Journal
CHEMICAL PHYSICS LETTERS
Volume 440, Issue 4-6, Pages 372-377Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2007.04.067
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Glass transition measured by DMTA from the change in slope in storage modulus was 55 degrees C, which was 10.5 degrees C lower than the value measured by tan peak. Initial glass transition measured by DSC, increased exponentially and reached. a constant value of 55 degrees C at or higher heating rate of 30 degrees C/min. Transition temperature, measured by MDSC, remained constant up to heating rate 15 degrees C/min and then decreased. The glass transition values determined from reversible heat flow was 60 degrees C. The break in diffusivity and density (i.e. volume) was observed at 50 degrees C below the glass transition temperature measured by thermal and mechanical methods. (c) 2007 Elsevier B.V. All rights reserved.
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