CN107629303A - Add the preparation method of the degradable nano packaging film of modified nano montmorillonite - Google Patents
Add the preparation method of the degradable nano packaging film of modified nano montmorillonite Download PDFInfo
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- CN107629303A CN107629303A CN201710873707.7A CN201710873707A CN107629303A CN 107629303 A CN107629303 A CN 107629303A CN 201710873707 A CN201710873707 A CN 201710873707A CN 107629303 A CN107629303 A CN 107629303A
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Abstract
The invention discloses the preparation method of the degradable nano packaging film of addition modified nano montmorillonite, nano montmorillonite is first placed in reaction vessel and is well mixed by this method with thionyl chloride, it is reacted to obtain the nano montmorillonite of chloride, again with triethylamine react, washing is dried to obtain modified nano montmorillonite after being separated by filtration, then prepare the microcrystalline cellulose aqueous solution, add thereto by ethylene vinyl acetate copolymer, polyester terephthalate, the mixture that nano-calcium carbonate is formed, chilling after heating response, ultrasound obtains the preliminary hybrid reaction material of packaging film, again by the preliminary hybrid reaction material of packaging film, modified nano montmorillonite, dibutyl tin laurate, plasticizer mixes, blown film after extruding pelletization, obtain degradable nano packaging film.The degradable nano packaging film for the addition modified nano montmorillonite being prepared, degradation effect is excellent, and high mechanical strength, has preferable application prospect.
Description
Technical field
The present invention relates to this technical field of nano material, is related specifically to addition the degradable of modified nano montmorillonite and receives
The preparation method of rice packaging film.
Background technology
Plastics are a kind of good high polymer materials of plasticity, use it for packaging field, with traditional packaging material phase
Than plastic package material has its unique performance.Each based packaging material being made of plastics, such as plastic foil, polybag, Plastic Drum
With chest, plastic bottle and tank and compound package material etc., it is widely used in food packaging applications, for protecting commodity storing up
Fortune, sale, consumption etc. not by various unfavorable conditions and environmental disruption and influence, lift the use value of commodity in the process of circulation,
Market is in rising trend year by year to packaging material demand.Why plastic package material can be widely used in packaging for foodstuff
In, it is because plastic bag is equipped with its unique good characteristic, such as excellent physical and mechanical property, good chemical stability is light,
Processing forming is good, good appearance, easily coloring etc..But the safe and healthy performance of some plastic materials is poor, while it is wrapped
Large effect can be produced to environment again by filling discarded object, be made so as to have impact on plastic package material in some food packaging applications
With.
Montmorillonite also known as montmorillonite or montmorillonite, are a kind of alumino-silicates, and its main component is octahedra montmorillonite
Particulate.Montmorillonite organic complex is made using its cation exchange property, is widely used in high gentle fat, rubber, plastics, oil
Paint；Using its absorption property, for edible oil refinery decolorization except poison, purification oil, nuclear waste disposal, sewage disposal；It is viscous using it
Knot property can make casting sand binding agent etc.；Disperse suspension using it and be used for drilling mud.
Nano material is broadly divided into the class of nanometer powder, nanofiber, nanometer film, nano block etc. four.Wherein nano powder
The last development time is most long, technology is the most ripe, is the basis for producing other three classes products.Nanometer film is divided into membrana granulosa and densification
Film.Membrana granulosa is that nano particle sticks together, and there is the film in extremely tiny gap centre.Dense film refers to film layer densification but crystal grain
Size is nano level film.It can be used for：Gas catalysis (such as vehicle maintenance service) material；Filter material；High density magnetic is remembered
Record material；Light-sensitive material；Flat-panel screens material；Superconductor etc..Nanometer technology fundamental research and new material exploitation etc.
Application study is obtained for quick development, and is obtained in industries such as traditional material, medical equipment, electronic equipment, coating
It is widely applied.Several products such as nano-calcium carbonate, nano zine oxide, nano silicon oxide in nano-powder material have formed one
Fixed market scale；The materials such as the extensive nano ceramic material of application of nanopowder, nano-textile material, nanocomposite coatings
It has been succeeded in developing that, and tentatively realize industrialization production.
The content of the invention
In order to solve the environmental problem of conventional plastic packaging material, the present invention provides dropping for addition modified nano montmorillonite
The preparation method of nano-packaging film is solved, nano montmorillonite is first placed in reaction vessel and is well mixed by this method with thionyl chloride,
It is reacted to obtain the nano montmorillonite of chloride, then with triethylamine react, after being separated by filtration washing be dried to obtain modified Nano illiteracy
De- stone, then prepares the microcrystalline cellulose aqueous solution, adds thereto by ethylene-vinyl acetate copolymer, poly terephthalic acid
The mixture that ester, nano-calcium carbonate are formed, chilling, ultrasound obtain the preliminary hybrid reaction material of packaging film after heating response, then will
The preliminary hybrid reaction material of packaging film, modified nano montmorillonite, dibutyl tin laurate, plasticizer mixing, extruding pelletization after-blow
Film, obtain degradable nano packaging film.The degradable nano packaging film for the addition modified nano montmorillonite being prepared, degraded effect
Fruit is excellent, and high mechanical strength, has preferable application prospect.
The purpose of the present invention can be achieved through the following technical solutions：
The preparation method of the degradable nano packaging film of modified nano montmorillonite is added, its step is as follows：
(1) it is 1 according to weight ratio:15 weigh nano montmorillonite and thionyl chloride, are placed in reaction vessel and are well mixed, add
Enter DMF as solvent, 24h is reacted at 80-90 DEG C, reaction is evaporated under reduced pressure after terminating and removes excessive thionyl chloride, obtains acyl
The nano montmorillonite of chlorination, the triethylamine of quality such as add, 12h is reacted at 150 DEG C, is then separated by filtration, and will be obtained
Filtration product washed 3-5 times through ethanol, then vacuum dried obtain modified nano montmorillonite；
(2) in ice-water bath, microcrystalline cellulose is added to the water be made 5% the microcrystalline cellulose aqueous solution, then according to
Every liter of microcrystalline cellulose aqueous solution addition 2g addition is added by ethylene-vinyl acetate copolymer under stirring, gathered
The mixture that terephthalate, nano-calcium carbonate are formed, 150 DEG C of insulation reaction 2.5h are warming up to, in ice after chilling cooling
Ultrasonic 45min in water-bath, potassium hydroxide is added dropwise and adjusts pH value to 8.0, obtains the preliminary hybrid reaction material of packaging film；
(3) by preliminary hybrid reaction material 25-30 parts of packaging film obtained by step (2), modified nano montmorillonite 18-22 parts,
Dibutyl tin laurate 10-15 parts, plasticizer 3-6 parts are placed in high-speed mixer, according to 1200r/min under the conditions of 85 DEG C
Speed mixed at high speed 30min, obtain packaging film end hybrid reaction material；
(4) packaging film end hybrid reaction material obtained by step (3) is sent into double screw extruder, extruder temperature is set as
210 DEG C, extruding pelletization is carried out by mouth mold and pelleter, forms packaging film pellet；
(5) packaging film pellet is subjected to blown film by blow moulding machine, degradable nano packaging film is made.
Preferably, step (2) ethylene-vinyl acetate copolymer, polyester terephthalate, the mass ratio of nano-calcium carbonate
Preferably 9:4:3.
Preferably, plasticizer is a kind of several in glycerine, epoxidized soybean oil, sorbierite in step (3).
Preferably, when in step (5) using blow moulding machine blown film, the blow-up ratio of blow moulding machine is 3.5, and blown film temperature is 200-
220℃。
Preferably, the width of the nano-packaging film finished product is 450-550mm, thickness 0.03-0.04mm.
Compared with prior art, its advantage is the present invention：
(1) preparation method of the degradable nano packaging film of addition modified nano montmorillonite of the invention, first covers nanometer
De- stone is placed in reaction vessel with thionyl chloride to be well mixed, reacted to obtain the nano montmorillonite of chloride, then with triethylamine
Reaction, washed after being separated by filtration and be dried to obtain modified nano montmorillonite, then prepared the microcrystalline cellulose aqueous solution, add thereto
The mixture being made up of ethylene-vinyl acetate copolymer, polyester terephthalate, nano-calcium carbonate, it is anxious after heating response
It is cold, ultrasonic to obtain the preliminary hybrid reaction material of packaging film, then by the preliminary hybrid reaction material of packaging film, modified nano montmorillonite, February
Dilaurylate, plasticizer mix, and blown film after extruding pelletization, obtain degradable nano packaging film.The addition being prepared changes
The degradable nano packaging film of property nano montmorillonite, degradation effect is excellent, and high mechanical strength, has preferable application prospect.
(2) degradable nano of addition modified nano montmorillonite of the invention pack film raw material be easy to get, technique it is simple, be suitable to
Heavy industrialization uses, practical.
Embodiment
The technical scheme of invention is described in detail with reference to specific embodiment.
Embodiment 1
(1) it is 1 according to weight ratio:15 weigh nano montmorillonite and thionyl chloride, are placed in reaction vessel and are well mixed, add
Enter DMF as solvent, 24h is reacted at 85 DEG C, reaction is evaporated under reduced pressure after terminating and removes excessive thionyl chloride, obtains chloride
Nano montmorillonite, the triethylamine of quality such as add, 12h reacted at 150 DEG C, is then separated by filtration, and the mistake that will be obtained
Filter product to wash 3-5 times through ethanol, then vacuum dried obtain modified nano montmorillonite；
(2) in ice-water bath, microcrystalline cellulose is added to the water be made 5% the microcrystalline cellulose aqueous solution, then according to
Every liter of microcrystalline cellulose aqueous solution addition 2g addition is added by ethylene-vinyl acetate copolymer under stirring, gathered
Terephthalate, nano-calcium carbonate are according to mass ratio 9:4:3 mixtures formed, 150 DEG C of insulation reaction 2.5h are warming up to,
Ultrasonic 45min, dropwise addition potassium hydroxide adjust pH value to 8.0, it is anti-to obtain packaging film tentatively mixing in ice-water bath after chilling cooling
It should expect；
(3) by 25 parts of the preliminary hybrid reaction material of packaging film obtained by step (2), 22 parts of modified nano montmorillonite, two bays
Sour 10 parts of dibutyl tin, 6 parts of epoxidized soybean oil are placed in high-speed mixer, according to 1200r/min speed under the conditions of 85 DEG C
Mixed at high speed 30min, obtain packaging film end hybrid reaction material；
(4) packaging film end hybrid reaction material obtained by step (3) is sent into double screw extruder, extruder temperature is set as
210 DEG C, extruding pelletization is carried out by mouth mold and pelleter, forms packaging film pellet；
(5) packaging film pellet is subjected to blown film by blow moulding machine, the blow-up ratio of blow moulding machine is 3.5, and blown film temperature is 210
DEG C, degradable nano packaging film is made.
Comparative example 1
(1) it is 1 according to weight ratio:15 weigh montmorillonite and thionyl chloride, are placed in reaction vessel and are well mixed, and add
DMF reacts 24h, reaction is evaporated under reduced pressure after terminating and removes excessive thionyl chloride, obtains chloride as solvent at 85 DEG C
Montmorillonite, the triethylamine of quality such as add, 12h is reacted at 150 DEG C, is then separated by filtration, and the filtration product that will be obtained
Through ethanol wash 3-5 times, then it is vacuum dried obtain it is modified montmorillonite used；
(2) in ice-water bath, microcrystalline cellulose is added to the water be made 5% the microcrystalline cellulose aqueous solution, then according to
Every liter of microcrystalline cellulose aqueous solution addition 2g addition is added by ethylene-vinyl acetate copolymer under stirring, gathered
Terephthalate, nano-calcium carbonate are according to mass ratio 9:4:3 mixtures formed, 150 DEG C of insulation reaction 2.5h are warming up to,
Ultrasonic 45min, dropwise addition potassium hydroxide adjust pH value to 8.0, it is anti-to obtain packaging film tentatively mixing in ice-water bath after chilling cooling
It should expect；
(3) by 25 parts of the preliminary hybrid reaction material of packaging film, 22 parts of nano montmorillonite, the tin dilaurate two obtained by step (2)
10 parts of butyl tin, 6 parts of epoxidized soybean oil are placed in high-speed mixer, according to 1200r/min speed high speed under the conditions of 85 DEG C
30min is mixed, obtains packaging film end hybrid reaction material；
(4) packaging film end hybrid reaction material obtained by step (3) is sent into double screw extruder, extruder temperature is set as
210 DEG C, extruding pelletization is carried out by mouth mold and pelleter, forms packaging film pellet；
(5) packaging film pellet is subjected to blown film by blow moulding machine, the blow-up ratio of blow moulding machine is 3.5, and blown film temperature is 210
DEG C, degradable nano packaging film is made.
Comparative example 2
(1) it is 1 according to weight ratio:15 weigh nano montmorillonite and thionyl chloride, are placed in reaction vessel and are well mixed, add
Enter DMF as solvent, 24h is reacted at 85 DEG C, reaction is evaporated under reduced pressure after terminating and removes excessive thionyl chloride, obtains chloride
Nano montmorillonite, the triethylamine of quality such as add, 12h reacted at 150 DEG C, is then separated by filtration, and the mistake that will be obtained
Filter product to wash 3-5 times through ethanol, then vacuum dried obtain modified nano montmorillonite；
(2) in ice-water bath, microcrystalline cellulose is added to the water be made 5% the microcrystalline cellulose aqueous solution, then according to
Every liter of microcrystalline cellulose aqueous solution addition 2g addition is added by polyester terephthalate, nano-calcium carbonate under stirring
According to mass ratio 4:3 mixtures formed, 150 DEG C of insulation reaction 2.5h are warming up to, it is ultrasonic in ice-water bath after chilling cooling
45min, potassium hydroxide is added dropwise and adjusts pH value to 8.0, obtains the preliminary hybrid reaction material of packaging film；
(3) by 25 parts of the preliminary hybrid reaction material of packaging film obtained by step (2), 22 parts of modified nano montmorillonite, two bays
Sour 10 parts of dibutyl tin, 6 parts of epoxidized soybean oil are placed in high-speed mixer, according to 1200r/min speed under the conditions of 85 DEG C
Mixed at high speed 30min, obtain packaging film end hybrid reaction material；
(4) packaging film end hybrid reaction material obtained by step (3) is sent into double screw extruder, extruder temperature is set as
210 DEG C, extruding pelletization is carried out by mouth mold and pelleter, forms packaging film pellet；
(5) packaging film pellet is subjected to blown film by blow moulding machine, the blow-up ratio of blow moulding machine is 3.5, and blown film temperature is 210
DEG C, degradable nano packaging film is made.
Comparative example 3
(1) it is 1 according to weight ratio:15 weigh nano montmorillonite and thionyl chloride, are placed in reaction vessel and are well mixed, add
Enter DMF as solvent, 24h is reacted at 85 DEG C, reaction is evaporated under reduced pressure after terminating and removes excessive thionyl chloride, obtains chloride
Nano montmorillonite, the triethylamine of quality such as add, 12h reacted at 150 DEG C, is then separated by filtration, and the mistake that will be obtained
Filter product to wash 3-5 times through ethanol, then vacuum dried obtain modified nano montmorillonite；
(2) in ice-water bath, microcrystalline cellulose is added to the water be made 5% the microcrystalline cellulose aqueous solution, then according to
Every liter of microcrystalline cellulose aqueous solution addition 2g addition is added by ethylene-vinyl acetate copolymer under stirring, gathered
Terephthalate, nano-calcium carbonate are according to mass ratio 9:4:3 mixtures formed, 150 DEG C of insulation reaction 2.5h are warming up to,
Ultrasonic 45min, dropwise addition potassium hydroxide adjust pH value to 8.0, it is anti-to obtain packaging film tentatively mixing in ice-water bath after chilling cooling
It should expect；
(3) by 25 parts of the preliminary hybrid reaction material of packaging film, 22 parts of modified nano montmorillonite, the dibutyl obtained by step (2)
10 parts of tin oxide, 6 parts of epoxidized soybean oil are placed in high-speed mixer, according to 1200r/min speed high speed under the conditions of 85 DEG C
30min is mixed, obtains packaging film end hybrid reaction material；
(4) packaging film end hybrid reaction material obtained by step (3) is sent into double screw extruder, extruder temperature is set as
210 DEG C, extruding pelletization is carried out by mouth mold and pelleter, forms packaging film pellet；
(5) packaging film pellet is subjected to blown film by blow moulding machine, the blow-up ratio of blow moulding machine is 3.5, and blown film temperature is 210
DEG C, degradable nano packaging film is made.
The degradable nano packaging film of embodiment 1 and comparative example 1-3 obtained addition modified nano montmorillonite is distinguished
This several degradation property, tensile strength, elongation at break performance tests are carried out, the test result of gained is shown in Table 1.
Table 1
The preparation method of the degradable nano packaging film of the addition modified nano montmorillonite of the present invention, this method is first by nanometer
Montmorillonite is placed in reaction vessel with thionyl chloride and is well mixed, reacted to obtain the nano montmorillonite of chloride, then with three second
Amine reacts, and is washed after being separated by filtration and is dried to obtain modified nano montmorillonite, then prepare the microcrystalline cellulose aqueous solution, added thereto
Enter the mixture being made up of ethylene-vinyl acetate copolymer, polyester terephthalate, nano-calcium carbonate, after heating response
Chilling, ultrasound obtain the preliminary hybrid reaction material of packaging film, then by the preliminary hybrid reaction material of packaging film, modified nano montmorillonite, two
Dibutyl tin laurate, plasticizer mix, and blown film after extruding pelletization, obtain degradable nano packaging film.The addition being prepared
The degradable nano packaging film of modified nano montmorillonite, degradation effect is excellent, and high mechanical strength, before having preferably application
Scape.The degradable nano packaging film raw material of the addition modified nano montmorillonite of the present invention is easy to get, technique is simple, suitable for extensive work
Industryization is used, practical.
Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair
The equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks
Domain, it is included within the scope of the present invention.
Claims (5)
1. add the preparation method of the degradable nano packaging film of modified nano montmorillonite, it is characterised in that its step is as follows：
(1) it is 1 according to weight ratio:15 weigh nano montmorillonite and thionyl chloride, are placed in reaction vessel and are well mixed, and add
DMF reacts 24h, reaction is evaporated under reduced pressure after terminating and removes excessive thionyl chloride, obtains acyl chlorides as solvent at 80-90 DEG C
The nano montmorillonite of change, the triethylamine of quality such as add, 12h is reacted at 150 DEG C, is then separated by filtration, and will obtain
Filtration product is washed 3-5 times through ethanol, then vacuum dried obtains modified nano montmorillonite；
(2) in ice-water bath, microcrystalline cellulose is added to the water be made 5% the microcrystalline cellulose aqueous solution, then according to every liter
Microcrystalline cellulose aqueous solution addition 2g addition is added by ethylene-vinyl acetate copolymer under stirring, gathered to benzene
The mixture that dicarboxylic acid esters, nano-calcium carbonate are formed, 150 DEG C of insulation reaction 2.5h are warming up to, in ice-water bath after chilling cooling
Middle ultrasonic 45min, potassium hydroxide is added dropwise and adjusts pH value to 8.0, obtains the preliminary hybrid reaction material of packaging film；
(3) by preliminary hybrid reaction material 25-30 parts of packaging film obtained by step (2), modified nano montmorillonite 18-22 parts, February
Dilaurylate 10-15 parts, plasticizer 3-6 parts are placed in high-speed mixer, according to 1200r/min speed under the conditions of 85 DEG C
Rate mixed at high speed 30min, obtain packaging film end hybrid reaction material；
(4) packaging film end hybrid reaction material obtained by step (3) is sent into double screw extruder, extruder temperature is set as 210
DEG C, extruding pelletization is carried out by mouth mold and pelleter, forms packaging film pellet；
(5) packaging film pellet is subjected to blown film by blow moulding machine, degradable nano packaging film is made.
2. the preparation method of the degradable nano packaging film of addition modified nano montmorillonite as claimed in claim 1, its feature
It is：Step (2) ethylene-vinyl acetate copolymer, polyester terephthalate, the mass ratio of nano-calcium carbonate are preferably 9:4:3.
3. the preparation method of the degradable nano packaging film of addition modified nano montmorillonite as claimed in claim 1, its feature
It is：Plasticizer is a kind of several in glycerine, epoxidized soybean oil, sorbierite in step (3).
4. the preparation method of the degradable nano packaging film of addition modified nano montmorillonite as claimed in claim 1, its feature
It is：When in step (5) using blow moulding machine blown film, the blow-up ratio of blow moulding machine is 3.5, and blown film temperature is 200-220 DEG C.
5. the preparation method of the degradable nano packaging film of addition modified nano montmorillonite according to claim 1, it is special
Sign is：The width of the nano-packaging film finished product is 450-550mm, thickness 0.03-0.04mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116554711A (en) * | 2023-04-28 | 2023-08-08 | 广东省科学院生物与医学工程研究所 | Organic modified mica and preparation method and application thereof |
| CN116554711B (en) * | 2023-04-28 | 2024-06-07 | 广东省科学院生物与医学工程研究所 | Organic modified mica and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898323A (en) * | 2003-12-19 | 2007-01-17 | 伊斯曼化学公司 | Blends of aliphatic-aromatic copolyesters with ethylene-vinyl acetate copolymers |
-
2017
- 2017-09-25 CN CN201710873707.7A patent/CN107629303A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1898323A (en) * | 2003-12-19 | 2007-01-17 | 伊斯曼化学公司 | Blends of aliphatic-aromatic copolyesters with ethylene-vinyl acetate copolymers |
Non-Patent Citations (1)
| Title |
|---|
| 姚静主编: "《药用辅料应用指南》", 31 August 2011, 中国医药科技出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116554711A (en) * | 2023-04-28 | 2023-08-08 | 广东省科学院生物与医学工程研究所 | Organic modified mica and preparation method and application thereof |
| CN116554711B (en) * | 2023-04-28 | 2024-06-07 | 广东省科学院生物与医学工程研究所 | Organic modified mica and preparation method and application thereof |
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Application publication date: 20180126 |