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The methods used for flow characterization of a powder mass include the angle of repose (AOR), Carr index (CI), and powder flow tester (PFT). The use of nanosilica as a flow modifier (glidant) is very common in industry. This study aims to compare the glidant effect of hydrophobic and hydrophilic silica on a poorly flowable active pharmaceutical ingredient (ibuprofen) by different flow characterization...
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