CN104892994A - Banana skin-based fully-degradable film and preparation method thereof - Google Patents
Banana skin-based fully-degradable film and preparation method thereof Download PDFInfo
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- CN104892994A CN104892994A CN201510201317.6A CN201510201317A CN104892994A CN 104892994 A CN104892994 A CN 104892994A CN 201510201317 A CN201510201317 A CN 201510201317A CN 104892994 A CN104892994 A CN 104892994A
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Abstract
The invention discloses a banana skin-based fully-degradable film characterized by comprising the following raw materials by weight: 20-30 parts of banana skin, 3-5 parts of corncob core, 20-30 parts of corn starch, 1-2 parts of citric acid, 20-30 parts of polyvinyl alcohol, 15-25 parts of glycerin, 3-5 parts of sorbitan monostearate, 4-10 parts of ethyl orthosilicate, 2-4 parts of polyethylene glycol (peg), and 2-4 parts of hydroxyl silicone oil. The banana skin-based fully-degradable film has good mechanical properties and water resistance, and good degradation performance, and is low in price, green, and environmentally-friendly.
Description
Technical field
The present invention relates to thin film materials art, be specifically related to a kind of Pericarpium Musae based fully degradable film and preparation method thereof.
Background technology
In recent years, the cry of improving the ecological environment grows to even greater heights.China is as a packaging big country, and the usage quantity of plastic packing product is huge, and waste plastic is difficult to degraded, residual formation " white pollution " in the environment, the living environment of the serious threat mankind.Therefore, development environment friendly, nontoxic, free of contamination all biological degradation type film substitutes Traditional Packing film becomes inexorable trend.
PVA is a kind of broad-spectrum high molecular polymer, containing a large amount of hydroxyls in molecule, has powerful magnetism, have good barrier, strong adherence, snappiness, glossiness, smoothness, oil-proofness and organic solvent resistance between its adjacent molecule.PVA is easy to biological degradation, and hypotoxicity is non-stimulated, cheap and easy to get, is the very promising degradable plastics body material of one.But the water tolerance of PVA and mechanical property poor, limit the application of PVA base plastics film.
Summary of the invention
The object of this invention is to provide a kind of Pericarpium Musae based fully degradable film, good mechanical properties, has good water tolerance, cheap, environmental protection.
The present invention is achieved by the following technical solutions:
A kind of Pericarpium Musae based fully degradable film, it is obtained by the raw material of following weight parts:
Pericarpium Musae 20-30, W-Gum 20-30, corncob cellulose 3-5, citric acid 1-2, polyvinyl alcohol 20-30, glycerine 15-25,3-5, tetraethoxy 4-10, polyoxyethylene glycol 2-4, hydroxy silicon oil 2-4.
A preparation method for Pericarpium Musae based fully degradable film, it comprises the following steps:
(1) dry and pulverize under 70-80 DEG C of condition after Pericarpium Musae being cleaned, add water 80-90 DEG C by solid-liquid weight ratio 1:4-1:6 after mixing with W-Gum, corncob cellulose and citric acid and stir 3-5h, pH is adjusted to neutral rear filtration also completely dry, is ground to 500-800 order, obtains mixed powder;
(2) mixed powder obtained in (1) and polyoxyethylene glycol to be added jointly in the mixed solution of ethanol in proper amount/water/ammoniacal liquor and ultrasonic disperse 10-15min, obtain suspension, described ammonia concn is 25-26%, the weight ratio=1:2:5 of ammoniacal liquor, distilled water and ethanol in described ethanol/water/ammonia water mixture;
(3) ethanol/tetraethoxy mixed solution is slowly dripped in the suspension obtained in (2), in 50-60 DEG C of abundant stirring reaction 4-6h, also dry with absolute ethanol washing after filtration, obtain modified powder; Weight ratio=the 1:1 of ethanol and tetraethoxy in described ethanol/tetraethoxy mixed solution;
(4) modified powder obtained in (3) is mixed with polyvinyl alcohol, and hydroxy silicon oil, 0.5-1h is stirred prior to 70-80 DEG C, add glycerine 100-120 DEG C again and stir 0.5-1h, finally add twin screw extruder extruding pelletization, obtain film pellet;
(5) the film pellet blowing obtained in (4) is made film, to obtain final product.
Advantage of the present invention is:
Pericarpium Musae fiber-enriched and multiple nutritional components, be conducive to degradation property and the toughness of improving material, the present invention with Pericarpium Musae and W-Gum for base-material, by the composite modified base-material of silica sphere to increase the intensity of base-material, introduce polyoxyethylene glycol simultaneously and carry out the interface compatibility that surface modification improves base-material and polyvinyl alcohol, effectively improve the mechanical property of matrix material, and composite by with other compositions, the whole degrading film obtained is made to have good intensity, tensile property and water tolerance, erosion resistance is high, degradation property is good, cheap, environmental protection.
Embodiment
Non-limiting examples of the present invention is as follows:
A kind of Pericarpium Musae based fully degradable film, is prepared from by the component raw material of following weight (kg):
Pericarpium Musae 25, W-Gum 25, corncob cellulose 4, citric acid 1.5, polyvinyl alcohol 25, glycerine 20,4, tetraethoxy 8, polyoxyethylene glycol 3, hydroxy silicon oil 3.
The preparation method of Pericarpium Musae based fully degradable film comprises the following steps:
(1) Pericarpium Musae cleaned dry under rear 80 DEG C of conditions and pulverize, add 90 DEG C, water by solid-liquid weight ratio 1:4 after mixing with W-Gum, corncob cellulose and citric acid and stir 3h, pH is adjusted to neutral rear filtration also completely dry, is ground to 600 orders, obtains mixed powder;
(2) mixed powder obtained in (1) and polyoxyethylene glycol to be added jointly in the mixed solution of ethanol in proper amount/water/ammoniacal liquor and ultrasonic disperse 15min, obtain suspension, described ammonia concn is 26%, the weight ratio=1:2:5 of ammoniacal liquor, distilled water and ethanol in described ethanol/water/ammonia water mixture;
(3) ethanol/tetraethoxy mixed solution is slowly dripped in the suspension obtained in (2), in 60 DEG C of abundant stirring reaction 4h, also dry with absolute ethanol washing after filtration, obtain modified powder; Weight ratio=the 1:1 of ethanol and tetraethoxy in described ethanol/tetraethoxy mixed solution;
(4) modified powder obtained in (3) is mixed with polyvinyl alcohol, and hydroxy silicon oil, stir 0.5h prior to 80 DEG C, then add glycerine 120 DEG C stirring 0.5h, finally add twin screw extruder extruding pelletization, obtain film pellet;
(5) the film pellet blowing obtained in (4) is made film, to obtain final product.
Above-mentioned obtained film performance test result is as follows:
Tensile strength (MPa): 28.6;
Breaking tenacity (MPa): 39.4;
Wet tenacity (MPa): 22.7;
60d degradation rate: >=30%.
Claims (2)
1. a Pericarpium Musae based fully degradable film, is characterized in that, it is obtained by the raw material of following weight parts:
Pericarpium Musae 20-30, W-Gum 20-30, corncob cellulose 3-5, citric acid 1-2, polyvinyl alcohol 20-30, glycerine 15-25,3-5, tetraethoxy 4-10, polyoxyethylene glycol 2-4, hydroxy silicon oil 2-4.
2. the preparation method of a kind of Pericarpium Musae based fully degradable film according to claim 1, is characterized in that, comprise the following steps:
(1) dry and pulverize under 70-80 DEG C of condition after Pericarpium Musae being cleaned, add water 80-90 DEG C by solid-liquid weight ratio 1:4-1:6 after mixing with W-Gum, corncob cellulose and citric acid and stir 3-5h, pH is adjusted to neutral rear filtration also completely dry, is ground to 500-800 order, obtains mixed powder;
(2) mixed powder obtained in (1) and polyoxyethylene glycol to be added jointly in the mixed solution of ethanol in proper amount/water/ammoniacal liquor and ultrasonic disperse 10-15min, obtain suspension, described ammonia concn is 25-26%, the weight ratio=1:2:5 of ammoniacal liquor, distilled water and ethanol in described ethanol/water/ammonia water mixture;
(3) ethanol/tetraethoxy mixed solution is slowly dripped in the suspension obtained in (2), in 50-60 DEG C of abundant stirring reaction 4-6h, also dry with absolute ethanol washing after filtration, obtain modified powder; Weight ratio=the 1:1 of ethanol and tetraethoxy in described ethanol/tetraethoxy mixed solution;
(4) modified powder obtained in (3) is mixed with polyvinyl alcohol, and hydroxy silicon oil, 0.5-1h is stirred prior to 70-80 DEG C, add glycerine 100-120 DEG C again and stir 0.5-1h, finally add twin screw extruder extruding pelletization, obtain film pellet;
(5) the film pellet blowing obtained in (4) is made film, to obtain final product.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510201317.6A CN104892994A (en) | 2015-04-24 | 2015-04-24 | Banana skin-based fully-degradable film and preparation method thereof |
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| CN201510201317.6A CN104892994A (en) | 2015-04-24 | 2015-04-24 | Banana skin-based fully-degradable film and preparation method thereof |
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| CN201510201317.6A Pending CN104892994A (en) | 2015-04-24 | 2015-04-24 | Banana skin-based fully-degradable film and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113583461A (en) * | 2021-07-30 | 2021-11-02 | 中国热带农业科学院南亚热带作物研究所 | Preparation method of banana stem leaf and straw fiber composite material |
| CN114525037A (en) * | 2022-03-17 | 2022-05-24 | 晋江祥谦鞋材有限公司 | Rapidly-degradable environment-friendly plastic film and preparation process thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104656A (en) * | 1993-12-31 | 1995-07-05 | 中国科学院兰州化学物理研究所 | Biodegradable films and their production |
| CN102329435A (en) * | 2011-07-23 | 2012-01-25 | 佛山市衡龙科技有限公司 | Composite fully degradable agricultural mulching film material and preparation process thereof |
| CN103965519A (en) * | 2014-05-16 | 2014-08-06 | 齐鲁工业大学 | Preparation method of regenerated cellulose reinforced starch film |
-
2015
- 2015-04-24 CN CN201510201317.6A patent/CN104892994A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1104656A (en) * | 1993-12-31 | 1995-07-05 | 中国科学院兰州化学物理研究所 | Biodegradable films and their production |
| CN102329435A (en) * | 2011-07-23 | 2012-01-25 | 佛山市衡龙科技有限公司 | Composite fully degradable agricultural mulching film material and preparation process thereof |
| CN103965519A (en) * | 2014-05-16 | 2014-08-06 | 齐鲁工业大学 | Preparation method of regenerated cellulose reinforced starch film |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113583461A (en) * | 2021-07-30 | 2021-11-02 | 中国热带农业科学院南亚热带作物研究所 | Preparation method of banana stem leaf and straw fiber composite material |
| CN114525037A (en) * | 2022-03-17 | 2022-05-24 | 晋江祥谦鞋材有限公司 | Rapidly-degradable environment-friendly plastic film and preparation process thereof |
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Application publication date: 20150909 |
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