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Method for modifying polyester fiber through polyethylene glycol grafted chitosan

A technology of polyethylene glycol grafting and chitosan modification, which is applied in the direction of improved hand fiber, fiber treatment, biochemical fiber treatment, etc., can solve the problem of poor water resistance, hydrophilicity and electrical resistance of polyester fabrics. Unfavorable for industrial production, long preparation process and other problems, to achieve the effect of improving hydrophilic performance and antistatic performance, high economic benefits and industrial promotion prospects, and improving hand feeling

Inactive Publication Date: 2016-05-04
SUZHOU INSILK CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polyester fabric is treated with this finishing agent. When the mass concentration of the finishing agent is 8g / L, the baking time is 5 minutes, and the baking temperature is 120°C, the polyester fabric has better mechanical properties, hydrophilic properties and antistatic properties. Performance is the closest to the prior art of the present invention, but this technology is to use the finishing agent obtained by grafting polyethylene glycol chitosan to carry out post-finishing of polyester fabrics. The preparation process takes a long time, the process is complicated, and after finishing The hydrophilicity and electrical resistance of polyester fabrics are not good, which is not conducive to industrial production.

Method used

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  • Method for modifying polyester fiber through polyethylene glycol grafted chitosan
  • Method for modifying polyester fiber through polyethylene glycol grafted chitosan
  • Method for modifying polyester fiber through polyethylene glycol grafted chitosan

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A method for polyethylene glycol grafted chitosan modified polyester fiber, comprising the following steps:

[0036] The first step: pretreatment of polyester fiber:

[0037] Stir the polyester fiber with a sodium hydroxide solution of 20% by mass for 1 hour at a temperature of 50°C, the mechanical stirring speed is 100 rpm, and the solid-to-liquid ratio of the polyester fiber to the sodium hydroxide solution is 1:30 Drain the polyester fiber after pretreatment, rinse it with cold water and dry it at 20°C to obtain pretreated polyester fiber;

[0038] The second step: preparation of polyethylene glycol grafted chitosan derivatives:

[0039] Dissolve 20g of chitosan in 300ml of N,N-dimethylformamide solution, stir at 50°C for 10 hours, then add 20ml of phthalic anhydride, and react at 135°C for 6 hours. Precipitate with ice-water mixture to cool down, filter, wash with absolute ethanol and water, and dry at 50°C to obtain amidated chitosan;

[0040] Amidated chitosan,...

Embodiment 2

[0045] A method for polyethylene glycol grafted chitosan modified polyester fiber, comprising the following steps:

[0046] The first step: pretreatment of polyester fiber:

[0047] Stir the polyester fiber with a sodium hydroxide solution of 22% by mass for 1.5 hours at a temperature of 55°C, the mechanical stirring speed is 150 rpm, and the solid-to-liquid ratio of the polyester fiber to the sodium hydroxide solution is 1:40 Drain the polyester fibers after pretreatment, rinse them with cold water and dry them at 30°C to obtain pretreated polyester fibers;

[0048] The second step: preparation of polyethylene glycol grafted chitosan derivatives:

[0049] Dissolve 20g of chitosan in 300ml of N,N-dimethylformamide solution, stir at 55°C for 10 hours, then add 20ml of phthalic anhydride, and react at 135°C for 7 hours. Precipitate with ice-water mixture to cool down, filter, wash with absolute ethanol and water, and dry at 50°C to obtain amidated chitosan;

[0050] Amidated ...

Embodiment 3

[0055] A method for polyethylene glycol grafted chitosan modified polyester fiber, comprising the following steps:

[0056] The first step: pretreatment of polyester fiber:

[0057] Stir the polyester fiber with a sodium hydroxide solution of 20% by mass for 1 hour at a temperature of 55°C, the mechanical stirring speed is 150 rpm, and the solid-to-liquid ratio of the polyester fiber to the sodium hydroxide solution is 1:30 Drain the polyester fibers after pretreatment, rinse them with cold water and dry them at 30°C to obtain pretreated polyester fibers;

[0058] The second step: preparation of polyethylene glycol grafted chitosan derivatives:

[0059] Dissolve 20g of chitosan in 300ml of N,N-dimethylformamide solution, stir at 55°C for 10 hours, then add 20ml of phthalic anhydride, and react at 135°C for 6 hours. Precipitate with ice-water mixture to cool down, filter, wash with absolute ethanol and water, and dry at 50°C to obtain amidated chitosan;

[0060] Amidated chi...

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Abstract

The invention discloses a method for modifying polyester fiber through polyethylene glycol grafted chitosan, and belongs to the technical field of textile chemicals. The method comprises the process of pretreating the polyester fiber, the process of preparing a polyethylene glycol grafted chitosan derivative and the process of modifying the polyester fiber through the polyethylene glycol grafted chitosan. After the polyester fiber is modified through a sodium hydroxide solution, the fiber surface is roughed, adhesion of the chitosan derivative in the later period is facilitated, cyanuric acid is added for modifying amidation chitosan to obtain cyanuric acid modified amidation chitosan, the modified chitosan can better have a grafting reaction with polyethylene glycol, the flexibility and hydrophilic performance are more excellent, the modified chitosan can carry out grafting and adsorption on polyester fiber to improve the hydrophilic performance and anti-static performance of polyester molecules, the hand feel of a polyester fiber fabric is improved to a certain degree, the polyester fiber fabric has the certain antibacterial performance, and meanwhile the polyester fiber fabric is firm in grafting, good in water resistance, high in economic benefit and wide in industrial popularization prospect.

Description

Technical field: [0001] The invention discloses a method for modifying polyester fiber by grafting polyethylene glycol with chitosan, which belongs to the technical field of textile chemical industry. Background technique: [0002] Polyester is the trade name of polyethylene terephthalate fiber, and it is one of the three main fibers in synthetic fibers. Because the polyester linear macromolecule is a symmetrical benzene ring structure, the linearity is good and the molecular chain structure is three-dimensional, which makes it have superior physical and mechanical properties such as high strength, good elasticity and rigidity, and is stable to weak acids and alkalis, and has excellent dimensions. Stability and good corrosion resistance, it is an ideal textile fiber. However, polyester is a typical hydrophobic fiber with only one hydroxyl group at each end of its molecule and no other hydrophilic groups. The molecular structure Closely arranged, high crystallinity, poor hyg...

Claims

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Application Information

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IPC IPC(8): D06M15/53D06M15/03D06M11/155D06M11/38C08G81/00C08B37/08D06M101/32
CPCD06M15/53C08B37/003C08G81/00D06M11/155D06M11/38D06M15/03D06M16/00D06M2101/32D06M2200/50
Inventor 周继东
Owner SUZHOU INSILK CO LTD
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