Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multifunctional polyvinyl alcohol nano composite material and preparation method thereof

A nanocomposite material, polyvinyl alcohol technology, applied in nanotechnology and other directions, can solve the problems of pure polyvinyl alcohol antibacterial and ultraviolet shielding limitations, and achieve the effects of excellent ultraviolet shielding performance, high yield and simple preparation process

Active Publication Date: 2021-12-17
GUILIN UNIVERSITY OF TECHNOLOGY
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the natural disadvantages of pure polyvinyl alcohol in terms of antibacterial and ultraviolet shielding, its practical application is limited to a certain extent.

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
  • Multifunctional polyvinyl alcohol nano composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Preparation of modified cellulose nanocrystals: disperse 4 mass parts of cellulose nanocrystals in 765 mass parts, deionized water-DMF composite solvent with a mass ratio of 100:665, add 6 mass parts cobalt nitrate, after stirring for 30min to mix uniformly, then add 4 parts by mass of aminotrimethylene phosphoric acid, stir for 40min to mix uniformly, then transfer the obtained uniform dispersion to the reactor for solvothermal reaction, the solvothermal reaction temperature is 140°C, reaction time 24h, cooling after solvothermal reaction, centrifugation, washing, and drying to obtain modified cellulose nanocrystals for later use;

[0019] (2) Preparation of film-forming liquid: disperse the modified cellulose nanocrystals of 1 mass part in 3000 mass parts of deionized water, add 100 mass parts of polyvinyl alcohol to the dispersion, heat to 85 ° C, stir Mix evenly for 2 hours, then cool down to room temperature, remove air bubbles with ultrasound, and obtain a uni...

Embodiment 2

[0022] (1) Preparation of modified cellulose nanocrystals: disperse 4 mass parts of cellulose nanocrystals in 765 mass parts, deionized water-DMF composite solvent with a mass ratio of 100:665, add 6 mass parts cobalt nitrate, after stirring for 30min to mix uniformly, then add 4 parts by mass of aminotrimethylene phosphoric acid, stir for 40min to mix uniformly, then transfer the obtained uniform dispersion to the reactor for solvothermal reaction, the solvothermal reaction temperature is 140°C, reaction time 24h, cooling after solvothermal reaction, centrifugation, washing, and drying to obtain modified cellulose nanocrystals for later use;

[0023] (2) Preparation of film-forming liquid: disperse 3 mass parts of modified cellulose nanocrystals in 3000 mass parts of deionized water, add 100 mass parts of polyvinyl alcohol to the dispersion, heat to 85 ° C, stir Mix evenly for 2 hours, then cool down to room temperature, remove air bubbles with ultrasound, and obtain a unifor...

Embodiment 3

[0026] (1) Preparation of modified cellulose nanocrystals: disperse 4 mass parts of cellulose nanocrystals in 765 mass parts, deionized water-DMF composite solvent with a mass ratio of 100:665, add 6 mass parts cobalt nitrate, after stirring for 30min to mix uniformly, then add 4 parts by mass of aminotrimethylene phosphoric acid, stir for 40min to mix uniformly, then transfer the obtained uniform dispersion to the reactor for solvothermal reaction, the solvothermal reaction temperature is 140°C, reaction time 24h, cooling after solvothermal reaction, centrifugation, washing, and drying to obtain modified cellulose nanocrystals for later use;

[0027] (2) Preparation of film-forming liquid: disperse the modified cellulose nanocrystals of 5 parts by mass in deionized water of 3000 parts by mass, add 100 parts by mass of polyvinyl alcohol to the dispersion, heat to 85 ° C, stir Mix evenly for 2 hours, then cool down to room temperature, remove air bubbles with ultrasound, and ob...

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
diameteraaaaaaaaaa
lengthaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of polymer composite materials, and relates to a multifunctional polyvinyl alcohol nano composite material and a preparation method thereof. The multifunctional polyvinyl alcohol nano composite material is prepared from the following raw materials: polyvinyl alcohol and modified cellulose nanocrystals. The invention also provides a preparation method of the multifunctional polyvinyl alcohol nano composite material. The prepared multifunctional polyvinyl alcohol nano composite material has excellent ultraviolet shielding performance, antibacterial performance, ammonia response performance, mechanical performance, water vapor permeability and thermal stability. Meanwhile, high optical transparency can be kept, the preparation process is simple, environmentally friendly and low in cost, and the multifunctional polyvinyl alcohol nano composite material is suitable for large-scale production, and has good application prospects in the fields of packaging, ultraviolet protection and the like.

Description

technical field [0001] The invention belongs to the technical field of polymer composite materials, and in particular relates to a multifunctional polyvinyl alcohol nano composite material and a preparation method thereof. Background technique [0002] As the most abundant biomass resource on the earth, natural cellulose is a biological resource widely distributed in nature, and exists in various organisms such as plants and some other carriers. Cellulose nanocrystals are a kind of nanoscale material extracted from natural fibers. They have the excellent characteristics of nanomaterials and cellulose, such as high mechanical strength, amphiphilicity, optical activity, and various surface modifications. Because the surface contains a large number of carboxyl groups, it can be widely used in drug sustained release, pharmaceutical excipients, hand-shaped liquid crystal materials, anti-counterfeiting materials, etc., and has attracted extensive attention from researchers in diff...

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): C08L29/04C08L1/04C08J5/18C08B15/06B82Y40/00
CPCC08J5/18C08B15/06B82Y40/00C08J2329/04C08J2401/04
Inventor 唐群武经纬冯少雄张焱吴同发
Owner GUILIN UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com