CN105418776A - Preparation process of propionylated starch - Google Patents
Preparation process of propionylated starch Download PDFInfo
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- CN105418776A CN105418776A CN201510950737.4A CN201510950737A CN105418776A CN 105418776 A CN105418776 A CN 105418776A CN 201510950737 A CN201510950737 A CN 201510950737A CN 105418776 A CN105418776 A CN 105418776A
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- Prior art keywords
- solution
- starch
- propionate
- preparation technology
- water
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B31/00—Preparation of derivatives of starch
- C08B31/02—Esters
- C08B31/04—Esters of organic acids, e.g. alkenyl-succinated starch
Abstract
The invention discloses a preparation process of propionylated starch. The preparation process comprises the steps of mixing starch with distilled water for dissolving, then pouring an NaOH solution to enable PH of a solution system to be kept between 8 and 9, adding a certain amount of vinyl propionate into the system, heating, sufficiently cleaning with an acetone solution and clear water in sequence, and finally drying, thus obtaining the propionylated starch after sufficient drying.
Description
Technical field
The present invention relates to a kind of modified starch, particularly a kind of with water chestnut starch for the technique of propionate starches prepared by raw material, belong to chemical industry synthesis field.
Background technology
Starch, as a kind of natural resource of extensive existence, has become important industrial raw material.Some inherent naturies due to native starch: cold water is insoluble, stick with paste liquid in acid, heat, unstable etc. under shearing action, limit application in the industry, therefore people develop the sex change technology of starch according to the structure of starch and physico-chemical property, namely use the method for physics, chemistry and enzyme, ative starch is processed, make it have the character of certain special purpose applicable, this process is exactly the sex change of starch, and its product is exactly modified starch.Modified starch has unique good characteristic, is widely used in the fields such as weaving, food, papermaking, same to articles for use, makeup, industrial and agricultural production.How further controlled denaturation starch denaturalization degree, expansion sex change kind, the raw material input amount that reduces, reduction byproduct of reaction productive rate, be all significant for performance, the raising economic benefits improving modified starch.
The output of current whole world modified starch is about 7,000,000 tons, wherein about 2,600,000 tons, the U.S., about 1,000,000 tons, European Union.In recent years, modified starch has had in China and has developed faster, and be widely used in industrial production, range of product has expanded to tens series up to a hundred kinds.Esterification starch is exactly the one in modified starch, due to its distinctive character, is applied widely in the industry.Esterification starch just refers to the class modified starch that the hydroxyl in starch structure is obtained by organic acid or mineral acid esterification.
Different according to the sour kind that esterification occurs, be divided into two large classes: one is starch organic acid acetic, and two is starch inorganic acid esters.Starch organic ester is the kind of starch derivative utilizing the hydroxyl of starch and organic acid (acid anhydride) to be generated by esterification, and starch organic ester is widely used in all trades and professions as degradable, ep-type material.Hydrophobicity due to general organic acid acetic can improve the sizing performance of starch to hydrophobic synthetic fibre, therefore the use of organosilane ester modified starch in textile warp starching is particularly noticeable.They, while the excellent biodegradability of succession ative starch, also in the defect improving ative starch in varying degrees, compensate for the deficiency of ative starch in slashing process.
Water chestnut is containing a large amount of starch, and starch accounts for more than 86% of dry weight, and the present invention for raw material with natural water chestnut starch, adds propionate, prepares a kind of propionate starches, and its preparation technology is simple, and yield rate is high.
Summary of the invention
The object of this invention is to provide a kind of with water chestnut starch for the technique of propionate starches prepared by raw material, its step of preparation process is as follows:
(1) a certain amount of water chestnut ative starch is loaded in container, add distilled water, and constantly stir with agitator, starch small grain is dissolved in water;
(2) pour the NaOH solution of certain solubility again into, the pH value of regulator solution;
(3), under continuous agitation condition, add propionate, reacting by heating for some time;
(4) add the HCl solution of certain solubility again toward solution system, the pH value of adjustment solution is neutral;
(5) again solution is filtered, and collects filtration product,
(6) product is poured in acetone soln, refilters,
(7) again precipitation is washed with water, and filter;
(8) filtration product is put into loft drier and carry out drying, after drying, namely obtain a kind of propionate starches.
Preferentially, step (2) in, the solubility of NaOH solution is 1-2mol/mL.
Preferentially, step (2) in, the PH of regulator solution controls between 8-9.
Preferentially, step (3) in, temperature of reaction is between 40-50 DEG C, and time controling is at 30-60 minute.
Preferentially, step (4) in, the solubility of HCl solution is 1-1.5mol/mL.
Preferentially, step (8) in, drying temperature is 50-60 DEG C.
The present invention has following advantages and characteristic:
(1) preparation technology is simple, flow process is short;
(2) abundant raw material, cheap.
Embodiment
Embodiment one:
10g water chestnut ative starch is loaded in container, 100ml distilled water, and constantly stir with agitator, starch small grain is made to dissolve fully in water, pour the NaOH solution of 1mol/mL again into, the pH value of regulator solution is between 8-9, under continuous agitation condition, add the propionate of 15g, solution is reacted 60 minutes under 40 DEG C of conditions, the HCl solution of 1mol/mL is added again toward solution system, the pH value of adjustment solution is neutral, again solution is filtered, filtration product is poured in acetone soln, refilter, again precipitation is washed with water, and filter, the loft drier finally filtration product being put into 50 DEG C of environment carries out drying, namely a kind of propionate starches is obtained after drying fully.
Embodiment two:
20g water chestnut ative starch is loaded in container, 200ml distilled water, and constantly stir with agitator, starch small grain is made to dissolve fully in water, pour the NaOH solution of 2mol/mL again into, the pH value of regulator solution is between 8-9, under continuous agitation condition, add the propionate of 30g, solution is reacted 50 minutes under 40 DEG C of conditions, the HCl solution of 1.5mol/mL is added again toward solution system, the pH value of adjustment solution is neutral, again solution is filtered, filtration product is poured in acetone soln, refilter, again precipitation is washed with water, and filter, the loft drier finally filtration product being put into 50 DEG C of environment carries out drying, namely a kind of propionate starches is obtained after drying fully.
Embodiment three:
50g water chestnut ative starch is loaded in container, 500ml distilled water, and constantly stir with agitator, starch small grain is made to dissolve fully in water, pour the NaOH solution of 1.5mol/mL again into, the pH value of regulator solution is between 8-9, under continuous agitation condition, add the propionate of 60g, solution is reacted 30 minutes under 50 DEG C of conditions, the HCl solution of 1.5mol/mL is added again toward solution system, the pH value of adjustment solution is neutral, again solution is filtered, filtration product is poured in acetone soln, refilter, again precipitation is washed with water, and filter, the loft drier finally filtration product being put into 60 DEG C of environment carries out drying, namely a kind of propionate starches is obtained after drying fully.
Claims (6)
1. a preparation technology for propionate starches, is characterized in that, this preparation technology comprises the steps:
(1) a certain amount of water chestnut ative starch is loaded in container, add distilled water, and constantly stir with agitator, starch small grain is dissolved in water;
(2) pour the NaOH solution of certain solubility again into, the pH value of regulator solution;
(3), under continuous agitation condition, add propionate, reacting by heating for some time;
(4) add the HCl solution of certain solubility again toward solution system, the pH value of adjustment solution is neutral;
(5) again solution is filtered, and collects filtration product,
(6) product is poured in acetone soln, refilters,
(7) again precipitation is washed with water, and filter;
(8) filtration product is put into loft drier and carry out drying, after drying, namely obtain a kind of propionate starches.
2. the preparation technology of a kind of propionate starches according to claim 1, is characterized in that, step (2) in, the solubility of NaOH solution is 1-2mol/mL.
3. the preparation technology of a kind of propionate starches according to claim 1, is characterized in that, step (2) in, the PH of regulator solution controls between 8-9.
4. the preparation technology of a kind of propionate starches according to claim 1, is characterized in that, step (3) in, temperature of reaction is between 40-50 DEG C, and the reaction times controls at 30-60 minute.
5. the preparation technology of a kind of propionate starches according to claim 1, is characterized in that, step (4) in, the solubility of HCl solution is 1-1.5mol/mL.
6. the preparation technology of a kind of propionate starches according to claim 1, is characterized in that, step (8) in, drying temperature is 50-60 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950737.4A CN105418776A (en) | 2015-12-19 | 2015-12-19 | Preparation process of propionylated starch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510950737.4A CN105418776A (en) | 2015-12-19 | 2015-12-19 | Preparation process of propionylated starch |
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| CN105418776A true CN105418776A (en) | 2016-03-23 |
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| CN201510950737.4A Pending CN105418776A (en) | 2015-12-19 | 2015-12-19 | Preparation process of propionylated starch |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970878A (en) * | 2019-03-04 | 2019-07-05 | 华南理工大学 | A kind of propionating resistant starch and the preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6001927A (en) * | 1998-09-16 | 1999-12-14 | National Starch And Chemical Investment Holding Corporation | Thixotropic paint compositions containing hydrophobic starch derivatives |
| CN101362804A (en) * | 2008-09-28 | 2009-02-11 | 东北林业大学 | Acetyl starch with high degree of substitution and preparation method thereof |
| CN103145862A (en) * | 2013-04-10 | 2013-06-12 | 郑桂富 | Preparation method of acetyl starch propionate |
-
2015
- 2015-12-19 CN CN201510950737.4A patent/CN105418776A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6001927A (en) * | 1998-09-16 | 1999-12-14 | National Starch And Chemical Investment Holding Corporation | Thixotropic paint compositions containing hydrophobic starch derivatives |
| CN101362804A (en) * | 2008-09-28 | 2009-02-11 | 东北林业大学 | Acetyl starch with high degree of substitution and preparation method thereof |
| CN103145862A (en) * | 2013-04-10 | 2013-06-12 | 郑桂富 | Preparation method of acetyl starch propionate |
Non-Patent Citations (1)
| Title |
|---|
| 张惠: ""淀粉与丙酸乙烯酯水相酯化反应的研究"", 《合成技术及应用》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109970878A (en) * | 2019-03-04 | 2019-07-05 | 华南理工大学 | A kind of propionating resistant starch and the preparation method and application thereof |
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Application publication date: 20160323 |
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