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Hydrophilic polyester fiber modified by cellulose nanocrystal and preparation method thereof

A polyester fiber and nanocrystal technology, which is applied in the preparation field of hydrophilic polyester fiber, can solve the problems of poor hydrophilicity of conventional polyester, and achieve the effects of improving hydrophilic effect, good hydrophilic performance and improving hydrophilic performance.

Active Publication Date: 2015-03-11
嘉兴逸鹏化纤有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention needs to solve the problem of poor hydrophilicity of conventional polyesters and provide a hydrophilic polyester fiber modified by cellulose nanocrystals

Method used

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  • Hydrophilic polyester fiber modified by cellulose nanocrystal and preparation method thereof
  • Hydrophilic polyester fiber modified by cellulose nanocrystal and preparation method thereof
  • Hydrophilic polyester fiber modified by cellulose nanocrystal and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The hydrophilic polyester chips modified by cellulose nanocrystals are carried out by in-situ polymerization, and the polymerization method is a batch polymerization process, and its formula is as follows:

[0036]

[0037] The cellulose nanocrystals are dispersed in water in the form of aqueous suspension, and the concentration in the suspension is 1 wt%. The length of nanocrystals is less than 500nm and the diameter is less than 50nm. The microscopic morphology of cellulose nanocrystals can be seen in figure 1 . According to the composition of raw materials in the polymerization reaction, a certain amount of terephthalic acid (PTA) and ethylene glycol with a molar ratio of 1:1.4 were weighed. The cellulose nanocrystal aqueous suspension is added to a weighed 80% ethylene glycol solvent, the moisture in the suspension is absorbed by molecular sieves, and then the ethylene glycol suspension containing the cellulose nanocrystal is prepared. The content of cellulose...

Embodiment 2

[0041] The hydrophilic polyester chips modified by cellulose nanocrystals are carried out by in-situ polymerization, and the polymerization method is a batch polymerization process, and its formula is as follows:

[0042]

[0043] The cellulose nanocrystals are dispersed in water in the form of aqueous suspension, and the concentration in the suspension is 1 wt%. The length of the nanocrystal is less than 500nm, the diameter is less than 50nm, and the form of the cellulose nanocrystal is the same as that of Example 1. According to the composition of raw materials in the polymerization reaction, a certain amount of terephthalic acid (PTA) and ethylene glycol with a molar ratio of 1:1.6 were weighed. The cellulose nanocrystal aqueous suspension is added into a weighed 80% ethylene glycol solvent, the moisture in the suspension is absorbed by molecular sieves, and then the ethylene glycol suspension containing the cellulose nanocrystal is prepared. The content of cellulose na...

Embodiment 3

[0047] The hydrophilic polyester chips modified by cellulose nanocrystals are carried out by in-situ polymerization, and the polymerization method is a batch polymerization process, and its formula is as follows:

[0048]

[0049] The cellulose nanocrystals are dispersed in water in the form of aqueous suspension, and the concentration in the suspension is 1 wt%. The length of the nanocrystal is less than 500nm, the diameter is less than 50nm, and the form of the cellulose nanocrystal is the same as that of Example 1. According to the composition of raw materials in the polymerization reaction, a certain amount of terephthalic acid (PTA) and ethylene glycol with a molar ratio of 1:1.8 were weighed. The cellulose nanocrystal aqueous suspension is added into a weighed 80% ethylene glycol solvent, the moisture in the suspension is absorbed by molecular sieves, and then the ethylene glycol suspension containing the cellulose nanocrystal is prepared. The content of cellulose na...

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Abstract

The invention relates to a hydrophilic polyester fiber modified by cellulose nanocrystal and a preparation method thereof and aims to solve a problem of a poor hydrophilicity of conventional polyester. The preparation method includes following steps: (1) mixing a cellulose nanocrystal aqueous suspension liquid and 75-85% by weight of ethylene glycol and removing water from a mixed liquid to prepare an ethylene glycol suspension liquid of the cellulose nanocrystal; (2) preparing a mixed slurry liquid from the ethylene glycol suspension liquid of the cellulose nanocrystal and terephthalic acid; (3) preparing a catalyst liquid form the balanced ethylene glycol and a catalyst; (4) mixing the mixed slurry liquid, the catalyst liquid and a thermal stabilizing agent, and performing a first esterification reaction in a reaction kettle with stirring and heating; (5) performing a secondary esterification reaction with addition of a polyhydroxy-alcohol; (6) performing vacuumizing condensation polymerization to obtain a hydrophilic polyester melt, and cooling and pelleting the melt to obtain a hydrophilic polyester chip; and (7) performing melt spinning to the hydrophilic polyester chip to prepare the hydrophilic polyester fiber.

Description

technical field [0001] The invention relates to a nano-modified hydrophilic polyester chip and a preparation method of a cellulose nano-crystal modified hydrophilic polyester fiber. Background technique [0002] my country's chemical fiber production accounts for about 70% of the world's total chemical fiber production, and is the most important raw material for the textile industry. Among them, polyester fiber is the most important synthetic fiber variety, and its development directly affects the overall level and competitiveness of my country's textile industry. Although my country's polyester production capacity and output rank first in the world, my country's polyester fiber industry still faces some outstanding problems that need to be solved urgently. At present, the development of polyester fibers in foreign developed countries has eliminated the production of conventional polyester fibers, and scientific research efforts are mainly concentrated on the development an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10C08G63/183C08G63/78
Inventor 纪国营胡舒龙徐锦龙
Owner 嘉兴逸鹏化纤有限公司
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