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Methyl acrylate grafted starch slurry synthesized by ultrasound microwave method

A technology of methyl acrylate and grafted starch, which is applied in the field of textile pulp, and achieves the effects of reducing the cost of pulp, simple method, and simple synthesis method

Inactive Publication Date: 2011-05-11
四川海旺科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the preparation of grafted starch slurry by the synergistic effect of ultrasonic and microwave.

Method used

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  • Methyl acrylate grafted starch slurry synthesized by ultrasound microwave method
  • Methyl acrylate grafted starch slurry synthesized by ultrasound microwave method
  • Methyl acrylate grafted starch slurry synthesized by ultrasound microwave method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Weigh 80 parts of raw corn starch, add 320 parts of deionized water, stir evenly to form starch milk, ultrasonicate at room temperature for 25 minutes, filter and dry, then add 20 parts of methyl acrylate, 0.031 parts of ammonium persulfate, and 0.09 parts of potassium persulfate , 200 parts of deionized water, fully stirred, placed under a microwave synthesis device, adjusted the power of the microwave oven to control the temperature at 40°C and continued to stir, discharging, cooling, filtering, washing, drying, and pulverizing to obtain powdery methyl acrylate grafted starch. The AM grafted starch was boiled at 95°C for 1 hour, and dried to form a film with a solid content of 6%. Determination of slurry viscosity and mechanical properties of the size film are shown in Table 1.

Embodiment 2

[0019] Weigh 85 parts of wheat raw starch, add 340 parts of deionized water, stir evenly to form starch milk, ultrasonicate at room temperature for 25 minutes, filter and dry, then add 15 parts of methyl acrylate, 0.038 parts of ammonium persulfate, and 0.007 parts of potassium persulfate , 200 parts of deionized water, fully stirred, placed under the microwave synthesis device, adjusted the power of the microwave oven to control the temperature at 40°C and continued to stir. After 20 minutes of grafting reaction, discharge, cool, filter, wash with water, dry, and pulverize to obtain a powder Methyl acrylate grafted starch. Dried to obtain powdery AM grafted starch. Methyl acrylate grafted starch was boiled at 95° C. for 1 hour and dried to form a film. The solid content of the slurry was 6%.

[0020] Determination of slurry viscosity and mechanical properties of the size film are shown in Table 1.

Embodiment 3

[0022] Weigh 90 parts of cassava raw starch, add 360 parts of deionized water, stir evenly to form starch milk, ultrasonicate at room temperature for 25 minutes, filter and dry, then add 10 parts of methyl acrylate, 0.056 parts of ammonium persulfate, 0.07 parts of potassium persulfate Parts, 200 parts of deionized water, fully stirred, placed under the microwave synthesis device, adjusted the power of the microwave oven to control the temperature at 40°C and continued to stir. After 20 minutes of grafting reaction, the material was discharged, cooled, filtered, washed, dried, and crushed to obtain a powder Methyl acrylate grafted starch. The AM grafted starch was boiled at 95°C for 1 hour, and dried to form a film with a solid content of 6%.

[0023] Determination of slurry viscosity and mechanical properties of the size film are shown in Table 1.

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Abstract

The invention discloses methyl acrylate grafted starch slurry synthesized by an ultrasound microwave method. The methyl acrylate grafted starch slurry is prepared from starch and methyl acrylate (MA) in the weight part ratio of (70.0-90.0):(10.0-30.0) by the ultrasound-microwave method, and has the advantages of simple method, short synthesizing time and low energy consumption. The starch slurry has high adhesion to polyester / cotton blended yarns and synthesized fibers, low viscosity and low sensitivity to environment humidity, and can replace polyvinyl alcohol (PVA) slurry which is unfriendly to environment; and the cost of the slurry is reduced.

Description

technical field [0001] The invention relates to the field of textile size, in particular to a methyl acrylate grafted starch size and a preparation method thereof. Background technique [0002] Starch is a polysaccharide natural polymer with a wide range of sources and low price. It has been the main size of pure cotton warp yarn for a long time. Because the rigid macromolecule composed of cyclic units with glucose residues on the starch molecular chain has two high molecules and is rich in hydroxyl groups, the hydrogen bond between molecules is strong, making it insoluble in cold water and can only be expanded in water above the gelatinization temperature. Paste, high viscosity, poor fluidity, hard and brittle serous film, poor adhesion to synthetic fibers. [0003] In order to improve the properties of starch, modified starch has appeared, such as pyrolysis, acid hydrolysis, oxidized starch, etc., to degrade starch macromolecules, thereby reducing the viscosity in water, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/11C08F251/00C08F2/46C08F2/56
Inventor 邱绪良巫拱生
Owner 四川海旺科技有限公司
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