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: 2004-06-09
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 present invention relates to a method for synthesizing starch microsphere as adsorption agent, and it is characterized by that the starch microsphere can be synthesized at a certain temperature, in a certain reaction time, under the action of high-effective catalyst and surfactant in the dispersing agent, and the whole reaction can be made within 4 hr, and the sphere-forming time is within an hour. Said invented microsphere can be used as medicine carrier, adsorption agent of several substances of perfume compound, etc. reinforcing agent of weight-reducing food and paper and sewage treating agent, etc.

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 then activating it for 0.5h at pH=10 and starch activation temperature of 80°C to obtain the ready-to-use refined starch: (2) selection Appropriate acrylamide monomers to make cross-l...

Claims

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Application Information

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Patent Type & Authority Applications(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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