title: Relaxation processes in hybrid organic-inorganic polymer nanosystems polymerized in situ.
abstract: The relaxation processes of hybrid organic-inorganic polymer nanosystems (OIS) synthesized by joint polymerization of organic and inorganic components were studied using methods of differential scanning calorimetry (DSC), dynamic mechanical thermal analysis (DMTA), and broadband dielectric relaxation spectroscopy (DRS). The organic component was a mixture of two products: high-molecular-weight macrodiisocyanate (MDI) with low reactivity and low-molecular-weight isocyanate-containing modifier poly(isocyanate) (PIC) with high reactivity. Sodium silicate (SS) was used as inorganic component. The structures of the OIS obtained were in the form of hybrids with covalently connected building blocks and interpenetrating networks: weakly cross-linked network MDI/SS and highly cross-linked network PIC/SS. Depending on the MDI/PIC ratio, one of the networks was prevailing and created a continuous structure with domains of second network.
  61.25.hk; 82.35.Lr; 64.70.pj.
authors.affiliation: Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine ; Center for Thermophysical Investigations and Analysis of the NAS of Ukraine, Kyiv 02160, Ukraine ; Université de Lyon, Université Lyon 1, Ingénierie des Matériaux Polymères, UMR CNRS 5223, IMP@LYON1, Lyon 69622, France.
authors.forename: Maksym
authors.initials: M
authors.lastname: Iurzhenko
authors.affiliation: Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine ; Center for Thermophysical Investigations and Analysis of the NAS of Ukraine, Kyiv 02160, Ukraine.
authors.forename: Yevgen
authors.initials: Y
authors.lastname: Mamunya
authors.affiliation: Université de Lyon, Université Lyon 1, Ingénierie des Matériaux Polymères, UMR CNRS 5223, IMP@LYON1, Lyon 69622, France.
authors.forename: Gisele
authors.initials: G
authors.lastname: Boiteux
authors.affiliation: Université de Lyon, Université Lyon 1, Ingénierie des Matériaux Polymères, UMR CNRS 5223, IMP@LYON1, Lyon 69622, France.
authors.forename: Gerard
authors.initials: G
authors.lastname: Seytre
authors.affiliation: Université de Lyon, Université Lyon 1, Ingénierie des Matériaux Polymères, UMR CNRS 5223, IMP@LYON1, Lyon 69622, France.
authors.forename: Erisela
authors.initials: E
authors.lastname: Nikaj
authors.affiliation: Université de Lyon, Université Lyon 1, Ingénierie des Matériaux Polymères, UMR CNRS 5223, IMP@LYON1, Lyon 69622, France.
authors.forename: Olivier
authors.initials: O
authors.lastname: Gain
authors.affiliation: Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine.
authors.forename: Eugene
authors.initials: E
authors.lastname: Lebedev
authors.affiliation: Institute of Macromolecular Chemistry of the National Academy of Sciences of Ukraine, Kyiv 02160, Ukraine.
authors.forename: Svetlana
authors.initials: S
authors.lastname: Ishchenko
keywords: Hybrid polymers; Interpenetrating networks; Joint polymerization; Organic-inorganic nanosystems; Relaxation phenomena