CN104761739A - Preparation method of degradable environment-friendly packaging film - Google Patents
Preparation method of degradable environment-friendly packaging film Download PDFInfo
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- CN104761739A CN104761739A CN201510139589.8A CN201510139589A CN104761739A CN 104761739 A CN104761739 A CN 104761739A CN 201510139589 A CN201510139589 A CN 201510139589A CN 104761739 A CN104761739 A CN 104761739A
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- preparation
- chitosan
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- degradable environment
- friendly type
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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)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Cosmetics (AREA)
Abstract
The invention discloses a preparation method of a degradable environment-friendly packaging film, relating to the field of packaging material preparation. The preparation method comprises the following steps: dissolving chitosan, preparing a hydroxypropyl methylcellulose solution, mixing, adding a metal ion compound and preparing the film. The chitosan is mixed with hydroxypropyl methylcellulose and charged with the metal ions to prepare the environment-friendly packaging film. The environment-friendly packaging film has the antimicrobial effect. According to the technical scheme, the method has the advantages of simple and reasonable technique, high yield, no environment pollution and lower cost.
Description
Technical field
The present invention relates to wrapping material preparation field, particularly a kind of preparation method of degradable environment-friendly type packing film.
Background technology
In existing life, cutlery box, packing bag and disposable garbage bag, along with people's increase to its demand in life, plastic refuse has become the large public hazards polluting city and ocean, the white pollution problems that the wrapping material of these waste gas cause becomes the focus of social concerns, in the urgent need to the degradable packing material that demand is new.
Chitosan is natural polymer, is to be hydrolyzed in the basic conditions by chitin make its part deacetylation and obtain, and is the unique alkaline polysaccharide of current nature; have the performance of many uniquenesses, it is nontoxic, and film forming properties is good; can be degradable, be considered to a kind of potential packing film material.
In prior art, chitosan is utilized to prepare the technique of packing film also varied, but mostly complex process, and obtained rate is lower, and cost is higher.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of preparation method of degradable environment-friendly type packing film, and to solve the complex process caused in prior art, obtained rate is lower, the more high multinomial defect of cost.
For achieving the above object, the invention provides following technical scheme: a kind of preparation method of degradable environment-friendly type packing film, comprises the following steps:
(1) chitosan is dissolved: get chitosan and be dissolved in acetic acid solution, obtain the chitosan solution that mass concentration is 30-35g/L;
(2) Gonak is prepared: be 10-15 g/L Gonak by distilled water configuration quality concentration;
(3) mix: the chitosan solution of preparation in step (1) is mixed with the Gonak prepared in step (2);
(4) add metal ion compound: joined by metal ion compound in the mixed solution of preparation in step (3), then stir with agitator, ultrasonic degas, then casting film-forming;
(5) masking: the film in step (4) is put into the dry 4-6h of loft drier, then uses NaOH solution soaking 1h, taking-up water is taken off film, is dried, obtain packing film under room temperature after rinsing and being neutrality to pH.
Preferably, in described step (3), chitosan solution mixes according to 1:0.8 volume ratio with Gonak.
Preferably, in described step (4), agitator adopts magnetic stirrer.
Preferably, the temperature in described step (4) during casting film-forming controls at 25-45 DEG C.
Preferably, in described step (5), the film in step (4) is put into the dry 4h of loft drier.
Preferably, in described step (5), the concentration of NaOH solution is 2.0mol/L.
----the large processing step of mixing--adding metal ion compound--masking five of preparing Gonak that adopts technical scheme beneficial effect of the present invention to be: by dissolving chitosan, chitosan mixing Vltra tears is simultaneously with metal ion, environmental protection type packing film can be obtained, there is antibacterial effect simultaneously, the technical scheme of this invention, technique advantages of simple, obtained rate is high, free from environmental pollution, cost is lower.
Embodiment
embodiment 1:
A preparation method for degradable environment-friendly type packing film, comprises the following steps:
(1) chitosan is dissolved: get chitosan and be dissolved in acetic acid solution, obtain the chitosan solution that mass concentration is 30g/L;
(2) Gonak is prepared: be 10 g/L Gonaks by distilled water configuration quality concentration;
(3) mix: the chitosan solution of preparation in step (1) is mixed according to volume ratio 1:0.8 with the Gonak prepared in step (2);
(4) add metal ion compound: joined by metal ion compound in the mixed solution of preparation in step (3), then stir with magnetic stirrer, ultrasonic degas, then at 25 DEG C of casting film-formings;
(5) masking: the film in step (4) is put into the dry 4h of loft drier, then uses 2.0mol/L NaOH solution soaking 1h, and taking-up water is taken off film, dried, obtain packing film under room temperature after rinsing and being neutrality to pH.
embodiment 2:
All the other are identical with embodiment 1, and difference is, in described step (1), to get chitosan and be dissolved in acetic acid solution, obtains the chitosan solution that mass concentration is 35g/L; Described step (2) is middle is 15 g/L Gonaks by distilled water configuration quality concentration; Joined by metal ion compound in the mixed solution of preparation in step (3) in described step (4), then stir with magnetic stirrer, ultrasonic degas, then at 45 DEG C of casting film-formings;
embodiment 3:
All the other are identical with embodiment 1, and difference is, in described step (1), to get chitosan and be dissolved in acetic acid solution, obtains the chitosan solution that mass concentration is 33g/L; Described step (2) is middle is 12g/L Gonak by distilled water configuration quality concentration; Joined by metal ion compound in the mixed solution of preparation in step (3) in described step (4), then stir with magnetic stirrer, ultrasonic degas, then at 32 DEG C of casting film-formings;
Based on above-mentioned:--prepare Gonak by dissolving chitosan and--mix the large processing step of--adding metal ion compound--masking five, chitosan mixing Vltra tears is simultaneously with metal ion, environmental protection type packing film can be obtained, there is antibacterial effect simultaneously, the technical scheme of this invention, technique advantages of simple, obtained rate is high, free from environmental pollution, cost is lower.
Obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.
Claims (6)
1. a preparation method for degradable environment-friendly type packing film, is characterized in that: comprise the following steps:
Dissolve chitosan: get chitosan and be dissolved in acetic acid solution, obtain the chitosan solution that mass concentration is 30-35g/L;
Prepare Gonak: be 10-15 g/L Gonak by distilled water configuration quality concentration;
Mixing: the chitosan solution of preparation in step (1) is mixed with the Gonak prepared in step (2);
Add metal ion compound: joined by metal ion compound in the mixed solution of preparation in step (3), then stir with agitator, ultrasonic degas, then casting film-forming;
Masking: the film in step (4) is put into the dry 4-6h of loft drier, then uses NaOH solution soaking 1h, taking-up water is taken off film, is dried, obtain packing film under room temperature after rinsing and being neutrality to pH.
2. the preparation method of degradable environment-friendly type packing film according to claim 1, is characterized in that:
In described step (3), chitosan solution mixes according to 1:0.8 volume ratio with Gonak.
3. the preparation method of degradable environment-friendly type packing film according to claim 1, is characterized in that: in described step (4), agitator adopts magnetic stirrer.
4. the preparation method of degradable environment-friendly type packing film according to claim 1, is characterized in that: the temperature in described step (4) during casting film-forming controls at 25-45 DEG C.
5. the preparation method of degradable environment-friendly type packing film according to claim 1, is characterized in that:
In described step (5), the film in step (4) is put into the dry 4h of loft drier.
6. the preparation method of degradable environment-friendly type packing film according to claim 1, is characterized in that:
In described step (5), the concentration of NaOH solution is 2.0mol/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139589.8A CN104761739A (en) | 2015-03-29 | 2015-03-29 | Preparation method of degradable environment-friendly packaging film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510139589.8A CN104761739A (en) | 2015-03-29 | 2015-03-29 | Preparation method of degradable environment-friendly packaging film |
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| Publication Number | Publication Date |
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| CN104761739A true CN104761739A (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510139589.8A Pending CN104761739A (en) | 2015-03-29 | 2015-03-29 | Preparation method of degradable environment-friendly packaging film |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105131338A (en) * | 2015-08-18 | 2015-12-09 | 南宁市聚祥塑料制品有限责任公司 | Edible packing material |
| EP3932202A3 (en) * | 2020-07-03 | 2022-05-11 | Uniwersytet Ekonomiczny W Poznaniu | Antimicrobial material, especially packaging material, method of obtaining the antimicrobial material and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508175A (en) * | 2002-12-13 | 2004-06-30 | 上海爱普食品工业有限公司 | Method for preparing composite comestible shell polysaccharide membrane |
| CN101717529A (en) * | 2009-11-17 | 2010-06-02 | 湘潭大学 | Chitosan composite material and method for preparing same |
| CN101899171A (en) * | 2010-08-20 | 2010-12-01 | 厦门大学 | Method for preparing chitosan/cellulose composite material |
| CN103601904A (en) * | 2013-11-21 | 2014-02-26 | 福州大学 | Preparation method of chitosan/polyvinyl alcohol composite material |
-
2015
- 2015-03-29 CN CN201510139589.8A patent/CN104761739A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1508175A (en) * | 2002-12-13 | 2004-06-30 | 上海爱普食品工业有限公司 | Method for preparing composite comestible shell polysaccharide membrane |
| CN101717529A (en) * | 2009-11-17 | 2010-06-02 | 湘潭大学 | Chitosan composite material and method for preparing same |
| CN101899171A (en) * | 2010-08-20 | 2010-12-01 | 厦门大学 | Method for preparing chitosan/cellulose composite material |
| CN103601904A (en) * | 2013-11-21 | 2014-02-26 | 福州大学 | Preparation method of chitosan/polyvinyl alcohol composite material |
Non-Patent Citations (1)
| Title |
|---|
| 吴俊红: ""壳聚糖/羟丙基甲基纤维素包装薄膜及其改性研究"", 《中国优秀硕士学位论文全文数据库 医药卫生科技辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105131338A (en) * | 2015-08-18 | 2015-12-09 | 南宁市聚祥塑料制品有限责任公司 | Edible packing material |
| EP3932202A3 (en) * | 2020-07-03 | 2022-05-11 | Uniwersytet Ekonomiczny W Poznaniu | Antimicrobial material, especially packaging material, method of obtaining the antimicrobial material and application thereof |
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Application publication date: 20150708 |