Polymer-modified nano-lecithin composite material and preparation method thereof

A composite material and polymer technology, which is applied in the field of polymer-modified nano lecithin composite material and its preparation, can solve the problems of composite material instability and easy oxidation, and achieve easy processing and operation, low cost, high mechanical performance and Good barrier performance

Active Publication Date: 2017-02-01
JIANGNAN UNIV
View PDF3 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the molecular structure of unmodified soybean lecithin contains unsaturated double bonds, which are easy to oxidize and cause the composite material to be unstable, so it needs to be modified

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of modified nano soybean lecithin:

[0032] a. Take 9 parts of soybean lecithin, dissolve it in 20 parts of absolute ethanol in a 60°C water bath, and pour the liquid into 20 parts of phosphate buffer (pH 6.8) under stirring conditions to obtain a crude lipid dispersion. Put the crude lipid dispersion into a microfluidizer, and conduct micronization treatment 5 times under the conditions of 200MPa and 80°C. The liposome ultrafine dispersion is filtered through a 0.24 μm microporous membrane, and the filtrate is freeze-dried at minus 40°C to obtain powdered nano soybean lecithin;

[0033] B, get the nano soybean lecithin prepared in step a and dissolve in 15 parts of toluene, add 0.6 part of immobilized lipase, after stirring for 15 min, add 10 parts of hydrogen peroxide solution with a mass fraction of 40% at a rate of 60 μL / min, Use a magnetic stirrer at 35°C for 8 hours at a speed of 2000r / min;

[0034] c. Take the reaction solution obtained in step ...

Embodiment 2

[0040] (1) Preparation of modified nano soybean lecithin:

[0041] a. Take 10 parts of soybean lecithin, dissolve it in 30 parts of absolute ethanol in a water bath at 80°C, and pour the liquid into 30 parts of phosphate buffer solution (pH 7.5) under stirring conditions to obtain a crude lipid dispersion, Add the crude lipid dispersion into a microfluidizer, and conduct micronization treatment 5 times under the conditions of 150MPa and 60°C. The liposome ultrafine dispersion is filtered through a 0.20 μm microporous membrane, and the filtrate is freeze-dried at minus 50°C to obtain powdered nano soybean lecithin;

[0042] b. Dissolve the nano-soybean lecithin prepared in step a in 13 parts of toluene, add 1.2 parts of immobilized lipase, and stir for 20 minutes, then add 1 part of hydrogen peroxide solution with a mass fraction of 60% at a rate of 80 μL / min. Continue to stir the reaction with a magnetic stirrer at ℃ for 8 hours, and the rotation speed is 2500r / min;

[0043]...

Embodiment 3

[0049] (1) Preparation of modified nano soybean lecithin:

[0050] a. Take 10 parts of soybean lecithin, dissolve it in 25 parts of absolute ethanol in a water bath at 60°C, and pour the liquid into 20 parts of phosphate buffer solution (pH 7.4) under stirring conditions to obtain a crude lipid dispersion. Put the crude lipid dispersion into a microfluidizer, and micronize it four times under the conditions of 200MPa and 80°C. The liposome ultrafine dispersion is filtered through a 0.24 μm microporous membrane, and the filtrate is freeze-dried at minus 45°C to obtain powdered nano soybean lecithin;

[0051] B, get the nano soybean lecithin prepared in step a and dissolve in 20 parts of toluene, add 1.5 parts of immobilized lipase, after stirring for 20min, add 5 parts of hydrogen peroxide solution with a mass fraction of 50% at a rate of 60 μL / min, in Continue to stir the reaction with a magnetic stirrer at 35°C for 8 hours, and the rotation speed is 2000r / min;

[0052] c. T...

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

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
tensile strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to a polymer-modified nano-lecithin composite material and a preparation method thereof, and belongs to the technical field of functional package materials. The polymer-modified nano-lecithin composite material is prepared by taking modified nano-lecithin serving as a plasticizer, adding a cross-linking agent, taking polyethylene or polypropylene as a base material, and performing blow moulding and film forming. A polyethylene composite film with high stability, high barrier property (that is, the oxygen and water vapour barrier properties are improved) and high mechanical properties (that is, the tensile strength and the breaking elongation are remarkably improved) is obtained; moreover, the used plasticizer is the green and natural soybean lecithin, and is harmless to human body health; the prepared thin film can be widely applied to the fields of food package and medicinal package.

Description

technical field [0001] The invention relates to a polymer-modified nano lecithin composite material and a preparation method thereof, belonging to the technical field of functional packaging materials. Background technique [0002] Polyethylene (PE) and polypropylene (PP) plastics are plastics with wide application, low cost, and excellent performance, but they have disadvantages such as low strength, easy deformation, and relatively poor barrier properties. Ethylene and polypropylene application range. In order to expand the application range of polyethylene and polypropylene and improve their comprehensive performance, it is necessary to modify polyethylene or polypropylene or add functional auxiliary materials with special properties to improve the performance of polyethylene or polypropylene. The performance of polyethylene or polypropylene and nano-materials after compounding is improved, and the processing performance is excellent, so the market prospect is broad. ...

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): C08L23/06C08L23/12C08K13/06C08K9/04C08K5/521C08K5/14C08K5/5415
CPCC08K5/14C08K5/521C08K5/5415C08K9/08C08K13/06C08K2201/011C08K2201/014C08L2201/10C08L23/06C08L23/12
Inventor 王利强刘晓伟马淑凤周丹林炎宋会民张贺张晨凤薛家蓉赵婉怡
Owner JIANGNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap