Structure and sorption properties of hypercrosslinked polystyrenes and magnetic nanocomposite materials based on them
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- 作者：Alexander V. Pastukhov (1)
Vadim A. Davankov (1)
Vladimir V. Volkov (2)
Sergei V. Amarantov (2)
Kseniya I. Lubentsova (1) - 关键词：Hypercrosslinked polystyrene ; Polymer ; inorganic nanocomposites ; Magnetic sorbents ; Transmission electron microscopy ; Iron oxides ; Small ; angle X ; ray scattering
- 刊名：Journal of Polymer Research
- 出版年：2014
- 出版时间：April 2014
- 年：2014
- 卷：21
- 期：4
- 全文大小：3,376 KB
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Vadim A. Davankov (1)
Vladimir V. Volkov (2)
Sergei V. Amarantov (2)
Kseniya I. Lubentsova (1)
1. A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia
2. A. V. Shubnikov Institute of Crystallography, Russian Academy of Sciences, Leninskii pr. 59, Moscow, 119333, Russia - ISSN：1572-8935
文摘
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?±-.6?nm and 6.7?±-.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.