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Fibrous celluloses, method for producing same, and resin composition

A manufacturing method and cellulose technology, which are applied in the field of fibrous cellulose and its manufacturing method and resin composition, can solve the problems of poor dispersion of modified cellulose nanofibers, insufficient reinforcement effect, etc., and achieve excellent reinforcement effect , high-strength effect

Active Publication Date: 2020-09-11
DAIO PAPER CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the obtained modified cellulose nanofibers do not have good dispersion in the resin, so the reinforcing effect is not sufficient

Method used

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  • Fibrous celluloses, method for producing same, and resin composition
  • Fibrous celluloses, method for producing same, and resin composition
  • Fibrous celluloses, method for producing same, and resin composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0182] The conifer bleached sulfate pulp (solid content 3 mass %) slurry was processed 60 times with a homogenizer, and the microfibrous cellulose slurry was obtained. The average fiber width of the obtained microfibrous cellulose was measured by SEM, and it was confirmed that it was 1 μm or more. In addition, the number-average fiber length of the microfiber cellulose measured by the fiber analyzer "FS5" was 0.16 mm, and the ratio of the fiber length of 0.2 mm or less was 83%.

[0183] 10 parts by mass of the obtained microfibrous cellulose slurry (in terms of solid content), 83 parts by mass of polypropylene powder, and 7 parts by mass of phthalic anhydride were mixed to obtain a microfibrous cellulose mixed solution. The obtained microfibrous cellulose mixed solution was dried at 105° C. for 24 hours with a hot air dryer to obtain a microfibrous cellulose dried body. The obtained dried microfiber cellulose was kneaded with a biaxial kneader to obtain a microfiber cellulose...

Embodiment 2

[0185] A composite resin was obtained in the same manner as in Example 1, except that the number of homogenizer treatments was changed to 10 times. In addition, the compounding ratio of fibrous cellulose, phthalic anhydride, and polypropylene was 10:7:83 on a mass basis similarly to Example 1. In addition, the average fiber width of the microfibrous cellulose obtained by the homogenizer treatment of 10 times was measured by SEM, and it was confirmed that it was 1 μm or more. In addition, the number average fiber length of the microfiber cellulose measured by the fiber analyzer "FS5" was 1.60 mm, and the ratio of the fiber length of 0.2 mm or less was 16%.

Embodiment 3

[0187] A composite resin was obtained in the same manner as in Example 1 except that the number of times of the homogenizer treatment was changed to 20. In addition, the compounding ratio of fibrous cellulose, phthalic anhydride, and polypropylene was 10:7:83 on a mass basis similarly to Example 1. In addition, the average fiber width of the microfibrous cellulose obtained by the homogenizer treatment of 20 times was measured by SEM, and it was determined to be 1 μm or more. In addition, the number average fiber length of the microfiber cellulose measured by the fiber analyzer "FS5" was 1.08 mm, and the ratio of the fiber length of 0.2 mm or less was 26%.

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Abstract

[Problem] To provide: a fibrous cellulose which exhibits excellent reinforcing effect for resins; a method for producing this fibrous cellulose; and a resin composition which has high strength. [Solution] A fibrous cellulose according to the present invention is a microfibrous cellulose which has an average fiber diameter of 1 micron or more, and which is hydrophobically modified. When this fibrous cellulose is produced according to the present invention, a starting material fiber is fibrillated into a microfibrous cellulose that has an average fiber diameter of 1 micron or more, while being hydrophobically modified. A resin composition according to the present invention is configured to contain this fibrous cellulose and a resin.

Description

technical field [0001] The present invention relates to fibrous cellulose, a method for producing the same, and a resin composition. Background technique [0002] In recent years, attention has been paid to nanotechnology for obtaining new physical properties that are different from existing properties of substances by miniaturizing substances to the nanometer level. Cellulose nanofibers (fine cellulose fibers) produced from pulp fibers as cellulose-based raw materials by chemical treatment, pulverization, etc. are excellent in strength, elasticity, thermal stability, etc., and are expected to be used as filter materials, filter aids, etc. Industrial uses such as agents, substrates for ion exchangers, fillers for chromatographic analysis equipment, fillers for compounding resins and rubbers, etc., and compounding agents for cosmetics such as lipsticks, powder cosmetics, and emulsified cosmetics. middle. In addition, cellulose nanofibers (CNF) have excellent water-based dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B3/20C08B3/12C08L1/10C08L101/00
CPCC08B3/20C08L101/02C08B3/12C08L101/00C08L23/12C08L1/10C08L1/02C08L2205/16
Inventor 松末一紘藤田绫
Owner DAIO PAPER CORP