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Hydrophilic modification method of PVA to polyester fiber

A polyester fiber and hydrophilic modification technology, which is applied in the field of polymers, can solve the problems of poor hydrophilicity of polyester fiber, and achieve the effects of low cost, small usage and simple source

Inactive Publication Date: 2014-08-13
WUHAN TEXTILE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a method for the hydrophilic modification of polyester fibers by PVA for the problem of poor hydrophilicity of polyester fibers

Method used

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  • Hydrophilic modification method of PVA to polyester fiber
  • Hydrophilic modification method of PVA to polyester fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1 Accurately weigh 3g of sodium hydroxide solid, add 97ml of water to prepare a sodium hydroxide solution with a mass fraction of 3%, put it into a stirring container, then add 2g of polyester fiber to the container, and put it in the reaction container at 70°C Stirring pretreatment for 1 hour, the mechanical stirring speed is 100 rpm, the solid-liquid ratio of the polyester fiber and the reaction solution is 1:50, after the reaction, wash and dry the polyester fiber with water.

[0022] 2 Accurately weigh 1.0g of PVA with an electronic weighing instrument, add 499ml of deionized water, dissolve at 70°C, and prepare a PVA solution with a mass fraction of 0.2%, and the solute is evenly distributed in the solution.

[0023] 3 Put the above-mentioned dried polyester fiber and the prepared PVA solution with a mass fraction of 0.2% into the reaction vessel, then add 30ml of acetic acid, 20ml of methanol, and 10ml of sulfuric acid to the reaction vessel. The volume...

Embodiment 2

[0027] 1 Accurately weigh 5g of sodium hydroxide solid, add 95ml of water to prepare a sodium hydroxide solution with a mass fraction of 5%, put it into a stirring container, then add 2g of polyester fiber to the container, and put it in the reaction container at 70°C Stirring pretreatment for 1 hour, the mechanical stirring speed is 250 rpm, the solid-liquid ratio of the polyester fiber and the reaction solution is 1:50, after the reaction, wash and dry the polyester fiber with water.

[0028] 2 Accurately weigh 2.0g of PVA with an electronic weighing instrument, add 98ml of deionized water, dissolve at 70°C, and prepare a PVA solution with a mass fraction of 2%, and the solute is evenly distributed in the solution.

[0029] 3 Put the above-mentioned dried polyester fiber and the prepared PVA solution with a mass fraction of 2% into the reaction vessel, then add 30ml of acetic acid, 20ml of methanol, and 10ml of sulfuric acid to the reaction vessel. The volume frac...

Embodiment 3

[0033] 1 Accurately weigh 10g of sodium hydroxide solid, add 90ml of water to prepare a sodium hydroxide solution with a mass fraction of 10%, put it into a stirring container, then add 2g of polyester fiber to the container, and put it in the reaction container at 70°C Stirring pretreatment for 1 hour, the mechanical stirring speed is 400 rpm, the solid-liquid ratio of the polyester fiber and the reaction solution is 1:50, after the reaction, wash and dry the polyester fiber with water.

[0034] 2 Accurately weigh 3.0g of PVA with an electronic weighing instrument, add 97ml of deionized water, dissolve at 70°C, and prepare a PVA solution with a mass fraction of 3%, and the solute is evenly distributed in the solution.

[0035] 3 Put the above-mentioned dried polyester fiber and the prepared PVA solution with a mass fraction of 3% into the reaction vessel, then add 30ml of acetic acid, 20ml of methanol, and 10ml of sulfuric acid to the reaction vessel. The volume fr...

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Abstract

The invention provides a hydrophilic modification method of PVA to polyester fiber, which belongs to the high-molecular technical field. The method comprises the following steps: pretreating the polyester fiber by a sodium hydroxide solution with 3-10% of mass fraction for 1 hour, wherein the solid liquid ratio is 1: 50, flushing and drying the polyester fiber, then placing the polyester fiber in a reaction container filled with a PVA solution with 0.2-0.3% of mass fraction, then adding acetate, methanol and sulfuric acid according to volume ratio of 3: 2: 1 in the reaction container, wherein the volume fraction of acetate, methanol and sulfuric acid are 10% respectively, adding GA with 25% of mass fraction in the reaction container, wherein the mol ratio of GA to PVA is 1: 4, performing mechanical stirring and reacting for 1-2 hours under the temperature of 50-70 DEG C, washing by water after the reaction is completed, and drying. Through representation and determination, the surface of the modified polyester fiber uniformly contains PVA, the contact angle is less than 10-50 DEG, hydrophilcity of the polyester fiber is greatly improved, the effect is stable, and the polyester fiber can be widely used in the fields of regeneration resource papermaking, clothes, decoration and industry and 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 PVA, 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 internal molec...

Claims

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Application Information

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IPC IPC(8): D06M15/333D06M101/32
Inventor 姚翔黄良辉孟静徐卫林
Owner WUHAN TEXTILE UNIV
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