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Authors
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Simon, F. ; Dragan, E. S. ; Bucatariu, F.
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Title
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Reactive polyelectrolyte multilayers onto silica particles
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Date
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20.06.2008
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Number
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15509
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Abstract
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The two polyelectrolytes poly(vinylformamide-co-vinylamine) [P(VFA-co-VAm)] and poly(acrylic acid) (PAA) have been alternately adsorbed from aqueous solution onto silica particles with sizes in the range 1540 µm, and a mean pore radius of 60 Å. The growth of the alternately adsorbed P(VFA-co-VAm)/PAA film has been evidenced by the zeta-potential-pH profiles as a function of the last layer adsorbed. After the multilayer formation, when P(VFA-co-VAm) was the last layer adsorbed, the hybrid materials were annealed at 120 °C to stabilize the polymer layers by a heat-induced reaction forming amide groups. IR spectra of the hybrid material, before and after thermal treatment, showed the amide linkages formation. The cross-linked hybrid materials were subsequently functionalized with S-benzyl-l-cysteine. X-ray photoelectron spectroscopy (XPS) was employed to obtain information about the amount of the amino acid S-benzyl-l-cysteine which was grafted on the free amino groups on the hybrid particle surfaces.
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Publisher
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Reactive & Functional Polymers
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Wikidata
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Citation
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Reactive & Functional Polymers 68 (2008) 1178-1184
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DOI
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https://doi.org/10.1016/j.reactfunctpolym.2008.04.004
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