Structure and sorption properties of hypercrosslinked polystyrenes and magnetic nanocomposite materials based on them
- 251 Downloads
By using transition electron microscopy, X-ray diffraction and small-angle X-ray scattering technique porous structure of a series of polystyrene-type sorbents (microporous and biporous hypercrosslinked polystyrenes, mesoporous sorbent XAD-4) was investigated, as well as sizes of iron oxide nanoparticles introduced into their matrix. Nanocomposite sorbents have low density, a large inner surface area, and like the parent polymers, exhibit marked adsorption properties, e.g. take up from saturated vapors 1.4 g/g of iodine or 0.8 g/g chloropicrin. A general method for processing scattering data from polydisperse multicomponent systems, like the above nanocomposites, was suggested. A rather homogeneous distribution of scattering heterogeneities with radius around 3 nm was found to be characteristic of microporous hypercrosslinked polystyrenes. Radius of magnetic iron oxide (magnetite) nanoparticles varies in ranges of 2.1 ± 0.6 nm and 6.7 ± 3.8 nm for the above microporous and biporous hypercrosslinked polymers, while in the XAD-4 particles of all sizes from 1 to 10 nm are presented.
KeywordsHypercrosslinked polystyrene Polymer-inorganic nanocomposites Magnetic sorbents Transmission electron microscopy Iron oxides Small-angle X-ray scattering
This work was carried out with the support of Russian Foundation for Basic Research (RFBR) - International cooperation of the Russian-Belarusian research projects 2012–2013, grant № 12-03-90007-Bel_a.
- 1.Pomogailo AD, Rosenberg AS, Uflyand IE (2000) Metal nanoparticles in polymers. Chemistry, MoscowGoogle Scholar
- 5.Kuznetsov AA, Filippov VI, Kutushov MV, Komissarova LK, Feldman MG, Kutukova EA, Lenskaya GA (1994) A method of blood purification in an extracorporeal system. Russ Patent 2008929 Pub. Date 15.03.1994Google Scholar
- 6.Kutushov MV, Kuznetsov AA, Filippov VI (1997) New method of biological fluids detoxification based on magnetic adsorbents. In: Häfeli U, Schütt W, Teller J, Zborowski M (eds) Scientific and clinical applications of magnetic carriers (Proceedings of an international conference on scientific and clinical applications of magnetic carriers, held September 5–7, 1996, in Rostock, Germany). Plenum, New YorkGoogle Scholar
- 7.Kutushov MV (2007) Magnetically operated absorbent and method for the production thereof. US Patent Application Publication 2007/071977 A1 Pub. Date 29.03.2007Google Scholar
- 9.Solntseva DP, Kalinina RN, Krasnov MS, Makarova EI (1998) Method of obtaining of modified sorbent. Russ Patent 2105015 Pub. Date 20.02.1998Google Scholar
- 20.Hypersol-MacronetTM Sorbent Resins (1995) Purolite technical bulletin. The Purolite Company, UKGoogle Scholar
- 21.Anisimova NY, Dolzhikova YI, Davankov VA, Pastukhov AV, Miljaeva SI, Senatov FS, Kiselevsky MV (2012) Hemocompatibility of nanostructured sorbents based on hypercrosslinked polymers of the styrosorb series. Russ J Biother 11(1):23–27Google Scholar
- 22.Anisimova NY, Dolzhikova YI, Davankov VA, Pastukhov AV, Miljaeva SI, Senatov FS, Kiselevsky MV (2012) Prospects for the application of biporous sorbents based on hypercrosslinked styrene polymers for the prevention and treatment of systemic purulent-septic complications. Nanotechnologies in Russia 7(5–6):318–326CrossRefGoogle Scholar