Oxidation-esterification-grafting three element complex denatured starch and its preparation method and application
A ternary compound, modified starch technology, applied in the directions of starch derivative coatings, starch derivative adhesives, adhesive types, etc., to achieve the effects of scientific process design, excellent product performance, and easy popularization and application.
Inactive Publication Date: 2006-05-24
JIANGNAN UNIV
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Problems solved by technology
Through literature search, there are literature reports on combining starch oxidation, esterification, and cross-linking with three-way denaturation methods, but there are no domestic and foreign literature reports on the organic combination of starch oxidation, esterification, and grafting.
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Embodiment 1
[0023] Add 1000g of starch with water to adjust the slurry to a concentration of 40% (dry basis), keep stirring, control the temperature at 35°C, adjust the pH to 8.0-9.0 with 3% sodium hydroxide solution, add 200g of sodium hypochlorite dropwise, add sodium hypochlorite dropwise for 30min, drop Add 30g of vinyl acetate, dropwise for 30min, stir for 3h after the dropwise addition, add 30g of acrylamide, 5g of potassium persulfate, stir for 1-2h, reduce with 10% sodium bisulfite, and use 5% hydrochloric acid Neutralized to neutral, washed, dehydrated and dried to obtain finished products.
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An oxidation-esterification-grafting ternary composite modified starch and its preparation method and application belong to the technical field of starch modification. The product of the present invention is prepared by applying a preparation method of simultaneously oxidizing, esterifying, and grafting modification of starch, so that it has the characteristics of oxidation, esterification, and grafting modified starch at the same time. The products are used as coating agents and sizing agents in the paper industry. The advantage of the present invention is that the three modification methods of oxidation, esterification and grafting are organically combined with almost no additional equipment, and are completed in one step in the oxidized starch production process and equipment. The process design is scientific and practical. The product performance is better than the modified starch varieties currently widely used in the paper industry, and it is easy to promote and apply.
Description
technical field [0001] An oxidation-esterification-grafting ternary compound modified starch and its preparation method and application belong to the technical field of starch modification. Background technique [0002] In China, there have been nearly 20 years of systematic research on the development and research of modified starch. In the research content, in addition to the study of single starch denaturation, there are also many studies on starch compound denaturation. But looking at these research results, it is mainly to study the method of denaturation and the analysis of product performance, but there are not many researches on product application performance, especially for productive tests in the application industry. Through literature search, there are literature reports on the combination of starch oxidation, esterification and cross-linking, but there are no domestic and foreign literature reports on the organic combination of starch oxidation, esterification...
Claims
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IPC IPC(8): C08B31/00C09D103/04C09J103/04
Inventor 顾正彪洪雁
Owner JIANGNAN UNIV
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