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Challenges in Glassy Dynamics of Polymers
Author(s) -
Serghei Anatoli
Publication year - 2008
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200800197
Subject(s) - polymer , relaxation (psychology) , glass transition , materials science , metastability , dynamics (music) , molecular dynamics , chemical physics , thin film , polymer chemistry , work (physics) , polymer science , nanotechnology , chemical engineering , composite material , chemistry , thermodynamics , computational chemistry , physics , organic chemistry , psychology , social psychology , acoustics , engineering
This work is focused on the glassy dynamics of polymers under conditions of one‐dimensional confinement (in thin films). Several important topics are addressed: (a) preparative factors with large impact on the molecular dynamics of thin polymer films (oxidative degradation, plasticizing effects, residual stresses leading to metastable states); (b) it is emphasized the necessity to characterize the glass transition by measuring relaxation time distribution functions; (c) it is shown that different experimental techniques do not necessarily deliver converging results when applied to characterise the dynamics of confined polymers; (d) a novel approach is demonstrated which grants a direct experimental access to interfacial polymer dynamics; (e) measurements on nearly isolated polymer chains are presented.