Quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch as well as preparation method and application thereof

A technology of hydroxypropyl etherification and hydroxypropyl trimethyl ammonium chloride, which can be used in fiber processing, textiles and papermaking, plant fibers, etc. The effect of improving adhesion, improving mechanical properties of serous film, and improving mechanical properties

Active Publication Date: 2017-05-10
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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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 etherific

Method used

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  • Quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch as well as preparation method and application thereof
  • Quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch as well as preparation method and application thereof
  • Quaternary ammonium etherified-sulfo-2-hydroxypropyl etherified starch as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
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 as well as a preparation method and an application thereof. Starch is subjected to quaternary ammonium cationic etherification and sulfo-2-hydroxypropyl etherification denaturation treatment, a product is neutralized, dehydrated, washed and dried, and dual-etherification amphoteric starch size is obtained. With the adoption of a method for introducing hydroxypropyltrimethyl ammonium chloride and sulfonyl hydroxypropyl functional groups simultaneously into starch molecule chains through dual-etherification denaturation, structural defects of the starch are overcome, mechanical properties of a starch size film are improved, adhesive force of the starch to fibers such as cotton and the like is improved, the use effect of the starch size for sizing of natural fiber warp, especially, sizing of pure cotton warp is better improved, and improvement of sizing quality and weaving efficiency is facilitated.

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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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 UNIVERSITY OF TECHNOLOGY AND SCIENCE
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