Hydrophilic modification method for polyester fiber by using sodium alginate

A technology of polyester fiber and sodium alginate, which is applied in the field of polymers, can solve the problems of poor hydrophilicity of polyester fiber, and achieve the effect of easy operation, small dosage and high hydrophilicity

Inactive Publication Date: 2014-09-10
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the problem of poor hydrophilic property of the above-mentioned polyester fiber, the purpose of the present invention is to provide a method for the hydrophilic modification of polyester fiber by sodium alginate

Method used

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  • Hydrophilic modification method for polyester fiber by using sodium alginate
  • Hydrophilic modification method for polyester fiber by using sodium alginate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1. Accurately weigh 3g of sodium hydroxide solid, add 97ml of water to prepare a 3% sodium hydroxide solution, and put it in a stirring vessel, then add 2g of polyester fiber to the vessel, and place it in the reaction vessel at 70℃. The medium stirring pretreatment is 1 hour, the mechanical stirring speed is 200 rpm, and the solid-liquid ratio of the polyester fiber and the reaction solution is 1:50. After the reaction, the polyester fiber is rinsed and dried with water.

[0023] 2. Accurately weigh 4g of sodium alginate solids, add 96ml of deionized water to prepare a 4% sodium alginate solution, stir it fully, the mechanical stirring speed is 200 rpm, and then place it at 4°C Let it stand for 1 hour to make the sodium alginate fully absorb water and swell to obtain a viscous solution of sodium alginate.

[0024] 3. Accurately weigh 2g of calcium chloride solids, add 98ml of deionized water to prepare a calcium chloride solution with a mass fraction of 2% for use, and put ...

Embodiment 2

[0028] 1. Accurately weigh 5g of sodium hydroxide solid, add 95ml of water to prepare a 5% sodium hydroxide solution, and put it in a stirring vessel, then add 2g of polyester fiber to the vessel, and place it in the reaction vessel at 80℃. The medium stirring pretreatment is 1h, the mechanical stirring speed is 300 rpm, and the solid-liquid ratio of the polyester fiber and the reaction solution is 1:50. After the reaction, the polyester fiber is rinsed and dried with water.

[0029] 2. Accurately weigh 3g of sodium alginate solids, add 97ml of deionized water to prepare a 3% sodium alginate solution, stir it fully, the mechanical stirring speed is 300 rpm, and then place it at a temperature of 4 ℃ Let it stand for 1 hour to make the sodium alginate fully absorb water and swell to obtain a viscous solution of sodium alginate.

[0030] 3. Accurately weigh 2g of calcium chloride solids, add 98ml of deionized water to prepare a 2% calcium chloride solution for use, and put the treated...

Embodiment 3

[0034] 1. Accurately weigh 10g of sodium hydroxide solid, add 90ml of water to prepare a 10% sodium hydroxide solution, and put it into a stirring vessel, then add 2g of polyester fiber to the vessel, and place it in the reaction vessel at 90℃. The medium stirring pretreatment is 1h, the mechanical stirring speed is 400 rpm, and the solid-liquid ratio of the polyester fiber and the reaction solution is 1:50. After the reaction, the polyester fiber is rinsed and dried with water.

[0035] 2. Accurately weigh 2g of sodium alginate solids, add 98ml of deionized water to prepare a 2% sodium alginate solution, stir it fully, the mechanical stirring speed is 400 rpm, and then place it at 4°C Let it stand for 1 hour to make the sodium alginate fully absorb water and swell to obtain a viscous solution of sodium alginate.

[0036] 3. Accurately weigh 2g of calcium chloride solids, add 98ml of deionized water to prepare a calcium chloride solution with a mass fraction of 2% for use, and put ...

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Abstract

The invention provides a hydrophilic modification method for a polyester fiber by using sodium alginate, which belongs to the technical field of high polymer. The method comprises the following steps: stirring and pretreating the polyester fiber by using a sodium hydroxide solution with a mass fraction of 3 to 10% in a reaction container at a temperature of 70 to 90 DEG C for 1 h, wherein a solid-liquid ratio is 1: 50, then carrying out flushing with water after completion of a reaction and carrying out drying; and preparing a sodium alginate solution with a mass fraction of 1 to 4%, standing the sodium alginate solution at a temperature of 4 DEG C for 1 h, allowing sodium alginate to expand after sufficient water absorption, placing the sodium alginate solution in the reaction container, adding the dried polyester fiber into the reaction container, carrying out mechanical stirring at normal temperature for 1 to 2 h, adding a calcium chloride solution with a mass fraction of 2% during stirring and after completion of a reaction, successively carrying out flushing with water and then drying at 70 DEG C for 1 h. According to determination results, the contact angle of the modified polyester fiber is less than 10 to 60 DEG, hydrophilicity of the polyester fiber and products thereof are greatly improved, and the modified polyester fiber can be extensively applied to fields like papermaking with renewable resources, clothes, decoration, the industry and the agriculture.

Description

technical field [0001] The invention relates to a method for modifying polyester fibers, in particular to a method for hydrophilically modifying polyester fibers with sodium alginate, and belongs to the technical field of polymers. Background technique [0002] Polyester fiber is a kind of polyester fiber, also known as POLYESTER, which is made from polyterephthalic acid or dimethyl terephthalate and ethylene glycol through esterification or transesterification and polycondensation reactions. Fiber-forming high polymer - polyethylene terephthalate, fiber made by spinning and post-processing. Polyester fiber has a wide range of uses and is widely used in the manufacture of clothing and industrial products. [0003] Many physical and chemical properties of polyester fiber are superior to natural fibers, such as high strength and good wear resistance, and its products are not easy to deform, wrinkle, crisp, and low in price. However, due to the tight arrangement of the intern...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/13D06M11/38D06M11/155D06M101/32
Inventor 黄良辉姚翔潘恒祥孟静徐卫林
Owner WUHAN TEXTILE UNIV
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