Probing the subglass relaxation behavior in model heterocyclic polymer networks by dielectric spectroscopy.

作者: V Yu Kramarenko , TA Ezquerra , VP Privalko , None

DOI: 10.1103/PHYSREVE.64.051802

关键词: Dielectric strengthPolymerRelaxation (physics)ThermodynamicsArrhenius equationExponentDielectric spectroscopyRing (chemistry)Conjugated systemNuclear magnetic resonanceMaterials science

摘要: The subglass relaxation (beta) in model heterocyclic polymer networks (HPNs) with a controlled ratio of trimerized mono- and diisocyanates was characterized by dielectric spectroscopy the frequency domain. beta investigated HPNs follows Arrhenius law unusually low values preexponential factor (10(-17)

参考文章(33)
Martin Goldstein, Viscous Liquids and the Glass Transition: A Potential Energy Barrier Picture The Journal of Chemical Physics. ,vol. 51, pp. 3728- 3739 ,(1969) , 10.1063/1.1672587
Gyan P. Johari, Martin Goldstein, Viscous Liquids and the Glass Transition. II. Secondary Relaxations in Glasses of Rigid Molecules Journal of Chemical Physics. ,vol. 53, pp. 2372- 2388 ,(1970) , 10.1063/1.1674335
Gyan P. Johari, Intrinsic mobility of molecular glasses The Journal of Chemical Physics. ,vol. 58, pp. 1766- 1770 ,(1973) , 10.1063/1.1679421
A. Arbe, D. Richter, J. Colmenero, B. Farago, Merging of the alpha and beta relaxations in polybutadiene: A neutron spin echo and dielectric study. Physical Review E. ,vol. 54, pp. 3853- 3869 ,(1996) , 10.1103/PHYSREVE.54.3853
Frank H. Stillinger, Relaxation and flow mechanisms in ``fragile'' glass-forming liquids Journal of Chemical Physics. ,vol. 89, pp. 6461- 6469 ,(1988) , 10.1063/1.455365
Y. N. Huang, Y. N. Wang, E. Riande, A dynamically heterogeneous coupled dissipation scenario of glass transition Journal of Chemical Physics. ,vol. 111, pp. 8503- 8509 ,(1999) , 10.1063/1.480191
F. Garwe, A. Schönhals, H. Lockwenz, M. Beiner, K. Schröter, E. Donth, Influence of cooperative α dynamics on local β relaxation during the development of the dynamic glass transition in poly(n-alkyl methacrylate)s Macromolecules. ,vol. 29, pp. 247- 253 ,(1996) , 10.1021/MA9506142
C. A. Angell, Formation of glasses from liquids and biopolymers. Science. ,vol. 267, pp. 1924- 1935 ,(1995) , 10.1126/SCIENCE.267.5206.1924