CN104974384A - Sodium alginate film and preparation method thereof - Google Patents
Sodium alginate film and preparation method thereof Download PDFInfo
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- CN104974384A CN104974384A CN201510358784.XA CN201510358784A CN104974384A CN 104974384 A CN104974384 A CN 104974384A CN 201510358784 A CN201510358784 A CN 201510358784A CN 104974384 A CN104974384 A CN 104974384A
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Abstract
The invention relates to a sodium alginate film and its preparation method. According to the invention, the sodium alginate film is obtained by freeze-drying molding of sodium alginate and polyvinyl alcohol which are used as structure carriers. The preparation method comprises the following steps: dissolving PVA in water of 75-85 DEG C, and filtering to obtain a PVA aqueous solution; adding sodium alginate into the PVA aqueous solution, stirring, and pouring the solution into a mold; freeze-drying the mold at the temperature of minus 35-10 DEG C to obtain a porous and flexible freeze-dried film in the mold; taking the freeze-dried film out, adding the freeze-fried film into an ethanol aqueous solution of CaCl2, immersing, washing and airing to obtain the sodium alginate film. The sodium alginate film provided by the invention is porous and ventilated, has good elasticity, good flexibility, high water absorption and the like, and has fine and tough pores. The sodium alginate film has effects of resisting oxidation, maintaining beauty and keeping young, has a certain effects of diminishing inflammation and promoting wound healing, and has good disinfection and sterilization effects. The preparation method provided by the invention is simple and highly-efficient.
Description
Technical field
The invention belongs to film and preparation field thereof, particularly a kind of sodium alginate film and preparation method thereof.
Background technology
Sodium alginate (SA) is the polysaccharide superpolymer extracted from brown alga and some bacterium, because of have excellent biocompatibility, biodegradability and have no side effect, the feature such as nonreactive substance, be widely used in the fields such as food, medicine, weaving, daily-use chemical industry.Contain a large amount of hydrophilic radicals in the structure of sodium alginate (SA) as carboxyl and hydroxyl, when existence is dissolved in water, dissociation gegenion small molecules out easily runs off, and causes film to dissolve unstable problem.Polyvinyl alcohol (PVA) is as non-ionic polyalcohol, molecular structure is regular, it is strict linear structure, containing hydroxyl on molecular chain, because having good wetting ability, and its steady chemical structure, the film-forming properties that physical strength is high and good, thus more and more extensively becomes one of hydrophilic film material.So, by blended for these two kinds of materials, both advantages can be utilized to prepare Novel facial mask material.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of sodium alginate film and preparation method thereof, and this sodium alginate film has the good and water ratio advantages of higher of good springiness, snappiness.This preparation method is easy and simple to handle, and efficiency is high.
A kind of sodium alginate film of the present invention, described sodium alginate film sodium alginate and polyvinyl alcohol are structure carrier, and lyophilize is shaping to be obtained.
The preparation method of a kind of sodium alginate film of the present invention, comprising:
(1) PVAC polyvinylalcohol is dissolved in the water of 75-85 DEG C, filters, obtain the PVA aqueous solution; Wherein, after filtering, the mass percentage of polyvinyl alcohol water solution is 1-10%;
(2) sodium alginate is joined in the PVA aqueous solution obtained in step (1), stir, pour in mould; Wherein, the mass ratio of sodium alginate and PVA is 1:0.1-10;
(3) freezing at the mould of step (2) being placed in-35 DEG C ~ 10 DEG C, obtain freeze-drying film in mould;
(4) the freeze-drying film in step (3) is taken out, add CaCl
2aqueous ethanolic solution, soak, after flushing and get final product; Wherein, sodium alginate and CaCl
2mass ratio be 1:0.1-5, the mass ratio of second alcohol and water is 10-100:100, CaCl
2the mass concentration of aqueous ethanolic solution be 1-5%.
In described step (1), the temperature of water is 80 DEG C.
In described step (2), the mass ratio of sodium alginate and PVA is 1:2-8.
The time of stirring in described step (2) is 100 ~ 120min, and stirring velocity is 1000r/min.
Sodium alginate and CaCl in described step (4)
2mass ratio be 1:0.2-4.
In described step (4), the mass ratio of ethanol and water is 30-80:100.
The time of soaking in described step (4) is 2h.
The mode of rinsing in described step (4) is for using distilled water flushing 2-6 time.
The sodium alginate film that the present invention obtains has the good and water ratio advantages of higher of good springiness, snappiness, and method of the present invention is easy and simple to handle, and efficiency is high.
beneficial effect
(1) sodium alginate film of the present invention has the good and water ratio advantages of higher of porousness, good springiness, snappiness, and hole is finer and closely woven tough;
(2) sodium alginate film of the present invention has effect that is anti-oxidant, moisturizing beautifying face and moistering lotion, all deposits certain effect, good sterilization effect to anti-inflammatory and wound healing;
(3) preparation method of the present invention is easy and simple to handle, and efficiency is high.
Embodiment
Below in conjunction with specific embodiment, set forth the present invention further.Should be understood that these embodiments are only not used in for illustration of the present invention to limit the scope of the invention.In addition should be understood that those skilled in the art can make various changes or modifications the present invention, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the present invention's instruction.
Embodiment 1
20g polyvinyl alcohol (PVA) is dissolved in the hot water of 380g 80 DEG C, filter 5% polyvinyl alcohol water solution.By 25g sodium alginate instillation PVA solution above, continue to stir 30min, 1000r/min, then pour mould into, freeze-drying film forming at temperature-15 DEG C, take out.Add the CaCl of 300g3%
2ethanol water mixed liquid, wherein ethanol: water=50:100 (mass ratio), soak 2h; Reacted film distilled water flushing 3-6 time, then dry.
Embodiment 2
30g polyvinyl alcohol (PVA) is dissolved in the hot water of 270g 80 DEG C, filter 10% polyvinyl alcohol water solution.By 25g sodium alginate instillation PVA solution above, continue to stir 30min, 1000r/min, then pour mould into, freeze-drying film forming at temperature-25 DEG C, take out.Add the CaCl of 500g 4%
2ethanol water mixed liquid, wherein ethanol: water=100:100 (mass ratio), soak 2h; Reacted film distilled water flushing 4-6 time, then dry.
Claims (9)
1. a sodium alginate film, is characterized in that, described sodium alginate film is with sodium alginate and polyvinyl alcohol for structure carrier, and lyophilize is shaping to be obtained.
2. a preparation method for sodium alginate film, comprising:
(1) PVAC polyvinylalcohol is dissolved in the water of 75-85 DEG C, filters, obtain the PVA aqueous solution; Wherein, after filtering, the mass percentage of polyvinyl alcohol water solution is 1-10%;
(2) sodium alginate is joined in the PVA aqueous solution obtained in step (1), stir, pour in mould; Wherein, the mass ratio of sodium alginate and PVA is 1:0.1-10;
(3) freezing at the mould of step (2) being placed in-35 DEG C ~ 10 DEG C, obtain freeze-drying film in mould;
(4) the freeze-drying film in step (3) is taken out, add CaCl
2aqueous ethanolic solution, soak, after flushing and get final product; Wherein, sodium alginate and CaCl
2mass ratio be 1:0.1-5, the mass ratio of second alcohol and water is 10-100:100, CaCl
2the mass concentration of aqueous ethanolic solution be 1-5%.
3. the preparation method of a kind of sodium alginate film according to claim 2, is characterized in that, in described step (1), the temperature of water is 80 DEG C.
4. the preparation method of a kind of sodium alginate film according to claim 2, is characterized in that, in described step (2), the mass ratio of sodium alginate and PVA is 1:2-8.
5. the preparation method of a kind of sodium alginate film according to claim 2, is characterized in that, the time of stirring in described step (2) is 100 ~ 120min, and stirring velocity is 1000r/min.
6. the preparation method of a kind of sodium alginate film according to claim 2, is characterized in that, sodium alginate and CaCl in described step (4)
2mass ratio be 1:0.2-4.
7. the preparation method of a kind of sodium alginate film according to claim 2, is characterized in that, in described step (4), the mass ratio of ethanol and water is 30-80:100.
8. the preparation method of a kind of sodium alginate film according to claim 2, is characterized in that, the time of soaking in described step (4) is 2h.
9. the preparation method of a kind of sodium alginate film according to claim 2, is characterized in that, the mode of rinsing in described step (4) is for using distilled water flushing 2-6 time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510358784.XA CN104974384A (en) | 2015-06-25 | 2015-06-25 | Sodium alginate film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510358784.XA CN104974384A (en) | 2015-06-25 | 2015-06-25 | Sodium alginate film and preparation method thereof |
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| CN104974384A true CN104974384A (en) | 2015-10-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510358784.XA Pending CN104974384A (en) | 2015-06-25 | 2015-06-25 | Sodium alginate film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106852907A (en) * | 2015-12-08 | 2017-06-16 | 董玲 | A kind of production method of soluble lyophilized film and products thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09278926A (en) * | 1996-04-10 | 1997-10-28 | Tokushima Pref Gov | Gas-permeable film |
| CN103655333A (en) * | 2013-12-12 | 2014-03-26 | 青岛海芬海洋生物科技有限公司 | Aloe whitening facial mask for preventing and treating acne |
| CN104073000A (en) * | 2014-06-10 | 2014-10-01 | 浙江省农业科学院 | Edible fluid sericin fresh-keeping film and preparation process |
| CN104109254A (en) * | 2014-07-10 | 2014-10-22 | 四川大学 | I-type collagen-sodium alginate-polyvinyl alcohol composite film and preparation method thereof |
-
2015
- 2015-06-25 CN CN201510358784.XA patent/CN104974384A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09278926A (en) * | 1996-04-10 | 1997-10-28 | Tokushima Pref Gov | Gas-permeable film |
| CN103655333A (en) * | 2013-12-12 | 2014-03-26 | 青岛海芬海洋生物科技有限公司 | Aloe whitening facial mask for preventing and treating acne |
| CN104073000A (en) * | 2014-06-10 | 2014-10-01 | 浙江省农业科学院 | Edible fluid sericin fresh-keeping film and preparation process |
| CN104109254A (en) * | 2014-07-10 | 2014-10-22 | 四川大学 | I-type collagen-sodium alginate-polyvinyl alcohol composite film and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郝晓丽等: "海藻酸钙-聚乙烯醇半互穿网络多孔膜制备和性能", 《功能材料》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106852907A (en) * | 2015-12-08 | 2017-06-16 | 董玲 | A kind of production method of soluble lyophilized film and products thereof |
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Application publication date: 20151014 |
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