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Relations between Glass Transition Temperatures in Miscible Polymer Blends and Composition: From Volume to Mass Fractions
Author(s) -
Pimbert Sylvie,
AvigPoquillon Laurence,
Levesque Guy
Publication year - 2005
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200550434
Subject(s) - glass transition , polymer , mixing (physics) , materials science , thermodynamics , volume (thermodynamics) , mass fraction , polymer blend , volume fraction , polymer chemistry , composite material , copolymer , physics , quantum mechanics
The use of volume fractions in the empirical mixing laws to predict the glass transition temperatures (Tg) of polymer blends provides good agreement with experimental values, even for polymer systems with different densities. No adjustment parameter is therefore required whereas Gordon‐Taylor and Kwei equations based on weight fractions need the use of a fitting parameter which has to be determined from experimental data. This assumption was validated from Tg measurements through DSC experiments conducted on PMMA /PVDF blends which have significantly different densities.