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Thermogravimetric curves of (a) calcined (SBA-15(C)) and chloropropyl-grafted (SBA-15(C)-Cl) samples, (b) materials after PEI modification and (c) drug-loaded samples. (d) Results of DSC analysis of SBA-15(C)-800, SBA-15(C)-1300 and SBA-15(C)-2000.
