Starch polyiodide and preparation method and application thereof

A technology of high polyiodine and starch, applied in the direction of botany equipment and methods, applications, chemicals for biological control, etc., can solve the problems of difficult waste disposal, peculiar smell, high disinfection cost, etc., and achieve the degree of polymerization and water solubility Controllable properties, recyclable mother liquor, and avoiding excess iodine

Active Publication Date: 2016-10-12
CHANGZHOU GARDENSUN ANTI BACTERIAL MATERIALS TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high polyiodine resin has the following disadvantages: First, it has poor stability and high solubility in water, so after it is used for disinfection, the amount of residual iodine in the water will seriously exceed the standard, and there will be peculiar smell, which will not only cause waste of iodine resources, but also lead to iodine pollution. Poisoning; second, the high polyiodine content of the resin cannot be completely dissolved in water, and cannot be used in many disinfection processes; third, the resin used in the preparation has certain toxicity, and is difficult to degrade, and its waste is difficult to handle; fourth, the resin price is high, resulting in high cost of disinfection

Method used

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  • Starch polyiodide and preparation method and application thereof
  • Starch polyiodide and preparation method and application thereof
  • Starch polyiodide and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 prepares cross-linked starch high polyiodine

[0033] Has the following steps:

[0034] (1) Starch gelatinization: Add 8g of cross-linked starch into a three-necked bottle, add 40ml of distilled water to mix, stir, and heat to 100°C until gelatinization forms a transparent colloidal solution (48g). The gelatinization time is 30min. use;

[0035] (2) Preparation of liquid cross-linked starch with high iodine concentration: the colloidal solution (48g) prepared in step (1) is cooled to 70°C, and then potassium iodide, iodine, and citric acid are added to the colloidal solution successively, wherein, iodine, The mass ratios of potassium iodide, stabilizer citric acid and the colloidal solution are 0.032, 0.0052, 0.0021 respectively, and react at constant temperature for 30 minutes to obtain liquid cross-linked starch high polyiodine;

[0036] (3) Preparation of solid cross-linked starch highly iodized: cool the liquid cross-linked starch obtained in step (2)...

Embodiment 2

[0041] Embodiment 2 prepares water-soluble starch high polyiodine

[0042] Has the following steps:

[0043] (1) Starch gelatinization: Add 8g of water-soluble starch into a three-necked bottle, add 50ml of distilled water to mix, stir, and heat to 95°C until gelatinization forms a transparent colloidal solution. The gelatinization time is 25min and is ready for use;

[0044] (2) Preparation of liquid water-soluble starch with high iodine concentration: cool the colloidal solution (58g) prepared in step (1) to 80°C, and then sequentially add sodium iodide, iodine, and oxalic acid to the colloidal solution, wherein, iodine , sodium iodide, stabilizer oxalic acid and the mass ratio of the colloidal solution are 0.026, 0.0043, 0.0026 respectively, and react at a constant temperature for 50 minutes to obtain liquid water-soluble starch polyiodine;

[0045] (3) Preparation of solid water-soluble starch highly iodine: cool the liquid water-soluble starch highly iodine obtained in ste...

Embodiment 3

[0050] Embodiment 3 prepares amylose high polyiodine

[0051] Has the following steps:

[0052] (1) Starch gelatinization: Add 8g of amylose in a three-neck bottle, add 50ml of distilled water to it, mix, stir, heat to boiling, until gelatinization forms a transparent colloidal solution, gelatinization time is 40min, stand-by;

[0053] (2) Preparation of liquid amylose with high iodine concentration: the colloidal solution (58g) prepared in step (1) is cooled to 70°C, and then potassium iodide, iodine, and acetic acid are added to the colloidal solution successively, wherein, iodine, potassium iodide 1. The mass ratio of the stabilizer acetic acid to the colloidal solution is 0.026, 0.0086, 0.0026 respectively, and react at a constant temperature for 60 minutes to obtain liquid amylose high polyiodine;

[0054] (3) Preparation of solid amylose highly iodine: the liquid amylose iodine obtained in step (2) is cooled to 80° C., and then 80 ml of precipitant ethanol is added to t...

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Abstract

The invention relates to starch polyiodide and a preparation method and application thereof. The starch polyiodide is a polymer complex formed by the coordination of oxygen-containing groups in starch molecules with polyiodide molecules; the preparation method includes: (1), gelatinizing starch; (2), coordinating the gelatinized starch with iodine, iodides and a stabilizer to produce liquid starch polyiodide; (3), adding a precipitant to precipitate and separate the liquid starch polyiodide, filtering, and drying with filter cakes to obtain powdery starch polyiodide; (4), reusing filtrate. As a disinfectant, the starch polyiodide has the characteristics such as water solution controllability, high sterilizing efficiency, good stability, good safety and convenience of use, good degradability and low sterilizing cost and is a green new-generation disinfectant; by means of adding, spraying, impregnating, applying, washing or fumigating, the disinfectant may be used in disinfection of drinking water and aquaculture water, medical disinfection, environmental disinfection, vegetable and fruit disinfection, food preservation, mold prevention, plant disease prevention and treatment and the like.

Description

technical field [0001] The invention relates to a kind of high iodine content of starch and its preparation method and application. Background technique [0002] Disinfection of drinking water is an important guarantee of public health safety. At present, the disinfection of drinking water still mainly uses chlorine disinfectant. However, studies in recent years have shown that chlorine disinfectants and the halides formed with certain organic substances in water have carcinogenic and mutagenic effects. Drinking water containing these substances for a long time will pose a threat to our health. [0003] High polyiodine is currently recognized as a safe and efficient disinfectant, and its research, preparation and application are one of the hot spots in the field of disinfection in recent years. At present, the highly polyiodine used for disinfection at home and abroad is mainly resin polyiodine, such as the resin polyiodine prepared by patents US 4187183, US 5431908, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08B31/00C08B35/00C08B33/00A01N59/12A01P1/00
CPCA01N59/12C08B31/00C08B33/00C08B35/00
Inventor 王婧薛永强王雪平崔子祥李文姣郝燕芝
Owner CHANGZHOU GARDENSUN ANTI BACTERIAL MATERIALS TECH
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