Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Kapok nanocellulose aerogel as well as preparation method and application thereof

A technology of nano-cellulose and kapok fiber, applied in the direction of airgel preparation, separation methods, chemical instruments and methods, etc., can solve environmental pollution caused by cellulose airgel reusability, complex cellulose extraction methods, oily liquid Complicated recovery steps and other issues, to achieve good lipophilicity and hydrophobicity, good hydrophobic effect, and reduce production costs

Active Publication Date: 2021-09-24
DONGHUA UNIV
View PDF7 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the extraction method of cellulose is complicated, the price of raw materials is still relatively high, it is easy to cause pollution to the environment, and the reusability of cellulose airgel is poor, the oil recovery steps are complicated, and it is easy to cause secondary pollution after adsorption

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
  • Kapok nanocellulose aerogel as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a preparation method of kapok nanocellulose airgel adsorption material, the kapok nanocellulose obtained after microfibrillation and homogenization treatment is configured into a uniform suspension, and the pH of the solution is adjusted between 3 and Between 4 and 4, a silane coupling agent was added for hydrophobic modification, and kapok nanocellulose airgel was prepared by freeze-drying after freezing. The specific operation steps are as follows:

[0028] Step 1, the extraction of kapok nanocellulose:

[0029] Put the kapok fiber into 10wt% NaOH solution, treat at 80°C for 1h to remove impurities such as wax on the surface of the kapok fiber, then rinse off the lye on the fiber with deionized water; then use a beater to process the kapok fiber beating treatment to obtain kapok fiber pulp; then put the kapok pulp into a high-pressure homogenizer for homogenization treatment to obtain kapok nanocellulose. Take a cellulose solution with a kap...

Embodiment 2

[0036] This embodiment provides a preparation method of kapok nanocellulose airgel adsorption material, the kapok nanocellulose obtained after microfibrillation and homogenization treatment is configured into a uniform suspension, and the pH of the solution is adjusted between 3 and Between 4 and 4, a silane coupling agent was added for hydrophobic modification, and kapok nanocellulose airgel was prepared by freeze-drying after freezing. The specific operation steps are as follows:

[0037] Step 1, the extraction of kapok nanocellulose:

[0038] Put the kapok fiber into 10wt% NaOH solution, treat at 80°C for 1h to remove the wax on the surface of the kapok fiber, then rinse off the lye on the fiber with deionized water; then use a beater to beat the kapok fiber The kapok fiber pulp is obtained; and then the kapok pulp is put into a high-pressure homogenizer for homogenization treatment to obtain kapok nanocellulose. Take a cellulose solution with a kapok nanocellulose conten...

Embodiment 3

[0045]This embodiment provides a preparation method of kapok nanocellulose airgel adsorption material, the kapok nanocellulose obtained after microfibrillation and homogenization treatment is configured into a uniform suspension, and the pH of the solution is adjusted between 3 and Between 4 and 4, a silane coupling agent was added for hydrophobic modification, and kapok nanocellulose airgel was prepared by freeze-drying after freezing. The specific operation steps are as follows:

[0046] Step 1, the extraction of kapok nanocellulose:

[0047] Put the kapok fiber into 10wt% NaOH solution, treat at 80°C for 1h to remove the wax on the surface of the kapok fiber, then rinse off the lye on the fiber with deionized water; then use a beater to beat the kapok fiber The kapok fiber pulp is obtained; and then the kapok pulp is put into a high-pressure homogenizer for homogenization treatment to obtain kapok nanocellulose. Take a cellulose solution with a kapok nanocellulose content...

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
Densityaaaaaaaaaa
Densityaaaaaaaaaa
Contact angleaaaaaaaaaa
Login to View More

Abstract

The invention discloses kapok nanocellulose aerogel as well as a preparation method and application thereof. According to the kapok nanocellulose aerogel disclosed by the invention, nanocellulose extracted from kapok fibers is used as a raw material, and the nanocellulose is subjected to hydrophobic modification by a silane coupling agent to prepare the aerogel. The nanocellulose is extracted from the kapok fibers which are rich in resources and low in price to prepare oil liquid and organic solvent adsorption materials, so that the preparation cost can be remarkably reduced, and the production process is simplified; and the kapok nanocellulose aerogel prepared through the method has the excellent performance of being low in cost, low in density, high in porosity, degradable and the like, and thekapok nanocellulose aerogel can efficiently adsorb various organic solvents and oil pollutants in sewage, is high in adsorption capacity and speed, can keep adsorbed oil liquid for a long time without secondary leakage, is good in mechanical property, can be repeatedly used, and is easy to degrade and treat after being used.

Description

technical field [0001] The invention relates to a kapok nano-cellulose airgel and its preparation method and application, belonging to the technical field of airgel materials. Background technique [0002] In recent years, petroleum pollutants have become one of the main pollutants in water, causing very serious damage to oceans, rivers and other waters and the surrounding ecological environment. Adsorption has become the main method to deal with the problem of oil pollution, but the commonly used adsorption materials still have problems such as high cost, small adsorption capacity, non-recyclable use, difficult biodegradation, and easy to cause secondary pollution. Therefore, the development of adsorbent materials with low cost, simple preparation process, high adsorption capacity and recyclable use has gradually become a research hotspot. [0003] As a natural adsorption material, kapok fiber has a unique large hollow structure and excellent adsorption performance. It has...

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): C08J9/28B01J13/00B01J20/24B01J20/28B01J20/30B01D17/022B01D39/16
CPCC08J9/28B01J13/0091B01J20/24B01J20/28047B01D17/0202B01D39/1615C08J2301/02C08J2201/0484C08J2205/026Y02A20/204
Inventor 沈华张慧敏王霁龙徐广标王府梅
Owner DONGHUA 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
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