CN102827296A - Method for producing compound modified starch - Google Patents
Method for producing compound modified starch Download PDFInfo
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- CN102827296A CN102827296A CN201210310824XA CN201210310824A CN102827296A CN 102827296 A CN102827296 A CN 102827296A CN 201210310824X A CN201210310824X A CN 201210310824XA CN 201210310824 A CN201210310824 A CN 201210310824A CN 102827296 A CN102827296 A CN 102827296A
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Abstract
The invention relates to the field of chemical adhesive, in particular to a method for producing compound modified starch. The method solves problems that existing modified starch is treated by a modification method mostly, is narrow in application range and poor in practicality, and the like. The method includes steps of (1), mixing starch with water to blend into starch slurry; (2), adding sodium hypochlorite into the starch slurry to perform oxidization reaction; (3), adding dimethylol urea which is a crosslinking agent into the mixture to perform crosslinking reaction; (4), regulating the pH (potential of hydrogen) value of the slurry to range from 7.5 to 8.5 after the reaction; and (5), performing wet screening and washing for the slurry obtained in the step (4), and then feeding the slurry into a pre-gelatinization drying machine to dehydrate and dry. Carboxyl is added into starch molecules during reaction, so that the starch molecules have the characteristics of hydrophilicity and lipophilicity and have good emulsification and dispersion effects. In addition, the dimethylol urea is added into the starch molecules for performing the crosslinking reaction, so that the compound modified starch has the advantages of stable viscosity, high water absorption, shearing resistance and alkali resistance, good film-forming property and the like, and can be applied to various fields.
Description
Technical field
The present invention relates to chemical industry sizing agent field, be specially a kind of method of producing composite modified starch.
Background technology
Though the history of using at China's starch is very long, for various reasons, the research and development of China's starch and modified starch, production application etc. are quite backward; National starch YO was merely 280,000 tons up to 1978; Modified starch almost is blank, and that is latter stage in age, the improvement of national grain situation; For the development of starch and modified starch provide maybe, and the raising of expanding economy, various product class necessitates it.Development, present national starch yield through surplus 30 years are 3,000,000 tons, promptly per capita 2.5 kilograms, but with 25 kilograms per capita in Japan, the U.S. per capita 66 kilograms to compare gap also very big.It is equally very big that the 20-30% that modified starch accounts for the starch total amount compares gap.And the kind of China's modified starch is few, more lacks the high-grade kind of high quality, and annual modified starch import volume is also very big, and it is very necessary therefore to implement the modified starch research and development.
After starch handled through chemistry or physical method, part of hydroxyl in the starch molecule is substituted or derives, thereby changed many character of starch, be called modified starch with this starch of processing.The working method of modified starch has wet method, dry method and cooking process at present; Wherein wet method is to be the basis with starch and water or other liquid medium furnishing milk of starch; Carry out modified-reaction with chemical reagent under certain condition; Generate the process of modified starch, starch granules is in non-gelatinization state in this process.In that starch is carried out in the denaturation process,, can obtain different qualities and the modified starch that uses meaning to the different treatment of starch.Great majority all are to utilize a kind of denaturation method that starch is handled at present, can not satisfy many-sided demand fully, and Application Areas is narrower, adopts two or more denaturation method that starch is handled, and can obtain composite modified starch.For starch performance more can adapt to the demand of Application Areas, starch is carried out complex denaturation become effective means.
Summary of the invention
Problems such as the present invention is to utilize a kind of denaturation method that starch is handled in order to solve existing modified starch mostly, and Application Areas is narrow, and practicality is relatively poor provide a kind of method of producing composite modified starch.
The present invention adopts following technical scheme to realize: a kind of method of producing composite modified starch may further comprise the steps: mix starch (1) with water, the furnishing starch slurry, and the quality percentage composition of starch is 50 ~ 60% in the said starch slurry; (2) in the starch slurry that step (1) obtains, add the chlorine bleach liquor, dosage was 4 ~ 6% of a starch weight percent, 40 ~ 65 ℃ of oxidizing reactions 2 ~ 3 hours; (3) in the mixture that step (2) reaction obtains, add the linking agent dimethylolurea, carried out crosslinking reaction 2.5 ~ 3.5 hours at 30 ~ 50 ℃, the linking agent dosage is 0.1 ~ 0.5% of a starch weight percent; (4) after reaction finishes, regulate slurry pH value to 7.5 ~ 8.5; (5) slurry that obtains is carried out wet screening, washing, import then that preparatory gelatinization drying machine dewaters, drying under 150 ~ 170 ℃, promptly obtain composite modified starch according to the invention.
Said starch is yam starch or tapioca(flour).
Method for preparing composite modified starch provided by the invention; In reaction process, introduced carboxyl, made starch molecule possess hydrophilic, lipophilic characteristics, had good emulsifying, dissemination to starch molecule; Add dimethylolurea simultaneously and carry out crosslinking reaction; Can make the alcoholic extract hydroxyl group of starch and the polynary functional group of linking agent form two ehter bonds, make that the composite modified starch make has that stable viscosity, water-absorbent are strong, anti-shearing force, alkali resistant by force, characteristics such as not retrogradation, good film-forming property, through starch being carried out complex denaturation; Can it be applied in a plurality of fields; Detect through professional institution, adopt the resulting composite modified starch of the present invention, physical and chemical indexs such as its whiteness, viscosity all are up to state standards.
Embodiment
Embodiment 1:
A kind of method of producing composite modified starch may further comprise the steps: mix tapioca(flour) (1) with water, the furnishing starch slurry, and the quality percentage composition of starch is 50% in the said starch slurry; (2) in the starch slurry that step (1) obtains, add the chlorine bleach liquor, dosage was 4% of a starch weight percent, 40 ℃ of oxidizing reactions 2 hours; (3) in the mixture that step (2) reaction obtains, add the linking agent dimethylolurea, carried out crosslinking reaction 2.5 hours at 30 ℃, the linking agent dosage is 0.1% of a starch weight percent; (4) after reaction finishes, regulate slurry pH value to 7.5; (5) slurry that obtains is carried out wet screening, washing, import then that preparatory gelatinization drying machine dewaters, drying under 150 ℃, promptly obtain composite modified starch according to the invention, be white, free from extraneous odour, the pH value is 4.5, viscosity stability 100%.
Embodiment 2
A kind of method of producing composite modified starch may further comprise the steps: mix yam starch (1) with water, the furnishing starch slurry, and the quality percentage composition of starch is 60% in the said starch slurry; (2) in the starch slurry that step (1) obtains, add the chlorine bleach liquor, dosage was 6% of a starch weight percent, 65 ℃ of oxidizing reactions 3 hours; (3) in the mixture that step (2) reaction obtains, add the linking agent dimethylolurea, carried out crosslinking reaction 3.5 hours at 50 ℃, the linking agent dosage is 0.5% of a starch weight percent; (4) after reaction finishes, regulate slurry pH value to 8.5; (5) slurry that obtains is carried out wet screening, washing, import then that preparatory gelatinization drying machine dewaters, drying under 170 ℃, promptly obtain composite modified starch according to the invention, be white, free from extraneous odour, the pH value is 4.0, viscosity stability 98%.
Embodiment 3:
A kind of method of producing composite modified starch may further comprise the steps: mix tapioca(flour) (1) with water, the furnishing starch slurry, and the quality percentage composition of starch is 50% in the said starch slurry; (2) in the starch slurry that step (1) obtains, add the chlorine bleach liquor, dosage was 4% of a starch weight percent, 55 ℃ of oxidizing reactions 3 hours; (3) in the mixture that step (2) reaction obtains, add the linking agent dimethylolurea, carried out crosslinking reaction 2.5 hours at 45 ℃, the linking agent dosage is 0.3% of a starch weight percent; (4) after reaction finishes, regulate slurry pH value to 8; (5) slurry that obtains is carried out wet screening, washing, import then that preparatory gelatinization drying machine dewaters, drying under 160 ℃, promptly obtain composite modified starch according to the invention, be white, free from extraneous odour, the pH value is 5.0, viscosity stability 100%.
, embodiment 4:
A kind of method of producing composite modified starch may further comprise the steps: mix yam starch (1) with water, the furnishing starch slurry, and the quality percentage composition of starch is 55% in the said starch slurry; (2) in the starch slurry that step (1) obtains, add the chlorine bleach liquor, dosage was 5% of a starch weight percent, 60 ℃ of oxidizing reactions 2.5 hours; (3) in the mixture that step (2) reaction obtains, add the linking agent dimethylolurea, carried out crosslinking reaction 3 hours at 35 ℃, the linking agent dosage is 0.4% of a starch weight percent; (4) after reaction finishes, regulate slurry pH value to 7.5; (5) slurry that obtains is carried out wet screening, washing, import then that preparatory gelatinization drying machine dewaters, drying under 155 ℃, promptly obtain composite modified starch according to the invention, be white, free from extraneous odour, the pH value is 4.5, viscosity stability 100%.
Claims (2)
1. method of producing composite modified starch is characterized in that may further comprise the steps:
(1) starch is mixed with water, the furnishing starch slurry, the quality percentage composition of starch is 50 ~ 60% in the said starch slurry;
(2) in the starch slurry that step (1) obtains, add the chlorine bleach liquor, dosage was 4 ~ 6% of a starch weight percent, 40 ~ 65 ℃ of oxidizing reactions 2 ~ 3 hours;
(3) in the mixture that step (2) reaction obtains, add the linking agent dimethylolurea, carried out crosslinking reaction 2.5 ~ 3.5 hours at 30 ~ 50 ℃, the linking agent dosage is 0.1 ~ 0.5% of a starch weight percent;
(4) after reaction finishes, regulate slurry pH value to 7.5 ~ 8.5;
(5) slurry that obtains is carried out wet screening, washing, import then that preparatory gelatinization drying machine dewaters, drying under 150 ~ 170 ℃, promptly obtain composite modified starch according to the invention.
2. a kind of method of producing composite modified starch according to claim 1 is characterized in that said starch is yam starch or tapioca(flour).
Priority Applications (1)
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| CN201210310824XA CN102827296A (en) | 2012-08-29 | 2012-08-29 | Method for producing compound modified starch |
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| CN201210310824XA CN102827296A (en) | 2012-08-29 | 2012-08-29 | Method for producing compound modified starch |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030698A (en) * | 2013-01-14 | 2013-04-10 | 郝庆阳 | Compound modified starch prepared by four modification methods |
| CN104045722A (en) * | 2014-06-26 | 2014-09-17 | 广西梧州市明阳生化科技有限公司 | Modified starch and production method thereof |
| CN105367673A (en) * | 2015-12-19 | 2016-03-02 | 河南恒瑞淀粉科技股份有限公司 | Oxidation crosslinking modified starch and preparation method thereof |
| CN108047341A (en) * | 2017-12-19 | 2018-05-18 | 东莞东美食品有限公司 | A kind of preparation method of rubber gloves interleaving agent converted starch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2853484A (en) * | 1954-11-16 | 1958-09-23 | Scholten Chemische Fab | Method of preparing cold swelling starch ethers and/or esters |
| CN102030832A (en) * | 2010-12-10 | 2011-04-27 | 浙江大学 | Method for preparing compound modified starch for replacing gelatin |
| CN102433084A (en) * | 2011-11-04 | 2012-05-02 | 常熟市凯力达蜂窝包装材料有限公司 | Preparation method of starch adhesive for adhering cartons |
| CN102477171A (en) * | 2010-11-26 | 2012-05-30 | 北京市农林科学院 | Modified starch binder used for granulation of organic fertilizer and preparation method thereof |
-
2012
- 2012-08-29 CN CN201210310824XA patent/CN102827296A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2853484A (en) * | 1954-11-16 | 1958-09-23 | Scholten Chemische Fab | Method of preparing cold swelling starch ethers and/or esters |
| CN102477171A (en) * | 2010-11-26 | 2012-05-30 | 北京市农林科学院 | Modified starch binder used for granulation of organic fertilizer and preparation method thereof |
| CN102030832A (en) * | 2010-12-10 | 2011-04-27 | 浙江大学 | Method for preparing compound modified starch for replacing gelatin |
| CN102433084A (en) * | 2011-11-04 | 2012-05-02 | 常熟市凯力达蜂窝包装材料有限公司 | Preparation method of starch adhesive for adhering cartons |
Non-Patent Citations (4)
| Title |
|---|
| 张友松: "《变形淀粉生产与应用手册》", 31 January 2001, article ""第四章氧化淀粉第二节反应条件一、次氯酸钠用量与氧化淀粉羧基和羰基含量的关系，第五章交联淀粉"" * |
| 徐州益等: ""氧化玉米淀粉胶的化学改性及其稳定性研究"", 《湘潭大学自然科学学报》, vol. 16, no. 4, 30 December 1994 (1994-12-30) * |
| 白小琼等: ""淀粉基木材胶粘剂研究进展"", 《粮食与食品工业》, vol. 18, no. 2, 15 April 2011 (2011-04-15) * |
| 郑文嫣等: ""新型玉米淀粉胶粘剂合成工艺对比研究"", 《粘接》, vol. 28, no. 3, 1 June 2007 (2007-06-01) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103030698A (en) * | 2013-01-14 | 2013-04-10 | 郝庆阳 | Compound modified starch prepared by four modification methods |
| CN103030698B (en) * | 2013-01-14 | 2015-10-07 | 郝庆阳 | By composite modified starch prepared by four kinds of denaturation methods |
| CN104045722A (en) * | 2014-06-26 | 2014-09-17 | 广西梧州市明阳生化科技有限公司 | Modified starch and production method thereof |
| CN104045722B (en) * | 2014-06-26 | 2016-05-25 | 广西梧州市明阳生化科技有限公司 | A kind of converted starch and production method thereof |
| CN105367673A (en) * | 2015-12-19 | 2016-03-02 | 河南恒瑞淀粉科技股份有限公司 | Oxidation crosslinking modified starch and preparation method thereof |
| CN105367673B (en) * | 2015-12-19 | 2018-07-06 | 河南恒瑞淀粉科技股份有限公司 | A kind of oxidation cross-linked modified starch and preparation method thereof |
| CN108047341A (en) * | 2017-12-19 | 2018-05-18 | 东莞东美食品有限公司 | A kind of preparation method of rubber gloves interleaving agent converted starch |
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Application publication date: 20121219 |