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A modified starch/polyvinyl alcohol composite fiber and its preparation method

A polyvinyl alcohol and composite fiber technology, which is applied in the chemical characteristics of fibers, preparation of spinning solutions, and conjugated synthetic polymer rayon filaments, etc., can solve the problems of two-phase compatibility and poor fiber formation, and achieve smooth hand feeling. , soft luster, good fiber-forming performance

Active Publication Date: 2017-06-06
SHANGHAI QUANYU BIO TECH SUIPING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The second object of the present invention is to provide the preparation method of the above-mentioned modified starch / polyvinyl alcohol composite fiber, endow the modified starch / polyvinyl alcohol spinning stock solution with excellent stability, and solve the problem of starch / polyvinyl alcohol composite fibers in the prior art. Technical problems of fiber two-phase compatibility and poor fiber formation

Method used

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  • A modified starch/polyvinyl alcohol composite fiber and its preparation method
  • A modified starch/polyvinyl alcohol composite fiber and its preparation method

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Embodiment 1

[0029] The modified starch / polyvinyl alcohol composite fiber of this embodiment is composed of the following components in mass percentage: 10% of modified starch, the balance is polyvinyl alcohol, and the mass content of amylose in the modified starch is 40%. .

[0030] The sweet potato starch was placed in a ball mill, and after high-speed ball milling for 1 hour, a modified sweet potato starch with an amylose content of 40% was obtained. The polyvinyl alcohol is 17-99 type polyvinyl alcohol.

[0031] The preparation method of the present embodiment modified starch / polyvinyl alcohol composite fiber comprises the following steps:

[0032] 1) Add 15 kg of modified sweet potato starch into water, stir and mix thoroughly, add NaOH solution, adjust the pH value to 8, heat to 65°C, and stir until the modified starch is completely dissolved to obtain a starch solution;

[0033] 2) Add 135Kg of polyvinyl alcohol to the starch solution obtained in step 1), heat to 95° C., stir unti...

Embodiment 2

[0037] The modified starch / polyvinyl alcohol composite fiber of this embodiment is composed of the following components in mass percentage: 25% of modified starch, the balance is polyvinyl alcohol, and the mass content of amylose in the modified starch is 45%. .

[0038] The water chestnut starch was placed in a ball mill, and after high-speed ball milling for 2 hours, a modified water chestnut starch with an amylose content of 45% was obtained. The polyvinyl alcohol is 17-99 type polyvinyl alcohol.

[0039] The preparation method of the present embodiment modified starch / polyvinyl alcohol composite fiber comprises the following steps:

[0040] 1) Add 15 kg of modified water chestnut starch into water, stir and mix thoroughly, add NaOH solution, adjust the pH value to 10, heat to 90°C, and stir until the modified starch is completely dissolved to obtain a starch solution;

[0041] 2) Add 45Kg of polyvinyl alcohol to the starch solution obtained in step 1), heat to 95° C., stir...

Embodiment 3

[0045] The modified starch / polyvinyl alcohol composite fiber of this embodiment is composed of the following components in mass percentage: 50% of modified starch, the balance is polyvinyl alcohol, and the mass content of amylose in the modified starch is 42%. .

[0046] The modified starch is obtained by ball milling potato starch for 1.5h. The polyvinyl alcohol is 17-88 type polyvinyl alcohol.

[0047] The preparation method of the present embodiment modified starch / polyvinyl alcohol composite fiber comprises the following steps:

[0048] 1) Add 65 kg of modified potato starch into water, stir and mix thoroughly, add NaOH solution, adjust the pH value to 10, heat to 50°C, and stir until the modified starch is completely dissolved to obtain a starch solution;

[0049] 2) Add 65Kg of polyvinyl alcohol to the starch solution obtained in step 1), heat to 80° C., stir until completely dissolved, adjust the pH value to 12 with hydrochloric acid, filter, and stand for defoaming f...

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Abstract

The invention discloses a modified starch / polyvinyl alcohol composite fiber. The modified starch / polyvinyl alcohol composite fiber provided by the invention consists of the following components in percentage by mass: 10-70 percent of modified starch and balance of polyvinyl alcohol, wherein the mass content of amylose in the modified starch is 40-45 percent. The invention further provides a preparation method of the modified starch / polyvinyl alcohol composite fiber. Spinning solution obtained through the method has the advantages that the stability and fiber forming property are greatly improved relative to common starch / polyvinyl alcohol fibers, the improvement of spinning efficiency is facilitated and composite fibers with smooth and regular surfaces are obtained. The composite fiber prepared by adopting the method has superior dry strength at break, modulus, moisture absorbability and degradability to single polyvinyl alcohol fibers, can be used in garment textiles and can endow the garment textiles with good characteristics such as soft and smooth hand feeling, tender gloss, skin friendliness and healthcare and good wearing comfort.

Description

technical field [0001] The invention belongs to the technical field of polyvinyl alcohol composite fiber wet spinning, and in particular relates to a modified starch / polyvinyl alcohol composite fiber and a preparation method thereof. Background technique [0002] Textile fibers are divided into natural fibers and synthetic fibers. Natural fibers have excellent hygroscopicity and air permeability, and are comfortable to wear, but their output is low and their strength is insufficient. Although synthetic fibers have the advantages of high strength and large output, they have major deficiencies in dyeability, wearing comfort, and health. With the improvement of people's living standards, natural, comfortable, healthy and colorful fibers are becoming more and more popular in the market. [0003] Combining natural fibers and synthetic fibers to obtain high-performance and high-quality composite fibers has become one of the directions of technical personnel's efforts. Since the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F8/10D01F8/18C08L29/04C08L3/02D01D13/00D01D5/06D01D1/02
Inventor 刘三民
Owner SHANGHAI QUANYU BIO TECH SUIPING
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