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

Dry solid of anion-modified cellulose nanofiber and method for producing same

A technology of anion modification and nanofiber, which is applied in the direction of surface coating liquid device, coating, pretreatment surface, etc., which can solve the problems of storage space storage and transportation cost increase

Active Publication Date: 2016-08-31
NIPPON PAPER IND CO LTD
View PDF7 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in order to stably maintain the anion-modified CNF in this wet state, the mass of water is several times to hundreds of times that of the anion-modified CNF, and there are various problems such as securing a storage space and increasing storage and transportation costs.

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
  • Dry solid of anion-modified cellulose nanofiber and method for producing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0090]

[0091] The above-mentioned carboxylated CNF (carboxyl group amount: 1.6 mmol / g, average fiber diameter: 40 nm, aspect ratio: 150) was used as anion-modified CNF. 40% by mass relative to the anion-modified CNF was added to a 0.7% by mass aqueous suspension of anion-modified CNF (that is, when the solid content of anion-modified CNF was 100 parts by mass, the solid content of carboxymethyl cellulose 40 parts by mass) of carboxymethylcellulose (trade name: F350HC-4, viscosity (1%, 25°C) about 3000mPa·s, carboxymethyl substitution degree about 0.9), in a TK homomixer (12,000rpm) Stirring in medium temperature for 60 minutes to prepare an aqueous dispersion of anion-modified CNF. The pH of this dispersion liquid is about 7-8. Add 0.5% sodium hydroxide aqueous solution to the aqueous dispersion, adjust the pH to 9, and apply it on the surface of the drum of a drum dryer D0405 (manufactured by Katuragi Industrial Co., Ltd.) to form a film with a thickness of about 100 to ...

Embodiment 2

[0107] In manufacture of a dry solid substance, it carried out similarly to Example 1 except having adjusted pH to 8.

Embodiment 3

[0109] In manufacture of a dry solid substance, it carried out similarly to Example 1 except having adjusted pH to 11.

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
thicknessaaaaaaaaaa
viscosityaaaaaaaaaa
Login to View More

Abstract

In the present invention, when producing a dry solid of anion-modified cellulose nanofibers, the anion-modified cellulose nanofibers are caused to contain 5-300 mass% of a water-soluble polymer, and thus a dry solid of the anion-modified cellulose nanofibers having favorable redispersion properties.

Description

technical field [0001] The present invention relates to a dry solid matter of anionically modified cellulose nanofibers. Background technique [0002] Anion-modified cellulose nanofibers (CNF) are fine fibers with excellent aqueous dispersibility and a fiber diameter of about 4 to several hundreds of nm, and are expected to be used for maintaining the viscosity of foods, cosmetics, medical products, paints, etc., Strengthen food raw materials, maintain moisture, improve food stability, and use as low-calorie additives or emulsification stabilization aids. When the anion-modified CNF dispersed in water (wet state) is dried to form a dry solid, hydrogen bonds are formed between the fibers of fine cellulose fibers. Therefore, even if water is added to the dry solid It is redispersed, and various properties such as solubility, dispersibility, sedimentation degree, and viscosity will not return to the same state as before drying (wet state). Therefore, anion-modified CNF is pro...

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): C08L1/02C08B11/12C08B15/04C08L1/26
CPCC08B11/12C08B15/04C08L1/02C08L1/26B05D3/007C08B3/06
Inventor 中谷丈史木村浩司佐藤伸治
Owner NIPPON PAPER IND CO LTD
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