CN109517245A - A kind of degradable composite package film and preparation method thereof - Google Patents
A kind of degradable composite package film and preparation method thereof Download PDFInfo
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- CN109517245A CN109517245A CN201811184432.7A CN201811184432A CN109517245A CN 109517245 A CN109517245 A CN 109517245A CN 201811184432 A CN201811184432 A CN 201811184432A CN 109517245 A CN109517245 A CN 109517245A
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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
-
- 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
-
- 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
- C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2403/02—Starch; Degradation products thereof, e.g. dextrin
-
- 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
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/08—Chitin; Chondroitin sulfate; Hyaluronic acid; Derivatives thereof
-
- 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
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/02—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
- C08J2423/04—Homopolymers or copolymers of ethene
- C08J2423/08—Copolymers of ethene
-
- 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
- C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
- C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
-
- 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
- C08J2491/00—Characterised by the use of oils, fats or waxes; Derivatives thereof
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/06—Ethers; Acetals; Ketals; Ortho-esters
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/10—Esters; Ether-esters
- C08K5/11—Esters; Ether-esters of acyclic polycarboxylic acids
-
- 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
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/13—Phenols; Phenolates
- C08K5/134—Phenols containing ester groups
- C08K5/1345—Carboxylic esters of phenolcarboxylic acids
Abstract
The invention discloses a kind of degradable composite package films, its raw material is grouped as by the group of following parts by weight: 45~55 parts of low density polyethylene (LDPE), 20~35 parts of polylactic acid, 15~20 parts of ethylene-vinyl alcohol copolymer, 10~20 parts of potato starch, 8~15 parts of chitosan, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] 0.1~0.18 part of pentaerythritol esters, 0.32~0.58 part of ferric stearate, 7~12 parts of plasticizer.The present invention is by preferred raw material, and rational proportion, degradable composite package film obtained are discarded after nature, and degradable by light or organisms occurs, capable of being fast degraded, and has preferable mechanical property, such as tensile strength, elongation at break and barrier property.
Description
Technical field
The present invention relates to a kind of packaging films, and in particular to a kind of degradable composite package film and preparation method thereof.
Background technique
In recent years, with the improvement of people's environmental awareness, " white pollution " problem becomes the hot spot of social concerns.Using life
Biodegradable material is used as packaging film and is undoubtedly the effective method that solves the problems, such as.Currently, biodegradable material includes
Polysaccharide such as cellulose, converted starch, sodium alginate, chitosan etc. and protein such as soybean protein, corn protein, wheat
Alcohol soluble protein matter and gelatin etc..These degradable materials are mainly used for fruit freshness preserving, meat preservation, food packaging, and can directly eat
With.
But existing packaging film or degradation speed are slow or because biodegradable component includes polysaccharide such as cellulose
Equal additive amounts are big, so that its tensile strength, elongation at break and barrier property etc. are deteriorated.
Summary of the invention
In view of this, the present invention provides a kind of degradable composite package film and preparation method thereof.The present invention passes through preferred former
Material, and rational proportion, degradable composite package film obtained, are discarded after nature, and degradable by light or organisms occurs, can be fast
Prompt drop solution, and there is preferable mechanical property, such as tensile strength, elongation at break and barrier property.
In order to solve the above technical problems, technical solution provided by the invention is a kind of degradable composite package film, raw material
It is grouped as by the group of following parts by weight: 45~55 parts of low density polyethylene (LDPE), 20~35 parts of polylactic acid, ethylene-vinyl alcohol copolymer
15~20 parts, 10~20 parts of potato starch, 8~15 parts of chitosan, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid]
0.1~0.18 part of pentaerythritol ester, 0.32~0.58 part of ferric stearate, 7~12 parts of plasticizer.
Preferably, raw material is grouped as by the group of following parts by weight: 48~52 parts of low density polyethylene (LDPE), polylactic acid 22~32
Part, 16~18 parts of ethylene-vinyl alcohol copolymer, 12~18 parts of potato starch, 10~12 parts of chitosan, four [β-(3,5- bis- uncles
Butyl -4- hydroxy phenyl) propionic acid] 0.12~0.15 part of pentaerythritol ester, 0.38~0.5 part of ferric stearate, plasticizer 8~11
Part.
Preferably, raw material is grouped as by the group of following parts by weight: the degradable composite package film, raw material is by following
The group of parts by weight is grouped as: 50 parts of low density polyethylene (LDPE), 28 parts of polylactic acid, 17 parts of ethylene-vinyl alcohol copolymer, potato starch
15 parts, 11 parts of chitosan, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] 0.15 part of pentaerythritol esters, ferric stearate
0.45 part, 10 parts of plasticizer.
Preferably, the plasticizer is one of polyethylene glycol-400, epoxidized soybean oil, citrate or a variety of.
The present invention also provides a kind of preparation methods of degradable composite package film, including the following steps:
(1) it is formed according to the raw material of the degradable composite package film, weighs each raw material；
(2) the weighed each raw material of step (1) is first mixed, 10min is then remixed in high-speed mixer, be sent into after mixing double
It is squeezed out in screw extruder, keeps the temperature 20~30min after extrusion at 145~165 DEG C, cooling, biaxial tension, winding, i.e.,
Obtain degradable composite package film.
Compared with prior art, the present invention its detailed description are as follows:
1, the present invention is by preferred raw material, and rational proportion, degradable composite package film obtained are discarded after nature,
Degradable by light or organisms occurs, it is capable of being fast degraded.
2, the present invention using low density polyethylene (LDPE), polylactic acid and ethylene-vinyl alcohol copolymer as composite base material, wherein ethylene-
The addition of ethenol copolymer can increase the compatibility between three, guarantee the mechanics of degradable composite package film of the invention
Performance, and polylactic acid is degradable in nature, causes entire packaging film structure to collapse after polylactic acid degradation, can accelerate to drop
Solution.
3, present invention adds potato starch and chitosan, are both the components for being easy degradation, make degradable composite packaging
Film is discarded after nature, and degradable by light or organisms occurs, capable of being fast degraded.
4, present invention adds four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters and ferric stearate, make
Degradable composite package film, is discarded after nature, accelerates that light degradation occurs, and by many experiments, is found said ratio, was both protected
The service performance requirement of degradable composite package film of the invention is demonstrate,proved, and can discarded after nature, accelerates that light degradation occurs.
Specific embodiment
It is right combined with specific embodiments below in order to make those skilled in the art more fully understand technical solution of the present invention
The preferred embodiments of the invention are described, but it is to be understood that these descriptions are only to further illustrate spy of the invention
Advantage of seeking peace rather than to the invention patent require limitation.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1: a kind of degradable composite package film, raw material are grouped as by the group of following parts by weight: low density polyethylene
45 parts of alkene, 20 parts of polylactic acid, 15 parts of ethylene-vinyl alcohol copolymer, 10 parts of potato starch, 8 parts of chitosan, four [β-(3,5- bis-
Tert-butyl-hydroxy phenyl) propionic acid] 0.1 part of pentaerythritol ester, 0.32 part of ferric stearate, 7 parts of plasticizer.
In the present embodiment 1, the plasticizer is epoxidized soybean oil.
In the present embodiment 1, the preparation method of the degradable composite package film, including the following steps:
(1) it is formed according to the raw material of the degradable composite package film, weighs each raw material；
(2) the weighed each raw material of step (1) is first mixed, 10min is then remixed in high-speed mixer, be sent into after mixing double
It is squeezed out in screw extruder, keeps the temperature 20~30min after extrusion at 145~165 DEG C, cooling, biaxial tension, winding, i.e.,
Obtain degradable composite package film.
Embodiment 2: a kind of degradable composite package film, raw material are grouped as by the group of following parts by weight: described degradable
Composite package film, raw material are grouped as by the group of following parts by weight: 52 parts of low density polyethylene (LDPE), 32 parts of polylactic acid, ethylene-vinyl
18 parts of alcohol copolymer, 18 parts of potato starch, 12 parts of chitosan, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] seasons
0.15 part of Doutrate, 0.5 part of ferric stearate, 11 parts of plasticizer.
In the present embodiment 2, the plasticizer is polyethylene glycol-400.
In the present embodiment 2, the preparation method of the degradable composite package film, including the following steps:
(1) it is formed according to the raw material of the degradable composite package film, weighs each raw material；
(2) the weighed each raw material of step (1) is first mixed, 10min is then remixed in high-speed mixer, be sent into after mixing double
It is squeezed out in screw extruder, keeps the temperature 20~30min after extrusion at 145~165 DEG C, cooling, biaxial tension, winding, i.e.,
Obtain degradable composite package film.
Embodiment 3: a kind of degradable composite package film, raw material are grouped as by the group of following parts by weight: described degradable
Composite package film, raw material are grouped as by the group of following parts by weight: the degradable composite package film, raw material is by following weight
The group of part is grouped as: 50 parts of low density polyethylene (LDPE), 28 parts of polylactic acid, 17 parts of ethylene-vinyl alcohol copolymer, potato starch 15
Part, 11 parts of chitosan, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] 0.15 part of pentaerythritol esters, ferric stearate
0.45 part, 10 parts of plasticizer.
In the present embodiment 3, the plasticizer is polyethylene glycol-400 and citrate.
In the present embodiment 3, the preparation method of the degradable composite package film, including the following steps:
(1) it is formed according to the raw material of the degradable composite package film, weighs each raw material；
(2) the weighed each raw material of step (1) is first mixed, 10min is then remixed in high-speed mixer, be sent into after mixing double
It is squeezed out in screw extruder, keeps the temperature 20~30min after extrusion at 145~165 DEG C, cooling, biaxial tension, winding, i.e.,
Obtain degradable composite package film.
Degradable composite package film resulting to embodiment 1-3 is tested, and the results are shown in Table 1.By embodiment 1-3 institute
The degradable composite package film and commercially available degradable packaging film obtained measures induction period and brittle phase, wherein photooxidation assessment method
The middle decline degree with elongation at break indicates induction period and brittle phase, when elongation at break retention reaches the 80% of initial value
When exposure duration be induction period；Exposure duration when 20% is the brittle phase.Test condition: ultraviolet light artificial accelerated aging is used
Experimental box (long 2.4m, wide 1.2m, high 0.4m install 6 fluorescent tubes, every 40w) is tested to carry out；Tested film is placed in bottom, into
Row artificial acceleration light degradation experiment.Film is cut into rectangular item of the same size (long 42cm, wide 33cm)；Film and fluorescent tube distance
20cm is distributed in film frame center into the effective light area both sides 45cm, the temperature inside the box (35 ± 3) DEG C.Elongation at break uses
GB9687-1988 standard testing.
Table 1
As can be seen from the above table, degradable composite package film of the invention, not only degradation speed is fast, but also has preferable
Mechanical property, such as tensile strength, elongation at break.
The above is only the preferred embodiment of the present invention, it is noted that above-mentioned preferred embodiment is not construed as pair
Limitation of the invention, protection scope of the present invention should be defined by the scope defined by the claims..For the art
For those of ordinary skill, without departing from the spirit and scope of the present invention, several improvements and modifications can also be made, these change
It also should be regarded as protection scope of the present invention into retouching.
Claims (5)
1. a kind of degradable composite package film, which is characterized in that its raw material is grouped as by the group of following parts by weight: low density polyethylene
45~55 parts of alkene, 20~35 parts of polylactic acid, 15~20 parts of ethylene-vinyl alcohol copolymer, 10~20 parts of potato starch, chitosan
8~15 parts, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] 0.1~0.18 part of pentaerythritol esters, ferric stearate 0.32
~0.58 part, 7~12 parts of plasticizer.
2. degradable composite package film according to claim 1, which is characterized in that its raw material by following parts by weight component
Composition: 48~52 parts of low density polyethylene (LDPE), 22~32 parts of polylactic acid, 16~18 parts of ethylene-vinyl alcohol copolymer, potato starch
12~18 parts, 10~12 parts of chitosan, four [β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid] pentaerythritol esters 0.12~
0.15 part, 0.38~0.5 part of ferric stearate, 8~11 parts of plasticizer.
3. degradable composite package film according to claim 1, which is characterized in that its raw material by following parts by weight component
Composition: the degradable composite package film, raw material are grouped as by the group of following parts by weight: 50 parts of low density polyethylene (LDPE), poly- cream
Sour 28 parts, 17 parts of ethylene-vinyl alcohol copolymer, 15 parts of potato starch, 11 parts of chitosan, four [β-(3,5- di-t-butyl -4-
Hydroxy phenyl) propionic acid] 0.15 part of pentaerythritol ester, 0.45 part of ferric stearate, 10 parts of plasticizer.
4. degradable composite package film according to any one of claims 1 to 3, which is characterized in that the plasticizer is poly-
One of ethylene glycol -400, epoxidized soybean oil, citrate are a variety of.
5. a kind of preparation method of degradable composite package film as described in any one of claims 1 to 3, which is characterized in that packet
Include the following steps:
(1) it is formed according to the raw material of the degradable composite package film, weighs each raw material；
(2) the weighed each raw material of step (1) is first mixed, 10min is then remixed in high-speed mixer, be sent into after mixing double
It is squeezed out in screw extruder, keeps the temperature 20~30min after extrusion at 145~165 DEG C, cooling, biaxial tension, winding, i.e.,
Obtain degradable composite package film.
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| CN201811184432.7A CN109517245A (en) | 2018-10-11 | 2018-10-11 | A kind of degradable composite package film and preparation method thereof |
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Cited By (5)
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| CN110591195A (en) * | 2019-07-31 | 2019-12-20 | 安徽诺普康医疗器械有限公司 | Environment-friendly degradable disposable diaper bag and preparation method thereof |
| CN110591203A (en) * | 2019-09-24 | 2019-12-20 | 福建省凯安包装科技有限公司 | Degradable polyethylene film with efficient ink printing and preparation method thereof |
| CN111533960A (en) * | 2020-06-08 | 2020-08-14 | 东莞职业技术学院 | Environment-friendly degradable plastic packaging bag |
| CN112266529A (en) * | 2020-10-25 | 2021-01-26 | 太仓市鸿运包装材料有限公司 | High-performance environment-friendly packaging film and preparation method thereof |
| CN113372635A (en) * | 2021-04-12 | 2021-09-10 | 昆山金盟塑料薄膜有限公司 | Preparation method of degradable ultrathin plastic film |
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| CN112266529A (en) * | 2020-10-25 | 2021-01-26 | 太仓市鸿运包装材料有限公司 | High-performance environment-friendly packaging film and preparation method thereof |
| CN113372635A (en) * | 2021-04-12 | 2021-09-10 | 昆山金盟塑料薄膜有限公司 | Preparation method of degradable ultrathin plastic film |
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Application publication date: 20190326 |