Supercharge Your Innovation With Domain-Expert AI Agents!

Preparation method of biodegradable agricultural mulching film with bactericidal property

A technology of biodegradable and agricultural mulch, which is applied in the field of preparation of biodegradable agricultural mulch, can solve the problems of endangering human health, Escherichia coli, Staphylococcus aureus pollution, etc. Effect

Active Publication Date: 2018-08-03
SHAANXI UNIV OF SCI & TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the Escherichia coli and Staphylococcus aureus contained in the soil have certain pollution to agricultural products, which are likely to further endanger human health.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of biodegradable agricultural mulching film with bactericidal property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the first step, PBS is dissolved in chloroform and precipitated in industrial alcohol to obtain purified PBS. Take 20 parts by mass of the purified PBS, and 5 parts of 2,3-epoxypropyl trimethyl chloride Ammonium was added to 150 parts of chloroform and stirred at 55°C for 24 hours;

[0019] In the second step, pour the reaction product into distilled water while it is hot and wash it with water for 3 times to remove unreacted 2,3-epoxypropyltrimethylammonium chloride, let it stand for liquid separation, remove the solution, and pour the precipitate into industrial alcohol Precipitate and purify in , and put the purified modified product into a vacuum oven at 40°C for drying to obtain the final quaternized PBS product, and then form a film.

Embodiment 2

[0021] In the first step, PBS is dissolved in chloroform and precipitated in industrial alcohol to obtain purified PBS. Take 20 parts by mass of the purified PBS, and 3 parts of 2,3-epoxypropyl trimethyl chloride Add ammonium to 130 parts of chloroform and react at 35°C for 18 hours while stirring;

[0022] In the second step, pour the reaction product into distilled water while it is hot and wash it with water for 3 times to remove unreacted 2,3-epoxypropyltrimethylammonium chloride, let it stand for liquid separation, remove the solution, and pour the precipitate into industrial alcohol Precipitate and purify in , and put the purified modified product into a vacuum oven at 40°C for drying to obtain the final quaternized PBS product, and then form a film.

Embodiment 3

[0024] In the first step, PBS is dissolved in chloroform and precipitated in industrial alcohol to obtain purified PBS. Take 20 parts of purified PBS in parts by mass, and 2 parts of 2,3-epoxypropyl trimethyl chloride Ammonium was added to 100 parts of chloroform and stirred at 45°C for 21 hours;

[0025] In the second step, pour the reaction product into distilled water while it is hot and wash it with water for 3 times to remove unreacted 2,3-epoxypropyltrimethylammonium chloride, let it stand for liquid separation, remove the solution, and pour the precipitate into industrial alcohol Precipitate and purify in , and put the purified modified product into a vacuum oven at 40°C for drying to obtain the final quaternized PBS product, and then form a film.

[0026] The bactericidal and antibacterial ability of the biodegradable agricultural mulch film with bactericidal performance prepared by the present invention is tested by the bacteriostatic zone test method, and after the p...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A preparation method of a biodegradable agricultural mulching film with a bactericidal property comprises the steps: firstly, dissolving purified PBS and 2,3-epoxypropyl trimethyl ammonium chloride inchloroform, then rising the temperature, and thus obtaining a quaternized PBS modified material by a reaction of PBS terminal groups; washing the modified material with distilled water, and precipitating and purifying in industrial alcohol; putting the purified modified material into a 40 DEG C vacuum drying oven, drying for 24 hours, and thus obtaining the final product. The product has the mechanical and thermal properties of PBS increased, and the modified PBS has the bactericidal property due to addition of the cationic bactericide 2,3-epoxypropyl trimethyl ammonium chloride, so the usable range of the biodegradable material is broadened and the development trend of modern macromolecular chemicals is met .

Description

technical field [0001] The invention relates to the field of agricultural mulch production, in particular to a method for preparing a biodegradable agricultural mulch with bactericidal properties. Background technique [0002] In recent years, biodegradable agricultural mulch has become one of the research hotspots, and there are a large number of documents, patents and corresponding products at home and abroad. Due to its good biodegradability, biodegradable materials have been widely promoted and applied in the field of agricultural mulch instead of ordinary plastic mulch, among which polybutylene succinate (PBS) is the aliphatic polyester that people are paying more attention to at present. Biodegradable polymer materials. PBS is a typical semi-crystalline thermoplastic with good biodegradability, excellent mechanical properties and easy processing. It is widely used in agriculture and other fields. [0003] However, Escherichia coli and Staphylococcus aureus contained ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/91C08L67/02
CPCC08G63/916C08L67/02
Inventor 王蕾张敏
Owner SHAANXI UNIV OF SCI & TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com