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The dynamic mechanical behavior of paper during drying
Author(s) -
Htun Myat,
De Ruvo Alf,
Fellers Christer
Publication year - 1985
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.1985.070300425
Subject(s) - viscoelasticity , materials science , composite material , amorphous solid , modulus , dynamic mechanical analysis , dynamic modulus , elastic modulus , polymer , stress (linguistics) , chemistry , crystallography , linguistics , philosophy
The dynamic mechanical properties of paper during restrained drying are reported in this article. The apparatus used was a servohydraulic material testing system (MTS), connected to a computer unit. It has been found that the ratio of drying stress to elastic modulus at a given dry solids content corresponds to the instantaneous linear contraction of the sheet when the drying stress is relieved. It is therefore deduced that paper behaves as a linear viscoelastic body during restrained drying. The finding of a maximum loss coefficient and the drastic change in elastic modulus during drying of paper are interpreted in terms of a transitional change in the amorphous regions of wood polymers plasticized by water.