Development and characterization of a thermoresponsive polysulfone membrane using an environmental friendly technology
作者： Márcio Temtem , Daniel Pompeu , Telma Barroso , João Fernandes , Pedro C. Simões
DOI: 10.1039/B821495F
关键词: Coating 、 Polymer 、 Polysulfone 、 Adsorption 、 Langmuir 、 Membrane 、 Polymer chemistry 、 Chemical engineering 、 Materials science 、 Contact angle 、 X-ray photoelectron spectroscopy
摘要: A new and environmentally friendly technology has been used successfully to produce thermoresponsive polysulfone membranes with good performance in terms of valve mechanism the pores, a complete on-off control water permeability. Membranes were prepared using CO2-assisted phase inversion method their pores coated/impregnated polymer – poly(N-isopropylacrylamide) methodology for preparation these type structures. The coating/impregnation efficiency was assessed by SEM XPS analysis that confirmed presence nitrogen due hydrogel. Contact angle measurements phosphate buffer solution permeability determined order characterize structure hydrophobicity variations temperature. tested model protein (BSA) as proof concept ability pore apertures temperature stimulus. diffusion based on Fick's law Langmuir adsorption developed.
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