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The diffusion coefficient of the analgesic drug paracetamol (acetaminophen) in macroporous chitosan hydrogels has been measured using a diaphragm cell technique. The pore structure in the hydrogel was varied by changing the amount of chitosan added to the aqueous solution. At 37 °C, the measured values of the diffusion coefficient are between 0.1 and 5×10 −8 m 2 /s depending on the...
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