CN107987847A - A kind of organic covering composition in environment-friendly type gardens - Google Patents
A kind of organic covering composition in environment-friendly type gardens Download PDFInfo
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Abstract
The present invention provides a kind of organic covering composition in environment-friendly type gardens, calculates by weight, including：30 50 parts of garden wastes, 1 15 parts of cellular activated carbons, 5 20 parts of zeolite granulars, 2 10 parts of binding agents, 3 15 parts of modification of chitosan, 10 30 parts of host materials, 10 30 parts of water；Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, and the preparing raw material of the host material includes PLGA, ferroso-ferric oxide, polyvinyl alcohol, agarose, cellulase, farnesol；The preparing raw material of the binding agent includes ethylene-vinyl acetate copolymer, polyvinyl alcohol, nonionic surfactant, anion surfactant, anticorrosion and bactericidal agent, water.
Description
Technical field
The present invention relates to Chinese garden planting technical field, in particular it relates to a kind of organic covering group in environment-friendly type gardens
Compound.
Background technology
Due to interference and influence of the mankind's activity on natural environment in recent decades world wide, unusual weather conditions, water are caused
Soil be lost in, water resources shortage by be the long-standing problem mankind living environment problem.Nearly ten years, drought in the north and flooding in the south situation in China's adds
Play, Catastrophe climate take place frequently, and all have certain association with the deterioration of natural environment.At the same time country is in progressively powerful, urbanization
City degree is higher and higher, and people but have living environment the requirement of higher, but large area shrub, lawn water consumption are tight in city trees and shrubs
Weight, therefore " saving Landscape " is imperative.
The increased surface covering used in urban landscaping is broadly divided into two kinds:One kind is inorganic covers, in addition one
Kind claims organic mat.Inorganic covers are mainly haydite, plastic sheet, rubble, cobblestone, non-woven fabrics etc., its Master Cost is not
It is low, because itself is not perishable, commonly using that soil aeration can be made to be deteriorated, influence arboreal growth.Organic ground surface mulch
Species is just very more, and any part of plant can be used as the production of covering, as bark, branch, pine needle, leaf,
Tree root etc., but slightly to handle.Organic mat is more satisfactory soil protection layer, is covered in upper soll layer, can adjust soil
The temperature of earth.Both burning sun can have been blocked to be exposed to the sun, avoided the soil moisture from persistently raising, and insulating layer can be formed in cold weather,
Soil heat is preserved, reduces injury of the extreme soil temperature to root system.Organic mat also has the ability for keeping soil moisture, can be with
Soil moisture is effectively kept, reduces the amplitude of soil moisture change, so as to play the role of water-saving, water conservation.
Organic mat (cover degree) is to administer exposed ground, improves landscape effect and increases soil fertility, in Europe
U.S. is fashionable for many years, but because organic mat is the product after waste wood crushing, causes to scrape because wind is big in some areas
The result such as winged.
Therefore, the present invention provides a kind of organic covering composition in environment-friendly type gardens, it can effectively keep soil moisture, adjusts
Temperature, improves soil physico-chemical property, strengthens soil microbial activity, adjusts the soil water, fertilizer, air and heat situation, increases soil fertility
While, also overcome organic mat airborne dust or reentrainment of dust, reach the effect beautified the environment.
The content of the invention
In view of the above-mentioned problems, first aspect present invention provides a kind of organic covering composition in environment-friendly type gardens, by weight
Calculate, including：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, the system of the host material
Standby raw material includes PLGA, ferroso-ferric oxide, polyvinyl alcohol, agarose, cellulase, farnesol；The preparation of the binding agent is former
Material includes ethylene-vinyl acetate copolymer, polyvinyl alcohol, nonionic surfactant, anion surfactant, antisepsis and sterilization
Agent, water.
In one embodiment, calculate by weight, including：
In one embodiment, the preparing raw material of the bi-quaternary ammonium salt containing imidazolyl heterocycle includes 1- ethoxy -2- first
Base -5- nitroimidazoles, epoxychloropropane, Dodecyl Dimethyl Amine.
In one embodiment, 1- ethoxys -2- methyl-5-nitros described in the bi-quaternary ammonium salt containing imidazolyl heterocycle
The weight ratio of imidazoles and the epoxychloropropane, the Dodecyl Dimethyl Amine is 1：(1.2-2)：(1.5-2.5).
In one embodiment, the weight average molecular weight of the modification of chitosan is 1000-5000.
In one embodiment, calculate by weight, the preparing raw material of the binding agent is total to including ethene-vinyl acetate
30-35 parts of polymers, 0.5-2 parts of polyvinyl alcohol, 0.5-1 parts of nonionic surfactant, anion surfactant 0.2-0.5
Part, 0.1-0.5 parts of anticorrosion and bactericidal agent, 50-60 parts of water.
In one embodiment, the nonionic surfactant includes OP series of surfactants, NP series surface
One or more in activating agent, Tween series of surfactants.
In one embodiment, the anion surfactant includes dodecyl phenenyl sulfate, detergent alkylate
Sodium sulfonate, cetyl phenyl-hydrogen-sulfate sodium, the one or more in laurate sulfuric ester.
In one embodiment, it is a kind of or more to include leaf, bark, sawdust, pine needle, walnut shell for the garden waste
Kind.
Another aspect of the present invention provides a kind of preparation method of the organic covering composition in environment-friendly type gardens, including following step
Suddenly：
(1) garden waste is collected and dries into dry material, dry material is processed into granule materials through crushing and processing；
(2) granule materials, cellular activated carbon, zeolite granular, bonding in step (1) are added by weight into agitating device
Agent, modification of chitosan, host material, stir 3-5h, obtain the organic covering composition in environment-friendly type gardens.
The above-mentioned of the application and other features, aspect and advantage is more readily understood with reference to described further below.
Embodiment
Participate in the election of the detailed description of the invention below for being preferable to carry out method and including embodiment this hair can be more easily understood
Bright content.Unless otherwise defined, all technologies used herein and scientific terminology have common with fields of the present invention
The normally understood identical implication of technical staff.When there is a conflict, the definition in this specification shall prevail.
As used herein term " by ... prepare " it is synonymous with "comprising".Term "comprising" used herein, " comprising ",
" having ", " containing " or its any other deformation, it is intended that cover including for non-exclusionism.For example, the combination comprising listed elements
Thing, step, method, product or device are not necessarily limited to those key elements, but can include not expressly listed other key elements or
Such a composition, step, method, product or the intrinsic key element of device.
Conjunction " Consists of " excludes any key element do not pointed out, step or component.If be used in claim, this
Phrase will make claim be closed, it is not included the material in addition to the material of those descriptions, but relative normal
Except rule impurity.When being rather than immediately following in the clause that phrase " Consists of " appears in claim main body after theme,
It is only limited to the key element described in the clause；Other key elements are not excluded outside the claim as a whole.
Equivalent, concentration or other values or parameter are excellent with scope, preferred scope or a series of upper limit preferred values and lower limit
During the Range Representation that choosing value limits, this, which is appreciated that, specifically discloses by any range limit or preferred value and any scope
All scopes that any pairing of lower limit or preferred value is formed, regardless of whether the scope separately discloses.For example, when open
During scope " 1 to 5 ", described scope should be interpreted as including scope " 1 to 4 ", " 1 to 3 ", " 1 to 2 ", " 1 to 2 and 4 to
5 ", " 1 to 3 and 5 " etc..When number range is described herein, unless otherwise stated, otherwise the scope is intended to include its end
Value and all integers and fraction within the range.
Singulative includes plural number and object is discussed, unless the context clearly dictates otherwise." optional " or it is " any
It is a kind of " refer to that the item that describes thereafter or event may or may not occur, and the description include situation that event occurs and
The situation that event does not occur.
Approximate term in specification and claims is used for modifying quantity, represents specific the present invention is not limited to this
Quantity, further includes the modified part of the acceptable change without cause related basic function close to the quantity.Phase
Answer, modify a numerical value with " about ", " about " etc., mean that the invention is not restricted to the exact numerical.It is approximate in some examples
Term likely corresponds to the precision of the instrument of measured value.In present specification and claims, scope limits can be with
Combine and/or exchange, these scopes include all subranges contained therebetween if not stated otherwise.
In addition, indefinite article " one kind " before key element of the present invention or component and "one" quantitative requirement to key element or component
(i.e. occurrence number) unrestriction.Therefore "one" or " one kind " should be read as including one or at least one, and odd number
The key element or component of form also include plural form, unless the obvious purport of the quantity refers to singulative.
" polymer " means by the polymerizable compound prepared by the monomer that polymerize identical or different type.Generic term
" polymer " includes term " homopolymer ", " copolymer ", " terpolymer " and " copolymer ".
" copolymer " means the polymer prepared by polymerizeing at least two different monomers.Generic term " copolymer " includes
(its is general with term " terpolymer " for term " copolymer " (its generally to refer to the polymer prepared by two kinds of different monomers)
To refer to the polymer prepared by three kinds of different monomers).It is also included by polymerizeing more kinds of monomers the polymer that manufactures.
" blend " means that two or more polymer mixes the polymer to be formed by physics or chemical method jointly.
First aspect present invention provides a kind of organic covering composition in environment-friendly type gardens, calculates by weight, including：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, the system of the host material
Standby raw material includes PLGA, ferroso-ferric oxide, polyvinyl alcohol, agarose, cellulase, farnesol；The preparation of the binding agent is former
Material includes ethylene-vinyl acetate copolymer, polyvinyl alcohol, nonionic surfactant, anion surfactant, antisepsis and sterilization
Agent, water.
In one embodiment, calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Preferably, calculate by weight, the organic covering composition in environment-friendly type gardens includes：
The preparation method of the host material comprises the following steps：
(1) PLGA/ ferroso-ferric oxide mixed solutions are prepared：PLGA, tetrahydrofuran are added into reactor, stirring, has been treated
After fully dissolved, ferroso-ferric oxide is added, stirs 0.5h；The PLGA and the tetrahydrofuran, the weight of the ferroso-ferric oxide
Than for 1：5：0.3；
(2) the PLGA/ ferroso-ferric oxides mixing obtained into PVA/ tetrahydrofuran mixed solution and dripping steps (1) is molten
Liquid, after being added dropwise, after stirring 1h, 50 DEG C are removed under reduced pressure tetrahydrofuran, obtain the PLGA nanoparticles of load ferroso-ferric oxide；
The weight ratio of the PVA and the ferroso-ferric oxide is 1：0.12；PVA and institute described in the PVA/ tetrahydrofurans mixed solution
The weight ratio for stating tetrahydrofuran is 1：3；
(3) the PLGA nanoparticles for the load ferroso-ferric oxide that step (2) obtains are added into reactor, agarose, go
Ionized water, farnesol, stir 0.5h, are warming up to 80 DEG C, stir 2h, and standing is cooled to 30 DEG C, adds cellulase, stirs 3h,
Obtain the mixed solution of cellulose enzyme to be fixed；The PLGA nanoparticles and the agarose of the load ferroso-ferric oxide,
The deionized water, the farnesol, the weight ratio of the cellulase are 1：0.024：20：0.002：0.05；
(4) calcium chloride water is added into reactor, stirs, cellulose enzyme to be fixed in step (3) is slowly added dropwise
Mixed solution, after being added dropwise, be stirred at room temperature 8h, soak 20h, spheric granules is filtered and is taken out, deionized water rinsing, to obtain the final product
The host material, the concentration of the calcium chloride water is 0.02g/ml, the calcium chloride water and to be fixedization
The weight ratio of the mixed solution of cellulase is 0.5：1.
Heretofore described PVA is polyvinyl alcohol；The PLGA is Poly(D,L-lactide-co-glycolide.
Cellulase is in itself there are limitation, as stability is poor, is not easy to be stored in, the present invention pass through host material fix it is fine
The plain enzyme of dimension, improves the stability and catalytic activity of cellulase, the catalysis of cellulase is further improved by adding farnesol
Activity, the host material with magnetic responsiveness in addition provided in the present invention, promotes load of the host material to cellulase
Amount, while the stability and catalytic activity of cellulase are also promoted, and then promote the decomposition of garden waste, increase soil is supported
Point.In addition, providing the nutriment of abundance for microorganism in decomposable process, the activity of edaphon is stimulated, raw material can be accelerated
The decomposition and release of the nutrients such as middle organic substance.
In a kind of embodiment, the preparing raw material of the bi-quaternary ammonium salt containing imidazolyl heterocycle include 1- ethoxy -2- methyl -
5- nitroimidazoles (CAS:443-48-1), epoxychloropropane, Dodecyl Dimethyl Amine.
In one embodiment, 1- ethoxys -2- methyl-5-nitros described in the bi-quaternary ammonium salt containing imidazolyl heterocycle
The weight ratio of imidazoles and the epoxychloropropane, the Dodecyl Dimethyl Amine is 1：(1.2-2)：(1.5-2.5)；It is preferred that
Ground, metronidazole described in the bi-quaternary ammonium salt containing imidazolyl heterocycle and the epoxychloropropane,
The weight ratio of the Dodecyl Dimethyl Amine is 1：1.4：1.8.
In one embodiment, the weight average molecular weight of the modification of chitosan is 1000-5000；Preferably, it is described to change
The weight average molecular weight of property chitosan is 2000-3000.
Weight average molecular weight is to be based on gel permeation chromatography (hreinafter referred to as " GPC ".) measure and carry out polystyrene and change
Value after calculation.The determination condition of GPC uses the condition test of this area routine, for example, can test to obtain by the way of following.
Column：Following columns are connected in series and are used.
" TSKgelG5000 " (7.8mmI.D. × 30cm) × 1 piece
" TSKgelG4000 " (7.8mmI.D. × 30cm) × 1 piece
" TSKgelG3000 " (7.8mmI.D. × 30cm) × 1 piece
" TSKgelG2000 " (7.8mmI.D. × 30cm) × 1 piece
Detector：RI (differential refractometer)；Column temperature：40℃；Eluent：Tetrahydrofuran；Flow velocity：1.0mL/ minute；Note
Enter amount：100 μ L (tetrahydrofuran solution of sample solution concentration 4mg/mL)；Standard specimen：Using following monodisperse polystyrenes, make
Standard curve.
The preparation method of the modification of chitosan comprises the following steps：
(1) bi-quaternary ammonium salt containing imidazolyl heterocycle：Epoxychloropropane is added to reactor, 75 DEG C is warming up to, is slowly added dropwise ten
Dialkyl dimethyl tertiary amine, after being added dropwise, stirs 0.5h, is cooled to 55 DEG C, add acetonitrile, be then added three times 1- hydroxyl second
Base -2- 5-nitro imidazoles, insulation reaction 8h, is cooled to room temperature, is concentrated under reduced pressure, and obtains the crude product of bi-quaternary ammonium salt containing imidazolyl heterocycle,
Acetone stirring 0.5h is added, is concentrated under reduced pressure, obtains bi-quaternary ammonium salt containing imidazolyl heterocycle；Described in the bi-quaternary ammonium salt containing imidazolyl heterocycle
The weight ratio of metronidazole and the epoxychloropropane, the Dodecyl Dimethyl Amine is 1：
1.4：1.8；The weight ratio of the epoxychloropropane and the acetonitrile, the acetone is 1：6：4；
(2) modification of chitosan：Chitosan is added into reactor, the acetum that mass fraction is 2%, stirred described in 1h
The weight ratio for the acetum that chitosan is 2% with the mass fraction is 1：20, mass fraction is then slowly added dropwise as 10%
Sodium hydroxide solution, adjust pH to 9, continue stir 2h, filtering, the chitosan to be alkalized, add isopropanol, be warming up to 60
DEG C, insulation reaction 4h, is slowly added dropwise bi-quaternary ammonium salt/aqueous solution, after being added dropwise, is warming up to 80 DEG C, insulation reaction 10h, cooling
To room temperature, acetone, filtering are added, and is eluted 3 times with acetone, 60 DEG C are dried under reduced pressure 10h, obtain modification of chitosan；Double seasons
The weight ratio of bi-quaternary ammonium salt described in ammonium salt/aqueous solution and the water is 1：4, the chitosan of the alkalization and the isopropanol
Weight ratio is 1：10, the weight ratio of the chitosan and the bi-quaternary ammonium salt is 1：0.11.
Chitosan quaternary ammonium salt has good physical and chemical performance, biocompatibility and biodegradability etc., space
The introducing for the quaternary ammonium salt group that steric hindrance is big, hydratability is strong, alleviates the defects of chitosan crystallinity is higher, brittleness is larger, and
Ion characteristic is improved, greatly increases its electropositive and cationic strength；Chitosan oligosaccharide is a kind of plant immune class material, to planting
The disease-resistant of thing, low-temperature resistance, volume increase, raising quality etc. are effective.
With negatively charged bacterium flocculation can occur for quaternary ammonium radical ion, upset the normal activities of bacterium, hinder
The duplication and breeding of DNA of bacteria, so as to reach antibacterial and biocidal efficacies.
By bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle in the present invention, do not changing 1- ethoxy -2- methyl -5-
With regard to its water-soluble and permeability can be improved on the basis of nitroimidazole structure, and nitrogen heterocyclic ring group is introduced in bi-quaternary ammonium salt
After its sustained release performance can be made to make moderate progress, so except water solubility, the table that can change metronidazole
Outside face activity and sterilization idiocratic, Horticultural crops anti-adversity ability is further improved, strengthens Horticultural crops physiological activity, stimulates gardens to make
Thing growth and development.
In one embodiment, calculate by weight, the preparing raw material of the binding agent is total to including ethene-vinyl acetate
30-35 parts of polymers, 0.5-2 parts of polyvinyl alcohol, 0.5-1 parts of nonionic surfactant, anion surfactant 0.2-0.5
Part, 0.1-0.5 parts of anticorrosion and bactericidal agent, 50-60 parts of water；Preferably, the preparing raw material of the binding agent includes ethene-vinyl acetate
31 parts of copolymer, 0.8 part of polyvinyl alcohol, 0.5 part of nonionic surfactant, 0.3 part of anion surfactant, antisepsis and sterilization
0.2 part of agent, 50 parts of water；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolinone (CAS of 4,5- bis-：64359-81-
5)。
The preparation method of the binding agent comprises the following steps：
Polyethylene alcohol and water is added by weight into reactor, stirring is warming up to 50 DEG C, adds non-ionic surface active
Agent, ionic surface active agent, ethylene-vinyl acetate copolymer stirring 3h, are cooled to room temperature, add anticorrosion and bactericidal agent, stir 1h,
Obtain the binding agent.
In one embodiment, the nonionic surfactant includes OP series of surfactants, NP series surface
One or more in activating agent, Tween series of surfactants；Preferably, the nonionic surfactant is OP series
Surfactant, is preferably OP-10 in the OP series of surfactants, and the surfactant is purchased from Guangzhou auspicious sign chemical industry
The OP-10 of company.
In one embodiment, the anion surfactant includes dodecyl phenenyl sulfate, detergent alkylate
Sodium sulfonate, cetyl phenyl-hydrogen-sulfate sodium, the one or more in laurate sulfuric ester；Preferably, the anion surface active
Agent is neopelex.
In one embodiment, it is a kind of or more to include leaf, bark, sawdust, pine needle, walnut shell for the garden waste
Kind.
Another aspect of the present invention provides a kind of preparation method of the organic covering composition in environment-friendly type gardens, including following step
Suddenly：
(1) garden waste is collected and dries into dry material, dry material is processed into granule materials through crushing and processing；
(2) granule materials, cellular activated carbon, zeolite granular, bonding in step (1) are added by weight into agitating device
Agent, modification of chitosan, host material, stir 3-5h, obtain the organic covering composition in environment-friendly type gardens.
Zeolite and cellular activated carbon, can be with conditioned soils for porous material and with the socket bore on molecular level in the present invention
Earth, increase soil aggregate structure, improve water capacity and aeration, promote the activity of soil beneficial microorganism, reduction saline and alkaline
Salt content in soil；Fertilizer efficiency can be improved, crop yield is improved, improves crop quality, strengthen Horticultural crops anti-adversity ability,
Strengthen Horticultural crops physiological activity, stimulate Horticultural crops growth and development.
Discarded in the present invention by modification of chitosan, host material, cellular activated carbon, zeolite granular, binding agent and gardens
Thing acts synergistically, and the organic covering composition in environment-friendly type gardens made effectively keeps soil moisture, adjusts temperature, improves soil physical chemistry
Property, strengthens soil microbial activity, adjusts the soil water, fertilizer, air and heat situation, while increasing soil fertility, also overcomes organic
Covering airborne dust or reentrainment of dust, reach the effect beautified the environment.
The covering application of the heretofore described organic covering composition in environment-friendly type gardens, includes the following steps：By the ring
The organic covering composition in guarantor's type gardens is uniformly layed in around butt, is retained between organic mat edge and butt
6cm distances, cladding thickness 3-6cm.
The present invention is specifically described below by embodiment.It is necessarily pointed out that following embodiments are only used
In the invention will be further described, it is impossible to be interpreted as limiting the scope of the invention, professional and technical personnel in the field
Some the nonessential modifications and adaptations made according to the content of the invention described above, still fall within protection scope of the present invention.
In addition, if without other explanations, it is raw materials used to be all commercially available, it is purchased from traditional Chinese medicines chemical reagent.
Embodiment 1
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, described containing imidazolyl heterocycle
The preparing raw material of bi-quaternary ammonium salt includes metronidazole, epoxychloropropane, dodecyl dimethyl uncle
Amine, metronidazole described in the bi-quaternary ammonium salt containing imidazolyl heterocycle and the epoxychloropropane,
The weight ratio of the Dodecyl Dimethyl Amine is 1：1.4：1.8；The preparing raw material of the host material includes PLGA, four oxygen
Change three-iron, polyvinyl alcohol, agarose, cellulase, farnesol；Calculate by weight, the preparing raw material of the binding agent includes
31 parts of ethylene-vinyl acetate copolymer, 0.8 part of polyvinyl alcohol, 0.5 part of nonionic surfactant, anion surfactant
0.3 part, 0.2 part of anticorrosion and bactericidal agent, 50 parts of water；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolinone of 4,5- bis-；
The nonionic surfactant is OP-10, and the anion surfactant is neopelex, and the gardens are given up
Gurry includes leaf, bark, sawdust, pine needle, walnut shell；
The preparation method of the organic covering composition in environment-friendly type gardens, comprises the following steps：
(1) garden waste is collected and dries into dry material, dry material is processed into granule materials through crushing and processing；
(2) granule materials, cellular activated carbon, zeolite granular, bonding in step (1) are added by weight into agitating device
Agent, modification of chitosan, host material, stir 4h, obtain the organic covering composition in environment-friendly type gardens.
The preparation method of the modification of chitosan comprises the following steps：
(1) bi-quaternary ammonium salt containing imidazolyl heterocycle：Epoxychloropropane is added to reactor, 75 DEG C is warming up to, is slowly added dropwise ten
Dialkyl dimethyl tertiary amine, after being added dropwise, stirs 0.5h, is cooled to 55 DEG C, add acetonitrile, be then added three times 1- hydroxyl second
Base -2- 5-nitro imidazoles, insulation reaction 8h, is cooled to room temperature, is concentrated under reduced pressure, and obtains the crude product of bi-quaternary ammonium salt containing imidazolyl heterocycle,
Acetone stirring 0.5h is added, is concentrated under reduced pressure, obtains bi-quaternary ammonium salt containing imidazolyl heterocycle；Described in the bi-quaternary ammonium salt containing imidazolyl heterocycle
The weight ratio of metronidazole and the epoxychloropropane, the Dodecyl Dimethyl Amine is 1：
1.4：1.8；The weight ratio of the epoxychloropropane and the acetonitrile, the acetone is 1：6：4；
(2) modification of chitosan：Chitosan is added into reactor, the acetum that mass fraction is 2%, stirred described in 1h
The weight ratio for the acetum that chitosan is 2% with the mass fraction is 1：20, mass fraction is then slowly added dropwise as 10%
Sodium hydroxide solution, adjust pH to 9, continue stir 2h, filtering, the chitosan to be alkalized, add isopropanol, be warming up to 60
DEG C, insulation reaction 4h, is slowly added dropwise bi-quaternary ammonium salt/aqueous solution, after being added dropwise, is warming up to 80 DEG C, insulation reaction 10h, cooling
To room temperature, acetone, filtering are added, and is eluted 3 times with acetone, 60 DEG C are dried under reduced pressure 10h, obtain modification of chitosan；Double seasons
The weight ratio of bi-quaternary ammonium salt described in ammonium salt/aqueous solution and the water is 1：4, the chitosan of the alkalization and the isopropanol
Weight ratio is 1：10, the weight ratio of the chitosan and the bi-quaternary ammonium salt is 1：0.11.
The preparation method of the host material comprises the following steps：
(1) PLGA/ ferroso-ferric oxide mixed solutions are prepared：PLGA, tetrahydrofuran are added into reactor, stirring, has been treated
After fully dissolved, ferroso-ferric oxide is added, stirs 0.5h；The PLGA and the tetrahydrofuran, the weight of the ferroso-ferric oxide
Than for 1：5：0.3；
(2) the PLGA/ ferroso-ferric oxides mixing obtained into PVA/ tetrahydrofuran mixed solution and dripping steps (1) is molten
Liquid, after being added dropwise, after stirring 1h, 50 DEG C are removed under reduced pressure tetrahydrofuran, obtain the PLGA nanoparticles of load ferroso-ferric oxide；
The weight ratio of the PVA and the ferroso-ferric oxide is 1：0.12；PVA and institute described in the PVA/ tetrahydrofurans mixed solution
The weight ratio for stating tetrahydrofuran is 1：3；
(3) the PLGA nanoparticles for the load ferroso-ferric oxide that step (2) obtains are added into reactor, agarose, go
Ionized water, farnesol, stir 0.5h, are warming up to 80 DEG C, stir 2h, and standing is cooled to 30 DEG C, adds cellulase, stirs 3h,
Obtain the mixed solution of cellulose enzyme to be fixed；The PLGA nanoparticles and the agarose of the load ferroso-ferric oxide,
The deionized water, the farnesol, the weight ratio of the cellulase are 1：0.024：20：0.002：0.05；
(4) calcium chloride water is added into reactor, stirs, cellulose enzyme to be fixed in step (3) is slowly added dropwise
Mixed solution, after being added dropwise, be stirred at room temperature 8h, soak 20h, spheric granules is filtered and is taken out, deionized water rinsing, to obtain the final product
The host material, the concentration of the calcium chloride water is 0.02g/ml, the calcium chloride water and to be fixedization
The weight ratio of the mixed solution of cellulase is 0.5：1.
The preparation method of the binding agent comprises the following steps：
Polyethylene alcohol and water is added by weight into reactor, stirring is warming up to 50 DEG C, adds non-ionic surface active
Agent, ionic surface active agent, ethylene-vinyl acetate copolymer stirring 3h, are cooled to room temperature, add anticorrosion and bactericidal agent, stir 1h,
Obtain the binding agent.
Embodiment 2
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, described containing imidazolyl heterocycle
The preparing raw material of bi-quaternary ammonium salt includes metronidazole, epoxychloropropane, dodecyl dimethyl uncle
Amine, metronidazole described in the bi-quaternary ammonium salt containing imidazolyl heterocycle and the epoxychloropropane,
The weight ratio of the Dodecyl Dimethyl Amine is 1：1.4：1.8；The preparing raw material of the host material includes PLGA, four oxygen
Change three-iron, polyvinyl alcohol, agarose, cellulase, farnesol；Calculate by weight, the preparing raw material of the binding agent includes
31 parts of ethylene-vinyl acetate copolymer, 0.8 part of polyvinyl alcohol, 0.5 part of nonionic surfactant, anion surfactant
0.3 part, 0.2 part of anticorrosion and bactericidal agent, 50 parts of water；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolinone of 4,5- bis-；
The nonionic surfactant is OP-10, and the anion surfactant is neopelex, and the gardens are given up
Gurry includes leaf, bark, sawdust, pine needle, walnut shell；
It is the preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the modification of chitosan, described
The preparation method of host material and the preparation method of the binding agent are the same as embodiment 1.
Embodiment 3
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, described containing imidazolyl heterocycle
The preparing raw material of bi-quaternary ammonium salt includes metronidazole, epoxychloropropane, dodecyl dimethyl uncle
Amine, metronidazole described in the bi-quaternary ammonium salt containing imidazolyl heterocycle and the epoxychloropropane,
The weight ratio of the Dodecyl Dimethyl Amine is 1：1.4：1.8；The preparing raw material of the host material includes PLGA, four oxygen
Change three-iron, polyvinyl alcohol, agarose, cellulase, farnesol；Calculate by weight, the preparing raw material of the binding agent includes
31 parts of ethylene-vinyl acetate copolymer, 0.8 part of polyvinyl alcohol, 0.5 part of nonionic surfactant, anion surfactant
0.3 part, 0.2 part of anticorrosion and bactericidal agent, 50 parts of water；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolinone of 4,5- bis-；
The nonionic surfactant is OP-10, and the anion surfactant is neopelex, and the gardens are given up
Gurry includes leaf, bark, sawdust, pine needle, walnut shell；
It is the preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the modification of chitosan, described
The preparation method of host material and the preparation method of the binding agent are the same as embodiment 1.
Embodiment 4
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, described containing imidazolyl heterocycle
The preparing raw material of bi-quaternary ammonium salt includes metronidazole, epoxychloropropane, dodecyl dimethyl uncle
Amine, metronidazole described in the bi-quaternary ammonium salt containing imidazolyl heterocycle and the epoxychloropropane,
The weight ratio of the Dodecyl Dimethyl Amine is 1：1.2：1.5；The preparing raw material of the host material includes PLGA, four oxygen
Change three-iron, polyvinyl alcohol, agarose, cellulase, farnesol；Calculate by weight, the preparing raw material of the binding agent includes
31 parts of ethylene-vinyl acetate copolymer, 0.8 part of polyvinyl alcohol, 0.5 part of nonionic surfactant, anion surfactant
0.3 part, 0.2 part of anticorrosion and bactericidal agent, 50 parts of water；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolinone of 4,5- bis-；
The nonionic surfactant is OP-10, and the anion surfactant is neopelex, and the gardens are given up
Gurry includes leaf, bark, sawdust, pine needle, walnut shell；
It is the preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the modification of chitosan, described
The preparation method of host material and the preparation method of the binding agent are the same as embodiment 1.
Embodiment 5
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, described containing imidazolyl heterocycle
The preparing raw material of bi-quaternary ammonium salt includes metronidazole, epoxychloropropane, dodecyl dimethyl uncle
Amine, metronidazole described in the bi-quaternary ammonium salt containing imidazolyl heterocycle and the epoxychloropropane,
The weight ratio of the Dodecyl Dimethyl Amine is 1：2：2；The preparing raw material of the host material includes PLGA, four oxidations three
Iron, polyvinyl alcohol, agarose, cellulase, farnesol；Calculate by weight, the preparing raw material of the binding agent include ethene-
31 parts of acetate ethylene copolymer, 0.8 part of polyvinyl alcohol, 0.5 part of nonionic surfactant, 0.3 part of anion surfactant,
0.2 part of anticorrosion and bactericidal agent, 50 parts of water；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolinone of 4,5- bis-；It is described non-
Ionic surface active agent is OP-10, and the anion surfactant is neopelex, the garden waste bag
Include leaf, bark, sawdust, pine needle, walnut shell；
It is the preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the modification of chitosan, described
The preparation method of host material and the preparation method of the binding agent are the same as embodiment 1.
Comparative example 1
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the preparing raw material of the host material includes PLGA, ferroso-ferric oxide, polyvinyl alcohol, agarose, cellulose
Enzyme, farnesol；Calculate by weight, the preparing raw material of the binding agent includes 31 parts of ethylene-vinyl acetate copolymer, polyethylene
0.8 part of alcohol, 0.5 part of nonionic surfactant, 0.3 part of anion surfactant, 0.2 part of anticorrosion and bactericidal agent, 50 parts of water；Institute
It is the chloro- 2- n-octyls -3- isothiazolinone of 4,5- bis- to state anticorrosion and bactericidal agent；The nonionic surfactant is OP-10, described
Anion surfactant is neopelex, and the garden waste includes leaf, bark, sawdust, pine needle, walnut
Shell；
The preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the host material and described viscous
The preparation method of agent is tied with embodiment 1, difference lies in chitosan to substitute modification of chitosan.
Comparative example 2
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, described containing imidazolyl heterocycle
The preparing raw material of bi-quaternary ammonium salt includes metronidazole, epoxychloropropane, dodecyl dimethyl uncle
Amine, metronidazole described in the bi-quaternary ammonium salt containing imidazolyl heterocycle and the epoxychloropropane,
The weight ratio of the Dodecyl Dimethyl Amine is 1：1.4：1.8；Calculate by weight, the preparing raw material bag of the binding agent
Include 31 parts of ethylene-vinyl acetate copolymer, 0.8 part of polyvinyl alcohol, 0.5 part of nonionic surfactant, anion surface active
0.3 part of agent, 0.2 part of anticorrosion and bactericidal agent, 50 parts of water；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolines of 4,5- bis-
Ketone；The nonionic surfactant is OP-10, and the anion surfactant is neopelex, the garden
Woods discarded object includes leaf, bark, sawdust, pine needle, walnut shell；
It is the preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the modification of chitosan, described
The preparation method of binding agent is with embodiment 1, and difference lies in no host material.
Comparative example 3
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the preparing raw material of the host material includes PLGA, ferroso-ferric oxide, polyvinyl alcohol, agarose, cellulose
Enzyme, farnesol；Calculate by weight, the preparing raw material of the binding agent includes 31 parts of ethylene-vinyl acetate copolymer, polyethylene
0.8 part of alcohol, 0.5 part of nonionic surfactant, 0.3 part of anion surfactant, 0.2 part of anticorrosion and bactericidal agent, 50 parts of water；Institute
It is the chloro- 2- n-octyls -3- isothiazolinone of 4,5- bis- to state anticorrosion and bactericidal agent；The nonionic surfactant is OP-10, described
Anion surfactant is neopelex, and the garden waste includes leaf, bark, sawdust, pine needle, walnut
Shell；
The preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the host material and described viscous
The preparation method of agent is tied with embodiment 1, difference lies in no modification of chitosan.
Comparative example 4
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, described containing imidazolyl heterocycle
The preparing raw material of bi-quaternary ammonium salt includes metronidazole, epoxychloropropane, dodecyl dimethyl uncle
Amine, metronidazole described in the bi-quaternary ammonium salt containing imidazolyl heterocycle and the epoxychloropropane,
The weight ratio of the Dodecyl Dimethyl Amine is 1：1.4：1.8；Calculate by weight, the preparing raw material bag of the binding agent
Include 31 parts of ethylene-vinyl acetate copolymer, 0.8 part of polyvinyl alcohol, 0.5 part of nonionic surfactant, anion surface active
0.3 part of agent, 0.2 part of anticorrosion and bactericidal agent, 50 parts of water；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolines of 4,5- bis-
Ketone；The nonionic surfactant is OP-10, and the anion surfactant is neopelex, the garden
Woods discarded object includes leaf, bark, sawdust, pine needle, walnut shell；
It is the preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the modification of chitosan, described
The preparation method of binding agent is with embodiment 1, and difference lies in no host material, and the modified zeolite particle loads for zeolite granular
Cellulase.
The preparation method of the modified zeolite particle is as follows：
(1) zeolite granular, agarose, deionized water, farnesol are added into reactor, 0.5h is stirred, is warming up to 80 DEG C,
2h is stirred, standing is cooled to 30 DEG C, adds cellulase, stirs 3h, obtains the mixed solution of cellulose enzyme to be fixed；It is described
The weight ratio of zeolite granular and the agarose, the deionized water, the farnesol, the cellulase is 1：0.024：
20：0.002：0.05；
(2) calcium chloride water is added into reactor, stirs, cellulose enzyme to be fixed in step (1) is slowly added dropwise
Mixed solution, after being added dropwise, be stirred at room temperature 8h, soak 20h, spheric granules is filtered and is taken out, deionized water rinsing, to obtain the final product
The modified zeolite, the concentration of the calcium chloride water is 0.02g/ml, the calcium chloride water and to be fixedization
The weight ratio of the mixed solution of cellulase is 0.5：1.
Comparative example 5
Calculate by weight, the organic covering composition in environment-friendly type gardens includes：
Wherein, calculate by weight, the preparing raw material of the binding agent includes 31 parts of ethylene-vinyl acetate copolymer, gathers
0.8 part of vinyl alcohol, 0.5 part of nonionic surfactant, 0.3 part of anion surfactant, 0.2 part of anticorrosion and bactericidal agent, water 50
Part；The anticorrosion and bactericidal agent is the chloro- 2- n-octyls -3- isothiazolinone of 4,5- bis-；The nonionic surfactant is OP-
10, the anion surfactant is neopelex, and the garden waste includes leaf, bark, sawdust, pine
Pin, walnut shell；
The preparation method of the organic covering composition in environment-friendly type gardens, the preparation method of the binding agent with embodiment 1,
Difference lies in modified zeolite particle to substitute zeolite granular, chitosan substituting modification chitosan, no host material.
The preparation method of the modified zeolite particle is as follows：
(1) zeolite granular, agarose, deionized water, farnesol are added into reactor, 0.5h is stirred, is warming up to 80 DEG C,
2h is stirred, standing is cooled to 30 DEG C, adds cellulase, stirs 3h, obtains the mixed solution of cellulose enzyme to be fixed；It is described
The weight ratio of zeolite granular and the agarose, the deionized water, the farnesol, the cellulase is 1：0.024：
20：0.002：0.05；
(2) calcium chloride water is added into reactor, stirs, cellulose enzyme to be fixed in step (1) is slowly added dropwise
Mixed solution, after being added dropwise, be stirred at room temperature 8h, soak 20h, spheric granules is filtered and is taken out, deionized water rinsing, to obtain the final product
The modified zeolite, the concentration of the calcium chloride water is 0.02g/ml, the calcium chloride water and to be fixedization
The weight ratio of the mixed solution of cellulase is 0.5：1.
Performance test：
Test method：Pot experiment method；The white plastic bucket of unified specification, high 50cm, internal diameter 48cm, outside diameter 50cm, bottom
Footpath 32cm；Test period is that the weeds for testing to draw after three months, three months suppress index, soil organic substance and nutrient
And soil moisture content index.
Fetch earth once when covering 3 months, measure organic matter, available nitrogen, rapid available phosphorus；
1st, soil moisture content：
Use WET soil moistures/salinity/thermometer.Within the observation phase, middle of the month every month supervises soil moisture content
Survey, observation time 08:00-18:00, every 2 hour observations once, Observational depth 0-20cm, 3 repetitions；
2nd, soil nutrient
Make organic oxidation of coal in soil using potassium bichromate-sulfuric acid solution, according to oxidant quality difference value before and after oxidation
And coefficient, calculate soil organic matter content；Select alkali-diffusion method measure available nitrogen；With hydrochloric acid-ammonium fluoride method measure soil speed
Imitate phosphorus；Use NH4OAC extractions-flame spectrophotometric determination soil available nitrogen.
It is seen from the above data that the organic covering composition in environment-friendly type gardens provided by the invention, it can effectively keep
Soil moisture, adjusts temperature, improves soil physico-chemical property, strengthens soil microbial activity, adjusts the soil water, fertilizer, air and heat shape
Condition, increases soil fertility, coordinate plant growth development, strengthens diseases prevention, the disease resistance of tree body, low-temperature resistance, have performance it is stable,
While resistance of rainwater washing against, organic mat airborne dust or reentrainment of dust are also overcome, reach the effect beautified the environment.
Foregoing example is merely illustrative, some features of the feature for explaining the disclosure.Appended claim
It is intended to require the scope as wide as possible being contemplated that, and embodiments as presented herein is only according to all possible embodiment
Combination selection embodiment explanation.Therefore, the purpose of applicant is appended claim not by the explanation present invention
Feature exemplary selectional restriction.And the progress in science and technology will not formed due to the inaccuracy of language performance and not
The possible equivalent or son being presently considered are replaced, and these changes should also be interpreted by appended in the conceived case
Claim covers.
Claims (10)
- A kind of 1. organic covering composition in environment-friendly type gardens, it is characterised in that calculate by weight, including：Wherein, the modification of chitosan is bi-quaternary ammonium salt of the chitosan graft containing imidazolyl heterocycle, and the preparation of the host material is former Material includes PLGA, ferroso-ferric oxide, polyvinyl alcohol, agarose, cellulase, farnesol；The preparing raw material bag of the binding agent Include ethylene-vinyl acetate copolymer, polyvinyl alcohol, nonionic surfactant, anion surfactant, anticorrosion and bactericidal agent, Water.
- 2. the organic covering composition in environment-friendly type gardens according to claim 1, it is characterised in that calculate by weight, including
- 3. the organic covering composition in environment-friendly type gardens according to claim 1, it is characterised in that described double containing imidazolyl heterocycle The preparing raw material of quaternary ammonium salt includes metronidazole, epoxychloropropane, Dodecyl Dimethyl Amine.
- 4. the organic covering composition in environment-friendly type gardens according to claim 3, it is characterised in that described double containing imidazolyl heterocycle Metronidazole described in quaternary ammonium salt and the epoxychloropropane, the Dodecyl Dimethyl Amine Weight ratio be 1：(1.2-2)：(1.5-2.5).
- 5. the organic covering composition in environment-friendly type gardens according to claim 1, it is characterised in that the weight of the modification of chitosan Average molecular weight is 1000-5000.
- 6. the organic covering composition in environment-friendly type gardens according to claim 1, calculates by weight, it is characterised in that described The preparing raw material of binding agent includes 30-35 parts of ethylene-vinyl acetate copolymer, 0.5-2 parts of polyvinyl alcohol, non-ionic surface active 0.5-1 parts of agent, 0.2-0.5 parts of anion surfactant, 0.1-0.5 parts of anticorrosion and bactericidal agent, 50-60 parts of water.
- 7. the organic covering composition in environment-friendly type gardens according to claim 6, it is characterised in that the non-ionic surface active Agent includes the one or more in OP series of surfactants, NP series of surfactants, Tween series of surfactants.
- 8. the organic covering composition in environment-friendly type gardens according to claim 6, it is characterised in that the anion surface active Agent includes dodecyl phenenyl sulfate, neopelex, cetyl phenyl-hydrogen-sulfate sodium, one kind in laurate sulfuric ester It is or a variety of.
- 9. the organic covering composition in environment-friendly type gardens according to claim 1, it is characterised in that the garden waste includes Leaf, bark, sawdust, pine needle, walnut shell are one or more.
- 10. according to the preparation method of any one of the claim 1-9 organic covering compositions in environment-friendly type gardens, its feature exists In comprising the following steps：(1) garden waste is collected and dries into dry material, dry material is processed into granule materials through crushing and processing；(2) added by weight into agitating device granule materials in step (1), cellular activated carbon, zeolite granular, binding agent, Modification of chitosan, host material, stir 3-5h, obtain the organic covering composition in environment-friendly type gardens.
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| CN109305858A (en) * | 2018-12-06 | 2019-02-05 | 天津市琪梦环保科技有限公司 | A kind of open ground covering |
| CN110527518A (en) * | 2018-05-24 | 2019-12-03 | 安徽大汇园林工程有限公司 | A kind of organic covering composition in environment-friendly type gardens |
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| CN107987847B (en) | 2020-08-25 |
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