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Updated: Jun 17, 2026

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Published on: September 19, 2020
Porosity evolution of VP-DVB/MCM-41 nanocomposite
Radoslaw Zaleski1, Wojciech Stefaniak, Malgorzata Maciejewska
1M. Curie-Sklodowska University, Institute of Physics, Department of Nuclear Methods, M. Curie-Sklodowska sq. 1, 20-031 Lublin, Poland.
Abstract:
The porous structure of nanostructured vinylpyrrolidone-divinylbenzene (VP-DVB)/MCM-41 composite was characterized using N(2) adsorption at 77K and positronium annihilation lifetime spectroscopy (PALS), atomic force microscopy (AFM) and Raman spectroscopy. Positron annihilation lifetime spectra were measured during outgassing procedure. The voids of differentiated dimensions were detected in the composite material. The number of free volumes and their dimensions depend on the degree of evacuation of volatile components from the samples.
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