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A kind of quaternary ammonium etherification-sulfo-2-hydroxypropyl etherification starch, preparation method and application thereof

A technology of hydroxypropyl etherification and hydroxypropyltrimethylammonium chloride, which is applied in textiles and papermaking, plant fiber, fiber treatment, etc., can solve problems such as poor adhesion of starch and poor mechanical properties of serous film, and achieve Improve adhesion, improve the mechanical properties of the serous film, improve the effect of wetting and spreading

Active Publication Date: 2021-12-24
ANHUI POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The present invention also provides an application of quaternary ammonium etherification-sulfo-2-hydroxypropyl etherification starch as textile size, which overcomes the defects of poor adhesion of starch and poor mechanical properties of size film

Method used

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  • A kind of quaternary ammonium etherification-sulfo-2-hydroxypropyl etherification starch, preparation method and application thereof
  • A kind of quaternary ammonium etherification-sulfo-2-hydroxypropyl etherification starch, preparation method and application thereof
  • A kind of quaternary ammonium etherification-sulfo-2-hydroxypropyl etherification starch, preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0038] A preparation method of quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch, comprising the following steps:

[0039] 1) Disperse 324g (dry weight) of acid-thinned cornstarch in distilled water containing 32.4g of sodium sulfate to make a 40% (w / w) starch emulsion, transfer the starch emulsion into a 1000mL four-neck flask, and put The stirring device is placed in a water bath, the pH of the system is adjusted to 10-11.5 with a 3% sodium hydroxide solution, and the temperature is raised to 45° C. to keep the temperature.

[0040] 2) Mix 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropyl sodium sulfonate and sodium hydroxide in 45mL of water, stir well; obtain a mixed solution; wherein 3 - Chloro-2-hydroxypropyltrimethylammonium chloride and 3-chloro-2-hydroxypropyl sodium sulfonate are used in an amount of 10g each, and the molar ratio of their total molar amount to the mola...

Embodiment 2

[0045] A preparation method of quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch, comprising the following steps:

[0046] 1) Disperse 324g (dry weight) of acid-thinned cornstarch in distilled water containing 32.4g of sodium sulfate to make a 40% (w / w) starch emulsion, transfer the starch emulsion into a 1000mL four-neck flask, and put The stirring device is placed in a water bath, the pH of the system is adjusted to 10-11.5 with a 3% sodium hydroxide solution, and the temperature is raised to 45° C. to keep the temperature.

[0047] 2) Mix 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropylsulfonate sodium and sodium hydroxide in 70mL of water, stir well; obtain a mixed solution; wherein 3 - Chloro-2-hydroxypropyltrimethylammonium chloride and 3-chloro-2-hydroxypropyl sodium sulfonate are used in an amount of 16g ​​each, and the molar ratio of their total molar amount to the mol...

Embodiment 3

[0052] A preparation method of quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch, comprising the following steps:

[0053] 1) Disperse 324g (dry weight) of acid-thinned cornstarch in distilled water containing 32.4g of sodium sulfate to make 40% (w / w) starch milk, transfer the starch milk into a 1000mL four-neck flask, and put The stirring device is placed in a water bath, and the pH of the system is adjusted to 10-11.5 with a sodium hydroxide solution with a mass fraction of 3%, and the temperature is raised to 45°C to keep the temperature;

[0054] 2) Mix 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropyltrimethylammonium chloride, 3-chloro-2-hydroxypropylsulfonate sodium and sodium hydroxide in 105mL of water, stir well; obtain a mixed solution; wherein 3 - Chloro-2-hydroxypropyltrimethylammonium chloride and 3-chloro-2-hydroxypropyl sodium sulfonate are used in an amount of 26g each, and the molar ratio of their total molar am...

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Abstract

The invention provides a quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch, a preparation method and application thereof. In the present invention, the quaternary ammonium cationic etherification of starch and sulfo-2-hydroxypropyl ether are used Denaturation treatment, the product is neutralized, dehydrated, washed and dried to obtain double etherified amphoteric starch slurry. By using this method of double etherification denaturation to simultaneously introduce trimethylammonium chloride hydroxypropyl and sulfonic acid hydroxypropyl functional groups on the starch molecular chain, it can overcome the structural defects of starch and improve the mechanical properties of starch film. Improve its adhesion to cotton and other fibers, better improve the use of starch size in natural fiber warp sizing, especially pure cotton warp sizing, and help improve sizing quality and weaving efficiency.

Description

technical field [0001] The invention belongs to the field of textiles, and in particular relates to a quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch, a preparation method and an application thereof, which have high adhesion and good mechanical properties of the serosity film. Background technique [0002] During the weaving process, the warp yarn not only has to bear the friction between the warp yarns and the mechanical parts such as the warp yarn and the heddle eye, the shuttle board and the weft insertion device, but also has to withstand the repeated stretching, twisting and tearing of various mechanisms up to thousands of times. Shock effect. However, warp yarns without sizing have a large amount of hairiness on the surface, and the warp yarns will be entangled with each other under the above-mentioned various effects during weaving, causing unclear openings and unable to weave smoothly; in addition, the cohesion between the yarn fibers is low, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08B31/12D06M15/11D06M101/06
CPCD06M15/11C08B31/125D06M2101/06
Inventor 李伟祝志峰徐珍珍刘新华李长龙刘立超
Owner ANHUI POLYTECHNIC UNIV
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