A mesoporous silica and cellulose blend membrane protected by carbonate, its preparation method and application
A technology of mesoporous silica and carbonate, applied in chemical instruments and methods, bandages, water/sludge/sewage treatment, etc., can solve the problem of losing the ability to act as a drug carrier and destroying surfaces and channels with high specific surface area Structure and other problems, to achieve the effect of accelerating the growth of epithelial cells, good repeatability, and improving the scope of application
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Embodiment 1
[0027] A method for preparing a mesoporous silica and cellulose blend membrane protected by carbonate, the specific steps are as follows:
[0028] 1) Configure CaCl with a mass fraction of 10% respectively 2 and 10% Na 2 CO 3 solution;
[0029] 2) Disperse the SBA-15 particles in the CaCl prepared in step 1) 2 solution, soaked for 48h, and then mixed with the Na prepared in step 1) 2 CO 3 Solution mixing, mechanical stirring for 2 hours, SBA-15 particles and CaCl 2 The mass ratio is 1:2;
[0030] 3) The turbid liquid obtained in step 2) was repeatedly centrifuged and washed to remove the salt, and finally placed in an oven to dry to generate blocky calcium carbonate-wrapped SBA-15 particles, which were ground into fine powder;
[0031] 4) Prepare cellulose solvent, pre-cool to -12°C, then add a certain amount of cellulose, stir to dissolve, defoam and remove impurities, and finally obtain a cellulose solution with a mass fraction of 4%;
[0032] 5) Add the calcium carb...
Embodiment 2
[0037] A method for preparing a mesoporous silica and cellulose blend membrane protected by carbonate, the specific steps are as follows:
[0038] 1) Configure CaCl with a mass fraction of 10% respectively 2 and 10% Na 2 CO 3 solution;
[0039] 2) Disperse the SBA-15 particles in the CaCl prepared in step 1) 2 solution, soaked for 72h, and then mixed with the Na prepared in step 1) 2 CO 3 The solution was mixed and mechanically stirred for 3 hours, and the SBA-15 particles and CaCl 2 The mass ratio is 1:5;
[0040] 3) The turbid liquid obtained in step 2) was repeatedly centrifuged and washed to remove the salt, and finally placed in an oven to dry to generate blocky calcium carbonate-wrapped SBA-15 particles, which were ground into fine powder;
[0041] 4) Prepare cellulose solvent, pre-cool to -12°C, then add a certain amount of cellulose, stir to dissolve, defoam and remove impurities, and finally obtain a cellulose solution with a mass fraction of 3.5%;
[0042] 5...
Embodiment 3
[0047] A method for preparing a mesoporous silica and cellulose blend membrane protected by carbonate, the specific steps are as follows:
[0048] 1) Configure CaCl with a mass fraction of 10% respectively 2 and 10% Na 2 CO 3 solution;
[0049] 2) Disperse the MCM-41 particles in the CaCl prepared in step 1) 2 solution, soaked for 96h, and then mixed with the Na prepared in step 1) 2 CO 3 The solution was mixed and mechanically stirred for 3 hours, MCM-41 particles and CaCl 2 The mass ratio is 1:5;
[0050] 3) The turbid liquid obtained in step 2) was repeatedly centrifuged and washed to remove the salt, and finally placed in an oven to dry to generate massive calcium carbonate-wrapped MCM-41 particles, which were ground into fine powder;
[0051] 4) Prepare cellulose solvent, pre-cool to -12°C, then add a certain amount of cellulose, stir to dissolve, defoam and remove impurities, and finally obtain a cellulose solution with a mass fraction of 3%;
[0052] 5) Add the ...
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