CN107201015B - A kind of antibacterial heat-proof polylactic acid tableware and preparation method thereof - Google Patents
A kind of antibacterial heat-proof polylactic acid tableware and preparation method thereof Download PDFInfo
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- CN107201015B CN107201015B CN201710538387.XA CN201710538387A CN107201015B CN 107201015 B CN107201015 B CN 107201015B CN 201710538387 A CN201710538387 A CN 201710538387A CN 107201015 B CN107201015 B CN 107201015B
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Abstract
The invention discloses a kind of antibacterial heat-proof polylactic acid tablewares, include polylactic resin, oxide, viscose rayon, initiator, alkyl ether carboxy acid salt.The invention also discloses the preparation methods of antibacterial heat-proof polylactic acid tableware.Antibacterial heat-proof polylactic acid tableware preparation process flow of the present invention is simple, easily-controllable, and composite material is low in cost, and biodegradable, heat-resist, antibiotic property is strong, can be used for the fields such as tableware, food and medical packaging material.
Description
Technical field
The present invention relates to simple antibacterial heat-proof polylactic acid tablewares of a kind of modified technique and preparation method thereof, belong to macromolecule
Material and its manufacture field.
Background technique
Polylactic acid has the excellent transparency and biodegradability, gets a good chance of replacing nondegradable common plastics,
In the packaging fields such as container, film, the fiber arts such as clothes, carpet, ornament, automobile ornament and electronic apparatus shell etc.
It is widely applied in terms of moulding material.But the glass transition temperature of polylactic acid is at 50 ~ 80 DEG C, the polylactic acid that Conventional processing methods obtain
The heat distortion temperature of product is no more than 60 DEG C, is unable to satisfy the requirement of the heat-resisting aspect of many products at all.It is heat-resisting to improve polylactic acid
Property major technique be improve polylactic acid crystal property, by polylactic acid and inorganic filler and high glass transition temperature high molecular material
It is blended, introducing crosslinked structure, the methods of fiber reinforcement and nanometer composite technology.
Inorganic filler is industrial common polymer composites additive, can reduce goods cost, enhancing polymerization
Object toughness, raising thermal stability etc., but the interface binding power between inorganic filler and polymeric matrix is to the property of entire composite material
It can play a crucial role.Therefore inorganic filler is required to carry out surface treatment activation, and wherein wet processing process is more
Complicated, time-consuming, production efficiency is low to be unfavorable for industrialization promotion.
In practical study, researcher uses polylactic acid and inorganic filler, the modification of glass fibre, plant fibre blending
Method all achieves certain effect for improving heat resistance.But these modified methods often reduce the biology drop of poly-lactic acid material
Xie Xing.
Summary of the invention
It is simple, easily-controllable that the invention mainly solves the technical problem of providing a kind of process flows, and composite material is low in cost,
It is biodegradable, antibacterial, heat-resisting polylactic acid tableware.
The present invention provides a kind of antibacterial heat-proof polylactic acid tableware, and the antibacterial heat-proof polylactic acid tableware includes polylactic acid tree
Rouge, oxide, viscose rayon, initiator, alkyl ether carboxy acid salt.
By weight, comprising 100 parts of polylactic resin, 2-5 parts of oxide, 8-12 parts of viscose rayon, 0.2-
The alkyl ether carboxy acid salt of 0.4 part of initiator and 0.3-0.6 part.
Preferably, the antibacterial heat-proof polylactic acid tableware includes 100 parts of polylactic resin, 3 parts of oxide, 10 parts
Viscose rayon, 0.3 part of initiator and 0.5 part of alkyl ether carboxy acid salt.
In preferably scheme, the oxide is one kind or more of silica, calcium oxide, silver oxide, titanium oxide
Kind.
In preferably scheme, the initiator be potassium peroxydisulfate, sodium peroxydisulfate, persulfuric acid calcium, persulfuric acid magnesium one
Kind is a variety of.
In preferably scheme, the antibacterial heat-proof polylactic acid tableware also includes the bis- benzene pyrazoles yl pyridines-of antibacterial agent Ag-
To phenylacetic acid complex.
In preferably scheme, parts by weight 0.01- of the bis- benzene pyrazoles yl pyridines-of the Ag- to phenylacetic acid complex
0.05。
In preferably scheme, the antibacterial heat-proof polylactic acid tableware also includes antioxidant carbon nano-composite material.
In preferably scheme, the parts by weight 1-3 of the carbon nano-composite material.
Another aspect of the present invention, which provides, a kind of prepares antibacterial heat-proof polylactic acid tableware method, which is characterized in that the method
The following steps are included:
Particles of polylactic acid is ground into particle, is dried in vacuo 12 at 90~120 DEG C~for 24 hours, oxide, viscous is then added
Glue fiber, initiator, alkyl ether carboxy acid salt inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein
Twin-screw processing temperature is 170~280 DEG C；Particles of polylactic acid obtained is dried in vacuo under the conditions of 60~120 DEG C of temperature
12~for 24 hours, particles of polylactic acid is prepared into sheet material post-calendering as needed or direct injection forms to obtain tableware.
Preparation method of the bis- benzene pyrazoles yl pyridines-of Ag- to phenylacetic acid complex
By 0.1mmol AgNO3, (5- phenyl -1H- pyrazole-3-yl) pyridine of 0.05mmol 2,6- bis- and 0.3mmol be to benzene
Acetic acid is dissolved in 15mL H2In the mixed solution of O and 5 mL DMF.It is stirred at room temperature after 1h with tert-butylamine tune pH value 5-6, and persistently stirs
After mixing 3-6h, mixed solution is transferred in the stainless steel cauldron with polytetrafluoroethyllining lining, and is rotated in 150 DEG C of baking ovens
For 24 hours, removal is cooled to room temperature for heating, and product is filtered and distilled water washing, after drying at room temperature, obtains the bis- benzene pyrazolyl pyrroles of Ag-
Pyridine-is to phenylacetic acid complex crystal.
The preparation method of carbon nano-composite material
Carbon nanotube reacts 3h at 120 DEG C with boric acid, and material obtained above is reacted at 100 DEG C with barium hydroxide
6h to get arrive carbon nano-composite material.
The invention has the following advantages:
Antibacterial heat-proof polylactic acid tableware provided by the present invention carries out melt blending using one-step method, which is preparing
During tableware, situ-formed graft surface is carried out to inorganic filler and is modified, traditional powder surface pretreating process is avoided；It is viscous
Glue fiber is nontoxic, low in cost, avoids using other expensive Biodegradable polyesters as toughener, to make full biology
The production cost of degradation polylactic acid based articles is greatly reduced, and graft crosslinking reaction occurs between nanocomposite constituents, makes polylactic acid
Tableware keeps excellent mechanical property for a long time.
Graft crosslinking structure between instant component can dramatically increase the interface binding power between inorganic filler and organism, make
Polylactic acid tableware mechanical property is greatly improved, and while especially temperature tolerance greatly improves, also maintains higher toughness.
Addition of the bis- benzene pyrazoles yl pyridines-of Ag- to phenylacetic acid complex and carbon nano-composite material, it will be apparent that improve polylactic acid tableware
Antibiotic property and antioxygenic property.The present invention is not only obviously improved polylactic acid heat resistance, while improving its antibiotic property and antioxygen
The property changed, also effectively maintains the biological degradability of polylactic acid system.
Specific embodiment
Embodiment 1
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt inject in double screw extruder, extruding pelletization, with system
At particles of polylactic acid, wherein twin-screw processing temperature is 220 DEG C；By particles of polylactic acid obtained under the conditions of 80 DEG C of temperature
It is dried in vacuo 20h, particles of polylactic acid is prepared into sheet material post-calendering as needed or direct injection forms to obtain tableware.
Embodiment 2
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 5 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt inject in double screw extruder, extruding pelletization, with system
At particles of polylactic acid, wherein twin-screw processing temperature is 220 DEG C；By particles of polylactic acid obtained under the conditions of 80 DEG C of temperature
It is dried in vacuo 20h, particles of polylactic acid is prepared into sheet material post-calendering as needed or direct injection forms to obtain tableware.
Embodiment 3
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
12 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt inject in double screw extruder, extruding pelletization, with system
At particles of polylactic acid, wherein twin-screw processing temperature is 220 DEG C；By particles of polylactic acid obtained under the conditions of 80 DEG C of temperature
It is dried in vacuo 20h, particles of polylactic acid is prepared into sheet material post-calendering as needed or direct injection forms to obtain tableware.
Embodiment 4
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.4 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt inject in double screw extruder, extruding pelletization, with system
At particles of polylactic acid, wherein twin-screw processing temperature is 220 DEG C；By particles of polylactic acid obtained under the conditions of 80 DEG C of temperature
It is dried in vacuo 20h, particles of polylactic acid is prepared into sheet material post-calendering as needed or direct injection forms to obtain tableware.
Embodiment 5
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.6 part of alkyl ether carboxy acid salt inject in double screw extruder, extruding pelletization, with system
At particles of polylactic acid, wherein twin-screw processing temperature is 220 DEG C；By particles of polylactic acid obtained under the conditions of 80 DEG C of temperature
It is dried in vacuo 20h, particles of polylactic acid is prepared into sheet material post-calendering as needed or direct injection forms to obtain tableware.
Embodiment 6
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 5 parts of silica,
12 parts of viscose rayons, 0.4 part of potassium peroxydisulfate, 0.6 part of alkyl ether carboxy acid salt inject in double screw extruder, extruding pelletization, with system
At particles of polylactic acid, wherein twin-screw processing temperature is 220 DEG C；By particles of polylactic acid obtained under the conditions of 80 DEG C of temperature
It is dried in vacuo 20h, particles of polylactic acid is prepared into sheet material post-calendering as needed or direct injection forms to obtain tableware.
Embodiment 7
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, 0.01 part of Ag, 1 part of carbon nano-composite material, injection are double
In screw extruder, extruding pelletization, particles of polylactic acid is made, wherein twin-screw processing temperature is 220 DEG C；It will be obtained poly-
Lactic acid particles are dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed by particles of polylactic acid be prepared into sheet material post-calendering or
Person's direct injection forms to obtain tableware.
Embodiment 8
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, 0.01 part of double benzene pyrazoles yl pyridines-cooperate phenylacetic acid
Object, 1 part of carbon nano-composite material inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein twin-screw
Processing temperature is 220 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, will be gathered as needed
Lactic acid particles are prepared into sheet material post-calendering or direct injection forms to obtain tableware.
Embodiment 9
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.01 part of Ag- are to phenylacetic acid
Complex, 1 part of carbon nano-composite material inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein double
Screw rod processing temperature is 220 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed
Particles of polylactic acid is prepared into sheet material post-calendering or direct injection forms to obtain tableware.
Embodiment 10
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.05 part of Ag- are to phenylacetic acid
Complex, 1 part of carbon nano-composite material inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein double
Screw rod processing temperature is 220 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed
Particles of polylactic acid is prepared into sheet material post-calendering or direct injection forms to obtain tableware.
Embodiment 11
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.05 part of Ag- are to phenylacetic acid
Complex, 3 parts of carbon nano-composite materials inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein double
Screw rod processing temperature is 220 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed
Particles of polylactic acid is prepared into sheet material post-calendering or direct injection forms to obtain tableware.
Embodiment 12
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 5 parts of silica,
12 parts of viscose rayons, 0.4 part of potassium peroxydisulfate, 0.6 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.05 part of Ag- are to phenylacetic acid
Complex, 3 parts of carbon nano-composite materials inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein double
Screw rod processing temperature is 220 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed
Particles of polylactic acid is prepared into sheet material post-calendering or direct injection forms to obtain tableware.
Embodiment 13
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.05 part of Ag- are to phenylacetic acid
Complex, 3 parts of carbon nano-composite materials inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein double
Screw rod processing temperature is 180 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed
Particles of polylactic acid is prepared into sheet material post-calendering or direct injection forms to obtain tableware.
Embodiment 14
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.05 part of Ag- are to phenylacetic acid
Complex, 3 parts of carbon nano-composite materials inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein double
Screw rod processing temperature is 200 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed
Particles of polylactic acid is prepared into sheet material post-calendering or direct injection forms to obtain tableware.
Embodiment 15
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.05 part of Ag- are to phenylacetic acid
Complex, 3 parts of carbon nano-composite materials inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein double
Screw rod processing temperature is 260 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed
Particles of polylactic acid is prepared into sheet material post-calendering or direct injection forms to obtain tableware.
Embodiment 16
The preparation method applied to antibacterial heat-proof polylactic acid tableware of the present embodiment, comprising the following steps:
Following raw material is all parts by weight,
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, then be added 2 parts of silica,
8 parts of viscose rayons, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.05 part of Ag- are to phenylacetic acid
Complex, 3 parts of carbon nano-composite materials inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein double
Screw rod processing temperature is 280 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, as needed
Particles of polylactic acid is prepared into sheet material post-calendering or direct injection forms to obtain tableware.
The above-mentioned description to embodiment is for invention can be understood and used convenient for the those skilled in the art.It is familiar with this
The personnel of field technology obviously can easily carry out various modifications these embodiments, and General Principle described herein is answered
It uses in other embodiments without having to go through creative labor.Therefore, the present invention is not limited to the above embodiments, art technology
Personnel's announcement according to the present invention, improvement and modification made without departing from the scope of the present invention all should be in protection models of the invention
Within enclosing.
Test method:
Heat resistance test
Tableware obtained by embodiment is placed in 100-140 DEG C of baking oven and toasts 4h, is placed at room temperature after taking-up, is seen
Examine tableware color, measurement tableware size.
1, without changing 2, having color change 3, have change in size
Antibiotic property test
Standard is GB14934-2016, the method for inspection of Escherichia coli are as follows: 10 2.0 wet with 1 mL sterile saline
The cm(5 of cm × 2.5 cm2) (gross area is 50 cm to sterilizing filter paper piece2).The inner wall surface that is usually contacted with food of selection tableware or
With lip contact position, every sample sticks 10 wet sterilizing filter paper pieces respectively.It is removed after 30 s, sets corresponding Liquid Culture
In base.Or cotton swab is moistened with sterile saline, respectively in 2 25 cm2(cm of 5 cm × 5) areal extent uniformly applies back and forth
After smearing entire grid 3 times, the part that cotton swab is contacted with hand is cut off with sterilizing scissors, cotton swab is set into corresponding fluid nutrient medium
It is interior.Inspection in 4 h.The method of inspection of salmonella are as follows: directly by after sampling cotton swab or whole scraps of paper set 10 mL buffering egg
In white peptone water.36 DEG C of ± 1 DEG C of culture 18 h~24 h.
Table 1
| Polylactic resin | Titanium dioxide Silicon | Viscose glue is fine Dimension | Persulfuric acid Potassium | Alkyl ether carboxylic acid Salt | The bis- benzene pyrazoles yl pyridines-of Ag- cooperate phenylacetic acid Object | The nano combined material of carbon Material | Temperature DEG C | Temperature tolerance test knot Fruit | |
| Embodiment 1 | 100 | 2 | 8 | 0.2 | 0.3 | 0 | 0 | 240 | 1 |
| Embodiment 2 | 100 | 5 | 8 | 0.2 | 0.3 | 0 | 0 | 240 | 1 |
| Embodiment 3 | 100 | 2 | 12 | 0.2 | 0.3 | 0 | 0 | 240 | 1 |
| Embodiment 4 | 100 | 2 | 8 | 0.4 | 0.3 | 0 | 0 | 240 | 1 |
| Embodiment 5 | 100 | 2 | 8 | 0.2 | 0.6 | 0 | 0 | 240 | 1 |
| Embodiment 6 | 100 | 5 | 12 | 0.4 | 0.6 | 0 | 0 | 240 | 1 |
| Embodiment 7 | 100 | 2 | 8 | 0.2 | 0.3 | 0.01Ag | 1 | 240 | 1 |
| Embodiment 8 | 100 | 2 | 8 | 0.2 | 0.3 | 0.01 pair of benzene pyrazoles yl pyridines-cooperate phenylacetic acid Object | 1 | 240 | 1 |
| Embodiment 9 | 100 | 2 | 8 | 0.2 | 0.3 | 0.01 | 1 | 240 | 1 |
| Embodiment 10 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 1 | 240 | 1 |
| Embodiment 11 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 240 | 1 |
| Embodiment 12 | 100 | 5 | 12 | 0.4 | 0.6 | 0.05 | 3 | 240 | 1 |
| Embodiment 13 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 180 | 1 |
| Embodiment 14 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 200 | 1 |
| Embodiment 15 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 260 | 1 |
| Embodiment 16 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 280 | 1 |
As it can be seen from table 1 the tableware temperature tolerance of the method synthesis is very good.
Table 2
| Polylactic acid tree Rouge | Titanium dioxide Silicon | Viscose glue is fine Dimension | Persulfuric acid Potassium | Alkyl ether carboxylic acid Salt | The bis- benzene pyrazoles yl pyridines-of Ag- match phenylacetic acid Close object | The nano combined material of carbon Material | Temperature ℃ | Escherichia coli/ It is a | Salmonella Bacterium/ | |
| Embodiment 1 | 100 | 2 | 8 | 0.2 | 0.3 | 0 | 0 | 240 | 15 | 0 |
| Embodiment 2 | 100 | 5 | 8 | 0.2 | 0.3 | 0 | 0 | 240 | 13 | 0 |
| Embodiment 3 | 100 | 2 | 12 | 0.2 | 0.3 | 0 | 0 | 240 | 18 | 0 |
| Embodiment 4 | 100 | 2 | 8 | 0.4 | 0.3 | 0 | 0 | 240 | 14 | 0 |
| Embodiment 5 | 100 | 2 | 8 | 0.2 | 0.6 | 0 | 0 | 240 | 20 | 0 |
| Embodiment 6 | 100 | 5 | 12 | 0.4 | 0.6 | 0 | 0 | 240 | 19 | 0 |
| Embodiment 7 | 100 | 2 | 8 | 0.2 | 0.3 | 0.01Ag | 1 | 240 | 2 | 0 |
| Embodiment 8 | 100 | 2 | 8 | 0.2 | 0.3 | 0.01 pair of benzene pyrazoles yl pyridines-are to phenylacetic acid Complex | 1 | 240 | 14 | 0 |
| Embodiment 9 | 100 | 2 | 8 | 0.2 | 0.3 | 0.01 | 1 | 240 | 0 | 0 |
| Embodiment 10 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 1 | 240 | 0 | 0 |
| Embodiment 11 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 240 | 0 | 0 |
| Embodiment 12 | 100 | 5 | 12 | 0.4 | 0.6 | 0.05 | 3 | 240 | 0 | 0 |
| Embodiment 13 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 180 | 0 | 0 |
| Embodiment 14 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 200 | 0 | 0 |
| Embodiment 15 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 260 | 0 | 0 |
| Embodiment 16 | 100 | 2 | 8 | 0.2 | 0.3 | 0.05 | 3 | 280 | 0 | 0 |
From table 2 it can be seen that not detecting large intestine after the bis- benzene pyrazoles yl pyridines-of Ag- are added to phenylacetic acid complex
Bacillus；The tableware of embodiment 1-16 synthesis does not all detect salmonella.
Claims (1)
1. a kind of antibacterial heat-proof polylactic acid tableware, which is characterized in that by weight, include 100 parts of polylactic resin, 2 parts
Silica, 8 parts of viscose rayon, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene of 0.05 part of Ag-
Pyrazoles yl pyridines-are to phenylacetic acid complex and 3 parts of carbon nano-composite material；
The bis- benzene pyrazoles yl pyridines-of Ag- to phenylacetic acid complex the preparation method comprises the following steps:
By 0.1mmol AgNO3, (5- phenyl -1H- pyrazole-3-yl) pyridine of 0.05mmol 2,6- bis- and 0.3mmol be to phenylacetic acid
It is dissolved in 15mL H2In the mixed solution of O and 5mL DMF；It is stirred at room temperature after 1h with tert-butylamine tune pH value 5-6, and continues to stir 3-
After 6h, mixed solution is transferred in the stainless steel cauldron with polytetrafluoroethyllining lining, rotation adds in 150 DEG C of baking ovens
For 24 hours, removal is cooled to room temperature heat, and product is filtered and distilled water washing, after drying at room temperature, obtains the bis- benzene pyrazoles yl pyridines-of Ag-
To phenylacetic acid complex crystal；
The carbon nano-composite material the preparation method comprises the following steps:
Carbon nanotube is reacted into 3h at 120 DEG C with boric acid, material obtained above is reacted at 100 DEG C with barium hydroxide
6h to get arrive carbon nano-composite material；
The antibacterial heat-proof polylactic acid tableware the preparation method comprises the following steps:
100 parts of particles of polylactic acid are ground into particle, 18h is dried in vacuo at 100 DEG C, 2 parts of silica, 8 parts are then added
Viscose rayon, 0.2 part of potassium peroxydisulfate, 0.3 part of alkyl ether carboxy acid salt, the bis- benzene pyrazoles yl pyridines-of 0.05 part of Ag- cooperate phenylacetic acid
Object, 3 parts of carbon nano-composite materials inject in double screw extruder, extruding pelletization, particles of polylactic acid is made, wherein twin-screw
Processing temperature is 280 DEG C；Particles of polylactic acid obtained is dried in vacuo 20h under the conditions of 80 DEG C of temperature, will be gathered as needed
Lactic acid particles are prepared into sheet material post-calendering or direct injection forms to obtain tableware.
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