Glass-Transition Temperature Gradient in Nanocomposites: Evidence from Nuclear Magnetic Resonance and Differential Scanning Calorimetry | Zendy

Aurélie Papon | Zendy; Hélène Montes | Zendy; Mohamed Hanafi | Zendy; François Lequeux | Zendy; Laurent Guy | Zendy; Kay Saalwächter | Zendy

Open Access

Glass-Transition Temperature Gradient in Nanocomposites: Evidence from Nuclear Magnetic Resonance and Differential Scanning Calorimetry

Author(s) -

Aurélie Papon,

Hélène Montes,

Mohamed Hanafi,

François Lequeux,

Laurent Guy,

Kay Saalwächter

Publication year - 2012

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.108.065702

Subject(s) - glass transition , differential scanning calorimetry , materials science , nanocomposite , relaxation (psychology) , polymer , temperature gradient , atmospheric temperature range , condensed matter physics , dynamics (music) , transition temperature , chemical physics , nuclear magnetic resonance , thermodynamics , nanotechnology , composite material , physics , psychology , social psychology , quantum mechanics , superconductivity , acoustics

International audienceThe slowing-down of the dynamics of a polymer chain near a surface has been observed for many years now. Here we show that the behavior of model nanocomposites can be quantitatively described with a gradient of glass-transition temperature. We describe with a single parameter—the range of this gradient—the temperature and solvent effect on the spin relaxation dynamics. Moreover, this parameter allows a quantitative description of the nanocomposite calorimetric response from the one of the bulk polymer

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