Restricted access copper imprinted poly(allylthiourea): The role of hydroxyethyl methacrylate (HEMA) and bovine serum albumin (BSA) on the sorptive performance of imprinted polymer
作者： Fabio AC Suquila , Leandro LG de Oliveira , César RT Tarley , None
DOI: 10.1016/J.CEJ.2018.05.176
关键词: Polymer 、 Thermogravimetric analysis 、 Bovine serum albumin 、 Chemistry 、 Metal ions in aqueous solution 、 Sorption 、 Nuclear chemistry 、 (Hydroxyethyl)methacrylate 、 Point of zero charge 、 Methacrylate
摘要: Abstract In this study, imprinted polymers based on copper poly(allylthiourea) synthesized in acetonitrile (ACN) (Cu2+)-IIP(ACN) or ethanol (EtOH) (Cu2+)-IIP(EtOH) and the effect of 2-hydroxyethyl methacrylate (HEMA) bovine serum albumin (BSA) surface towards simultaneous preconcentration Cu2+ macromolecule exclusion was assessed. Characterization carried out by means Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), thermogravimetric analysis (TGA), textural data [surface area (SBET), total pore volume (VT) average diameter (Dp)], swelling analysis, wettability measurement determination point zero charge (PZC). It noticed that showed higher porosity than one (Cu2+)-IIP(EtOH). From competitive sorption, relative selectivity coefficient (k′) unit obtained comparing with non-imprinted polymer [NIP(ACN)] over a range foreign metal ions same similar ionic radius, thus confirming imprinting created during synthesis. also found hydrophilic co-monomer as well larger molecule BSA coating decreases accentually sorbent. On other hand, sorbent (Cu2+)-IIP-HEMA-BSA(ACN) demonstrated great capability promoting simultaneously sorption solution at pH 4.50, showing potential application perspectives for development matrix interference-free enrichment method complicated matrices, such biological fluids food samples without implementing common sample treatments acid digestion.
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