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TitleOne-pot low temperature synthesis and characterization of hybrid poly(2-pyrrolidone) microparticles suitable for protein immobilization
Author(s)Dencheva, Nadya Vasileva
Braz, Joana Filipa Barros
Nunes, Teresa G.
Oliveira, Filipa D.
Denchev, Z.
KeywordsPolyamide 4
Anionic ring-opening polymerization
Magnetic microparticles
Protein carriers
Issue date2018
Abstract(s)Neat and hybrid poly(2-pyrrolidone), i.e. polyamide 4 (PA4) microparticles containing magnetic or conductive metal, metal oxide, or carbon nanotube fillers were prepared via environmentally-friendly solventless activated ring-opening polymerization of 2-pyrrolidone at 40 C. The method produces high porosity microparticles with diameters of 5e12mm and conversion to PA4 of 56e65%. Their structure and properties were characterized by light- and electron microscopy, thermal, spectral and X-ray diffraction techniques. Two crystalline polymorphs, namelya andb PА4, were found to coexist at room temperature by X-ray diffraction. The assessment of the adsorption capacity of the PA4 hybrid microparticles toward model protein showed up to 60% efficiency only after 1 h of incubation without any preliminary activation or functionalization.
Publisher version
AccessOpen access
Appears in Collections:IPC - Artigos em revistas científicas internacionais com arbitragem

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