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Studies of relaxation phenomena in polymers. II. The behavior of simple polymers in their main transition region
Author(s) -
Jansson JanFredrik
Publication year - 1973
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1973.070171005
Subject(s) - viscoelasticity , polymer , relaxation (psychology) , maxima , function (biology) , simple (philosophy) , line (geometry) , thermodynamics , materials science , physics , mathematics , statistical physics , chemistry , nuclear magnetic resonance , geometry , philosophy , psychology , social psychology , art , epistemology , evolutionary biology , performance art , biology , art history
In an earlier paper, a “new” viscoelastic function, log J 2 = g {log J 1 }, was defined. For polymers, the linear viscoelastic behavior of which is characterized by “simple segment movements” in their main transition regions, the following general properties are found: (1) The local maxima of the function for different polymers fall along a straight line width the slope approximately equal to 1.1. (2) A characteristical general shape is noticed for the function after shifting along the straight line and reducing the J 1 compliance as regards the “frozen in” compliance J 10 . (3) J 1 reflects the storage and J 2 , the loss mechanisms of the system. The relation J 2 / J 1 is an expression for the average retardation time.