WO2022027603A1 - Film mince antibactérien biodégradable à base de pva/amidon et son procédé de préparation - Google Patents

Film mince antibactérien biodégradable à base de pva/amidon et son procédé de préparation Download PDF

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Publication number
WO2022027603A1
WO2022027603A1 PCT/CN2020/107847 CN2020107847W WO2022027603A1 WO 2022027603 A1 WO2022027603 A1 WO 2022027603A1 CN 2020107847 W CN2020107847 W CN 2020107847W WO 2022027603 A1 WO2022027603 A1 WO 2022027603A1
Authority
WO
WIPO (PCT)
Prior art keywords
pva
starch
antibacterial
biodegradable film
parts
Prior art date
Application number
PCT/CN2020/107847
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English (en)
Chinese (zh)
Inventor
陈昌平
Original Assignee
南京五瑞生物降解新材料研究院有限公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 南京五瑞生物降解新材料研究院有限公司 filed Critical 南京五瑞生物降解新材料研究院有限公司
Priority to AU2020227119A priority Critical patent/AU2020227119A1/en
Priority to PCT/CN2020/107847 priority patent/WO2022027603A1/fr
Publication of WO2022027603A1 publication Critical patent/WO2022027603A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D7/00—Producing flat articles, e.g. films or sheets
    • 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

Definitions

  • the invention relates to an antibacterial PVA/starch biodegradable film and a preparation method thereof, belonging to the field of degradable plastics.
  • biodegradable materials have become the focus of research in the field of packaging materials.
  • the PVA/starch mixture has high cost performance and moderate mechanical strength, excellent gas barrier properties to oxygen and nitrogen, and good water solubility, and is currently a research hotspot of biodegradable materials.
  • due to the presence of a large number of hydroxyl groups in the side chains of PVA/starch it has hygroscopicity and extremely poor moisture resistance, which cannot prevent the inner packaging product from being polluted by the external environment, and its use is limited.
  • the purpose of the present invention is to provide an antibacterial PVA/starch biodegradable film with good waterproof performance and antibacterial performance.
  • An antibacterial PVA/starch biodegradable film is prepared from the following raw materials by weight:
  • modified starch Preferably, 10-20 parts of modified starch are also included, and the modified starch is oxidized starch or hydroxypropyl starch.
  • the crosslinking modifier is an aziridine crosslinking agent.
  • the antibacterial agent is castor oil, eucalyptus oil or cinnamon oil.
  • the plasticizer is glycerin or epoxidized soybean oil.
  • the present invention also discloses the preparation method of the above-mentioned antibacterial PVA/starch biodegradable film, and its steps include:
  • step (2) take the PLA granules and the PVA/starch granules of step (1) in proportion, put them into a mixer and mix them, then extrude them with a single screw, and then blow them into a film.
  • the stirring speed of PVA is 800rpm, and the time is 25min, the stirring speed of starch is 800rpm, and the time is 20min, the temperature of the twin-screw extrusion is 165 °C, the rotation speed of the screw is 380r/min, and the pressure of the die head is 5MPa. .
  • the extrusion temperature of the single screw is 180°C
  • the blowing temperature is 210°C
  • the film thickness is 0.03 mm.
  • the present invention adds plasticizer, PLA, crosslinking modifier and antibacterial agent to PVA/starch material.
  • the aziridine cross-linking agent can generate cross-linking, reduce the hydroxyl group of the side chain, and improve the water resistance of the material.
  • the addition of plasticizer can effectively improve the mechanical properties of PVA/starch films.
  • the addition of PLA can reduce the alcoholysis degree of PVA and improve the toughness and waterproof performance of PVA/starch film. Adding antibacterial agents makes the product have good antibacterial properties.
  • the film prepared by the invention has good mechanical properties, air tightness, waterproof performance, and antibacterial properties, and after being discarded, it is automatically degraded under natural conditions, reducing the pressure of environmental pollution, and can be applied to many an occasion.
  • the antibacterial PVA/starch biodegradable film is prepared from the following raw materials by weight:
  • the antibacterial PVA/starch biodegradable film is prepared from the following raw materials by weight:
  • the antibacterial PVA/starch biodegradable film is prepared from the following raw materials by weight:
  • the antibacterial PVA/starch biodegradable film is prepared from the following raw materials by weight:
  • the preparation method of embodiment 1-4 is:
  • (1) add the crosslinking modifier and half of the plasticizer to the PVA, stir at a high speed, the stirring speed is 800rpm, the time is 25min, and dry; add the remaining plasticizers and antibacterial agents to the starch, stir at a high speed, and stir
  • the speed is 800rpm, the time is 20min, dried, put into a mixer and mixed with twin-screw extrusion granulation, the extrusion temperature is 165 °C, the screw rotation speed is 380r/min, and the die pressure is 5MPa;
  • step (2) take the PLA granules and the PVA/starch granules of step (1) in proportion, put them into the mixer and extrude with a single screw after mixing, the extrusion temperature is 180 ° C, and then blow molding into a film, the blow molding temperature is 210 °C, the film thickness is 0.03mm.
  • Table 1 The film performance testing data of Examples 1-4

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Biological Depolymerization Polymers (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Film mince antibactérien biodégradable à base de PVA/amidon qui est préparé à l'aide des matières premières suivantes, en parties en poids : 100 parties de PVA, 50 à 80 parties d'amidon, 30 à 42 parties d'un plastifiant, 12 à 18 parties de PLA, 5 à 10 parties d'un modificateur de réticulation et 3 à 7 parties d'un agent antibactérien. Est également divulgué un procédé de préparation correspondant. Grâce à un dosage approprié des matières premières, le film mince préparé présente de bonnes propriétés mécaniques, une bonne étanchéité à l'air, une bonne résistance à l'eau et de bonnes propriétés antibactériennes, et il peut être automatiquement dégradé dans des conditions naturelles après avoir été jeté, si bien que la pression en matière de pollution environnementale est atténuée, et l'invention peut être appliquée en diverses occasions.
PCT/CN2020/107847 2020-08-07 2020-08-07 Film mince antibactérien biodégradable à base de pva/amidon et son procédé de préparation WO2022027603A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2020227119A AU2020227119A1 (en) 2020-08-07 2020-08-07 Antibacterial PVA/starch biodegradable thin film and preparation method thereof
PCT/CN2020/107847 WO2022027603A1 (fr) 2020-08-07 2020-08-07 Film mince antibactérien biodégradable à base de pva/amidon et son procédé de préparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/107847 WO2022027603A1 (fr) 2020-08-07 2020-08-07 Film mince antibactérien biodégradable à base de pva/amidon et son procédé de préparation

Publications (1)

Publication Number Publication Date
WO2022027603A1 true WO2022027603A1 (fr) 2022-02-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/107847 WO2022027603A1 (fr) 2020-08-07 2020-08-07 Film mince antibactérien biodégradable à base de pva/amidon et son procédé de préparation

Country Status (2)

Country Link
AU (1) AU2020227119A1 (fr)
WO (1) WO2022027603A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101250765A (zh) * 2007-02-25 2008-08-27 东丽纤维研究所（中国）有限公司 一种高耐水解性聚乳酸纤维制品
CN101323678A (zh) * 2008-07-30 2008-12-17 石家庄普莱斯环保材料科技有限公司 一种全生物降解塑料薄膜
JP2015039870A (ja) * 2013-08-23 2015-03-02 帝人株式会社 複合フィルムおよびその製造方法
CN104530486A (zh) * 2014-12-16 2015-04-22 天津市凯旋塑料制品有限公司 一种生物降解塑料薄膜
CN110564089A (zh) * 2019-10-12 2019-12-13 青海益洁生物工程有限公司 一种可降解薄膜及制备方法
CN110845832A (zh) * 2019-10-21 2020-02-28 刘辉 一种卫生用品内包装的生物降解薄膜

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101250765A (zh) * 2007-02-25 2008-08-27 东丽纤维研究所（中国）有限公司 一种高耐水解性聚乳酸纤维制品
CN101323678A (zh) * 2008-07-30 2008-12-17 石家庄普莱斯环保材料科技有限公司 一种全生物降解塑料薄膜
JP2015039870A (ja) * 2013-08-23 2015-03-02 帝人株式会社 複合フィルムおよびその製造方法
CN104530486A (zh) * 2014-12-16 2015-04-22 天津市凯旋塑料制品有限公司 一种生物降解塑料薄膜
CN110564089A (zh) * 2019-10-12 2019-12-13 青海益洁生物工程有限公司 一种可降解薄膜及制备方法
CN110845832A (zh) * 2019-10-21 2020-02-28 刘辉 一种卫生用品内包装的生物降解薄膜

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AU2020227119A1 (en) 2022-02-24

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