Successive interaction of pairs of soluble organics with nanosilica in aqueous media

Journal of Colloid and Interface Science
V M Gun'koW Janusz

Abstract

Successive interaction of different pairs of water-soluble polymers (poly(ethylene glycol) (PEG), poly(vinyl pyrrolidone) (PVP), poly(vinyl alcohol) (PVA)), proteins (bovine serum albumin (BSA), ovalbumin, gelatin, and ossein), and smaller organics such as lecithin (1-stearoyl-2-oleoyl phosphatidylcholine, SOPC) and Aethonium (1,2-ethylene-bis(N-dimethyl carbodecyl oxymethyl) ammonium dichloride) with nanosilicas A-300 (S(BET)=232 and 297 m(2) g(-1)) and A-50 (S(BET)=52 m(2)g(-1)) was studied using dynamic light scattering, adsorption, and infrared (FTIR) spectroscopy methods. Time-dependent rearrangement of particle size distributions (PSDs) depicts appearance of both smaller and larger aggregates for silica/PEG(I-first adsorbate)/BSA(II-second adsorbate) and silica/PVP(I)/BSA(II) (i.e., BSA adsorbs onto PEG/silica or PVP/silica) than that for silica/organic compound I. However, in the cases of PVA(I)-BSA(II) and PVA(I)-SOPC(II) a similar effect is not observed because only increased aggregation occurs. The successive equilibrium adsorption of similar pairs shows a diminution of the adsorption of the second compound (gelatin, ovalbumin) with increasing amount of the first adsorbed polymer (PEG or PVP).

References

Oct 30, 1998·Journal of Colloid and Interface Science·M Malmsten
May 4, 2001·Journal of Colloid and Interface Science·Frédéric Gruy
Jul 12, 2001·Journal of Colloid and Interface Science·G. OdriozolaR. Hidalgo-Álvarez
Oct 7, 2004·Journal of Colloid and Interface Science·E F VoroninA A Chuiko

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Citations

Feb 29, 2020·Dose-response : a Publication of International Hormesis Society·Meng YangDongliang Shi
Nov 30, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Ziyong ChengJun Lin
Jan 25, 2011·Physical Chemistry Chemical Physics : PCCP·Vladimir M Gun'koSergey V Mikhalovsky
Nov 10, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Yiwei ZhangFei Wang
Aug 14, 2008·Nano Letters·Qiao ZhangYadong Yin

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