinyl alcohol polymer and its composition |
| CN102604292A (en) * | 2012-02-22 | 2012-07-25 | 湖南新五丰股份有限公司 | Active packaging film for chilled meat and preparation method of the active packaging film |
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2016
- 2016-12-30 CN CN201611251968.7A patent/CN106633558A/en not_active Withdrawn
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1261605A (en) * | 1998-12-09 | 2000-08-02 | 可乐丽股份有限公司 | Vinyl alcohol polymer and its composition |
| CN102604292A (en) * | 2012-02-22 | 2012-07-25 | 湖南新五丰股份有限公司 | Active packaging film for chilled meat and preparation method of the active packaging film |
Non-Patent Citations (1)
| Title |
|---|
| 王磊: "大蒜油的提取及抗菌保鲜膜的研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107624823A (en) * | 2017-09-29 | 2018-01-26 | 当涂县瑞龙果树种植专业合作社 | A kind of esterification soybean oil Synergistic herbicidal agents containing garlic oil and preparation method thereof |
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Application publication date: 20170510 |