Preparation method of composite absorbable protein-type non-sticky foam dressing
A compound protein and foam technology, applied in pharmaceutical formulations, pharmaceutical science, drug delivery, etc., can solve the problems of cells easily growing into the pores of the dressing, loss of integrity, fluid leakage, etc., to achieve rapid and exudate absorption capacity, The effect of good integrity and high water absorption
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example 1
[0017] First, select black human hair, wash it and dry it naturally, crush it with a jet mill and sieve it, collect 75 mesh human hair powder, mix the human hair powder with 10% sodium hydroxide in mass fraction according to the mass ratio of 1:20 The solution was stirred and mixed, heated in a water bath at 75°C for 2 hours, then filtered and the filtrate was collected, adjusted to pH 7.0 with 1 mol / L hydrochloric acid, left to settle for 3 hours, then filtered and the filter cake was collected, vacuum freeze-dried, and ground to prepare human hair Keratin powder, for later use; then collect corn stalks, wash them and dry them at 75°C for 6 hours, then grind them and pass them through a 90-mesh sieve to collect corn stalk powder, then mix the corn stalks with a mass ratio of 1:20 Stir and mix the powder with 10% hydrogen peroxide solution by mass, heat in a water bath at 45°C for 2h, then let it stand and cool to room temperature, wash with deionization three times, and dry at...
example 2
[0020]First, choose black human hair, wash it and dry it naturally, crush it with a jet mill and sieve it, collect 78 mesh human hair powder, mix the human hair powder with 10% sodium hydroxide in mass fraction according to the mass ratio of 1:20 The solution was stirred and mixed, heated in a water bath at 78°C for 2 hours, then filtered and the filtrate was collected, adjusted to pH 7.0 with 1 mol / L hydrochloric acid, left to settle for 4 hours, then filtered and the filter cake was collected, vacuum freeze-dried, and ground to prepare human hair Keratin powder, for later use; then collect corn stalks, wash them and dry them at 78°C for 7 hours, then grind them and pass through a 95-mesh sieve to collect corn stalk powder, then mix the corn stalks with a mass ratio of 1:20 The powder was stirred and mixed with 10% hydrogen peroxide solution in parts by mass, heated in a water bath at 48°C for 2h, then left to cool to room temperature, washed with deionization for 4 times, and...
example 3
[0023] First, select black human hair, wash it and dry it naturally, crush it with a jet mill and sieve it, collect 80 mesh human hair powder, mix the human hair powder with 10% sodium hydroxide in mass fraction according to the mass ratio of 1:20 The solution was stirred and mixed, heated in a water bath at 80°C for 3 hours, then filtered and the filtrate was collected, adjusted to pH 7.0 with 1 mol / L hydrochloric acid, left to settle for 5 hours, then filtered and the filter cake was collected, vacuum freeze-dried, and ground to prepare human hair Keratin powder, for later use; then collect corn stalks, wash them and dry them at 80°C for 8 hours, then grind them and pass them through a 100-mesh sieve to collect corn stalk powder, then mix the corn stalks with a mass ratio of 1:20 Stir and mix the powder with 10% hydrogen peroxide solution by mass, heat in a water bath at 50°C for 3h, then let it stand and cool to room temperature, wash with deionization for 5 times, and dry a...
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