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Method for synthesizing starch microsphere

A synthesis method and technology of starch microspheres, which are applied in the field of chemical products, can solve the problems of long synthesis time and high cost of starch microspheres, and achieve the effects of narrow particle size distribution, low cost and short synthesis time.

Inactive Publication Date: 2005-12-28
SHAANXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The invention solves the problems of long synthesis time and high cost of starch microspheres

Method used

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  • Method for synthesizing starch microsphere
  • Method for synthesizing starch microsphere

Examples

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Embodiment Construction

[0005] Take 7g of potato starch and add water to make a paste, and activate it at pH=10, 80°C for 0.5h. Add 100ml of vegetable oil, 0.4gspan60, and heat to dissolve at 60°C in a three-necked flask. Add the activated starch and stir at high speed. After the starch is fully dispersed, add a certain amount of cross-linking agent and initiator to react at a certain temperature for 4 hours.

[0006] Pour out the vegetable oil, fully wash the product with ethyl acetate, filter under reduced pressure, and dry the obtained product under reduced pressure at 60°C to finally obtain white to light yellow starch microspheres with a particle size of 50 μm and a narrow distribution range. The adsorption amount of methylene blue is about 2g / g (the adsorption amount of different model drugs is different).

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Abstract

The invention relates to a chemical product, in particular to a method for synthesizing an adsorbent, that is, a method for synthesizing starch microspheres. The invention synthesizes starch microspheres in a dispersant at a certain temperature and within a certain reaction time under the action of a high-efficiency catalyst and a surfactant. The whole reaction can be completed within 4 hours, and the ball forming time is within 1 hour. The reaction time is short, the monomer price is low, and the cost of the obtained microspheres is greatly reduced compared with the existing products, which makes it possible to develop starch microspheres in a wider field. . In addition to being used as a drug carrier, the obtained microspheres can also be used as adsorbents for various substances such as essences, as well as diet foods, paper strengthening agents, sewage treatment agents, and the like.

Description

(1) Technical field [0001] The invention relates to a chemical product, in particular to a method for synthesizing an adsorbent, that is, a method for synthesizing starch microspheres. (2) Background technology [0002] The current starch microspheres take too long to synthesize (generally more than 10 hours), and the monomers and additives used are also expensive, so the cost is too high. For a long time, it can only be used as a drug carrier, but cannot Other fields have been fully applied. (3) Contents of the invention [0003] The invention solves the problems of long synthesis time and high cost of starch microspheres. The present invention is accomplished through the following steps: (1) adding water to ordinary starch to make a paste, and activating the starch for 0.5h at pH = 10 and 80°C to obtain the ready-to-use refined starch: (2) selecting suitable propylene Amide monomer, so that it can undergo a cross-linkin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F251/00C08J3/12
Inventor 李仲谨马素德郝明德杨芳娥魏红杨莲丽苏秀霞白国强朱敏郭炎
Owner SHAANXI UNIV OF SCI & TECH
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