Supercharge Your Innovation With Domain-Expert AI Agents!

Super-hydrophobic biological composite membrane, preparation method and application thereof

A biocomposite film and super-hydrophobic technology, applied in applications, chemical instruments and methods, household packaging, etc., can solve the problems of super-hydrophobic material surface easy to quickly restore hydrophilicity, long preparation process, and toxic solvents

Active Publication Date: 2021-09-10
QINGDAO AGRI UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese invention patent CN111962049A uses the method of plasma chemical vapor deposition to prepare nano-superhydrophobic coatings. This method is economical and effective, but the surface of superhydrophobic materials is easy to quickly restore hydrophilicity.
Chinese invention patent CN110714271A uses electrospinning to prepare PDMS-PMMA superhydrophobic membrane, but the solvents required for electrospinning are generally toxic, and the preparation process is long, so it is not suitable for promotion as food packaging materials

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
  • Super-hydrophobic biological composite membrane, preparation method and application thereof
  • Super-hydrophobic biological composite membrane, preparation method and application thereof
  • Super-hydrophobic biological composite membrane, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The invention provides a method for preparing a superhydrophobic biocomposite film, comprising the following steps:

[0029] Coating the chitosan solution on the surface of the carrier to form a chitosan film layer;

[0030] Casting a sodium phytate solution on the surface of the chitosan film layer to form a sodium phytate layer;

[0031] Alternately repeating the processes of coating chitosan solution and casting sodium phytate solution, and then assembling layer by layer to obtain chitosan sodium phytate composite film;

[0032] First soak the chitosan sodium phytate composite film in the ZnO nanoparticle dispersion, after the first drying, soak the gained composite film in the stearic acid solution for the second time, and perform the second drying, alternately The process of first soaking-first drying and second soaking-second drying is repeated to obtain a super-hydrophobic biocomposite film.

[0033] Unless otherwise specified, the present invention has no spec...

Embodiment 1

[0063] Take by weighing 3g chitosan and be dissolved in the acetic acid solution of 100mL 2%Vol (2mL anhydrous acetic acid is mixed with 100mL water to obtain), obtain the chitosan solution of 3wt.%; Take by weighing 1g sodium phytate and dissolve in 100mL water, obtain 1wt.% sodium phytate solution; 3mL chitosan solution is evenly coated on the surface of the glass slide to form a chitosan film layer, and then 1mL1wt% sodium phytate solution is cast on the surface of the chitosan film layer to form sodium phytate Repeat the process of coating chitosan solution and casting sodium phytate solution 9 times alternately, assemble layer by layer, dry the obtained composite film in an oven at 60°C overnight until the chitosan sodium phytate composite film is completely dry, and obtain Chitosan sodium phytate composite film, wherein chitosan film layer 5 layers, sodium phytate layer 4 layers (the thickness of each layer of chitosan film layer is 7 μm, the thickness of each layer of so...

Embodiment 2

[0067] The 0.63wt.% ZnO nanoparticle dispersion in Example 1 was replaced by 1.26wt.% ZnO nanoparticle dispersion, and the rest were the same as in Example 1.

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
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of super-hydrophobic materials, and particularly relates to a super-hydrophobic biological composite membrane, a preparation method and application thereof. According to the invention, a layer-by-layer assembly technology is adopted to prepare a chitosan sodium phytate composite membrane, and the chitosan sodium phytate composite membrane is alternately soaked in a ZnO nano-particle dispersion solution and a stearic acid solution to prepare the super-hydrophobic biological composite membrane; and due to micro-nano scale roughness caused by a ZnO micro-nano structure and a synergistic effect generated by low surface free energy caused by stearic acid chemical modification,the super-hydrophobic biological composite membrane prepared by the preparation method has excellent super-hydrophobic performance and good self-cleaning performance,is degradable and free of toxic and side effects, and can be used as a liquid food packaging material.

Description

technical field [0001] The invention belongs to the technical field of superhydrophobic materials. The invention relates to a superhydrophobic biocomposite membrane, a preparation method and application thereof. Background technique [0002] In daily life, viscous yogurt, jam, milk, honey and other liquid foods tend to stick to the container, resulting in waste, and the best way to avoid liquid food waste is to coat the inner wall of the container with a layer of superhydrophobic material. However, most of the current superhydrophilic and superhydrophobic coatings are fluorocarbon materials, which are not ideal in wear resistance, expensive, difficult to degrade, inedible, and easy to cause environmental pollution. Therefore, it is imminent to develop a biodegradable and environmentally friendly biopolymer material, and the preparation of biopolymer films has become a research hotspot. [0003] At present, the preparation methods of superhydrophobic materials include plasm...

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
IPC IPC(8): B32B9/00B32B9/04B32B33/00B32B37/00B32B37/15B32B38/08B65D65/40
CPCB32B9/00B32B9/04B32B33/00B32B37/00B32B37/15B32B38/08B65D65/40B32B2037/243B32B2260/02B32B2260/04B32B2255/26B32B2307/73B32B2307/716B32B2439/70Y02A40/90
Inventor 孙庆杰于萌婷贾若玉代蕾姬娜周历阳熊柳王燕斐
Owner QINGDAO AGRI UNIV
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