CN103540068A - Production process of PVA (polyvinyl alcohol)-based composite packaging material - Google Patents
Production process of PVA (polyvinyl alcohol)-based composite packaging material Download PDFInfo
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- CN103540068A CN103540068A CN201310455689.2A CN201310455689A CN103540068A CN 103540068 A CN103540068 A CN 103540068A CN 201310455689 A CN201310455689 A CN 201310455689A CN 103540068 A CN103540068 A CN 103540068A
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- pva
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- dialdehyde starch
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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- Compositions Of Macromolecular Compounds (AREA)
- Biological Depolymerization Polymers (AREA)
Abstract
The invention discloses a production process of a PVA (polyvinyl alcohol)-based composite packaging material, relating to the field of film packaging materials. The production process comprises the following three technical processes: preparation of dialdehyde starch, preparation of jute fibers and preparation of a PVA-based composite film. According to the process method, in the preparation process of the dialdehyde starch, corn starch is used as a raw material, no pollution is caused, the cost is low, the raw material is sufficient, a far-infrared quick constant-temperature drying box is used as drying equipment, the dialdehyde starch is dried sufficiently, and no impurity is doped; in the preparation process of the jute fibers, the temperature control is reasonable, a right amount of reagent is added, the jute fibers are pulverized through a YSC-701 type ultrafine pulverizer, and the pulverized fibers are small in particle size and favorable in pulverization effect; and in the preparation process of the PVA-based composite film, parameters such as addition of each component, temperature, time and the like are strictly controlled, thereby ensuring that the prepared PVA-based composite film has favorable mechanical property and water resistance and can meet the requirements for practical production. By using the biological material as the raw material for production, the PVA-based composite film produced by the process is low in cost and degradable, thus greatly reducing environmental pollution.
Description
Technical field
The present invention relates to wrapping material field, be specifically related to a kind of production technique of PVA base compound package material.
Background technology
Progress and the raising of people to environmental protection consciousness along with science, oneself develops into present fully biodegradable plastics by the initial interpolation degradable substance plastic that bursts apart degradable plastics, be that matrix is no longer polyethylene, the non-degradable plastics such as polystyrene, but polyvinyl alcohol that can be degradable, poly(lactic acid), poly butyric ester and polycaprolactam etc., application number is that CN200910027113.X discloses a kind of PVA-based coating-film fresh-keeping new packaging materials and preparation technology, the concentration proportioning that comprises novel material is: polyvinyl alcohol and water are 3-8%, stearic acid and water are 1-3%, glutaraldehyde and water are 0.35-0.45, polyvinyl alcohol soaks 2 hours under normal temperature condition, heating for dissolving, stearic acid is dissolved in 95% ethanol, heating for dissolving, when the temperature of the two all reaches more than 85 ℃, hybrid reaction 3-lOmin, then adds glutaraldehyde to react 30-5Omin at 85 ℃, regulates pH value 4-6.5, makes PVA-based fresh-keeping compelx coating material.This preparation method adopts glutaraldehyde to make the linking agent of stearic acid and polyvinyl alcohol binary substrate, the PVA-based coating-film fresh-keeping new packaging materials that crosslinking reaction obtains can significantly reduce the permeability rate after PVA-based film forming, improved water tolerance, and produce stronger germ resistance, but the wrapping material that this technique makes have non-biodegradable, can produce a large amount of rubbish undoubtedly, cause environmental pollution, brought inconvenience to people's life, the product mechanical property that this preparation method makes simultaneously and water resistance are not fine.
Summary of the invention
Problem to be solved by this invention is to provide a kind of degradable, pollution-free, environmentally friendly, the production technique of the PVA base compound package material that mechanical property and water resistance are good simultaneously.
To achieve these goals, the technical scheme that the present invention takes is: a kind of production technique of PVA base compound package material, comprises following processing step:
(1) preparation of dialdehyde starch: take 25g
be dissolved in 21 ℃ completely, in the distilled water of 980ml, then add 98g W-Gum, mechanical stirring 3.9 h at 36 ℃, after question response finishes, filter mixture, and filter cake water repetitive scrubbing is to nothing
ion, then use washing with acetone, progressively heat up and be dried to obtain white dialdehyde starch;
(2) preparation of jute fibre: after jute fibre is pulverized, with the distilled water washs of 51 ℃ 3～5 times, then with stirring 24h under 1mol/L NaOH solution normal temperature, distilled water wash is after neutrality, by washing with alcohol 3～5 times, centrifugal, dry 23 h at 105 ℃;
(3) preparation of PVA group compound film: the dialdehyde starch that step (1) is made is dispersed in distilled water, 85～90 ℃ of gelatinization 21min, add the PVA solution of 6～9g and 30～40g glycerine in 90 ℃ of abundant mechanical stirring 1h, each component is mixed, add again the processed jute fibre of 4～8g step (2) to continue to stir after 0.5～1h cooling, reverse mould, finally, by film dry 23h at 52 ℃, under same humidity condition, balance 5d can obtain product.
Preferably, the equipment that in described step (1), dry dialdehyde starch is used is far infrared fast constant temperature loft drier.
Preferably, the equipment that in described step (2), jute fibre pulverizing is used is YSC-701 type supper micron mill.
Preferably, in described step (3), the composition proportion of glycerine is: glycerine 80%, distilled water 20%.
Adopt technical scheme of the present invention, in the preparation process of described dialdehyde starch, adopt W-Gum as raw material, pollution-free, and cost is low, raw material is sufficient, described drying plant adopts far infrared fast constant temperature loft drier, dialdehyde starch is dried fully and inclusion-free adulterates into, in the preparation process of described jute fibre, temperature is controlled rationally, reagent adds in right amount, and adopt YSC-701 type supper micron mill to carry out pulverization process to jute fibre, fiber particle diameter after pulverizing is little, good crushing effect, in the preparation process of PVA group compound film, pass through strict add-on and the temperature of controlling each component, the parameters such as time, the PVA group compound film mechanical property and the water resistance that make are good, meet actual production requirement, the PVA group compound film that this explained hereafter goes out is owing to adopting biomaterial as raw materials for production, cost is low, degradable, therefore this greatly reduces environmental pollution.
Embodiment
embodiment 1:
(1) preparation of dialdehyde starch: take 25g
be dissolved in 21 ℃ completely, in the distilled water of 980ml, then add 98g W-Gum, mechanical stirring 3.9 h at 36 ℃, after question response finishes, filter mixture, and filter cake water repetitive scrubbing is to nothing
ion, then use washing with acetone, is used far infrared fast constant temperature loft drier dry the white dialdehyde starch that progressively heats up;
(2) preparation of jute fibre: jute fibre is put into after the pulverizing of YSC-701 type supper micron mill, with the distilled water washs of 51 ℃ 4 times, then with stirring 24h under 1mol/L NaOH solution normal temperature, distilled water wash is after neutrality, by washing with alcohol 4 times, centrifugal, dry 23 h at 105 ℃;
(3) preparation of PVA group compound film: the dialdehyde starch that step (1) is made is dispersed in distilled water, 85 ℃ of gelatinization 21min, add the PVA solution of 6g and 30g glycerine in 90 ℃ of abundant mechanical stirring 1h, the composition proportion of described glycerine is glycerine 80%, distilled water 20%, each component is mixed, add again the processed jute fibre of 4g step (2) to continue to stir after 0.5h cooling, reverse mould, finally, by film dry 23h at 52 ℃, under same humidity condition, balance 5d can obtain product.
embodiment 2:all the other are identical with embodiment 1, and difference is in described step (2), distilled water wash 5 times, washing with alcohol 5 times; In described step (3), controlling gelatinization point is 88 ℃, adds 8gPVA solution and 35g glycerine, and be 1h cooling time.
embodiment 3:all the other are identical with embodiment 1, and difference is, in described step (1), and distilled water wash 5 times, washing with alcohol 5 times; In described step (3), controlling gelatinization point is 90 ℃, adds 9gPVA solution and 38g glycerine, and be 1h cooling time.
After above processing step, take out PVA group compound film sample, to be measured:
From above data, the elongation at break of producing and tensile strength are all higher, elongation at break is more than 90%, more than tensile strength has reached 10MPa especially, therefore mechanical property is good, after tested, its water resistance is also fine, degradation rate reaches more than 98%, substantially can be degradable, and low in the pollution of the environment.
Obviously specific implementation of the present invention is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present invention design and technical scheme carry out; or without improving, design of the present invention and technical scheme are directly applied to other occasion, all within protection scope of the present invention.
Claims (4)
1. a production technique for PVA base compound package material, comprises following processing step:
(1) preparation of dialdehyde starch: take 25g
be dissolved in 21 ℃ completely, in the distilled water of 980ml, then add 98g W-Gum, mechanical stirring 3.9 h at 36 ℃, after question response finishes, filter mixture, and filter cake water repetitive scrubbing is to nothing
ion, then use washing with acetone, progressively heat up and be dried to obtain white dialdehyde starch;
(2) preparation of jute fibre: after jute fibre is pulverized, with the distilled water washs of 51 ℃ 3～5 times, then with stirring 24h under 1mol/L NaOH solution normal temperature, distilled water wash is after neutrality, by washing with alcohol 3～5 times, centrifugal, dry 23 h at 105 ℃;
(3) preparation of PVA group compound film: the dialdehyde starch that step (1) is made is dispersed in distilled water, 85～90 ℃ of gelatinization 21min, add the PVA solution of 6～9g and 30～40g glycerine in 90 ℃ of abundant mechanical stirring 1h, each component is mixed, add again the processed jute fibre of 4～8g step (2) to continue to stir after 0.5～1h cooling, reverse mould, finally, by film dry 23h at 52 ℃, under same humidity condition, balance 5d can obtain product.
2. the production technique of a kind of PVA base compound package material according to claim 1, is characterized in that: the equipment that in described step (1), dry dialdehyde starch is used is far infrared fast constant temperature loft drier.
3. the production technique of a kind of PVA base compound package material according to claim 1, is characterized in that: the equipment that in described step (2), jute fibre pulverizing is used is YSC-701 type supper micron mill.
4. the production technique of a kind of PVA base compound package material according to claim 1, is characterized in that: in described step (3), the composition proportion of glycerine is: glycerine 80%, distilled water 20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310455689.2A CN103540068A (en) | 2013-09-29 | 2013-09-29 | Production process of PVA (polyvinyl alcohol)-based composite packaging material |
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| CN201310455689.2A CN103540068A (en) | 2013-09-29 | 2013-09-29 | Production process of PVA (polyvinyl alcohol)-based composite packaging material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803094A (en) * | 2015-03-27 | 2015-07-29 | 北京林业大学 | Preparation method of external film for infrared heat wave nondestructive testing |
| CN105315477A (en) * | 2015-12-01 | 2016-02-10 | 仇颖超 | Preparation method of boron fiber modified chitosan degradable film |
| CN105885110A (en) * | 2016-05-27 | 2016-08-24 | 黑龙江八农垦大学 | Degradable packaging film material and preparing method and application thereof |
| CN106432814A (en) * | 2016-09-30 | 2017-02-22 | 华南理工大学 | Starch/polyvinyl alcohol composite material and preparation method thereof |
| CN107236318A (en) * | 2017-06-28 | 2017-10-10 | 太仓清宇特种塑料有限公司 | A kind of degradable bamboo is nanocomposite moulded |
| CN107236319A (en) * | 2017-06-28 | 2017-10-10 | 太仓清宇特种塑料有限公司 | A kind of degradable bamboo is nanocomposite moulded and preparation method thereof |
| CN109082135A (en) * | 2018-07-04 | 2018-12-25 | 合肥帧讯低温科技有限公司 | A kind of high-strength composite packaging material and preparation method thereof |
| CN110591390A (en) * | 2019-09-19 | 2019-12-20 | 广东工业大学 | Dialdehyde starch crosslinked fiber/cottonseed protein composite material and preparation method and application thereof |
-
2013
- 2013-09-29 CN CN201310455689.2A patent/CN103540068A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 武战翠: "聚乙烯醇基生物可降解复合材料的制备及性能研究", 《中国优秀硕士学位论文全文数据库 工程科技І辑（月刊）》 * |
| 武战翠: "聚乙烯醇基生物可降解复合材料的制备及性能研究", 《中国优秀硕士学位论文全文数据库 工程科技І辑（月刊）》, no. 03, 15 March 2013 (2013-03-15), pages 016 - 82 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803094A (en) * | 2015-03-27 | 2015-07-29 | 北京林业大学 | Preparation method of external film for infrared heat wave nondestructive testing |
| CN104803094B (en) * | 2015-03-27 | 2017-05-31 | 北京林业大学 | A kind of preparation method of infrared thermal wave NDT peplos |
| CN105315477A (en) * | 2015-12-01 | 2016-02-10 | 仇颖超 | Preparation method of boron fiber modified chitosan degradable film |
| CN105885110A (en) * | 2016-05-27 | 2016-08-24 | 黑龙江八农垦大学 | Degradable packaging film material and preparing method and application thereof |
| CN105885110B (en) * | 2016-05-27 | 2018-04-20 | 黑龙江八一农垦大学 | A kind of degradable package membrane material, preparation method and application |
| CN106432814A (en) * | 2016-09-30 | 2017-02-22 | 华南理工大学 | Starch/polyvinyl alcohol composite material and preparation method thereof |
| CN107236318A (en) * | 2017-06-28 | 2017-10-10 | 太仓清宇特种塑料有限公司 | A kind of degradable bamboo is nanocomposite moulded |
| CN107236319A (en) * | 2017-06-28 | 2017-10-10 | 太仓清宇特种塑料有限公司 | A kind of degradable bamboo is nanocomposite moulded and preparation method thereof |
| CN109082135A (en) * | 2018-07-04 | 2018-12-25 | 合肥帧讯低温科技有限公司 | A kind of high-strength composite packaging material and preparation method thereof |
| CN110591390A (en) * | 2019-09-19 | 2019-12-20 | 广东工业大学 | Dialdehyde starch crosslinked fiber/cottonseed protein composite material and preparation method and application thereof |
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Application publication date: 20140129 |