FIELD: chemistry.
SUBSTANCE: raw material used is wheat straw cellulose which undergoes preliminary partial hydrolysis. Hydrolysis is carried out with a solution containing 6.4% hydrogen peroxide, 23.6% acetic acid, 0.2% sulphuric acid at temperature 100°C, hydromodulus 10 in 2 hours. The mass is then suspended in pyridine for 12 hours. Sulphation is carried out at 80-85°C for 1.5-2.0 hours. The product is separated, washed with ice water and added to a sodium salt. The aqueous solution is decanted and the end product is washed with ethanol, filtered and dried.
EFFECT: invention simplifies the method of producing sulphated cellulose by cutting the duration of sulphation.
1 tbl, 4 ex
| Title | Year | Author | Number |
|---|---|---|---|
| MICROCRYSTALLINE CELLULOSE SULPHATION METHOD | 2009 |
|
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| AGENT WITH ANTITHROMBOTIC ACTIVITY | 2016 |
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| MICROCRYSTALLINE CELLULOSE SULPHATION METHOD | 2014 |
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| PREPARATION OF POLYFUNCTIONAL SULPHATED CELLULOSE POWDER DERIVATIVES EXHIBITING ANTICOAGULANT ACTIVITY | 2009 |
|
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| METHOD OF PRODUCING SULPHATED ARABINOGALACTAN DERIVATIVES | 2011 |
|
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| METHOD OF PRODUCING SULPHATED ARABINOGALACTAN DERIVATIVES | 2013 |
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RU2521649C1 |
| METHOD FOR SULFATION OF GALACTOGLUCOMANNAN IN PINE WOOD WITH SULFAMIC ACID | 2022 |
|
RU2787219C1 |
| METHOD FOR SULPHATING LARCH WOOD ARABINOGALACTAN WITH SULFAMIC ACID | 2021 |
|
RU2760432C1 |
| METHOD OF OBTAINING SULPHATED DERIVATIVES OF ARABINOGALACTAN | 2014 |
|
RU2546965C1 |
| METHOD FOR PRODUCING OF FINE-GRAIN CELLULOSE FROM CEREALS STRAW | 2006 |
|
RU2312110C1 |
