CN104927268A - Non-toxic polyvinyl alcohol environment-friendly full-degradable plastic film and manufacture method thereof - Google Patents
Non-toxic polyvinyl alcohol environment-friendly full-degradable plastic film and manufacture method thereof Download PDFInfo
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- CN104927268A CN104927268A CN201510293123.3A CN201510293123A CN104927268A CN 104927268 A CN104927268 A CN 104927268A CN 201510293123 A CN201510293123 A CN 201510293123A CN 104927268 A CN104927268 A CN 104927268A
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- polyvinyl alcohol
- wheat starch
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Abstract
The invention discloses a non-toxic polyvinyl alcohol environment-friendly full-degradable plastic film. Polyvinyl alcohol and wheat starch are used as main film forming matters, and compared with a traditional technology, the invention has the advantages that nano silica and wheat starch are modified through physical and chemical methods and cooperate with other effective ingredients mutually, so that hydroxyl groups in wheat starch and polyvinyl alcohol molecules are preferentially combined with a proper amount of nano silica surface hydroxyl groups to form hydrogen bonds, therefore, the degree of compatibility of wheat starch and polyvinyl alcohol is improved, partial hydroxyl groups in the wheat starch and polyvinyl alcohol are sealed, water resistance of the film is improved and the prepared full-degradable plastic film has the advantages of non-toxicity, hydrophobicity, fertilizer conservation and the like and can be used as an agricultural film.
Description
Technical field
The present invention relates to natural macromolecular material technical field, be specifically related to a kind of non-toxic polyethylene alcohol environmental protection complete degradable plastic film and preparation method thereof.
Background technology
Synthesized polymer material also causes serious pollution to environment while bringing great convenience to the life of people, in addition the continuous minimizing of the prospective oil of conventional plastic is manufactured, thus reproducible eco-friendly natural macromolecular material becomes the focus of research, Mierocrystalline cellulose, starch, protein etc. are current practical study and apply more natural polymer, so natural polymer subtype Wholly-degradable material becomes one of study hotspot of novel environmental friendly material.
Natural polymer because its raw material sources are wide, biodegradability is strong and film forming properties excellence is subject to extensive concern in food product pack and mulch film Application Areas.But, the feature due to natural polymer itself: its range of application of the drawbacks limit such as poor processability, fragility are very much not water-fast.Often adopt plasticising for addressing this problem, acid adjusted, crosslinked, fill or the single method of modifying such as blended, but this single method of modifying is limited, the Based Full-degradable Plastics Film function singleness prepared and cost is high cannot realize its suitability for industrialized production.Nanometer silicon dioxide material has the special functional effect of nanoparticle, improve separately natural macromolecule membrane and PVA (PVOH) FILM mechanical property and water resistance aspect with it and all have obvious effect, and few with the research report of nano-silicon dioxide modified natural polymer and polyvinyl alcohol compound film.
Summary of the invention
Object of the present invention is just to provide a kind of non-toxic polyethylene alcohol environmental protection complete degradable plastic film and preparation method thereof, to overcome the deficiencies in the prior art.
The object of the present invention is achieved like this:
A kind of non-toxic polyethylene alcohol environmental protection complete degradable plastic film, it is characterized in that, be made up of the raw material of following weight part: polyvinyl alcohol 90-95, polyglutamic acid 25-35, wheat starch 65-75, nano silicon 2-3, the coptis honey 6-9, glycerol 4.6-6.8, calcium oxide 2-5, bamboo-carbon fibre 6-9, zirconium carbide 0.1-0.3, perlite powder 1-3, suitable quantity of water.
The preparation method of described a kind of non-toxic polyethylene alcohol environmental protection complete degradable plastic film, is characterized in that comprising the following steps:
(1) wheat starch is added suitable quantity of water and stir into paste, heating pre-gelatinized process 10-20 minute, add calcium oxide, glycerol, constant temperature is uniformly mixed 2-3h, and suction filtration dries to obtain modified wheat starch naturally;
(2) by bamboo-carbon fibre vacuum-drying 2-4 hour at 105 DEG C, add coptis honey, perlite powder, nano silicon agitation grinding 2-3 hour, dry;
(3) polyvinyl alcohol is put into 80-90 DEG C of water-bath and be incubated 30-40 minute, add step (1), (2) material in 55-65 DEG C of water-bath 40-50 minute, then add other remaining components stirring 1-2 hour, put into twin screw extruder granulation;
(4) particle obtained for step (3) is poured in inflation film manufacturing machine at 140-170 DEG C, carry out blown film.
The present invention has following beneficial effect: the present invention adopts polyvinyl alcohol and wheat starch to be main film forming substance, compare the present invention to carry out modification by physico-chemical process to nano silicon and wheat starch coordinate other effective constituents to cooperatively interact simultaneously with traditional technology, hydroxyl in wheat starch and polyvinyl alcohol molecule is made to understand preferential and proper amount of nano silica sphere hydroxy combining formation hydrogen bond, increase the compatibility of wheat starch and polyvinyl alcohol, close the part of hydroxyl in wheat starch and polyvinyl alcohol, improve film water tolerance, obtained Based Full-degradable Plastics Film has nontoxic, hydrophobic, the advantages such as fertilizer conservation, can be used for preparing Farm mulch.
Embodiment
Described a kind of non-toxic polyethylene alcohol environmental protection complete degradable plastic film, it is characterized in that, be made up of the raw material of following weight part: polyvinyl alcohol 92, polyglutamic acid 28, wheat starch 70, nano silicon 3, coptis honey 6, glycerol 4.9, calcium oxide 3, bamboo-carbon fibre 8, zirconium carbide 0.2, perlite powder 1, suitable quantity of water.
Making method comprises the following steps:
(1) wheat starch is added suitable quantity of water and stir into paste, heating pre-gelatinized process 10-20 minute, add calcium oxide, glycerol, constant temperature is uniformly mixed 2-3h, and suction filtration dries to obtain modified wheat starch naturally;
(2) by bamboo-carbon fibre vacuum-drying 2-4 hour at 105 DEG C, add coptis honey, perlite powder, nano silicon agitation grinding 2-3 hour, dry;
(3) polyvinyl alcohol is put into 80-90 DEG C of water-bath and be incubated 30-40 minute, add step (1), (2) material in 55-65 DEG C of water-bath 40-50 minute, then add other remaining components stirring 1-2 hour, put into twin screw extruder granulation;
(4) particle obtained for step (3) is poured in inflation film manufacturing machine at 140-170 DEG C, carry out blown film.
The technical parameter index of the Based Full-degradable Plastics Film using the present invention to produce is as follows: tensile strength is 9.66MPa, and transmittance is 26.89%, and water-intake rate is 46.87%.
Claims (2)
1. a non-toxic polyethylene alcohol environmental protection complete degradable plastic film, it is characterized in that, be made up of the raw material of following weight part: polyvinyl alcohol 90-95, polyglutamic acid 25-35, wheat starch 65-75, nano silicon 2-3, the coptis honey 6-9, glycerol 4.6-6.8, calcium oxide 2-5, bamboo-carbon fibre 6-9, zirconium carbide 0.1-0.3, perlite powder 1-3, suitable quantity of water.
2. the making method of a kind of non-toxic polyethylene alcohol environmental protection complete degradable plastic film according to claim 1, is characterized in that comprising the following steps:
(1) wheat starch is added suitable quantity of water and stir into paste, heating pre-gelatinized process 10-20 minute, add calcium oxide, glycerol, constant temperature is uniformly mixed 2-3h, and suction filtration dries to obtain modified wheat starch naturally;
(2) by bamboo-carbon fibre vacuum-drying 2-4 hour at 105 DEG C, add coptis honey, perlite powder, nano silicon agitation grinding 2-3 hour, dry;
(3) polyvinyl alcohol is put into 80-90 DEG C of water-bath and be incubated 30-40 minute, add step (1), (2) material in 55-65 DEG C of water-bath 40-50 minute, then add other remaining components stirring 1-2 hour, put into twin screw extruder granulation;
(4) particle obtained for step (3) is poured in inflation film manufacturing machine at 140-170 DEG C, carry out blown film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510293123.3A CN104927268A (en) | 2015-06-02 | 2015-06-02 | Non-toxic polyvinyl alcohol environment-friendly full-degradable plastic film and manufacture method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510293123.3A CN104927268A (en) | 2015-06-02 | 2015-06-02 | Non-toxic polyvinyl alcohol environment-friendly full-degradable plastic film and manufacture method thereof |
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| CN104927268A true CN104927268A (en) | 2015-09-23 |
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| CN201510293123.3A Pending CN104927268A (en) | 2015-06-02 | 2015-06-02 | Non-toxic polyvinyl alcohol environment-friendly full-degradable plastic film and manufacture method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108864490A (en) * | 2018-06-14 | 2018-11-23 | 安徽精良同硕塑膜科技股份有限公司 | A kind of high hydrophobicity degradable mulch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031026A (en) * | 2011-10-08 | 2013-04-10 | 常熟市屹浩食品包装材料有限公司 | Polyvinyl alcohol radical composite coating fresh keeping packaging material nano TiO2 functional modification method |
| CN103289131A (en) * | 2013-05-22 | 2013-09-11 | 南京财经大学 | Preparation method for starch-polyvinyl alcohol biologically-cross-linked nano-composite plastic film |
| CN103304851A (en) * | 2013-07-07 | 2013-09-18 | 华东理工大学 | High-starch-content waterproof totally-decomposed composite material and preparation method thereof |
| CN104109263A (en) * | 2014-06-30 | 2014-10-22 | 安徽巢湖南方膜业有限责任公司 | Starch-polyvinyl alcohol dual-degradationplastic film |
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2015
- 2015-06-02 CN CN201510293123.3A patent/CN104927268A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103031026A (en) * | 2011-10-08 | 2013-04-10 | 常熟市屹浩食品包装材料有限公司 | Polyvinyl alcohol radical composite coating fresh keeping packaging material nano TiO2 functional modification method |
| CN103289131A (en) * | 2013-05-22 | 2013-09-11 | 南京财经大学 | Preparation method for starch-polyvinyl alcohol biologically-cross-linked nano-composite plastic film |
| CN103304851A (en) * | 2013-07-07 | 2013-09-18 | 华东理工大学 | High-starch-content waterproof totally-decomposed composite material and preparation method thereof |
| CN104109263A (en) * | 2014-06-30 | 2014-10-22 | 安徽巢湖南方膜业有限责任公司 | Starch-polyvinyl alcohol dual-degradationplastic film |
Non-Patent Citations (1)
| Title |
|---|
| 孟祥胜，王鹏，毛桂洁: ""聚乙烯醇纳米二氧化硅复合薄膜的制备及性能"", 《高分子材料科学与工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108864490A (en) * | 2018-06-14 | 2018-11-23 | 安徽精良同硕塑膜科技股份有限公司 | A kind of high hydrophobicity degradable mulch |
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Application publication date: 20150923 |
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