CN106700564A - Multifunctional biodegradable environment-friendly liquid mulching film - Google Patents
Multifunctional biodegradable environment-friendly liquid mulching film Download PDFInfo
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- CN106700564A CN106700564A CN201510489719.0A CN201510489719A CN106700564A CN 106700564 A CN106700564 A CN 106700564A CN 201510489719 A CN201510489719 A CN 201510489719A CN 106700564 A CN106700564 A CN 106700564A
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Abstract
The invention relates to a multifunctional biodegradable environment-friendly liquid mulching film prepared from protein polypeptide and oxidized saccharan. According to the invention, protein polypeptide and oxidized saccharan are subjected to a crosslinking reaction under the action of a cross-linking agent so as to prepare the colloidal liquid mulching film. The liquid mulching film is used for farmland irrigation in a sprinkling manner and can achieve same application effects (including water retention, heat preservation and humidification effects) as a solid mulching film; moreover, the liquid mulching film has degradability; so problems in recycling of waste solid protein produced leather making can be overcome, and the problem of white pollution caused by conventional liquid mulching film can be solved.
Description
Technical field
The present invention relates to native biopolymer Material Field, a kind of multi-functional biodegradable liquid environment-friendly mulch film is provided in particular in.
Background technology
In recent years, the life of people is introduced with various macromolecular materials, people pay high attention to for some renewable, easily biological-degradables, discarded object recoverable and environment-friendly Polymer material.Wherein, the research for preparing green, biodegradable composite using natural macromolecular material is protruded the most.Gelatin is protein obtained by collagen partial hydrolysis, and easy gelation, with good biocompatibility and biodegradable properties, is that a kind of important polymeric biomaterial for being formed is coupled to each other by carboxyl and amino by several amino acids.Gelatin abundance, is a kind of good natural resources, with low cost, is had a wide range of applications in fields such as medicine, food.But have that quality is crisp, elongation is low after pure gelatin drying, it is easily dry and cracked, meet easily corroded by bacterium in water easily swelling, wet environment and it is rotten the shortcomings of, therefore in actual applications, further to improve the performance of gelatin substrate, generally require to be modified it, while modified still have certain water absorbing properties.Gelatin modified method is more, such as cross-linking modified, graft modification, blending and compound.It is wherein chemical crosslinking modified to assign gelatin more stable structure, it is a kind of normal gelatin method of modifying.Aldehydes, carbohydrate, vegatable tannin class etc. can produce effectively cross-linking modified in chemical crosslinking modified, to gelatin.Research shows if preparing solid mulch film, in order to reach preferable film-formation result, intermingling material there is preferable crosslinking ability or must intervene third party's material play plasticization or strengthen crosslinked action, the material for so introducing certainly will run counter to the original intention of recycling, reduce biodegradability.If changing use pattern, mulch film is prepared as liquid-state mulch film, using spray pattern irrigated farmland, reaches solid mulch film identical application effect（Water conservation, insulation, humidification）Can make again with solid protein blending masking material need not be too big crosslinked action, selection with solid protein blending film forming material be only required to be natural material need not will be too big reactivity, there is degradability simultaneously, this is undoubtedly a kind of solution leather-making waste solid protein recycling problem, and current liquid ground film " white pollution " problem can be solved again.
The content of the invention
The technical problems to be solved by the invention are：A kind of multifunctional biodegradable environmental protection liquid-state mulch film is provided.
The technical solution adopted by the present invention is：
A kind of multifunctional biodegradable liquid environment-friendly mulch film, comprising following component：70~90 parts of multiamino compound；10~30 parts of natural polysaccharide of oxidation；1~5 part of crosslinking agent；300~500 parts of water.Preferred scheme is that the multiamino compound is constituted for the 8-10 peptides of PD, average molecular mass 500~1000, degraded of the polypeptide from animal protein or vegetable protein.
Preferred scheme is that the oxidation natural polysaccharide is the one kind in oxycellulose, oxidation shitosan, oxidised maize starch.
Preferred scheme is that the oxidation natural polysaccharide is prepared by following steps：The natural polysaccharide breast that mass fraction is 30 % is added in three-necked bottle, its pH value is adjusted to 3.0 with 10 % NaOH and hydrochloric acid；10 min of insulation are stirred at 60 DEG C, the hydrogen peroxide of natural polysaccharide mass fraction 30% is then slowly added dropwise, 3 h are reacted after completion of dropping；After question response terminates, 10 %NaHSO are added3Solution terminates oxidation reaction, suction filtration, washing（3-5 times）, the oxidation of polysaccharides of acquisition is in vacuum drying chamber（45℃）Dry 24 h.
Preferred scheme is that the crosslinking agent is the mixture of formaldehyde and sodium polyphosphate（The two amount ratio is 1: 0.5~2）.
Preferred scheme is that the multifunctional biodegradable environmental protection liquid-state mulch film is prepared by following steps：Appropriate multiamino compound and water is added to be configured to solution at 70 DEG C, add appropriate oxidation natural polysaccharide, being adjusted mixed liquor pH value needed for and be warming up to 90 DEG C and be stirred continuously with 10 % hydrochloric acid or 10 % sodium hydroxide solutions is completely dissolved oxidation natural polysaccharide, continues the min of insulated and stirred 120.Insulation adds appropriate crosslinking agent, and standing and defoaming is obtained multifunctional biodegradable environmental protection liquid-state mulch film.
Specific embodiment
It is described in conjunction with the embodiments specific embodiment of the invention.
Embodiment
1
1）It is prepared by a kind of multifunctional biodegradable environmental protection liquid-state mulch film.It is characterized in that：Raw material comes from two kinds of biomass of natural multiamino compound and Native Oxide polysaccharide.70 parts of polypeptide；30 parts of oxidised maize starch；1 part of crosslinking agent；300 parts of water.
2）The cornstarch that mass fraction is 30 % is added in three-necked bottle, its pH value is adjusted to 3.0,10 min of insulation are stirred at 60 DEG C, be then slowly added dropwise the hydrogen peroxide of starch quality fraction 30%, 3 h are reacted after completion of dropping；After question response terminates, 10 %NaHSO are added3Solution terminates oxidation reaction, suction filtration, washing（3-5 times）, the oxidised maize starch of acquisition is in vacuum drying chamber（45℃）Dry 24 h.
3）Add 70g polypeptides and 300g water to be configured to solution at 70 DEG C, add 30g oxidised maize starch, pH needed for regulation is 7.0.Being warming up to 90 DEG C and being stirred continuously is completely dissolved oxidised maize starch, continues the min of insulated and stirred 120.Insulation adds 1g crosslinking agents, and standing and defoaming is obtained multifunctional biodegradable environmental protection liquid-state mulch film.
Embodiment
2
1）It is prepared by a kind of multifunctional biodegradable environmental protection liquid-state mulch film.It is characterized in that：Raw material comes from two kinds of biomass of natural multiamino compound and Native Oxide polysaccharide.80 parts of polypeptide；20 parts of oxycellulose；3 parts of crosslinking agent；400 parts of water.
2）The cellulose that mass fraction is 30 % is added in three-necked bottle, its pH value is adjusted to 3.0,10 min of insulation are stirred at 60 DEG C, be then slowly added dropwise the hydrogen peroxide of cellulose mass fraction 30%, 3 h are reacted after completion of dropping；After question response terminates, 10 %NaHSO are added3Solution terminates oxidation reaction, suction filtration, washing（3-5 times）, the oxycellulose of acquisition is in vacuum drying chamber（45℃）Dry 24 h.
3）Add 80g albumen and 400g water to be configured to solution at 70 DEG C, add 20g oxycelluloses, pH needed for regulation is 7.0.Being warming up to 90 DEG C and being stirred continuously is completely dissolved oxycellulose, continues the min of insulated and stirred 120.Insulation adds 3g crosslinking agents, and standing and defoaming is obtained multifunctional biodegradable environmental protection liquid-state mulch film.
Embodiment
3
1）It is prepared by a kind of multifunctional biodegradable environmental protection liquid-state mulch film.It is characterized in that：Raw material comes from two kinds of biomass of natural multiamino compound and Native Oxide polysaccharide.90 parts of gelatin degradation polypeptide；10 parts of shitosan of oxidation；5 parts of crosslinking agent；500 parts of water.
2）The shitosan that mass fraction is 30 % is added in three-necked bottle, its pH value is adjusted to 3.0,10 min of insulation are stirred at 60 DEG C, be then slowly added dropwise the hydrogen peroxide of chitosan mass fraction 30%, 3 h are reacted after completion of dropping；After question response terminates, 10 %NaHSO are added3Solution terminates oxidation reaction, suction filtration, washing（3-5 times）, the oxidation shitosan of acquisition is in vacuum drying chamber（45℃）Dry 24 h.
90g collagens and 500g water is added to be configured to solution at 70 DEG C, 10g oxidation shitosans are added, pH needed for regulation is 7.0.Being warming up to 90 DEG C and being stirred continuously is completely dissolved oxidation shitosan, continues the min of insulated and stirred 120.Insulation adds 5g crosslinking agents, and standing and defoaming is obtained multifunctional biodegradable environmental protection liquid-state mulch film.
Claims (5)
1. the multifunctional biodegradable component that is included of environmental protection liquid-state mulch film and its weight portion are：70~90 parts of multiamino compound；10~30 parts of natural polysaccharide of oxidation；1~5 part of crosslinking agent；300~500 parts of water.
2. according to claim 1 multifunctional biodegradable environmental protection liquid-state mulch film, it is characterised in that the multiamino compound is to be made up of the 8-10 peptides of PD, average molecular mass 500~1000, degraded of the polypeptide from animal protein or vegetable protein.
3. it is the one kind in oxidation nanometer cellulose, oxidation nanometer shitosan, oxidation nanometer cornstarch that natural polysaccharide is aoxidized described in, is prepared by following steps：The natural polysaccharide breast that mass fraction is 30 % is added in three-necked bottle, its pH value is adjusted to 3.0 with 10 % NaOH and hydrochloric acid；10 min of insulation are stirred at 60 DEG C, the hydrogen peroxide of natural polysaccharide mass fraction 30% is then slowly added dropwise, 3 h are reacted after completion of dropping；After question response terminates, 10 %NaHSO are added3Solution terminates oxidation reaction, suction filtration, washing（3-5 times）, the oxidation natural polysaccharide of acquisition is in vacuum drying chamber（45℃）Dry 24 h.
4. according to claim 1 multifunctional biodegradable environmental protection liquid-state mulch film, it is characterised in that the crosslinking agent is the mixture of formaldehyde and sodium polyphosphate（The two amount ratio is 1: 0.5~2）.
5. the multifunctional biodegradable liquid-state mulch film according to any one of Claims 1 to 4, it is characterised in that the multifunctional biodegradable environmental protection liquid-state mulch film is prepared by following steps：Appropriate multiamino compound and water is added to be configured to solution at 70 DEG C, add appropriate oxidation natural polysaccharide, mixed liquor is adjusted to pH for 7.0 are worth with 10 % hydrochloric acid or 10 % sodium hydroxide solutions, being warming up to 90 DEG C and being stirred continuously is completely dissolved oxidation natural polysaccharide, continue the min of insulated and stirred 120, appropriate crosslinking agent is added, standing and defoaming is obtained multifunctional biodegradable environmental protection liquid-state mulch film.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107400264A (en) * | 2017-09-05 | 2017-11-28 | 慕善斌 | A kind of chitin biological liquid solid degradable mulch and preparation method thereof |
| CN109456512A (en) * | 2018-10-25 | 2019-03-12 | 慕善斌 | A kind of chitosan degradable biological liquid solid mulch and preparation method thereof |
| CN110563914A (en) * | 2019-09-06 | 2019-12-13 | 四川大学 | Preparation method of biomass high-capacity liquid base membrane |
| CN111154148A (en) * | 2020-02-20 | 2020-05-15 | 齐鲁工业大学 | Preparation method of waterborne polyurethane modified starch-based liquid mulching film |
| CN111820213A (en) * | 2020-07-28 | 2020-10-27 | 仲恺农业工程学院 | Bio-based sustained and controlled release pesticide liquid mulching film and preparation method and application thereof |
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| CN103865216A (en) * | 2012-12-14 | 2014-06-18 | 中国科学院沈阳应用生态研究所 | Multifunctional degradable liquid mulch film and preparation method and usage method thereof |
| CN104403135A (en) * | 2014-12-02 | 2015-03-11 | 天津北洋百川生物技术有限公司 | Liquid plastic mulch and preparation method thereof |
| CN104804355A (en) * | 2015-01-19 | 2015-07-29 | 四川师范大学 | Biodegradable agricultural liquid mulching film and preparation method thereof |
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2015
- 2015-08-12 CN CN201510489719.0A patent/CN106700564A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103865216A (en) * | 2012-12-14 | 2014-06-18 | 中国科学院沈阳应用生态研究所 | Multifunctional degradable liquid mulch film and preparation method and usage method thereof |
| CN104403135A (en) * | 2014-12-02 | 2015-03-11 | 天津北洋百川生物技术有限公司 | Liquid plastic mulch and preparation method thereof |
| CN104804355A (en) * | 2015-01-19 | 2015-07-29 | 四川师范大学 | Biodegradable agricultural liquid mulching film and preparation method thereof |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107400264A (en) * | 2017-09-05 | 2017-11-28 | 慕善斌 | A kind of chitin biological liquid solid degradable mulch and preparation method thereof |
| CN109456512A (en) * | 2018-10-25 | 2019-03-12 | 慕善斌 | A kind of chitosan degradable biological liquid solid mulch and preparation method thereof |
| CN110563914A (en) * | 2019-09-06 | 2019-12-13 | 四川大学 | Preparation method of biomass high-capacity liquid base membrane |
| CN110563914B (en) * | 2019-09-06 | 2021-11-26 | 四川大学 | Preparation method of biomass high-capacity liquid base membrane |
| CN111154148A (en) * | 2020-02-20 | 2020-05-15 | 齐鲁工业大学 | Preparation method of waterborne polyurethane modified starch-based liquid mulching film |
| CN111154148B (en) * | 2020-02-20 | 2022-04-05 | 齐鲁工业大学 | Preparation method of waterborne polyurethane modified starch-based liquid mulching film |
| CN111820213A (en) * | 2020-07-28 | 2020-10-27 | 仲恺农业工程学院 | Bio-based sustained and controlled release pesticide liquid mulching film and preparation method and application thereof |
| CN111820213B (en) * | 2020-07-28 | 2021-11-19 | 仲恺农业工程学院 | Bio-based sustained and controlled release pesticide liquid mulching film and preparation method and application thereof |
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