Absorbable starch styptic powder, preparation method and applications thereof
A hemostatic powder, absorbable technology, applied in the field of absorbable starch hemostatic powder and its preparation, can solve the problems of limited application, high price, long degradation time, etc., and achieves the reduction of blood flow speed, simple and convenient use, and biocompatibility. good effect
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Embodiment 1
[0020] 1) Dissolve 0.2g of potato starch and 10g of hydroxymethyl starch in 300ml of distilled water, stir well and adjust the pH to 9-10 with sodium hydroxide to prepare a mixed starch suspension;
[0021] 2) Dissolve 4.5g of Span 80 and Tween 80 in 800ml of vegetable oil and stir at 50±5°C for 20 minutes to prepare a mixed emulsified dispersant, then add it to the mixed starch suspension and stir for 20 minutes to prepare a mixed starch emulsified liquid;
[0022] 3) Weigh 0.2g of sodium trimetaphosphate and dissolve it in distilled water, then add it into the mixed starch emulsion, stir and cross-link for 3 hours to obtain a cross-linking liquid;
[0023] 4) Leave the cross-linking liquid to stand for stratification, discard the supernatant, add 5 times the volume of ethyl acetate to the milky white liquid in the lower layer, stir evenly, let stand for stratification, remove the milky white liquid in the lower layer, add 3 times the volume of absolute ethanol to wash , aft...
Embodiment 2
[0026] 1) Weigh 10g of potato starch, dissolve 10g of hydroxymethyl starch in 600ml of distilled water, stir well and adjust the pH to 9-10 with sodium hydroxide to prepare a mixed starch suspension;
[0027] 2) Dissolve 10g of Span 80 and Tween 80 in 1200ml of vegetable oil, stir at 50±5°C for 20min to prepare a mixed emulsified dispersant, then add it to the mixed starch suspension and stir for 20min to prepare a mixed starch emulsion ;
[0028] 3) Weigh 1.0 g of sodium trimetaphosphate and dissolve it in distilled water, then add it into the mixed starch emulsion, stir and cross-link for 5 hours to obtain a cross-linking liquid;
[0029] 4) Leave the cross-linking liquid to stand for stratification, discard the supernatant, add 5 times the volume of ethyl acetate to the milky white liquid in the lower layer, stir evenly, then let it stand for stratification, remove the milky white liquid in the lower layer, add 3 times the volume of absolute ethanol to wash , after stirrin...
Embodiment 3
[0032] 1) Weigh 5g of potato starch, dissolve 10g of hydroxymethyl starch in 450ml of distilled water, stir well and adjust the pH to 9-10 with sodium hydroxide to prepare a mixed starch suspension;
[0033] 2) Dissolve 6g of Span 80 and Tween 80 in 800ml of vegetable oil, stir at 50±5°C for 20 minutes to prepare a mixed emulsified dispersant, then add it to the mixed starch suspension and stir for 20 minutes to prepare a mixed starch emulsion ;
[0034] 3) Weigh 0.5g of sodium trimetaphosphate and dissolve it in distilled water, then add it into the mixed starch emulsion, stir and cross-link for 3 hours to obtain a cross-linking liquid;
[0035] 4) Leave the cross-linking liquid to stand for stratification, discard the supernatant, add 5 times the volume of ethyl acetate to the milky white liquid in the lower layer, stir evenly, let stand for stratification, remove the milky white liquid in the lower layer, add 3 times the volume of absolute ethanol to wash , after stirring ...
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