%0 Conference Proceedings %T Free-volume structure of glass-As2Se3/PVP nanocomposites prepared by mechanochemical milling %+ Jan Dlugosz University in Czestochowa %+ Opole University of Technology %+ Ivan Franko National University of Lviv %+ Institut des Sciences Chimiques de Rennes (ISCR) %A Shpotyuk, O. %A Ingram, A. %A Bujňáková, Z. %A Baláž, P. %A Shpotyuk, Y. %A Boussard-Plédel, C. %A Bureau, B. %< avec comité de lecture %( 9th International Conference on Times of Polymers and Composites From Aerospace to Nanotechnology %B 9th International Conference on Times of Polymers and Composites From Aerospace to Nanotechnology %C Ischia, Italy %Y Acierno D.Grassia L.D'Amore A. (eds) %I American Institute of Physics Inc. %V 1981 %P 020150 %8 2018-06-17 %D 2018 %R 10.1063/1.5046012 %K arsenic selenide %K free-volume defect %K mechanical milling %K nanocomposite %K nanoparticle %K positron annihilation %Z Chemical Sciences %Z Chemical Sciences/Material chemistryConference papers %X Atomic-deficient void structure is studied in nanocomposites prepared by mechanochemical milling of glassy g-As2Se3 in a water solution of polyvinylpyrrolidone (PVP) employing positron annihilation lifetime spectroscopy. Formalism of Ps-to-positron trapping conversion known as x3-x2-CDA (coupling decomposition algorithm) is applied to identify free-volume defects in the pelletized g-As2Se3/PVP nanocomposite in respect to dry-milled g-As2Se3 one. Under wet-milling, the inter-nanoparticle Ps-decaying sites in preferential PVP environment replace free-volume positron traps (in dry-milled g-As2Se3) with defect-specific lifetime of 0.352 ns, corresponding to di-/tri-atomic vacancies in g-As-Se. © 2018 Author(s). %G English %2 https://univ-rennes.hal.science/hal-01874719/document %2 https://univ-rennes.hal.science/hal-01874719/file/Shpotyuk%20et%20al_2018_Free-volume%20structure%20of%20glass-As2Se3-PVP%20nanocomposites%20prepared%20by.pdf %L hal-01874719 %U https://univ-rennes.hal.science/hal-01874719 %~ UNIV-RENNES1 %~ CNRS %~ INSA-RENNES %~ ENSC-RENNES %~ ISCR %~ SCR_VC %~ STATS-UR1 %~ UR1-SPM %~ INC-CNRS %~ UR1-UFR-SPM %~ UR1-HAL %~ UR1-SDLM %~ IVER %~ TEST-UR-CSS %~ UNIV-RENNES %~ INSA-GROUPE %~ TEST-HALCNRS %~ UR1-MMS %~ TEST2-HALCNRS