CN107805335A - A kind of Antimicrobial preservative degredation plastic and preparation method thereof - Google Patents
A kind of Antimicrobial preservative degredation plastic and preparation method thereof Download PDFInfo
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- CN107805335A CN107805335A CN201711135507.8A CN201711135507A CN107805335A CN 107805335 A CN107805335 A CN 107805335A CN 201711135507 A CN201711135507 A CN 201711135507A CN 107805335 A CN107805335 A CN 107805335A
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
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- 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
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- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C08K3/22—Oxides; Hydroxides of metals
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- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
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- C08K2003/265—Calcium, strontium or barium carbonate
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- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- 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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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
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Abstract
The invention discloses a kind of Antimicrobial preservative degredation plastic and preparation method thereof, it is related to plastics preparing technical field.It is prepared from the following raw materials in parts by weight：20~40 parts of polyethylene, 15~25 parts of calcium carbonate, 2~8 parts of bamboo fibre, 12~20 parts of wood fibre, 15~25 parts of modified starch, 2~6 parts of potassium sorbate, chitosan 5~10,2~8 parts of titanium dioxide, 10~24 parts of ethanol, 2~6 parts of polyethylene glycol, 1~5 part of stearic acid Nitranitol, 1~3 part of acetic acid, 1~5 part of tributyl 2-acetylcitrate, 1~5 part of polyethylene glycol oxide, 1~3 part of OPE；Preparation method is：Polyethylene, bamboo fibre, wood fibre, modified starch are added in ethanol, then calcium carbonate, polyethylene glycol, polyethylene glycol oxide, OPE, stearic acid Nitranitol, tributyl 2-acetylcitrate are added, is mixed with chitin, acetic acid, potassium sorbate.The vinyon of the present invention has that degradable, plasticity is good, Antimicrobial preservative, suitable for the manufacture of various plastic products, the particularly manufacture for food containers.
Description
Technical field
The present invention relates to plastics preparing technical field, and in particular to a kind of Antimicrobial preservative degredation plastic and its preparation side
Method.
Background technology
At present, huge plastic manufacturing amount and discarded amount cause irreversible pollution to the environment that we depend on for existence
With destruction.In order to alleviate the in short supply of petroleum resources, the harm of white pollution is reduced, degradation plastic turns into researchers' concern
Focus.
Biodegradable plastic be administer plastic refuse environmental pollution and buffer petroleum resources contradiction effective way it
One, from the packaging bag of food to agricultural film, then the shell to electric equipment products, from non-returnable container, edible products to warp
Long durable products, biodegradable plastic just progressively substitute conventional plastic materials, and market prospects are very wide.It is it is reported that complete at present
The biodegradable plastic kind of ball research and development is existing tens kinds, and principal item has：The polyhydroxyalkanoate of microbial fermentation synthesis
(PHA, PHB, PHBV etc.), the PLA (PLA) of chemical synthesis, polycaprolactone, dihydric alcohol dicarboxylic acids aliphatic polyester (PBS),
Aliphatic/aromatic copolyester, CO2/ epoxy compounds composition copolymer (APC), polycaprolactone (PCL), polyvinyl alcohol (PVA) etc.,
Natural polymer starch plasticses and its biodegradable plastic blend, plastic alloy etc..Pilot scale is had been enter at present or batch is raw
The kind of production has a starch plasticses, PHA (PHB, PHBV, PHBH-HX etc.), PLA, PBS, APC, modified PVA, starch/PVA,
The plastic alloys such as PLA, PCL and blend etc..
Although research of the prior art to degradation material achieves certain achievement, available for polybag, plastic lunch box etc.
In the processing and manufacturing of various plastic products, but existing degradation material is most without the function of antibacterial, especially in degradable plastic
Material is as food containers when processing raw material, if has antibacterial functions particularly important.
The content of the invention
The technical problems to be solved by the invention are the shortcomings that overcoming above prior art：One kind is provided with antibacterial to prevent
Rotten and biodegradable green plastics and preparation method thereof.
The technical solution of the present invention is as follows：
A kind of Antimicrobial preservative degredation plastic, is prepared from the following raw materials in parts by weight：20~40 parts of polyethylene, carbonic acid
15~25 parts of calcium, 2~8 parts of bamboo fibre, 12~20 parts of wood fibre, 15~25 parts of modified starch, 2~6 parts of potassium sorbate, shell gathers
Sugar 5~10,2~8 parts of titanium dioxide, 10~24 parts of ethanol, 2~6 parts of polyethylene glycol, 1~5 part of stearic acid Nitranitol, acetic acid 1
~3 parts, 1~5 part of tributyl 2-acetylcitrate, 1~5 part of polyethylene glycol oxide, 1~3 part of OPE.
Preferably, it is prepared from the following raw materials in parts by weight：25~35 parts of polyethylene, 18~22 parts of calcium carbonate, bamboo are fine
3~7 parts of dimension, 14~18 parts of wood fibre, 17~23 parts of modified starch, 3~5 parts of potassium sorbate, chitosan 6~9, titanium dioxide
4~6 parts, 14~20 parts of ethanol, 3~5 parts of polyethylene glycol, 2~4 parts of stearic acid Nitranitol, 1~2 part of acetic acid, acetyl tributyl citrate
2~4 parts of tributyl, 2~4 parts of polyethylene glycol oxide, 1~2 part of OPE.
A kind of preparation method of Antimicrobial preservative degredation plastic, comprises the following steps：
(1) by polyethylene, bamboo fibre, wood fibre, modified starch add ethanol in, temperature be 50~70 DEG C, pH 9
Stirred under conditions of~10, obtain pasty mixture, pasty mixture is added in reactor, reacted under the conditions of 2~4MPa
20~30min；
(2) by calcium carbonate, titanium dioxide, polyethylene glycol, polyethylene glycol oxide, OPE, stearic acid Nitranitol
Added with tributyl 2-acetylcitrate in aforesaid reaction vessel, 5~10min is stirred under conditions of being 20~40 DEG C in temperature；
(3) chitosan, acetic acid, potassium sorbate are added in another reactor, react 30 under conditions of 80~120 DEG C~
40min；
(4) mixed liquor that the mixed liquor step (3) that step (2) obtains obtains is entered under the conditions of temperature is 70~110 DEG C
Row mixing, is incubated 1~2h；
(5) extruding pelletization in double screw extruder, blown film then is extruded with plastic film blowing machine, produces product of the present invention.
Beneficial effects of the present invention are as follows：
1st, the present invention adds degradable modified starch, wood fibre, bamboo fibre, chitosan etc. in polyvinyl resin,
So as to improve the degradability of vinyon.Meanwhile the present invention with the addition of natural antimicrobial substance bamboo in polyethylene
Fiber, chitosan and potassium sorbate, bamboo fibre not only have good gas permeability, instant water absorption, stronger wearability, and
With natural antibacterial, antibacterial, except mite, the function of deodorization；Chitosan is a kind of natural polymerses, and it is in weak acid solvent
The a little amino of amino, which are generated, after dissolving suppresses bacterium, fungi, bacterium and the growth and breeding of virus, chitosan by combining negatron
Also there is the effect such as antioxidant.Potassium sorbate can effectively suppress the activity of mould, saccharomycete and aerobic bacteria, moreover it is possible to anti-
The only growth of the harmful microbe such as clostridium botulinum, staphylococcus, salmonella and breeding.The crystal of the titanium dioxide of the present invention exists
Under light irradiation, the microorganism being in contact with it can be just killed in the short time completely, oxidation activity is higher, quick, durable, without two
Secondary pollution, while its stability is also relatively strong, it is nontoxic to human body.Therefore plastics of the present invention have the function that Antimicrobial preservative, can be used for
The manufacture of food fresh keeping membrane, polybag.
2nd, lignocellulosic of the invention has excellent pliability and dispersiveness, with being formed after the material mixing such as polyethylene
Tridimensional network, enhance the support force and endurance of vinyon.A variety of processing aids are also added with the present invention, such as
Tributyl 2-acetylcitrate, polyethylene glycol, stearic acid Nitranitol, polyethylene glycol oxide greatly improve the water-fast of polybag of the present invention
Property, intensity, hot-workability and life-span.The polyethylene glycol oxide of the present invention has water imbibition simultaneously, can adsorb rubbish preservative film, modeling
The residual liquid of pocket, so as to keep preservative film, the drying in polybag.
3rd, vinyon of the invention has that degradable, plasticity is good, Antimicrobial preservative, is suitably applied various plastics systems
The manufacturing of product, the particularly manufacture for food containers.
Embodiment
The present invention is described in further details with specific embodiment below, but the present invention is not only limited in detail below in fact
Apply example.
Embodiment one
Weigh the raw material of following weight proportion：Polyethylene 20,15 parts of calcium carbonate, 2 parts of bamboo fibre, 12 parts of wood fibre, change
15 parts of starch of property, 2 parts of potassium sorbate, chitosan 5,2 parts of titanium dioxide, 10 parts of ethanol, 2 parts of polyethylene glycol, stearic acid mannitol
1 part of ester, 1 part of acetic acid, 1 part of tributyl 2-acetylcitrate, 1 part of polyethylene glycol oxide, 1 part of OPE.
A kind of preparation method of Antimicrobial preservative degredation plastic, comprises the following steps：
(1) polyethylene, bamboo fibre, wood fibre, modified starch are added in ethanol, in the bar that temperature is 50 DEG C, pH is 9
Stirred under part, obtain pasty mixture, pasty mixture is added in reactor, 20min is reacted under the conditions of 2MPa；
(2) will be by calcium carbonate, titanium dioxide, polyethylene glycol, polyethylene glycol oxide, OPE, stearic acid mannitol
Ester and tributyl 2-acetylcitrate are added in aforesaid reaction vessel, and 5min is stirred under conditions of being 20 DEG C in temperature；
(3) chitosan, acetic acid, potassium sorbate are added in another reactor, reacts 30min under conditions of 80 DEG C；
(4) by the mixed liquor that step (2) obtains and the mixed liquor that step (3) obtains be 70 DEG C in temperature under the conditions of mixed
Close, be incubated 1h；
(5) extruding pelletization in double screw extruder, blown film then is extruded with plastic film blowing machine, produces product.
Embodiment two
Weigh the raw material of following weight proportion：30 parts of polyethylene, 20 parts of calcium carbonate, 5 parts of bamboo fibre, 16 parts of wood fibre,
20 parts of modified starch, 4 parts of potassium sorbate, chitosan 8,5 parts of titanium dioxide, 17 parts of ethanol, 4 parts of polyethylene glycol, stearic acid sweet dew
3 parts of alcohol ester, 2 parts of acetic acid, 3 parts of tributyl 2-acetylcitrate, 3 parts of polyethylene glycol oxide, 2 parts of OPE.
A kind of preparation method of Antimicrobial preservative degredation plastic, comprises the following steps：
(1) polyethylene, bamboo fibre, wood fibre, modified starch, sorbic acid are added in ethanol, is 60 DEG C, pH in temperature
To stir under conditions of 9.5, pasty mixture is obtained, pasty mixture is added in reactor, reacted under the conditions of 3MPa
25min；
(2) will be by calcium carbonate, titanium dioxide, polyethylene glycol, polyethylene glycol oxide, OPE, stearic acid mannitol
Ester and tributyl 2-acetylcitrate are added in aforesaid reaction vessel, and 7min is stirred under conditions of being 30 DEG C in temperature；
(3) chitosan, acetic acid, potassium sorbate are added in another reactor, reacts 35min under conditions of 100 DEG C；
(4) by the mixed liquor that step (2) obtains and the mixed liquor that step (3) obtains be 90 DEG C in temperature under the conditions of mixed
Close, be incubated 1.5h；
(5) extruding pelletization in double screw extruder, blown film then is extruded with plastic film blowing machine, produces product.
Embodiment three
Weigh the raw material of following weight proportion：40 parts of polyethylene, 25 parts of calcium carbonate, 8 parts of bamboo fibre, 20 parts of wood fibre,
25 parts of modified starch, 6 parts of potassium sorbate, chitosan 10,8 parts of titanium dioxide, 24 parts of ethanol, 6 parts of polyethylene glycol, stearic acid sweet dew
5 parts of alcohol ester, 3 parts of acetic acid, 5 parts of tributyl 2-acetylcitrate, 5 parts of polyethylene glycol oxide, 3 parts of OPE.
A kind of preparation method of Antimicrobial preservative degredation plastic, comprises the following steps：
(1) polyethylene, bamboo fibre, wood fibre, modified starch, sorbic acid are added in ethanol, is 70 DEG C, pH in temperature
To stir under conditions of 9~10, pasty mixture is obtained, pasty mixture is added in reactor, reacted under the conditions of 4MPa
30min；
(2) will be by calcium carbonate, titanium dioxide, polyethylene glycol, polyethylene glycol oxide, OPE, stearic acid mannitol
Ester and tributyl 2-acetylcitrate are added in aforesaid reaction vessel, and 10min is stirred under conditions of being 40 DEG C in temperature；
(3) chitosan, acetic acid, potassium sorbate are added in another reactor, reacts 40min under conditions of 120 DEG C；
(4) by the mixed liquor that step (2) obtains and the mixed liquor that step (3) obtains be 110 DEG C in temperature under the conditions of carry out
Mixing, it is incubated 2h；
(5) extruding pelletization in double screw extruder, blown film then is extruded with plastic film blowing machine, produces product.
The Antimicrobial preservative degredation plastic progress performance detection that embodiment one to three is prepared, wherein degradation rate
Detection method is：It is 50 DEG C in temperature, is handled 90 days using composting process；Anti-microbial property, specific knot are detected using inhibition zone test
Fruit such as table one：
Table one
| Embodiment one | Embodiment two | Embodiment three | |
| Tensile strength (N/nm2) | 2.1 | 3.0 | 2.8 |
| Fracture strength (N/nm2) | 3.0 | 4.1 | 3.8 |
| Tension intensity (N/nm2) | 3.3 | 3.5 | 3.6 |
| 90 days degradation rates (%) | 95.1 | 97.6 | 97.2 |
| To the inhibiting rate (%) of mould | 99.2 | 99.9 | 99.6 |
| To the inhibiting rate (%) of staphylococcus aureus | 99.6 | 99.9 | 99.9 |
| To the inhibiting rate (%) of saccharomycete | 99.6 | 99.9 | 99.9 |
| To the inhibiting rate (%) of salmonella | 95.3 | 96.7 | 96.3 |
| To the inhibiting rate (%) of clostridium botulinum | 94.5 | 95.8 | 95.7 |
Conclusion：By performance test it can be found that the plastic construction strength character for preparing of the present invention is preferable, the degraded of 90 days
Rate up to more than 95%, to mould, saccharomycete, staphylococcus aureus inhibiting rate up to 99.6%, to clostridium botulinum, Salmonella
Bacterium inhibiting rate is up to more than 94%, therefore the degradation rate of the present invention is high, does not pollute the environment, while has inhibitory action to microorganism,
Medicine food field can be applied to safe and secure.
It the above is only the feature implementation example of the present invention, the scope of the present invention be not limited in any way.It is all to use together
The technical scheme formed Deng exchange or equivalence replacement, all falls within rights protection scope of the present invention.
Claims (3)
- A kind of 1. Antimicrobial preservative degredation plastic, it is characterised in that：It is prepared from the following raw materials in parts by weight：Polyethylene 20~ 40 parts, 15~25 parts of calcium carbonate, 2~8 parts of bamboo fibre, 12~20 parts of wood fibre, 15~25 parts of modified starch, potassium sorbate 2 ~6 parts, chitosan 5~10,2~8 parts of titanium dioxide, 10~24 parts of ethanol, 2~6 parts of polyethylene glycol, stearic acid Nitranitol 1 ~5 parts, 1~3 part of acetic acid, 1~5 part of tributyl 2-acetylcitrate, 1~5 part of polyethylene glycol oxide, 1~3 part of OPE.
- A kind of 2. Antimicrobial preservative degredation plastic according to claim 1, it is characterised in that：By following parts by weight Raw material is made：25~35 parts of polyethylene, 18~22 parts of calcium carbonate, 3~7 parts of bamboo fibre, 14~18 parts of wood fibre, modified starch 17~23 parts, 3~5 parts of sorbic acid, chitosan 6~9,4~6 parts of titanium dioxide, 14~20 parts of ethanol, 3~5 parts of polyethylene glycol, 2~4 parts of stearic acid Nitranitol, 1~2 part of acetic acid, 2~4 parts of tributyl 2-acetylcitrate, 2~4 parts of polyethylene glycol oxide, oxidation 1~2 part of Tissuemat E.
- 3. a kind of preparation method of Antimicrobial preservative degredation plastic, comprises the following steps：(1) by polyethylene, bamboo fibre, wood fibre, modified starch add ethanol in, temperature be 50~70 DEG C, pH be 9~10 Under conditions of stir, obtain pasty mixture, will pasty mixture add reactor in, under the conditions of 2~4MPa react 20~ 30min；(2) by calcium carbonate, titanium dioxide, polyethylene glycol, polyethylene glycol oxide, OPE, stearic acid Nitranitol and second Acyl ATBC is added in aforesaid reaction vessel, and 5~10min is stirred under conditions of being 20~40 DEG C in temperature；(3) chitosan, acetic acid, potassium sorbate are added in another reactor, react 30 under conditions of 80~120 DEG C~ 40min；(4) mixed liquor that the mixed liquor step (3) that step (2) obtains obtains is mixed under the conditions of temperature is 70~110 DEG C Close, be incubated 1~2h；(5) extruding pelletization in double screw extruder, blown film then is extruded with plastic film blowing machine, produces product of the present invention.
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Cited By (11)
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| CN109054159A (en) * | 2018-08-08 | 2018-12-21 | 界首市王集镇顺义家庭农场 | A kind of fruit vegetable preservative film and preparation method thereof |
| CN109235144A (en) * | 2018-08-02 | 2019-01-18 | 山东省产品质量检验研究院 | A kind of paper cup and its preparation process |
| CN109338713A (en) * | 2018-09-30 | 2019-02-15 | 李明珠 | A kind of noise reduction composite material and preparation method |
| CN110511471A (en) * | 2019-09-23 | 2019-11-29 | 安徽超星新材料科技有限公司 | A kind of environment-friendly type antibiotic plastic film and its preparation process |
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Application publication date: 20180316 |