M. Curie-Sklodowska University, Institute of Physics, Department of Nuclear Methods, M. Curie-Sklodowska sq. 1, 20-031 Lublin, Poland.
J Colloid Interface Sci. 2010 Mar 1;343(1):134-40. doi: 10.1016/j.jcis.2009.11.019. Epub 2009 Nov 11.
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.
采用 N2 在 77K 下吸附、正电子湮没寿命谱（PALS）、原子力显微镜（AFM）和拉曼光谱对纳米结构的乙烯基吡咯烷酮-二乙烯基苯（VP-DVB）/MCM-41 复合材料的多孔结构进行了表征。在脱气过程中测量了正电子湮没寿命谱。在复合材料中检测到了具有不同尺寸的空隙。自由体积的数量及其尺寸取决于从样品中挥发成分的抽真空程度。
