کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5211239 | 1382941 | 2008 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Reactive polyelectrolyte multilayers onto silica particles
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
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 15-40 μm, and a mean pore radius of 60 Ã
. 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Reactive and Functional Polymers - Volume 68, Issue 7, July 2008, Pages 1178-1184
Journal: Reactive and Functional Polymers - Volume 68, Issue 7, July 2008, Pages 1178-1184
نویسندگان
Frank Simon, Ecaterina Stela Dragan, Florin Bucatariu,