I synthesized microcapsules and then centrifuged at 500rpm with water and later rinsed with absolute ethanol. Then, I vacuum filtered and spread the capsules on a filter paper with spatula, placed them in fume hood for 24 hours. But when I check them next day, they become like a membrane sticking to the bottom of filter paper or glass dish. What i am doing wrong here?
Based on the information provided, it is possible that the microcapsules were not completely dried before being placed in the fume hood. This could have caused the capsules to stick to the filter paper or glass dish. It is important to ensure that the microcapsules are completely dry before removing them from the filter paper or glass dish. Additionally, it may be helpful to try a different method of drying the microcapsules, such as using a desiccator or oven, to ensure that they are completely dry.
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