CN101070416A - High-blocking water-gel for food package and preparing method - Google Patents
High-blocking water-gel for food package and preparing method Download PDFInfo
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- CN101070416A CN101070416A CN 200710028733 CN200710028733A CN101070416A CN 101070416 A CN101070416 A CN 101070416A CN 200710028733 CN200710028733 CN 200710028733 CN 200710028733 A CN200710028733 A CN 200710028733A CN 101070416 A CN101070416 A CN 101070416A
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- polyvinyl alcohol
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- water
- blocking water
- food package
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Abstract
The present invention relates to a kind of high-obstruction polyvinyl alcohol water gel used in food package, and its preparation method. The high-obstruction water gel mainly contains 5-20 wt% polyvinyl alcohol, 1-5 wt% processing modifier, 0.5-2 wt% high-obstruction nano-SiO2, 0.1-0.5 wt% surfactant and distilled water. The preparation process of the present invention includes: according to proportions, polyvinyl alcohol, distilled water and surfactant are added into reactor, and mechanically stirred in constant-temperature oil bath latter; nano-SiO2 is added into the polyvinyl alcohol solution, and continually stirred for above 2 hours under ultrasonic treatment and mechanical stir to produce the gel water. The present invention is safe and nontoxic, and can high-effectively obstruct oxygen molecules, oils, bacteria and other pollutants as well. The high-effective obstruction water gel can be coated on food and medicine packages, and has broad application prospects.
Description
Technical field
The invention belongs to polymer processing and Food Packaging technology field, relate to a kind of high barrier property polyethylene alcohol glue composition specifically.The invention still further relates to the preparation method of this polyvinyl alcohol glue.
Background technology
In the research of separated packaging material, rational exploitation and utilization high barrier polymkeric substance is an effective way.Polyvinyl alcohol (PVA) is commonly called as vinylon, is mainly used in and reels off raw silk from cocoons, makes textiles.The PVA choke is very good, is that choke is best in the plastics.Alcohol steam also is difficult to infiltration, the more difficult air that sees through, and chemical stability is good, and is nontoxic, and environment is not produced pollution, static electrification not, printing and heat sealability are all good.It is owing to its characteristics of molecular structure that PVA has good chemical property, a large amount of hydrogen bonds of intermolecular existence, and the compactness height can effectively prevent the infiltration of gas.Make barrier layer and other compoundization of material with it, good combination property, particularly oxygen transmission rate are extremely low, with and good oil removal, will be applied to the packing of aspects such as food, can prolong greatly and store goods and congratulate the life-span.
Aspect development such as the development of food product pack has plastics performance, developing new product variety, raising intensity and barrier, minimizing consumption (wall thickness), compound use, environmental protection to improving, and is multi-functional.For guaranteeing the safety of wrap food, packaging material for food must have high barrier, and fatty foods requires to have high resistant oxygen and oil resistance.Along with the raising of food to the protectiveness requirement; novel high-barrier packaging material is widespread use abroad; high-barrier packaging material commonly used has tinfoil paper, nylon, polyester, polyvinylidene dichloride etc.; the material that is used for high-barrier at present generally is EVOH and PVDC; EVOH is used for the multi-layer co-extruded technology of plastics; because the multi-layer co-extruded equipment requirements that needs is than higher; the technology controlling and process difficulty; and EVOH ability extrusion film that need be more with respect to coating consumption of the present invention (coat-thickness 2-3 μ m), and the oxygen barrier of PVA is better than EVOH and PVDC under the exsiccant environment.The water-borne coatings that the present invention developed has good environment compatibility, can realize with coating process, makes to realize the simple more and operation easily of industrialized technology.The food product pack of using glue of the present invention to make not only can improve the protection to food, and can reduce the consumption of plastics when packing same amount food.
Summary of the invention
The objective of the invention is to new trend at present barrier material development, and the shortcoming of existing separated packaging material, a kind of high barrier property polyethylene alcohol glue and preparation method have been proposed.
The object of the present invention is achieved like this, and a kind of high-blocking water-gel for food package is made up of following component and content, and each component content is weight percentage:
Polyvinyl alcohol 5-20%
Modifier 1-5%
High barrier nanometer SiO
20.5-2%
Tensio-active agent 0.1-0.5%
Distilled water surplus
Wherein modifier is ethanol or ethylene glycol or 1, the 4-butyleneglycol.
Technical solution of the present invention comprises: said high-blocking water-gel for food package, wherein said polyvinyl alcohol comprise polyvinyl alcohol (PVA) raw material of all trades mark and all alcoholysis degrees.And with the trade mark 1750,124 polyvinyl alcohol better effects if.
Technical solution of the present invention comprises: said high-barrier is every property nanometer SiO
2Material is surface treated nanometer SiO
2Not surface treated nanometer SiO
2
Technical solution of the present invention comprises: said high-blocking water-gel for food package is characterized in that tensio-active agent is CognisA3065, CognisA1080, fatty alcohol-polyoxyethylene ether.
A kind of method for preparing aforementioned high-blocking water-gel high-blocking water-gel for food package, step is carried out in the following order:
I. in proportion polyvinyl alcohol, distilled water, tensio-active agent are joined in the reactor, reaction made polyvinyl alcohol solution in 3-5 hour under 80-100 ℃ of constant temperature oil bath and mechanical stirring;
Ii. in the polyvinyl alcohol solution that the i step makes, add efficient barrier material nanometer SiO
2, under supersound process and mechanical stirring, continue to stir more than 2 hours, make high-blocking water-gel.
Technical solution of the present invention comprises: wherein said is heating, water dissolution, ultrasonication and mechanical stirring with the polyvinyl alcohol dissolving method.
The present invention has the water-based barrier material of high barrier, easily processing, low cost, high comprehensive performance, has more Practical significance and industrial value.The PVA film can be used as a kind of aspect food product pack, mainly utilizes its oxygen barrier, oil resistance excellent characteristic, and good gas-barrier properties such as oleaginous food of be used for that water content is low, moisture absorption is weak such as sausage, barbecue, ham can make commodity obtain good preservation and effect; The water soluble package material of non-consumption has its special purposes, can be used for soap, washing composition, floats from powder, dyestuff, sterilant, chemical fertilizer and chemistry in water treatment pharmaceutical packing, and packing bag can directly be dissolved in water, avoids " white pollution.
Polyvinyl alcohol of the present invention (PVA) is a kind of polyhydroxylated polymer, and structural formula is shown in (I):
CH
2-CHOH
n
(I)
Because its intermolecular hydrogen bonding effect, the compactness height is one of high-barrier type polymkeric substance of a small amount of several excellences, is divided into different model because of alcoholysis degree is different.
Tensio-active agent of the present invention is that a class can reduce film surface tensile material, be the tensio-active agent of a class non-ionic type, ionic or nonionic and ionic mixed type, be CognisA3065, CognisA1080, fatty alcohol-polyoxyethylene ether, Sodium dodecylbenzene sulfonate.
The inventive method is simple, adopts thermostatically heating to reflux and mechanical stirring, and PVA, modifier and distilled water are carried out reactive blending together, makes the aqueous solution, again supersound process condition under add nanometer SiO
2, just can make the material of this novel high barrier again through high-speed stirring.The novel material and the compound use of general purpose film material of the exploitation of the present invention simultaneously, can improve the performance of former thin-film material greatly, the barrier property of thin-film material is improved significantly, coating one deck PVA obtains the PVA composite membrane on PE or BOPP film, this composite membrane choke, moisture barrier property are all good, with low cost, are a kind of good wrapping material.With manual compound being coated on PET, the BOPP film of glue of the present invention, the PET and the BOPP film that will be compounded with glue of the present invention are again done the oxygen-permeable test, test result is as follows: can improve the starvation transit dose ability of former pure PET film more than 10 times, for the BOPP film, the starvation transit dose ability of former pure BOPP film can be improved about 70 times.Preparation technology of the present invention is simple, has reduced cost, and waste material is easy to degraded, has overcome the performance weakness of barrier material in the past, so this material can be used for barrier packages such as food, agricultural chemicals, pharmaceutical chemicals, and wide application and industrial prospect are arranged.
The polyvinyl alcohol trade mark is 1750,124 and the polymkeric substance of the relevant serial trade mark among the present invention, also comprises because of different other trade mark polymkeric substance of all PVA of alcoholysis degree.
In the preparation process of the present invention, the preparation polyvinyl alcohol solution can be that 800-5000 rev/min of mechanical stirring carried out at 80-100 ℃ of constant temperature oil bath and rotating speed, and step I i can carry out under the mechanical stirring of 59Hz ultrasonic wave and 1000-7500 rev/min.
Embodiment
Embodiment 1
The distilled water of 7 gram PVA124,3 milliliters of ethanol, 90 grams being added reactors, 90 ℃ of constant temperature oil baths heating, connect condensation reflux unit, is that reaction made PVA solution in 4 hours under 1000 rev/mins the mechanical stirring with rotating speed; Adding weight subsequently is the surface treated efficient barrier material nanometer SiO of 1 gram
2With the fatty alcohol-polyoxyethylene ether of 0.2 gram, under the mechanical stirring of 59Hz supersound process and 5000 rev/mins, continue to stir and made high-blocking water-gel of the present invention in 4 hours.
Embodiment 2
With 10 gram PVA1750,3 milliliter 1, the distilled water of 4-butyleneglycol, 87 grams add reactor, 90 ℃ of constant temperature oil baths heating, connect condensation reflux unit, are that reaction made PVA solution in 5 hours under 4000 rev/mins the mechanical stirring with rotating speed; Adding weight subsequently is the surface treated nano-SiO of 1 gram
2With the CognisA1080 of 0.2 gram, under the mechanical stirring of 59Hz supersound process and 7000 rev/mins, continue to stir and made high-blocking water-gel of the present invention in 3 hours.
Embodiment 3
The distilled water of 7 gram PVA124,3 milliliters of ethanol, 90 grams being added reactors, 80 ℃ of constant temperature oil baths heating, connect condensation reflux unit, is that reaction made PVA solution in 3.5 hours under 1000 rev/mins the mechanical stirring with rotating speed; Add weight subsequently and be the fatty alcohol-polyoxyethylene ether of 0.2 gram, under the mechanical stirring of 59KHz supersound process and 2000 rev/mins, continue to stir and made high-blocking water-gel of the present invention in 3 hours.
Embodiment 4
The distilled water of 8 gram PVA124,3 milliliters of ethanol, 89 grams being added reactors, 100 ℃ of constant temperature oil baths heating, connect condensation reflux unit, is that reaction made PVA solution in 4.5 hours under 2500 rev/mins the mechanical stirring with rotating speed; Add weight subsequently and be the CognisA3065 of 0.2 gram, under the mechanical stirring of 59KHz supersound process and 3000 rev/mins, continue to stir and made high-blocking water-gel of the present invention in 3 hours.
Embodiment 5
The distilled water of 10 gram PVA1750,3 milliliters of ethanol, 87 grams being added reactors, 90 ℃ of constant temperature oil baths heating, connect condensation reflux unit, is that reaction made PVA solution in 4 hours under 3000 rev/mins the mechanical stirring with rotating speed; Add weight subsequently and be the fatty alcohol-polyoxyethylene ether of 0.2 gram, under the mechanical stirring of 59KHz supersound process and 3500 rev/mins, continue to stir and made high-blocking water-gel of the present invention in 4 hours.
Embodiment 6
The distilled water of 6 gram PVA124,3 milliliters of ethanol, 91 grams being added reactors, 90 ℃ of constant temperature oil baths heating, connect condensation reflux unit, is that reaction made PVA solution in 4 hours under 2500 rev/mins the mechanical stirring with rotating speed; Adding weight subsequently is the surface treated nano-SiO of 1 gram
2With the fatty alcohol-polyoxyethylene ether of 0.1 gram and the Sodium dodecylbenzene sulfonate of 0.1 gram, under the mechanical stirring of 59KHz supersound process and 4000 rev/mins, continue to stir and made high-blocking water-gel of the present invention in 4 hours.
Embodiment 7
The distilled water of 6 gram PVA124,3 milliliters of ethanol, 91 grams being added reactors, 90 ℃ of constant temperature oil baths heating, connect condensation reflux unit, is that reaction made PVA solution in 4 hours under 2500 rev/mins the mechanical stirring with rotating speed; Add weight subsequently and be the fatty alcohol-polyoxyethylene ether of 0.2 gram, under the mechanical stirring of 59KHz supersound process and 4000 rev/mins, continue to stir and made high-blocking water-gel of the present invention in 4 hours.
With the obstruct glue of above embodiment preparation, be coated on PET and the BOPP film with every square metre 7 gram by hand, its barrier can improve 20 to 70 times respectively.
Provide the foregoing description just in order to demonstrate the invention, rather than for protection scope of the present invention is carried out any restriction.Those skilled in the art are according to spirit of the present invention, and any change that invention is carried out is all within protection scope of the present invention.
Claims (7)
1, a kind of high-blocking water-gel for food package is made up of following component and content, and each component content is weight percentage:
Polyvinyl alcohol 5-20%
Modifier 1-5%
High barrier nano silicon 0.5-2%
Tensio-active agent 0.1-0.5%
Distilled water surplus
Wherein modifier is ethanol or ethylene glycol or 1, the 4-butyleneglycol.
2, as the said high-blocking water-gel for food package of claim 1, wherein said polyvinyl alcohol comprises the polyvinyl alcohol raw material of all trades mark and all alcoholysis degrees.
3, as the said high-blocking water-gel for food package of claim 2, wherein said polyvinyl alcohol is that the trade mark is 1750,124 polyvinyl alcohol.
4, as the said high-blocking water-gel for food package of claim 1, wherein said high-barrier comprises surface treated nano silicon and not surface treated nano silicon every property nanometer titanium dioxide silicon materials.
5,, it is characterized in that tensio-active agent is CognisA3065, CognisA1080 or fatty alcohol-polyoxyethylene ether as the said high-blocking water-gel for food package of claim 1.
6. method for preparing the said high-blocking water-gel for food package of claim 1, step is carried out in the following order:
I. in proportion polyvinyl alcohol, distilled water, tensio-active agent are joined in the reactor, reaction made polyvinyl alcohol solution in 3-5 hour under 80-100 ℃ of constant temperature oil bath and mechanical stirring;
Ii. in the polyvinyl alcohol solution that the i step makes, add efficient barrier material nano silicon, under supersound process and mechanical stirring, continue to stir more than 2 hours, make high-blocking water-gel.
7, efficiently intercept the preparation method of polyvinyl alcohol glue according to claim 1, wherein said is heating, water dissolution, ultrasonication and mechanical stirring with the polyvinyl alcohol dissolving method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710028733 CN101070416A (en) | 2007-06-21 | 2007-06-21 | High-blocking water-gel for food package and preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710028733 CN101070416A (en) | 2007-06-21 | 2007-06-21 | High-blocking water-gel for food package and preparing method |
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| Publication Number | Publication Date |
|---|---|
| CN101070416A true CN101070416A (en) | 2007-11-14 |
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ID=38897841
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710028733 Pending CN101070416A (en) | 2007-06-21 | 2007-06-21 | High-blocking water-gel for food package and preparing method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911385A (en) * | 2012-10-29 | 2013-02-06 | 南京大地冷冻食品有限公司 | Preparation method of high-strength degradable composite film |
| CN105383779A (en) * | 2015-11-11 | 2016-03-09 | 无锡市路华肥料科技有限公司 | Fertilizer storage box |
| CN111518489A (en) * | 2020-04-08 | 2020-08-11 | 温州钞塑新材料科技有限公司 | High-barrier glue and film containing same |
-
2007
- 2007-06-21 CN CN 200710028733 patent/CN101070416A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102911385A (en) * | 2012-10-29 | 2013-02-06 | 南京大地冷冻食品有限公司 | Preparation method of high-strength degradable composite film |
| CN105383779A (en) * | 2015-11-11 | 2016-03-09 | 无锡市路华肥料科技有限公司 | Fertilizer storage box |
| CN111518489A (en) * | 2020-04-08 | 2020-08-11 | 温州钞塑新材料科技有限公司 | High-barrier glue and film containing same |
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Open date: 20071114 |