Selective Separation and Preconcentration of Caffeine from Natural and Pharmaceutical Products using New Polyurethane Foams

• Main Authors: Samah Ali (Author), Sami M. Abdel Azeem (Author), Arshi Naqvi (Author), Mohamed F. El-Shahat (Author), Amr Mohamed (Author)
• Format: Bog
• Udgivet: Universidade de São Paulo, 2022-11-01T00:00:00Z.
• Fag: article
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Abstract Two polyurethane foam-based sorbents (PUF) were synthesized by imprinting and grafting techniques and examined for selective separation and preconcentration of caffeine (CAF) in some pharmaceutical products and in black tea. Molecularly imprinted PUF was synthesized based on hydrogen-bondin...