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Starch-acrylate-pullulan semi-interpenetrating network polymer and preparation method

A technology of pullulan polysaccharide and semi-interpenetrating network, which is applied in the field of starch-acrylate-pullulan polysaccharide semi-interpenetrating network polymer materials and its preparation, to achieve good stability, good water retention, repeatability, and water absorption performance excellent effect

Active Publication Date: 2018-11-06
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no report on the introduction of pullulan into the starch backbone to obtain semi-interpenetrating network polymeric materials.

Method used

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  • Starch-acrylate-pullulan semi-interpenetrating network polymer and preparation method
  • Starch-acrylate-pullulan semi-interpenetrating network polymer and preparation method
  • Starch-acrylate-pullulan semi-interpenetrating network polymer and preparation method

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Embodiment 1

[0035] A starch-acrylate-pullulan semi-interpenetrating network polymer material in this embodiment is prepared by the following method:

[0036] (1) Weigh 2g of potato starch, add 10mL of distilled water to make a starch suspension, put it in a water bath at 80°C for 30 minutes after gelatinization, and cool it for later use. Be sure to stir the gelatinized starch evenly while it is hot, otherwise the gelatinized starch will Agglomerates are not easy to stir evenly.

[0037] (2) Take 10 mL of acrylic acid and add an equal volume of distilled water, place it on a magnetic stirrer, add 22 mL of sodium hydroxide solution with a mass fraction of 20% dropwise while stirring, and adjust the neutralization degree of acrylic acid to 80%.

[0038] (3) Weigh 0.4g pullulan, and then neutralize the acrylic acid, pullulan, 2mL potassium persulfate solution (m / m, 1%), 1.5mL aluminum chloride solution (m / m, 1%) into the gelatinized starch and stir evenly. Note that when adding the pullulan...

Embodiment 2

[0040] A starch-acrylate-pullulan semi-interpenetrating network polymer material in this embodiment is prepared by the following method:

[0041] (1) Weigh 2g of potato starch, add 7mL of distilled water to make a starch suspension, put it in a water bath at 70°C for 30 minutes after gelatinization, and cool it for later use. Be sure to stir the gelatinized starch evenly while it is hot, otherwise the gelatinized starch will Agglomerates are not easy to stir evenly.

[0042] (2) Take 6 mL of acrylic acid and add an equal volume of distilled water, place it on a magnetic stirrer, add 12 mL of sodium hydroxide solution with a mass fraction of 20% dropwise while stirring, and adjust the neutralization degree of acrylic acid to 90%.

[0043] (3) Weigh 0.2g pullulan, and successively mix neutralized acrylic acid, pullulan, 1mL potassium persulfate solution (m / m, 1%), 0.5mL aluminum chloride solution (m / m, 1%) into the gelatinized starch and stir evenly. Note that when adding the p...

Embodiment 3

[0045] A starch-acrylate-pullulan semi-interpenetrating network polymer material in this embodiment is prepared by the following method:

[0046] (1) Weigh 2g of potato starch, add 13mL of distilled water to make a starch suspension, put it in a water bath at 75°C for 30 minutes after gelatinization, and cool it for later use. Be sure to stir the gelatinized starch evenly while it is hot, otherwise the gelatinized starch will Agglomerates are not easy to stir evenly.

[0047] (2) Take 11 mL of acrylic acid and add an equal volume of distilled water, place it on a magnetic stirrer, add 19 mL of sodium hydroxide solution with a mass fraction of 20% dropwise while stirring, and adjust the neutralization degree of acrylic acid to 70%.

[0048] (3) Weigh 0.6g pullulan, and successively mix neutralized acrylic acid, pullulan, 2.5mL potassium persulfate solution (m / m, 1%), 2mL aluminum chloride solution (m / m, 1%) into the gelatinized starch and stir evenly. Note that when adding the...

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Abstract

The invention belongs to the technical field of composites and discloses a starch-acrylate-pullulan semi-interpenetrating network polymer and a preparation method. The preparation method comprises thefollowing steps: adding starch to distilled water, performing heating for gelatinization and performing stirring uniformly to obtain gelatinized starch; adding acrylic acid to distilled water, and adding dropwise an alkaline solution until the neutralization degree is 70%-90% to obtain an acrylate solution; sequentially adding the acrylate solution, pullulan, a initiator and a cross-linking agentto gelatinized starch under stirring, putting the mixture in a microwave reactor for reaction, and washing, drying and pulverizing the reaction product to obtain the product. The starch-acrylate-pullulan semi-interpenetrating network polymer has excellent water absorption performance and good water retention and repetitive operability, and can be used as a novel biological material in biomedicineand pharmaceutical technology or as a moisturizing material in the agricultural field, as well as used for food preservation.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a starch-acrylate-pullulan semi-interpenetrating network polymer material and a preparation method. Background technique [0002] Starch is a natural and renewable material with a wide range of sources, low price, and biodegradability. It has been extensively researched and developed in various fields. It is difficult to use alone as a polymer material, and it needs to be restructured to enhance its function or form new physical and chemical properties. Interpenetrating network polymer (IPN) is a special structure formed by interpenetrating and entanglement of two or more polymers. It is a new polymer processing technology emerging in recent years. It is characterized by forced mutual compatibility through chemical crosslinking, so that the polymers are entangled with each other and form an interpenetrating polymer network, thereby increasing the compatib...

Claims

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Application Information

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IPC IPC(8): C08F251/00C08F220/06C08J3/24C08L3/02C08L5/00C08K3/16
CPCC08F251/00C08J3/246C08J2303/02C08J2405/00C08K2003/164C08F220/06
Inventor 胡飞赵芬
Owner SOUTH CHINA UNIV OF TECH
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