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Principal features of structural relaxation in glassy polymers. A Review
Author(s) -
Mijović Jovan,
Nicolais Luigi,
D'amore Alberto,
Kenny Jose M.
Publication year - 1994
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760340502
Subject(s) - relaxation (psychology) , principal (computer security) , materials science , parametric statistics , thermodynamics , nonlinear system , polymer , statistical physics , computer science , mathematics , physics , composite material , statistics , psychology , social psychology , quantum mechanics , operating system
The principal features of models of structural relaxation in the glassy state were reviewed. The concepts of fictive temperature as the structural parameter and nonexponentiality and nonlinearity of structural relaxations were described. Various expressions for the structural relaxation time were presented and compared. One particular model was selected and utilized in a parametric optimization study of structural relaxation. Model predictions were checked against experimental results obtained by volumetric and calorimetric measurements.