CN106366354A - Lignocellulose starch degradable film and preparation method thereof - Google Patents

Lignocellulose starch degradable film and preparation method thereof Download PDF

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Publication number
CN106366354A
CN106366354A CN201610761159.4A CN201610761159A CN106366354A CN 106366354 A CN106366354 A CN 106366354A CN 201610761159 A CN201610761159 A CN 201610761159A CN 106366354 A CN106366354 A CN 106366354A
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China
Prior art keywords
parts
starch
lignocellulose
thin film
caprolactone
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Pending
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CN201610761159.4A
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Chinese (zh)
Inventor
严荣楼
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ANHUI JINHON GREENISM TECHNOLOGY Co Ltd
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ANHUI JINHON GREENISM TECHNOLOGY Co Ltd
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Priority to CN201610761159.4A priority Critical patent/CN106366354A/en
Publication of CN106366354A publication Critical patent/CN106366354A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L3/00—Compositions of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08L3/02—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
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • 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
    • C08J2403/00—Characterised by the use of starch, amylose or amylopectin or of their derivatives or degradation products
    • C08J2403/02—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
    • C08J2467/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2467/04—Polyesters derived from hydroxy carboxylic acids, e.g. lactones
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/06—Biodegradable
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/16—Applications used for films
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Abstract

A lignocellulose-starch degradable film is characterized by being prepared from the following raw materials in parts by weight: 100 parts of corn starch, 8-10 parts of wheat starch, 5-8 parts of lignin fiber, 1-2 parts of isosorbide-2-acetate, 3-4 parts of nanoscale molybdenum oxide, 3-4 parts of octadecanamide, 80-100 parts of DMF, 8-10 parts of acetic anhydride, 100-120 parts of pyridine, 120-150 parts of diethylene glycol dimethyl ether, 15-20 parts of a sodium naphthalene solution, 5-8 parts of caprolactone, 200-300 parts of petroleum ether, 200-300 parts of tetrahydrofuran, 5-8 parts of glycerinum, 5-8 parts of polycaprolactone and a proper amount of water. The adopted starch is biodegradable, rich in source, low in price and environment-friendly; lignin fiber has favorable flexibility and dispersability, and a three-dimensional network structure is formed after mixing, so that the supporting force and the durability of a film are enhanced, and the stability, the strength, the compactness and the uniformity of the film can be improved.

Description

A kind of lignocellulose-starch degradable thin film and preparation method thereof
Technical field
The present invention relates to thin film fabrication techniques field and in particular to a kind of lignocellulose-starch degradable thin film and its Preparation method.
Technical background
Flourishing with plastics industry, the environmental pollution that waste plastic film rubbish brings also is on the rise, white Pollution becomes the environmental problem attracted attention in the whole world.Therefore, people have to go into overdrive to develop biological degredation plastic thin film, Administer plastic refuse pollution problem brought to environment.
Starch is a kind of abundance, cheap natural macromolecular material, is also a kind of inexhaustible Renewable resource, it can be biodegradable in a variety of environmental conditions, and final catabolite carbon dioxide and water can pass through The photosynthesis recirculation of plant, will not cause any pollution to environment.Therefore, to be widely used in degradation plastic thin for starch The research of film and product development, and have been achieved for great progress.
Author Song little Li, in the preparation of starch-based degradable laminated film and performance study one literary composition, is gathered using starch, shell Sugar, glycerol, Paligorskite are prepared for a kind of starch-based degradable laminated film, and glycerol is starch film plasticizer, and Paligorskite changes The mechanical property of kind starch film, the starch-based degradable laminated film of preparation has good biodegradability.
Content of the invention
The technical problem to be solved is to provide a kind of process is simple, low production cost and environment amenable Lignocellulose-starch degradable thin film and preparation method thereof.
The technical problem to be solved to be realized using following technical scheme:
A kind of lignocellulose-starch degradable thin film is it is characterised in that it is prepared from by the raw material of following weight portion: beautiful 100 parts of rice starch, wheaten starch 8-10 part, lignin fibre 5-8 part, acetic acid sorbitol ester 1-2 part, nanoscale molybdenum oxide 3-4 part, Stearic amide 3-4 part, dmf 80-100 part, acetic anhydride 8-10 part, pyridine 100-120 part, diethylene glycol dimethyl ether 120-150 Part, sodium naphthalene solution 15-20 part, caprolactone 5-8 part, petroleum ether 200-300 part, oxolane 200-300 part, glycerol 5-8 part, poly- Caprolactone 5-8 part, appropriate amount of water.
A kind of lignocellulose-starch degradable thin film is it is characterised in that it is prepared from by following steps:
(1) wheaten starch is fully dry, then it is warmed up to 130-140 DEG C with dmf under conditions of stirring, keep 4-5h, cooling To 90-100 DEG C, Deca acetic anhydride and pyridine, continue to react 5-6h, cooling at 90-100 DEG C, are poured in cold water after dripping Precipitation, filters, washs to neutrality, be dried, be white powder material, i.e. starch acetate；
(2) equipped with agitator, the reactor of thermometer, reflux condensing tube and logical nitrogen device, add diethylene glycol dimethyl ether And starch acetate, being warmed up to 90-100 DEG C makes it dissolve fully, is then down to room temperature, adds naphthalene sodium molten under nitrogen protection Liquid, after reaction about 15-20min, adds caprolactone, reacts 10-12h at 110-130 DEG C, and product is carried out with 1/3 petroleum ether After precipitation more secondary with oxolane dissolving, remaining petroleum ether precipitation, be white solid thing after product is dry, i.e. caprolactone The starch of grafting；
(3) corn starch, the starch of caprolactone grafting, polycaprolactone, lignocellulose addition are equivalent to corn starch weight In the water of 10-12 times of part, ultrasonic disperse 20-30min；Add acetic acid sorbitol ester, nanoscale molybdenum oxide, stearic amide, 70-80 Gelatinizing 40-60min mechanical agitation at DEG C；Add 85-95 DEG C of glycerol to continue stirring 1-2h, be cast on pc resin plate, standing 15-20min, 3-3.5h is dried after 80-85 DEG C, be cooled to room temperature, take off film, obtaining a kind of lignocellulose-starch can drop Degrading film.
A kind of lignocellulose-starch degradable thin film is it is characterised in that the preparation method of described sodium naphthalene solution is: Naphthalene and metallic sodium are placed in oxolane, in room temperature and nitrogen protection lower reaction 10-12h, obtaining concentration is 0.8-1mol/l's Sodium naphthalene solution.
A kind of lignocellulose-starch degradable thin film it is characterised in that described dmf and pyridine using front all need through Cross anhydrous sodium sulfate to be dried.
The invention has the beneficial effects as follows: starch of the present invention can be biodegradable, and abundance, price are low Honest and clean, environmentally friendly；Lignocellulose has excellent pliability and dispersibility, forms tridimensional network after mixing, strengthens The support force of thin film and endurance, can improve stability, intensity, degree of compaction and the uniformity of thin film.Polycaprolactone can be made For binding agent and plasticizer, and in starch surface grafting caprolactone, effectively facilitate between polycaprolactone and starch uniform mix, Improve the mechanical property of thin film；Starch film intensity that the present invention is obtained is high, low cost and biodegradable, can effectively alleviate white Color pollution problem.
Specific embodiment
The lignocellulose of the present embodiment-starch degradable thin film, it is prepared from by the raw material of following weight portion: Semen Maydiss 100 parts of starch, 8 parts of wheaten starch, 5 parts of lignin fibre, 2 parts of acetic acid sorbitol ester, 3 parts of nanoscale molybdenum oxide, stearic amide 3 Part, 100 parts of dmf, 8 parts of acetic anhydride, 120 parts of pyridine, 150 parts of diethylene glycol dimethyl ether, 15 parts of sodium naphthalene solution, 5 parts of caprolactone, 300 parts of petroleum ether, 300 parts of oxolane, 5 parts of glycerol, 5 parts of polycaprolactone, appropriate amount of water.
The lignocellulose of the present embodiment-starch degradable thin film, it is prepared from by following steps:
(1) wheaten starch is fully dry, then it is warmed up to 130 DEG C with dmf under conditions of stirring, keep 4h, cool to 90 DEG C, Deca acetic anhydride and pyridine, continue to react 6h, cooling at 90 DEG C, are poured in cold water precipitation after dripping, filter, wash in Property, be dried, be white powder material, i.e. starch acetate；
(2) equipped with agitator, the reactor of thermometer, reflux condensing tube and logical nitrogen device, add diethylene glycol dimethyl ether And starch acetate, being warmed up to 90 DEG C makes it dissolve fully, is then down to room temperature, adds sodium naphthalene solution under nitrogen protection, instead Caprolactone should be added after about 20min, react 12h at 130 DEG C, after product is precipitated with 1/3 petroleum ether, then with tetrahydrochysene Furan dissolving, remaining petroleum ether precipitation are secondary, are white solid thing after product is dry, i.e. the starch of caprolactone grafting；
(3) corn starch, the starch of caprolactone grafting, polycaprolactone, lignocellulose addition are equivalent to corn starch weight In the water of 10 times of part, ultrasonic disperse 30min；Add acetic acid sorbitol ester, nanoscale molybdenum oxide, stearic amide, gelatinizing at 80 DEG C 60min mechanical agitation；Add 95 DEG C of glycerol to continue stirring 2h, be cast on pc resin plate, stand 20min, after 85 DEG C 3h is dried, is cooled to room temperature, take off film, obtain a kind of lignocellulose-starch degradable thin film.
After tested, the lignocellulose of the present embodiment-starch degradable thin film tensile strength is more than 30mpa, extension at break Rate is more than 150%, and light transmittance is more than 90%, and thin film both sides temperature difference is more than 5 DEG C.

Claims (4)

1. a kind of lignocellulose-starch degradable thin film is it is characterised in that it is prepared from by the raw material of following weight portion: 100 parts of corn starch, wheaten starch 8-10 part, lignin fibre 5-8 part, acetic acid sorbitol ester 1-2 part, nanoscale molybdenum oxide 3-4 Part, stearic amide 3-4 part, dmf 80-100 part, acetic anhydride 8-10 part, pyridine 100-120 part, diethylene glycol dimethyl ether 120- 150 parts, sodium naphthalene solution 15-20 part, caprolactone 5-8 part, petroleum ether 200-300 part, oxolane 200-300 part, glycerol 5-8 Part, polycaprolactone 5-8 part, appropriate amount of water.
2. a kind of lignocellulose-starch degradable thin film is it is characterised in that it is prepared from by following steps:
Wheaten starch is fully dry, then it is warmed up to 130-140 DEG C with dmf under conditions of stirring, keep 4-5h, cool to 90-100 DEG C, Deca acetic anhydride and pyridine, continue to react 5-6h, cooling at 90-100 DEG C, it is heavy to be poured in cold water after dripping Form sediment, filter, wash to neutrality, be dried, be white powder material, i.e. starch acetate；
Equipped with agitator, the reactor of thermometer, reflux condensing tube and logical nitrogen device, add diethylene glycol dimethyl ether and shallow lake Powder acetass, being warmed up to 90-100 DEG C makes it dissolve fully, is then down to room temperature, adds sodium naphthalene solution under nitrogen protection, instead Caprolactone should be added after about 15-20min, react 10-12h at 110-130 DEG C, product is precipitated with 1/3 petroleum ether Afterwards, more secondary with oxolane dissolving, remaining petroleum ether precipitation, be white solid thing after product is dry, i.e. caprolactone grafting Starch；
Corn starch, the starch of caprolactone grafting, polycaprolactone, lignocellulose addition are equivalent to corn starch weight portion In 10-12 times of water, ultrasonic disperse 20-30min；Addition acetic acid sorbitol ester, nanoscale molybdenum oxide, stearic amide, 70-80 DEG C Lower gelatinizing 40-60min mechanical agitation；Add 85-95 DEG C of glycerol to continue stirring 1-2h, be cast on pc resin plate, stand 15- 20min, 3-3.5h is dried after 80-85 DEG C, be cooled to room temperature, take off film, obtain a kind of lignocellulose-starch degradable thin Film.
3. a kind of lignocellulose-starch degradable thin film is it is characterised in that the preparation method of described sodium naphthalene solution is: will Naphthalene and metallic sodium are placed in oxolane, in room temperature and nitrogen protection lower reaction 10-12h, obtain the naphthalene that concentration is 0.8-1mol/l Sodium solution.
4. a kind of lignocellulose-starch degradable thin film it is characterised in that described dmf and pyridine using front all need through Anhydrous sodium sulfate is dried.
CN201610761159.4A 2016-08-30 2016-08-30 Lignocellulose starch degradable film and preparation method thereof Pending CN106366354A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108276715A (en) * 2018-01-30 2018-07-13 安徽省厚博生态农业有限公司 A kind of degradable Multifunctional agricultural thin film and preparation method thereof
CN113249820A (en) * 2021-06-04 2021-08-13 东华大学 Preparation method of cellulose/starch composite fiber
CN114085497A (en) * 2021-10-29 2022-02-25 苏州星火丰盈环保包装有限公司 Bio-based fully-degradable film and preparation method thereof
CN114874503A (en) * 2022-06-20 2022-08-09 无锡学院 Cellulose-reinforced starch-based biodegradable mulching film and preparation method thereof

Citations (2)

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CN105885116A (en) * 2016-06-24 2016-08-24 安徽德琳环保发展（集团）有限公司 Polylactic acid-caprolactone-starch extrusion blown film and preparation method thereof
CN105885114A (en) * 2016-06-24 2016-08-24 安徽德琳环保发展（集团）有限公司 Silica-enhanced caprolactone-starch degradable thin film and preparation method thereof

Patent Citations (2)

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CN105885116A (en) * 2016-06-24 2016-08-24 安徽德琳环保发展（集团）有限公司 Polylactic acid-caprolactone-starch extrusion blown film and preparation method thereof
CN105885114A (en) * 2016-06-24 2016-08-24 安徽德琳环保发展（集团）有限公司 Silica-enhanced caprolactone-starch degradable thin film and preparation method thereof

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108276715A (en) * 2018-01-30 2018-07-13 安徽省厚博生态农业有限公司 A kind of degradable Multifunctional agricultural thin film and preparation method thereof
CN113249820A (en) * 2021-06-04 2021-08-13 东华大学 Preparation method of cellulose/starch composite fiber
CN113249820B (en) * 2021-06-04 2022-07-29 东华大学 Preparation method of cellulose/starch composite fiber
CN114085497A (en) * 2021-10-29 2022-02-25 苏州星火丰盈环保包装有限公司 Bio-based fully-degradable film and preparation method thereof
CN114874503A (en) * 2022-06-20 2022-08-09 无锡学院 Cellulose-reinforced starch-based biodegradable mulching film and preparation method thereof

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