A kind of microcrystalline cellulose modified polyester fiber and preparation method thereof

A technology of microcrystalline cellulose and modified polyester, applied in the field of polyester, can solve the problems of poor hydrophilic properties of polyester fibers, and achieve the effects of improving hydrophilic properties, improving compatibility and good compatibility

Active Publication Date: 2019-02-22
ZHEJIANG HENGYI HIGH TECH MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to solve the problem of poor hydrophilic property of polyester fiber, the present invention provides a preparation method of microcrystalline cellulose modified polyester, which can improve the hydrophilic property of polyester, and can be widely used in the preparation of moisture-wicking and antistatic fibers. Body-fitting fabrics, fiber products with high color fastness

Method used

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  • A kind of microcrystalline cellulose modified polyester fiber and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] (1) Preparation and surface modification of cellulose microcrystals:

[0047] Add microcrystalline cellulose to sulfuric acid with a concentration of 10mol / L and mixed acid with phthalic acid to fully decompose microcrystalline cellulose. The molar ratio of sulfuric acid to phthalic acid is 1:0.1; The decomposition reaction was continuously stirred at 100° C. for 10 h, and washed with deionized water to obtain cellulose microcrystals. The dispersion liquid is freeze-dried to obtain phthalic acid-modified cellulose microcrystals with a particle size of 100 nm.

[0048] (2) Cellulose microcrystalline / glycol beating:

[0049] The mass fraction ratio of the surface-modified cellulose crystallites in ethylene glycol prepared in step (1) is 20% and beaten, and phthalic anhydride is added at the same time, and the added phthalic anhydride is surface-modified cellulose 5% of the microcrystalline mass, forming a uniform cellulose microcrystalline slurry.

[0050] (3) In-situ ...

Embodiment 2

[0055] (1) Preparation and surface modification of cellulose microcrystals:

[0056] Add microcrystalline cellulose to the mixed acid of hydrochloric acid and phthalic acid with a concentration of 5mol / L to fully decompose the microcrystalline cellulose. The molar ratio of hydrochloric acid and phthalic acid in the mixed acid is 1:0.5; Under the constant temperature condition of the bath: the constant temperature condition of the oil bath is controlled at 110° C., the decomposition reaction is continuously stirred for 8 hours, and the cellulose microcrystals are obtained by washing with deionized water. The dispersion liquid is freeze-dried to obtain phthalic acid-modified cellulose microcrystals on the surface with a particle size of 150 nm.

[0057] (2) Cellulose microcrystalline / glycol beating:

[0058] The surface-modified cellulose microcrystals are beaten in propylene glycol, and the surface-modified cellulose microcrystals account for 40% of the mass in propylene glyco...

Embodiment 3

[0064] (1) Preparation and surface modification of cellulose microcrystals:

[0065] Add microcrystalline cellulose to the mixed acid of nitric acid and phthalic acid with a concentration of 1mol / L to fully decompose the microcrystalline cellulose. The molar ratio of nitric acid and phthalic acid in the mixed acid is 1:1. Continue to stir and decompose for 5 hours at a constant temperature of 120°C, wash with deionized water to obtain cellulose microcrystals, freeze-dry the dispersion, and obtain surface phthalic acid with a particle size of 200 nm for the cellulose microcrystals. Modified cellulose microcrystals.

[0066] (2) Cellulose microcrystalline / glycol beating:

[0067] Surface-modified cellulose microcrystals are beaten in butanediol, and the mass fraction of cellulose microcrystals in butanediol is 60%; at the same time, phthalic anhydride is added, and the added phthalic anhydride is surface modification 3% of the mass of cellulose crystallites forms a uniform cel...

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Abstract

The invention relates to the technical field of polyester, which solves the problem of poor hydrophilic performance of polyester fiber. The invention provides a method for preparing microcrystalline cellulose-modified polyester fiber. The method comprises the following steps: cellulose crystallite preparation and its surface modification, cellulose crystallite beating, cellulose crystallite in-situ addition, and melt spinning on microcrystalline cellulose-modified polyester. The prepared microcrystalline cellulose-modified polyester fiber has good moisture absorption performance, polyhydroxy active site active sites are provided in the fiber, fiber is capable of dyeing under mild condition, has good dyeing performance, can be widely sued for preparing moisture absorbable and breathable antistatic fiber, and can be taken as fabrics which is suitable for skin.

Description

technical field [0001] The invention relates to the technical field of polyester, in particular to a microcrystalline cellulose modified polyester fiber and a preparation method thereof. After the cellulose microcrystalline surface is modified, it is introduced into the polyester in the form of slurry, and then passed through a special-shaped spinneret A method for preparing microcrystalline cellulose modified polyester fibers by melt spinning. Background technique [0002] In 2011, my country's polyester fiber output was 27.95 million tons, accounting for 83% of my country's chemical fiber output and 70% of the world's polyester fiber output. Although my country's polyester production capacity and output ranks first in the world, my country's polyester fiber industry still faces some outstanding problems that need to be solved urgently: irrational product structure, fierce homogenization competition, and low profit margins in the industry. In this case, the development and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10D01F1/09C08G63/672C08G63/78C08B15/00
CPCC08B15/00C08G63/672C08G63/78D01F1/09D01F1/10D01F6/92
Inventor 纪国营徐锦龙吉鹏王朝生李建武
Owner ZHEJIANG HENGYI HIGH TECH MATERIAL
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