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Lignin plasticization to improve binderless fiberboard mechanical properties
Author(s) -
Bouajila J.,
Limare A.,
Joly C.,
Dole P.
Publication year - 2005
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.20342
Subject(s) - materials science , plasticizer , composite material , fiberboard , glass transition , lignin , polymer , chemistry , organic chemistry
Mechanical properties of binderless fiberboard are correlated to the hydrothermal history of the fibers during the board process. Water and temperature thickness gradients allow to calculate a gradient of T‐Tg difference ( Tg , local glass transition temperature, function of local water content; T , local temperature). This gradient explains the variation of mechanical properties within the thickness and in time. The in situ plasticization of lignin, which is supposed to increase the T‐Tg difference, improves the macroscopic mechanical properties of fiberboards. POLYM. ENG. SCI. 45:809–816, 2005. © 2005 Society of Plastics Engineers