CN107973941B - Degradable bagasse mulching film and preparation method thereof - Google Patents
Degradable bagasse mulching film and preparation method thereof Download PDFInfo
- Publication number
- CN107973941B CN107973941B CN201711287894.7A CN201711287894A CN107973941B CN 107973941 B CN107973941 B CN 107973941B CN 201711287894 A CN201711287894 A CN 201711287894A CN 107973941 B CN107973941 B CN 107973941B
- Authority
- CN
- China
- Prior art keywords
- bagasse
- parts
- degradable
- weight
- stirring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
- A01G13/02—Protective coverings for plants; Coverings for the ground; Devices for laying-out or removing coverings
- A01G13/0256—Ground coverings
- A01G13/0268—Mats or sheets, e.g. nets or fabrics
- A01G13/0275—Films
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2303/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
- C08J2303/02—Starch; Degradation products thereof, e.g. dextrin
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2405/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2401/00 or C08J2403/00
- C08J2405/04—Alginic acid; Derivatives thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Materials Engineering (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A degradable bagasse mulch film and a preparation method thereof. The method comprises the following steps: dissolving 4-6 parts by weight of cassava starch in 88-92 parts by weight of water, and stirring at 88-92 ℃ to gelatinize the cassava starch; after the cassava starch is gelatinized, adding bagasse ultrafine powder in 0.5-2.5 parts by weight, and stirring; after the bagasse ultrafine powder is fully stirred, adding 2-4 parts by weight of glycerol and 0.4-0.6 part by weight of sodium alginate, and stirring at the temperature of 78-82 ℃ to dissolve the glycerol and the sodium alginate; after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 40-50min to obtain colloidal fluid; the colloid liquid is processed into the degradable bagasse mulching film. The degradable bagasse mulching film and the preparation method thereof can realize direct utilization of bagasse and promote wide utilization of biomass resources.
Description
Technical Field
The invention relates to the field of mulching film production, and in particular relates to a degradable bagasse mulching film and a preparation method thereof.
Background
Bagasse belongs to non-wood fibers, and can be classified as grass fibers in nature. It has a very thin P layer (primary wall), a thicker S1 layer (secondary wall outer layer) and an S2 layer (secondary wall middle layer) divided into two large layers. Microfibers of S2 layerAligned and oriented at about 30-40 deg. to the axial direction, the microfibers being composed of
Of the base microfiber of (1). But it is different from general grass fiber, has the advantages of centralized source, huge yield, simple collection and small transportation radius, and is a high-quality renewable agricultural waste resource. For a long time, the comprehensive utilization rate and the generated additional value of bagasse are low, most of bagasse is burned as energy fuel or directly discarded, and part of bagasse is used for primary application of papermaking and artificial boards, but the bagasse contains a large amount of cellulose, hemicellulose and lignin, and rapid development is achieved in the field of biological material research.
The traditional bagasse application is to modify and prepare a novel material by physical and chemical means, mainly relates to the research on the composite performance of the bagasse, but the characteristics and the structural performance of the bagasse are not deeply expanded, and a complex production process is involved to a certain extent. The characteristics of the bagasse are expanded and more performances are derived by the superfine grinding technology, and the application of the bagasse in degradable membrane materials has higher theoretical and application values.
A process for preparing the bagasse-base biomembrane 201010141466.5 includes such steps as enriching a lot of nitrifying-denitrifying bacteria on the spherical carrier of bagasse, natural filming, and treating polluted water with less investment and high effect.
A starch-base composite blow-moulded film and its preparing process 201210351077.4, which features high content of starch and its degradative component up to 80%, less degradation of assistant, high specific weight of component and high content of waste.
Disclosure of Invention
The invention aims to provide a degradable bagasse mulching film which can solve the problem of complex pulping process of fiber-containing biomass such as bagasse and the like, can directly form a film of the biomass such as the bagasse and the like in a solid form, and has simple method and strong applicability. And because the bagasse ultrafine powder is added, the bagasse mulching film has better performance.
The invention also aims to provide a preparation method of the degradable bagasse mulching film, which solves the problem of complex pulping process of fiber-containing biomass such as bagasse and the like, can promote the combination of bagasse ultrafine powder and gelatinized tapioca starch through ultrasonic treatment, and can disperse the mixed solution more uniformly and eliminate bubbles.
The technical problem to be solved by the invention is realized by adopting the following technical scheme.
The invention provides a preparation method of a degradable bagasse mulching film, which comprises the following steps:
dissolving 4-6 parts by weight of cassava starch in 88-92 parts by weight of water, and stirring at 88-92 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, adding bagasse ultrafine powder in 0.5-2.5 parts by weight, and stirring;
after the bagasse ultrafine powder is fully stirred, adding 2-4 parts by weight of glycerol and 0.4-0.6 part by weight of sodium alginate, and stirring at the temperature of 78-82 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 40-50min to obtain colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
In one embodiment of the present invention, the method comprises:
dissolving 5 parts of cassava starch in 90 parts of water according to parts by weight, and stirring at the temperature of 90 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, adding bagasse ultrafine powder in 0.5-2.5 parts by weight, and stirring;
after the bagasse ultrafine powder is fully stirred, adding 3 parts by weight of glycerol and 0.5 part by weight of sodium alginate, and stirring at the temperature of 80 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 45min to obtain a colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
In one embodiment of the invention, the method for processing the colloid liquid into the degradable bagasse mulch film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 1.5-2.5h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 48-52 ℃.
In one embodiment of the invention, the method for processing the colloid liquid into the degradable bagasse mulch film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 2h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 50 ℃.
In one embodiment of the invention, the method for producing bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of pulverized bagasse and 28-32 parts of water according to the parts by weight, and stirring at the temperature of 88-92 ℃ for 1.3-1.7 h;
drying the mixed solution of the bagasse and water at 48-52 ℃;
and (4) pulverizing the dried bagasse.
In one embodiment of the invention, the method for producing bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of crushed bagasse and 30 parts of water according to the parts by weight, and stirring at the temperature of 90 ℃ for 1.5 hours;
drying the mixed solution of the bagasse and water at 50 ℃;
and (4) pulverizing the dried bagasse.
In one embodiment of the invention, the powdering process comprises:
crushing the dried bagasse into bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 15-25 min.
In one embodiment of the invention, the bagasse coarse powder crushing method comprises the following steps:
and putting the dried bagasse into a high-speed universal pulverizer to be pulverized for 14-16s, and repeating for 2-4 times, wherein the time interval between every two adjacent times is 0.9-1.1 min.
In one embodiment of the invention, the powdering process comprises:
putting the dried bagasse into a high-speed universal pulverizer to pulverize for 15s, and repeating for 3 times, wherein the time interval between every two adjacent times is 1min, so as to obtain bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 20 min.
The invention provides a degradable bagasse mulch film, which is prepared by the preparation method of the degradable bagasse mulch film.
The preparation method of the degradable bagasse mulching film provided by the embodiment of the invention has the beneficial effects that: the bagasse ultrafine powder and the gelatinized cassava starch are mixed, glycerol and sodium alginate are added, ultrasonic treatment is carried out, and then colloid liquid capable of preparing the mulching film is prepared, wherein the gelatinized cassava starch is used as a flow-carrying phase, the bagasse ultrafine powder is uniformly distributed in the cassava starch with cohesiveness, and the bagasse mulching film prepared from the obtained colloid liquid has high structural strength, so that direct utilization of bagasse can be realized, and wide utilization of biomass resources is promoted.
The degradable bagasse mulching film provided by the embodiment of the invention has the beneficial effects that: has degradable performance and high structural strength, can realize the direct utilization of bagasse and promote the wide utilization of biomass resources.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
The preparation method of the degradable bagasse mulching film of the embodiment of the invention is specifically described below.
The preparation method of the degradable bagasse mulching film comprises the following steps:
dissolving 4-6 parts by weight of cassava starch in 88-92 parts by weight of water, and stirring at 88-92 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, adding bagasse ultrafine powder in 0.5-2.5 parts by weight, and stirring;
after the bagasse ultrafine powder is fully stirred, adding 2-4 parts by weight of glycerol and 0.4-0.6 part by weight of sodium alginate, and stirring at the temperature of 78-82 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 40-50min to obtain colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
The bagasse ultrafine powder is stirred with the gelatinized cassava starch in an ultrasonic treatment mode, so that the bagasse ultrafine powder is fully mixed in the gelatinized cassava starch, and the prepared colloidal fluid can be made into a mulching film with better structural strength, thereby directly utilizing the bagasse and promoting the wide utilization of biomass resources.
Ultrasonic treatment is primarily the use of its power characteristics and cavitation to alter or accelerate changes in certain physical, chemical, biological characteristics or states of matter.
The bagasse ultra-fine powder can be fully and uniformly dispersed in the gelatinized cassava starch by ultrasonic treatment, so that the structural strength of the prepared degradable bagasse mulching film is higher.
Specifically, the ultrasonic treatment is performed by using a commercially available ultrasonic generator, and the specific structure thereof is the prior art and is not described herein again.
Further, comprising:
dissolving 5 parts of cassava starch in 90 parts of water according to parts by weight, and stirring at the temperature of 90 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, adding bagasse ultrafine powder in 0.5-2.5 parts by weight, and stirring;
after the bagasse ultrafine powder is fully stirred, adding 3 parts by weight of glycerol and 0.5 part by weight of sodium alginate, and stirring at the temperature of 80 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 45min to obtain a colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
Further, the method for processing the colloid liquid into the degradable bagasse mulching film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 1.5-2.5h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 48-52 ℃.
And injecting the colloid liquid into a prefabricated mold, wherein the dynamic balance of the combination among all molecules in the colloid liquid can be realized after 1.5-2.5h, and the drying time is shorter under the condition that the prepared mulching film has higher structural strength at the temperature of 48-52 ℃.
Further, the method for processing the colloid liquid into the degradable bagasse mulch film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 2h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 50 ℃.
Further, the production method of the bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of pulverized bagasse and 28-32 parts of water according to the parts by weight, and stirring at the temperature of 88-92 ℃ for 1.3-1.7 h;
drying the mixed solution of the bagasse and water at 48-52 ℃;
and (4) pulverizing the dried bagasse.
The bagasse is stirred in water at the temperature of 88-92 ℃ for 1.3-1.7h, so that the water-soluble part in the bagasse can be fully dissolved, and the substances such as dust, sugar, pectin and the like in the bagasse can be effectively removed.
After removing substances such as dust, sugar, pectin and the like in the bagasse, the bagasse is dried at the temperature of 48-52 ℃, so that the bagasse can be dried in a short time under the condition of ensuring that the properties of the bagasse cannot be damaged.
Further, the production method of the bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of crushed bagasse and 30 parts of water according to the parts by weight, and stirring at the temperature of 90 ℃ for 1.5 hours;
drying the mixed solution of the bagasse and water at 50 ℃;
and (4) pulverizing the dried bagasse.
Further, the powdering treatment comprises:
crushing the dried bagasse into bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 15-25 min.
The bagasse is graded in a vibration mill and is crushed for 15-25min, so that the granularity of the prepared bagasse ultra-fine powder is 10nm-100 mu m, and the prepared degradable bagasse mulching film has higher structural strength.
Further, the crushing method of the bagasse coarse powder comprises the following steps:
and putting the dried bagasse into a high-speed universal pulverizer to be pulverized for 14-16s, and repeating for 2-4 times, wherein the time interval between every two adjacent times is 0.9-1.1 min.
Further, the powdering treatment comprises:
putting the dried bagasse into a high-speed universal pulverizer to pulverize for 15s, and repeating for 3 times, wherein the time interval between every two adjacent times is 1min, so as to obtain bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 20 min.
The high-speed universal pulverizer is a device which utilizes the high-speed relative motion between movable fluted discs to pulverize the food and treat the comprehensive actions of tooth impact, friction, material impact and the like.
The high-speed universal pulverizer can fully pulverize bagasse, so that the granularity of the bagasse is reduced, and the crushing of a vibration mill is facilitated.
Specifically, the high-speed universal pulverizer is a commercially available high-speed universal pulverizer, and the specific structure thereof is the prior art and is not described herein again.
The vibration mill utilizes the high-frequency vibration of a cylinder, a steel ball or steel bar medium in the cylinder impacts materials by means of inertia force, and the acceleration of the medium impacting the materials can reach 10g-15g, so that the vibration mill has the advantages of compact structure, small volume, light weight, low energy consumption, high yield, concentrated grinding granularity, simplified process, simplicity in operation, convenience in maintenance, easiness in replacement of lining plate medium and the like, and can be widely applied to powder making in industries such as metallurgy, building materials, mines, fire resistance, chemical engineering, glass, ceramics, graphite and the like.
The bagasse coarse powder is crushed by a vibration mill, so that the grain diameter of the bagasse ultra-fine powder can reach the requirement of 10nm-100 mu m.
Specifically, the vibration mill is a commercially available vibration mill, and the specific structure thereof is the prior art and is not described herein again.
A degradable bagasse mulch film is prepared by the preparation method of the degradable bagasse mulch film.
The degradable bagasse mulching film can realize direct utilization of bagasse, has high structural strength, and has a degradability rate of over 95.
The features and properties of the present invention are described in further detail below with reference to examples.
Example 1
The embodiment provides a degradable bagasse mulching film, which is prepared by the following preparation method of the degradable bagasse mulching film, and comprises the following steps:
dissolving 4 parts of cassava starch in 88 parts of water by weight, and stirring at 88 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, adding 0.5 part by weight of bagasse ultrafine powder, and stirring;
after the bagasse ultrafine powder is fully stirred, 2 parts by weight of glycerol and 0.4 part by weight of sodium alginate are added, and the mixture is stirred at the temperature of 78 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 40min to obtain colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
Specifically, the method for processing the colloid liquid into the degradable bagasse mulching film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 1.5h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 48 ℃.
Specifically, the production method of the bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of crushed bagasse and 28 parts of water according to parts by weight, and stirring at the temperature of 88 ℃ for 1.3 hours;
drying the mixed solution of the bagasse and water at 48 ℃;
and (4) pulverizing the dried bagasse.
Specifically, the powdering treatment comprises:
putting the dried bagasse into a high-speed universal pulverizer to be pulverized for 14s, and repeating for 2 times, wherein the time interval between every two adjacent times is 0.9min, so as to obtain bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 15 min.
Example 2
The embodiment provides a degradable bagasse mulching film, which is prepared by the following preparation method of the degradable bagasse mulching film, and comprises the following steps:
dissolving 5 parts of cassava starch in 90 parts of water according to parts by weight, and stirring at the temperature of 90 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, 1 part of bagasse ultrafine powder in parts by weight is added and stirred;
after the bagasse ultrafine powder is fully stirred, adding 3 parts by weight of glycerol and 0.5 part by weight of sodium alginate, and stirring at the temperature of 80 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 45min to obtain a colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
Specifically, the method for processing the colloid liquid into the degradable bagasse mulching film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 2h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 50 ℃.
Specifically, the production method of the bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of crushed bagasse and 30 parts of water according to the parts by weight, and stirring at the temperature of 90 ℃ for 1.5 hours;
drying the mixed solution of the bagasse and water at 50 ℃;
and (4) pulverizing the dried bagasse.
Specifically, the powdering treatment comprises:
putting the dried bagasse into a high-speed universal pulverizer to pulverize for 15s, and repeating for 3 times, wherein the time interval between every two adjacent times is 1min, so as to obtain bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 20 min.
Example 3
The embodiment provides a degradable bagasse mulching film, which is prepared by the following preparation method of the degradable bagasse mulching film, and comprises the following steps:
dissolving 5 parts of cassava starch in 90 parts of water according to parts by weight, and stirring at the temperature of 90 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, 1.5 parts of bagasse ultrafine powder in parts by weight is added and stirred;
after the bagasse ultrafine powder is fully stirred, adding 3 parts by weight of glycerol and 0.5 part by weight of sodium alginate, and stirring at the temperature of 80 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 45min to obtain a colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
Specifically, the method for processing the colloid liquid into the degradable bagasse mulching film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 2h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 50 ℃.
Specifically, the production method of the bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of crushed bagasse and 30 parts of water according to the parts by weight, and stirring at the temperature of 90 ℃ for 1.5 hours;
drying the mixed solution of the bagasse and water at 50 ℃;
and (4) pulverizing the dried bagasse.
Specifically, the powdering treatment comprises:
putting the dried bagasse into a high-speed universal pulverizer to pulverize for 15s, and repeating for 3 times, wherein the time interval between every two adjacent times is 1min, so as to obtain bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 20 min.
Example 4
The embodiment provides a degradable bagasse mulching film, which is prepared by the following preparation method of the degradable bagasse mulching film, and comprises the following steps:
dissolving 5 parts of cassava starch in 90 parts of water according to parts by weight, and stirring at the temperature of 90 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, adding 2 parts of bagasse ultrafine powder by weight, and stirring;
after the bagasse ultrafine powder is fully stirred, adding 3 parts by weight of glycerol and 0.5 part by weight of sodium alginate, and stirring at the temperature of 80 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 45min to obtain a colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
Specifically, the method for processing the colloid liquid into the degradable bagasse mulching film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 2h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 50 ℃.
Specifically, the production method of the bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of crushed bagasse and 30 parts of water according to the parts by weight, and stirring at the temperature of 90 ℃ for 1.5 hours;
drying the mixed solution of the bagasse and water at 50 ℃;
and (4) pulverizing the dried bagasse.
Specifically, the powdering treatment comprises:
putting the dried bagasse into a high-speed universal pulverizer to pulverize for 15s, and repeating for 3 times, wherein the time interval between every two adjacent times is 1min, so as to obtain bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 20 min.
Example 5
The embodiment provides a degradable bagasse mulching film, which is prepared by the following preparation method of the degradable bagasse mulching film, and comprises the following steps:
dissolving 6 parts of cassava starch in 92 parts of water by weight, and stirring at the temperature of 92 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, 2.5 parts of bagasse ultrafine powder in parts by weight is added and stirred;
after the bagasse ultrafine powder is fully stirred, adding 4 parts by weight of glycerol and 0.6 part by weight of sodium alginate, and stirring at 82 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 50min to obtain colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
Specifically, the method for processing the colloid liquid into the degradable bagasse mulching film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 2.5 hours at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 52 ℃.
Specifically, the production method of the bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of crushed bagasse and 32 parts of water according to the weight parts, and stirring at the temperature of 92 ℃ for 1.7 hours;
drying the mixed solution of the bagasse and water at 52 ℃;
and (4) pulverizing the dried bagasse.
Specifically, the powdering treatment comprises:
putting the dried bagasse into a high-speed universal pulverizer to be pulverized for 16s, and repeating for 4 times, wherein the time interval between every two adjacent times is 1.1min, so as to obtain bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 25 min.
In conclusion, the degradable bagasse mulching film and the preparation method thereof provided by the embodiment of the invention can improve the utilization efficiency of bagasse, and a physical method is used for processing the bagasse, so that the complex pulping process of fiber-containing biomass such as bagasse is solved, the biomass such as bagasse is directly formed into a film in a solid form, and the method is simple and has strong applicability. And the granularity of the bagasse ultrafine powder is controlled between 10nm and 100 mu m, so that the bagasse ultrafine powder is used as a main raw material of the degradable bagasse mulching film. Compared with untreated bagasse, the raw material has enhanced material characteristics, and improves the performance of the degradable bagasse mulching film. And the degradation rate of the degradable bagasse mulching film can reach more than 95 percent, and the degradable bagasse mulching film can be used as a mulching film.
The embodiments described above are some, but not all embodiments of the invention. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (7)
1. The preparation method of the degradable bagasse mulching film is characterized by comprising the following steps:
dissolving 4-6 parts by weight of cassava starch in 88-92 parts by weight of water, and stirring at 88-92 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, adding bagasse ultrafine powder in 0.5-2.5 parts by weight, and stirring;
after the bagasse ultrafine powder is fully stirred, adding 2-4 parts by weight of glycerol and 0.4-0.6 part by weight of sodium alginate, and stirring at the temperature of 78-82 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 40-50min to obtain colloidal fluid;
processing the colloid liquid into degradable bagasse mulching film;
the production method of the bagasse ultrafine powder comprises the following steps:
crushing bagasse;
mixing 1 part of pulverized bagasse and 28-32 parts of water according to the parts by weight, and stirring at the temperature of 88-92 ℃ for 1.3-1.7 h;
drying the mixed solution of the bagasse and water at 48-52 ℃;
pulverizing the dried bagasse;
the powdering treatment comprises:
crushing the dried bagasse into bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 15-25 min;
the crushing method of bagasse coarse powder comprises the following steps:
and putting the dried bagasse into a high-speed universal pulverizer to be pulverized for 14-16s, and repeating for 2-4 times, wherein the time interval between every two adjacent times is 0.9-1.1 min.
2. The preparation method of the degradable bagasse mulching film as claimed in claim 1, which comprises:
dissolving 5 parts of cassava starch in 90 parts of water according to parts by weight, and stirring at the temperature of 90 ℃ to gelatinize the cassava starch;
after the cassava starch is gelatinized, adding bagasse ultrafine powder in 0.5-2.5 parts by weight, and stirring;
after the bagasse ultrafine powder is fully stirred, adding 3 parts by weight of glycerol and 0.5 part by weight of sodium alginate, and stirring at the temperature of 80 ℃ to dissolve the glycerol and the sodium alginate;
after the glycerol and the sodium alginate are fully dissolved, carrying out ultrasonic treatment for 45min to obtain a colloidal fluid;
the colloid liquid is processed into the degradable bagasse mulching film.
3. The preparation method of the degradable bagasse mulch film according to claim 1, characterized in that the method for processing the colloid liquid into the degradable bagasse mulch film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 1.5-2.5h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 48-52 ℃.
4. The preparation method of the degradable bagasse mulch film according to claim 3, characterized in that the method for processing the colloid liquid into the degradable bagasse mulch film comprises the following steps:
injecting the colloidal fluid into a prefabricated mold, standing for 2h at room temperature to ensure that the colloidal fluid is spread flatly and has stable form;
and drying the prefabricated mould filled with the colloidal fluid at the temperature of 50 ℃.
5. The preparation method of the degradable bagasse mulching film according to claim 1, characterized in that the production method of bagasse ultra-fine powder comprises:
crushing bagasse;
mixing 1 part of crushed bagasse and 30 parts of water according to the parts by weight, and stirring at the temperature of 90 ℃ for 1.5 hours;
drying the mixed solution of the bagasse and water at 50 ℃;
and (4) pulverizing the dried bagasse.
6. The preparation method of the degradable bagasse mulching film as claimed in claim 1, wherein the powdering treatment comprises:
putting the dried bagasse into a high-speed universal pulverizer to pulverize for 15s, and repeating for 3 times, wherein the time interval between every two adjacent times is 1min, so as to obtain bagasse coarse powder;
crushing bagasse coarse powder in a vibration mill for 20 min.
7. A degradable bagasse mulch film, characterized in that the degradable bagasse mulch film is prepared by the method for preparing the degradable bagasse mulch film according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711287894.7A CN107973941B (en) | 2017-12-07 | 2017-12-07 | Degradable bagasse mulching film and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711287894.7A CN107973941B (en) | 2017-12-07 | 2017-12-07 | Degradable bagasse mulching film and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107973941A CN107973941A (en) | 2018-05-01 |
| CN107973941B true CN107973941B (en) | 2021-03-12 |
Family
ID=62009647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711287894.7A Active CN107973941B (en) | 2017-12-07 | 2017-12-07 | Degradable bagasse mulching film and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107973941B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110229364A (en) * | 2019-07-09 | 2019-09-13 | 张大庆 | A kind of chitin biological liquid degradable mulch and preparation method thereof |
| CN110423369A (en) * | 2019-09-12 | 2019-11-08 | 中国热带农业科学院农产品加工研究所 | Film and preparation method thereof and degradable mulch |
| CN113400690B (en) * | 2021-08-06 | 2022-09-13 | 甘肃华瑞农业股份有限公司 | Device and method for manufacturing degradable agricultural mulching film |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1719797A1 (en) * | 2005-05-06 | 2006-11-08 | Michigan State University | Starch-vegetable oil graft copolymers and their biofiber composites, and a process for their manufacture |
| CN103601958A (en) * | 2013-10-16 | 2014-02-26 | 鲁奎 | Polyethylene agricultural film containing bagasse |
| CN106349669A (en) * | 2016-09-26 | 2017-01-25 | 中国热带农业科学院农产品加工研究所 | Bagasse biodegradable plastic and preparation method thereof |
| CN106496650A (en) * | 2016-10-29 | 2017-03-15 | 吴迪 | A kind of preparation method of sugarcane field degradable function mulch film |
-
2017
- 2017-12-07 CN CN201711287894.7A patent/CN107973941B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1719797A1 (en) * | 2005-05-06 | 2006-11-08 | Michigan State University | Starch-vegetable oil graft copolymers and their biofiber composites, and a process for their manufacture |
| CN103601958A (en) * | 2013-10-16 | 2014-02-26 | 鲁奎 | Polyethylene agricultural film containing bagasse |
| CN106349669A (en) * | 2016-09-26 | 2017-01-25 | 中国热带农业科学院农产品加工研究所 | Bagasse biodegradable plastic and preparation method thereof |
| CN106496650A (en) * | 2016-10-29 | 2017-03-15 | 吴迪 | A kind of preparation method of sugarcane field degradable function mulch film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107973941A (en) | 2018-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107973941B (en) | Degradable bagasse mulching film and preparation method thereof | |
| CN107267235B (en) | A kind of method that more raw materials prepare novel water-coal-slurry product | |
| Lomovsky et al. | Mechanical pretreatment | |
| AU2020100319A4 (en) | Method for preparing cellulose nanofibrils by deep eutectic solvent pretreatment | |
| CN102080342B (en) | Anionic organic particles and preparation and application thereof | |
| CN103387685A (en) | Preparation method of cellulose nano-fiber/polyvinyl alcohol composite membrane | |
| CN102115994B (en) | Method for treating lignocellulose raw material | |
| CN104692741B (en) | A kind of stalk cellulose fiber/water cement-based composite material and preparation method thereof | |
| CN107287956B (en) | Method for preparing nano-cellulose by combining enzyme pretreatment with mechanical grinding | |
| CN107602709B (en) | Clean preparation method of carboxymethyl nano-cellulose material | |
| CN104293858A (en) | Preparation method for nano-microcrystalline cellulose | |
| CN107555870A (en) | Geo-polymer base rice straw fiberboard and preparation method thereof | |
| CN112500530A (en) | Calcium carbonate/bagasse cellulose-based super absorbent resin and preparation method thereof | |
| CN108706585A (en) | A kind of preparation method of big kenaf stalk activated charcoal | |
| CN105839440A (en) | Preparation method of bagasse nanocellulose | |
| CN110644278A (en) | Environment-friendly paper and preparation method thereof | |
| CN110055788B (en) | Micro-nano lignocellulose dispersion liquid and preparation method and application thereof | |
| CN101168677A (en) | Method for producing high-strength post-forming biomass charcoal | |
| CN109868667B (en) | Preparation method of lignin-containing nanocellulose filaments | |
| CN101037632A (en) | Composite coal binder for lime vertical kiln | |
| Ojo et al. | Initial assessment of reuse of sustainable wastes for fibreboard production: the case of waste paper and water hyacinth | |
| JP2024519526A (en) | Bioenzymatic pretreatment to control the physical and chemical properties of wheat grass waste granular fuel | |
| CN103518017A (en) | Method for producing cellulose-containing mass for producing composite material | |
| CN102159637A (en) | Cellulose-containing mass | |
| CN105602270A (en) | Multifunctional purely natural environment-friendly material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Zhou Wei Inventor after: Chang Gang Inventor after: Wei Xiaoyi Inventor after: Wang Fei Inventor after: Cui Lihong Inventor after: Pay for the tune Inventor after: Cao Yupo Inventor after: Li Jihua Inventor before: Chang Gang Inventor before: Wei Xiaoyi Inventor before: Zhou Wei Inventor before: Wang Fei Inventor before: Cui Lihong Inventor before: Pay for the tune Inventor before: Cao Yupo Inventor before: Li Jihua |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |